Publications

2024

IEEE Signal Processing Magazine – Special Issue on Signal Processing for the Integrated Sensing and Communications Revolution – Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, Junil Choi, David González G., Marios Kountouris, Yong Liang Guan, and Osvaldo Gonsa: “From OTFS to AFDM: A Comparative Study of Next-Generation Waveforms for ISAC in Doubly-Dispersive Channels,” IEEE Signal Processing Magazine, 2024.
IEEE Transactions on Wireless Communications – Takumi Takahashi, Hiroki Iimori, Shinsuke Ibi, and Giuseppe Thadeu Freitas de Abreu: “Bayesian Bilinear Inference for Joint Channel Tracking and Data Estimation in Millimeter-Wave MIMO Systems,” IEEE Transactions on Wireless Communications, 2024.
IEEE Transactions on Wireless Communications – Sota Uchimura, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Blockage-Robust Hybrid Beamforming Enabling High Sum Rate for Millimeter-Wave OFDM Systems,” IEEE Trans. Wireless Commun., 2024.
IEEE Transactions on Wireless Communications – Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, David González G., and Osvaldo Gonsa: “Integrated Sensing and Communications for 3D Object Imaging via Bilinear Inference,” IEEE Trans. Wireless Commun., 2024.
VTC Fall – Washington, USA – Kein Yukiyoshi, Taku Mikuriya, Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu and Naoki Ishikawa: “Grover Adaptive Search for Maximum Likelihood Detection of Generalized Spatial Modulation,” in Proc. IEEE Vehicular Communications Conference -Fall (VTC Fall), Oct. 10-13, 2024.
IEEE Asilomar CSSC – Pacific Grove, USA – Niclas Führling, Kengo Ando, Giuseppe Thadeu Freitas de Abreu, David González González and Osvaldo Gonsa: “Discrete Aware Matrix Completion via Convexized `0-Norm Approximation,” Proc. Asilomar Asilomar Conference on Signals, Systems and Computers, Nov. 2024.
IEEE Asilomar CSSC – Pacific Grove, USA – Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, Kein Yukiyoshi, Taku Mikuriya, and Naoki Ishikawa: “AFDM Chirp-Permutation-Index Modulation with Quantum-Accelerated Codebook Design,” Proc. Asilomar Asilomar Conference on Signals, Systems and Computers, Nov. 2024.
IEEE ICASSP – Seoul, Korea – Kuranage Roche Rayan Ranasinghe, Hyeon Seok Rou and Giuseppe Thadeu Freitas de Abreu: “Fast and Efficient Sequential Radar Parameter Estimation in MIMO-OTFS Systems,” Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, (ICASSP 2024), April 14-19, 2024.
IEICE RCS – Japan – Sota Uchimura, Kengo Ando, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Joint Design of Linear Equalization and Beamforming for Single-Carrier Sub-Terahertz Systems,” in IEICE Tech. Report, vol. 124, no. 107, RCS2024-99, pp. 76-81, July 2024.

2023

IEEE J-ISPIN – Niclas Führling, Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, David González G. and Osvaldo Gonsa: “Robust RSSI-based Multi-target Localization via Gaussian Process Regression”, IEEE Journal of Indoor and Seamless Positioning, (J-ISPIN 2023), 2023.
IEEE Access – Ivan Alexander Morales Sandoval, Kengo Ando, Omid Taghizadeh and Giuseppe Thadeu Freitas de Abreu: “Sumrate Maximization and Leakage Minimization for Multi-user Cell-Free Massive MIMO Systems,” IEEE Access, 2023.
IEEE Access – Niclas Führling, Kengo Ando, Hyeon Seok Rou and Giuseppe Thadeu Freitas de Abreu: “A Rate Splitting Multiple Access Interface for Clustered Wireless Federated Learning,” IEEE Access, vol. 11, pp. 82652-82664, Aug. 2023.
IEEE Transactions on Wireless Communications – Takumi Takahashi, Hiroki Iimori, Koji Ishibashi, Shinsuke Ibi, and Giuseppe Thadeu Freitas de Abreu: “Bayesian Receiver Design via Bilinear Inference for Cell-Free Massive MIMO with Low-Resolution ADCs,” IEEE Transactions on Wireless Communications, vol. 22, no. 7, pp. 4756-4772, Jul. 2023.
IEEE Transactions on Vehicular Technology – Sota Uchimura, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Outage-Minimization Coordinated Multi-Point for Millimeter-Wave OFDM with Random Blockages,” IEEE Trans. Veh. Tech., vol. 72, no. 7, pp. 8783-8796, Jul. 2023.
IEEE Tran. on Info. Forensics and Security (IEEE SPS Japan Journal Paper Award) – Yuma Katsuki, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi, and Naoki Ishikawa: “Noncoherent Massive MIMO with Embedded One-Way Function Physical Layer Security,” IEEE Transactions on Information Forensics and Security, vol. 18, pp. 3158-3170, May 2023.
IEEE Wireless Communications Letters – Yuma Katsuki, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi and Naoki Ishikawa: “A New Noncoherent Gaussian Signaling Scheme for Low Probability of Detection Communications,” IEEE Wireless Communication Letters, vol. 12, no. 3, pp. 545-549, Mar. 2023.
IEEE Open Journal of the Signal Processing Society – Kengo Ando, Koji Ishibashi and Giuseppe Thadeu Freitas de Abreu: “Robust Tensor Decomposition for Heterogeneous Beamforming under Imperfect Channel State Information,” IEEE Open Journal of the Signal Processing Society, vol. 4, pp. 89-98, Feb. 2023.
IEEE CAMSAP – Los Sueños, Costa Rica – Aya El Mai, Hyeon Seok Rou and Giuseppe Thadeu Freitas de Abreu: “Efficient Joint Radar and Communication Exploiting Sparsity and Spatial Modulation”, Proc. IEEE Conference on Computational Advances in Multi-sensor Adaptive Processing, (CAMSAP 2023), Dec. 10 – 13, 2023.
IEEE CAMSAP – Los Sueños, Costa Rica – Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, David González G. and Osvaldo Gonsa: “Enabling EnergyEfficiency in Massive-MIMO: A Scalable Low-Complexity Decoder for Generalized Quadrature Spatial Modulation”, Proc. IEEE Conference on Computational Advances in Multi-sensor Adaptive Processing, (CAMSAP 2023), Dec. 10 – 13, 2023.
IEEE CAMSAP – Los Sueños, Costa Rica – Niclas Führling, Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, David González G. and Osvaldo Gonsa: “Robust Training for RSSI-Based Localization”, Proc. IEEE Conference on Computational Advances in Multi-sensor Adaptive Processing, (CAMSAP 2023), Dec. 10 – 13, 2023.
IEEE CAMSAP – Los Sueños, Costa Rica – Kengo Ando and Giuseppe Thadeu Freitas de Abreu: “Low-Complexity and High-Performance Combiners for Over the Air Computing”, Proc. IEEE Conference on Computational Advances in Multi-sensor Adaptive Processing, (CAMSAP 2023), Dec. 10 – 13, 2023.
WPMC – Tampa, USA (Best Paper Award) – Kenta Miwa, Kengo Ando, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Physical-Layer Authentication Over Spatially Correlated MIMO Channels,” in Proc. Wireless Personal Multimedia Communications (WPMC 2023), November 19-22, 2023.
IEEE WCNC – Glasgow, Scotland – Sota Uchimura, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Hybrid Beamforming for OutageMinimization in Frequency Selective Millimeter-Wave Channels,” in Proc. IEEE Wireless Communications and Networking Conference (WCNC 2023), 2023.
VTC Fall – Hong Kong – Koushi Okui, Kengo Ando, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Scalable Network-Assisted Full-Duplex Cell-Free Massive MIMO With Limited Fronthaul Capacity,” in Proc. IEEE Vehicular Communications Conference -Fall (VTC Fall 2023), Oct. 10-13, 2023.
IEEE ICASSP – Rhodes Island, Greece – Yuya Nishi, Takumi Takahashi, Hiroki Iimori and Giuseppe Thadeu Freitas de Abreu, Shinsuke Ibi and Seiichi Sampei: “Wireless Location Tracking via Complex-Domain Super MDS with Time Series Self-Localization Information,” Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, (ICASSP 2023), June 4-9, 2023.
IEICE RCS – Japan – Kenta Miwa, Kengo Ando, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Physical Layer Authentication Based on Mahalanobis Distance Over Spacially Correlated MIMO Channels,” in Proc. IEICE General Conference, vol. 123, no. 76, RCS2023-34, pp. 37-42, June, 2023.
IEEE ICOIN – Bangkok, Thailand – Shuto Fukue, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Network-Assisted Full-Duplex MillimeterWave Cell-Free Massive MIMO with Localization-Aided Inter-User Channel Estimation”, Proc. IEEE International Conference on Information Networking, (ICOIN 2023), Jan. 11 – 14, 2023.

2022

University of Electro-Communications Bremen – 2022 Sota Uchimura, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Base Station Diversity and Beamforming,” Reference Number: 2022-112198, July 2022.
IEEE Transactions on Wireless Communications – Hyeon Seok Rou, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, David González G., and Osvaldo Gonsa: “Scalable Quadrature Spatial Modulation,” IEEE Trans. Wireless Commun., vol. 21, no. 11. Nov. 2022.
IEEE Open Journal of the Communications Society – Kengo Ando, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, and Koji Ishibashi: “User-Heterogeneous CellFree Massive MIMO Beamforming via Tensor Decomposition,” IEEE Open Journal of the Communications Society, vol. 3, pp. 740-758, Apr. 2022.
IEEE Transactions on Wireless Communications – Omid Taghizadeh, Tianyu Yang, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Ali Cagatay Cirik, and Rudolf Mathar: “Quantization-Aided Secrecy: FD C-RAN Communications with Untrusted Radios,” IEEE Trans. Wireless Commun., vol. 21, no. 10, pp. 8522-8535, Oct. 2022.
IEEE Access – Shuto Fukue, Hiroki Iimori, Koji Ishibashi, and Giuseppe Thadeu Freitas de Abreu: “Joint Access Configuration and Beamforming for Cell-Free Massive MIMO Systems with Dynamic TDD,” IEEE Access, vol. 10, pp. 40130-40149, Apr. 2022.
IEEE Transactions on Wireless Communications – Hiroki Iimori, Takumi Takahashi, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu, David González G., and Osvaldo Gonsa: “Joint Activity and Channel Estimation for Extra-Large MIMO Systems Subject to Non-Stationarities,” IEEE Transactions on Wireless Communications, vol. 12, no. 9, pp. 7253-7270, Sep. 2022.
IEEE SITA – Hokkaido, Japan – Sota Uchimura, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Design of Outage-Minimization Hybrid Beamforming for Coordinated Multi-Point OFDM Millimeter Wave Systems,” The 45th Symposium on Information Theory and its Applications (SITA 2019), Nov. 29 – Dec. 02, 2022.
IEEE Asilomar CSSC – Pacific Grove, USA – Kengo Ando, Hiroki Iimori, Hyeon Seok Rou Giuseppe Thadeu Freitas de Abreu, David González González and Osvaldo Gonsa: “An Iterative Discrete Least Square Estimator with Dynamic Parameterization via Deep-Unfolding,” Proc. Asilomar Asilomar Conference on Signals, Systems and Computers, Nov. 2022.
IEEE Asilomar CSSC – Pacific Grove, USA – Omid Taghizadeh, Tianyu Yang and Giuseppe Thadeu Freitas de Abreu: “Securing FD C-RAN with Untrusted Radios: Joint Utilization of Jamming and Fronthaul Quantization,” Proc. Asilomar Asilomar Conference on Signals, Systems and Computers, Nov. 2022.
IEEE Asilomar CSSC – Pacific Grove, USA – Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, David González González and Osvaldo Gonsa: “Asymmetric Bilinear Inference for Joint Communications and Environment Sensing,” Proc. Asilomar Asilomar Conference on Signals, Systems and Computers, Nov. 2022.
IEEE Asilomar CSSC – Pacific Grove, USA – Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu and Takumi Takahashi: “An Efficient Vector-valued Belief Propagation Decoder for Quadrature Spatial Modulation,” Proc. Asilomar Asilomar Conference on Signals, Systems and Computers, Nov. 2022.
IEEE CTW – Marbella, Spain – Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu and Takumi Takahashi: “An Efficient Vector-valued Belief Propagation Decoder for Scalable Quadrature Spatial Modulation,” Proc. IEEE Communication Theory Workshop (CTW 2022), Oct 2-8, 2022.
IEEE CTW – Marbella, Spain – Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, David González González and Osvaldo Gonsa: “Asymmetric Bilinear Message Passing for Joint Communications and Environment Sensing,” Proc. IEEE Communication Theory Workshop (CTW 2022), Oct 2-8, 2022.
IEEE CTW – Marbella, Spain – Ivan Morales, Kengo Ando, Omid Taghizadeh, Giuseppe Thadeu Freitas de Abreu: ‘Scalable Secrecy Amplification for CF-mMIMO,” Proc. IEEE Communication Theory Workshop (CTW 2022), Oct 2-8, 2022.
IEEE CTW – Marbella, Spain – Kengo Ando, Koji Ishibashi and Giuseppe Thadeu Freitas de Abreu: “Robust Tensor Decomposition for CFmMIMO with Heterogeneous Users and Imperfect CSI,” Proc. IEEE Communication Theory Workshop (CTW 2022), Oct 2-8, 2022.
CISIS – Salamanca, Spain – Seiya Otsuka, Hiroki Iimori, Kengo Ando, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi and Naoki Ishikawa: “Analysis of Secret Key Agreement Protocol for Massive MIMO Systems,” International Conference on Computational Intelligence in Security for Information Systems (CISIS), Sep. 2022.
IEICE Radio Communication Systems Conference – Yuma Katsuki, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi and Naoki Ishikawa: “Non-coherent Gaussian Modulation for Covert Communications,” in Proc. IEICE Radio Communication Systems Conference, Aug. 2022.
IEICE Radio Communication Systems Conference – Sota Uchimura, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Design of Coordinated Multi-Point Beamforming for Millimeter-Wave OFDM With Random Blockage,” in Proc. IEICE Radio Communication Systems Conference, Aug. 2022.
IEEE ICC – Seoul, Korea – Hiroki Iimori, Takumi Takahashi, Hyeon Seok Rou, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu, David González G., and Osvaldo Gonsa: “Grant-Free Access for Extra-Large MIMO Systems Subject to Spatial NonStationarity,” IEEE International Conference on Communications (ICC), May 2022.
IEICE Radio Communication Systems Conference – Yuma Katsuki, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi and Naoki Ishikawa: “Physical Layer Security Scheme That Exploits an Optimization Method As a One-Way Function,” in Proc. IEICE Radio Communication Systems Conference, Mar. 2022.

2021

Continental AG and Jacobs University Bremen – Hyeon Seok Rou, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, David González G, Andreas Andrae, and Osvaldo Gonsa: “Greedy Sparse Decoder for Quadrature Spatial Modulation,” Reference Number: 2021E04288 DE.
Continental AG and Jacobs University Bremen – Hyeon Seok Rou, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, David González G, Andreas Andrae, and Osvaldo Gonsa: “Optimal Index Vector Selection Algorithm for Spatial Modulation,” Reference Number: 2021E04247 DE.
Continental AG and Jacobs University Bremen – Hyeon Seok Rou, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, David González G, Andreas Andrae, and Osvaldo Gonsa: “Optimal and Scalable Quadrature Space-Time Modulation (OS-QSM) Scheme,” Reference Number: 2021E04245 DE.
Continental AG and Jacobs University Bremen – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, David González G, Andreas Andrae, and Osvaldo Gonsa: “Method for Modeling Visible Clusters and Non-stationarities in XL-MIMO systems,” Reference Number: 2021E04242 DE.
Continental AG and Jacobs University Bremen – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, David González G, and Osvaldo Gonsa: “Method of Joint User Activity Detection and Channel Information Estimation in Extra-Large MIMO (XL-MIMO) Systems with Non-Stationarities,” Apr. 2021.
University of Electro-Communications – Kengo Ando, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, and Koji Ishibashi: “Method of Access Point Control and Communications,” Application Number: 2021-025816, Feb. 2021.
Continental AG and Jacobs University Bremen – Hyeon S. Rou, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, David González G, and Osvaldo Gonsa: “A Method of Scalable Space-Time Quadrature Spatial Modulation for Multidimensional Wireless Systems,” Feb. 2021.
IEEE Access – Kengo Ando, Hiroki Iimori, Koji Ishibashi, and Giuseppe Thadeu Freitas de Abreu: “Uplink Signal Detection for Scalable Cell-Free Massive MIMO Systems with Robustness to Rate-Limited Fronthaul,” IEEE Access, vol. 9, pp. 102770–102782, Jul. 2021.
IEEE Open Journal of the Communications Society – Lorenzo Mucchi, Sara Jayousi, Stefano Caputo, Erdal Panayirci, Shahriar Shahabuddin, Jonathan Bechtold, Ivan Morales, Andrei Stoica, Giuseppe Thadeu Freitas de Abreu, and Herald Haas: “Physical-Layer Security in 6G Networks,” IEEE Open J. Commun. Society, vol. 2, pp. 1901–1914, Aug. 2021.
IEEE Transactions on Vehicular Technology – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, David González G, and Osvaldo Gonsa: “Mitigating Channel Aging and Phase Noise in Millimeter Wave MIMO Systems,” IEEE Trans. Veh. Tech., vol. 70, no. 7, pp. 7237–7242, Jul. 2021.
IEEE Access – Liming Hou, Feng Lian, Shuncheng Tan, Cong’an Xu and Giuseppe Thadeu Freitas de Abreu: “Robust Generalized Labeled Multi-Bernoulli Filter for Multitarget Tracking with Unknown Non-stationary Heavy-tailed Measurement Noise,” IEEE Access, vol 9, July 2021.
IEEE Transactions on Wireless Communications – Hiroki Iimori, Takumi Takahashi, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu, and Wei Yu: “Grant-Free Access via Bilinear Inference for Cell-Free MIMO with Non-Orthogonal Pilots,” IEEE Transactions on Wireless Communications, vol. 20, no. 11, pp. 7694–7710, Nov. 2021.
IEEE Acccess – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Omid Taghizadeh, Razvan-Andrei Stoica, Takanori Hara, and Koji Ishibashi: “A Stochastic Gradient Descent Approach for Hybrid MmWave Beamforming with Blockage and CSI-Error Robustness,” IEEE Access, vol. 9, pp. 74471 – 74487, May 2021.
IEEE Open Journal of the Communications Society – Omid Taghizadeh, Slawomir Stanczak, Hiroki Iimori, and Giuseppe Thadeu Freitas de Abreu: “Full-Duplex Amplify-and-Forward MIMO Relaying: Impairments Aware Design and Performance Analysis,” IEEE Open J. Commun. Society, vol. 2, pp. 1249 – 1266, May 2021.
IEEE Open Journal of the Communications Society – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Takanori Hara, Koji Ishibashi, Razvan-Andrei Stoica, David González G, and Osvaldo Gonsa: “Robust Symbol Detection in Overloaded NOMA Systems,” IEEE Open J. Commun. Society, vol.2, pp. 512 – 533, March 2021.
IEICE Radio Communication Systems Conference – Kendo Ando, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, and Koji Ishibashi: “Beamforming Design and Secrecy Capacity analysis for Cell-Free mMIMO,” in Proc. IEICE Radio Communication Systems Conference, Oct. 2021.
IEICE Radio Communication Systems Conference – Shuto Fukue, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “A Study on Resource Allocation and Beamforming Design via Geometric Mean Maximization for Cell-free Massive MIMO Systems with Dynamic TDD,” in Proc. IEICE Radio Communication Systems Conference, Oct. 2021.
IEICE Radio Communication Systems Conference – Takumi Takahashi, Hiroki Iimori, Kengo Ando, Koji Ishibashi, Shinsuke Ibi, and Giuseppe Abreu: “Joint Channel and Data Estimation for Scalable Cell-Free Massive MIMO Systems with Low-Resolution ADCs,” in Proc. IEICE Radio Communication Systems Conference, Oct. 21–22, 2021.
IEICE RCS – Japan – Shuto Fukue, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “A Study on User-Fair Dynamic TDD for Cell-Free Massive MIMO Systems,” Proc. IEICE General Conference, vol. 121, no. 210, RCS2021-121, pp. 19-24, Oct. 2021.
IEICE Radio Communication Systems Conference – Kendo Ando, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Takumi Takahashi, and Koji Ishibashi: “Antenna Configuration and Robust Receiver Design for Scalable Cell-Free Massive MIMO with Capacity Limited Fronthaul ,” in Proc. IEICE Radio Communication Systems Conference, Aug. 2021.
IEICE Radio Communication Systems Conference – Sota Uchimura, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi,: “Low-Complexity Robust Beamforming Design for Millimeter-Wave Communications with Random Blockage,” in Proc. IEICE Radio Communication Systems Conference, Aug. 2021.
IEICE Radio Communication Systems Conference – Shuto Fukue, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Resource Allocation and Beamforming Design Considering User Fairness for Cell-Free Massive MIMO System with Dynamic TDD,” in Proc. IEICE Radio Communication Systems Conference, vol. 121, no. 153, RCS2021-115, pp. 85-90, Aug. 2021.
IEICE Radio Communication Systems Conference – Kengo Ando, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, and Koji Ishibashi: “Tensor-Aided Beamforming Design for Full Duplex Cell-Free MIMO,” in Proc. IEICE Radio Communication Systems Conference, Jun. 23–25, 2021.
IEICE RCS – Japan – Hiroki Iimori, Takumi Takahashi, Koji Ishibashi and Giuseppe Thadeu Freitas de Abreu: “Bilinear Inference for Grant-Free Access in Cell-Free MIMO Systems,” Proc. IEICE General Conference, Mar. 9-12, 2021.
IEICE RCS – Beppu, Japan – Kengo Ando, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Tensor-aided Beamforming Design for Cell-Free MIMO,” Proc. IEICE Technical Committee on Radio Communication Systems Workshop, Mar. 3-5, 2021.

2020

Arxiv – 6G White Paper – Mika Ylianttila, Raimo Kantola, Andrei Gurtov, Lozenzo Mucchi, Ian Oppermann, Zheng Yan, Tri Hong Nguyen, Fei Liu, Tharaka Hewa, Madhusanka Liyanage, Ahmad Ijaz, Juha Partala, Robert Abbas, Artur Hecker, Sara Jayousi, Alessio Martinelli, Stefano Caputo, Jonathan Bechtold, Ivan Morales, Andrei Stoica, Giuseppe Thadeu Freitas de Abreu, Shahriar Shahabuddin, Erdal Panayirci, Harald Haas, Tanesh Kumar, Basak Ozan Ozparlak, Juha Röning: “Research challenges for Trust, Security and Privacy,” in Arxiv – 6G White Paper
WIOsense GmbH – Jonathan Bechtold, Ivan Morales, Andrei Stoica and Giuseppe Thadeu Freitas de Abreu: “Verfahren und Vorrichtung zur Erkennung sowohl von digitalen decode-forward Relais als auch transparenten amplify-forward Relais in drahtlosen Peer-to-Peer- Näherungsverbindungen,” IPR-102020133526.1 DE, Dec. 2020.
Continental AG and Jacobs University Bremen – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Razvan-Andrei Stoica, David Gonzales, Andreas Andrae and Osvaldo Gonsa: “Estimation Method of Discrete Digital Signals in Noisy Overloaded Wireless Communication Systems with CSI Errors,” IPR-2020E01911 DE, Mar. 2020.
Continental AG and Jacobs University Bremen – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Razvan-Andrei Stoica, David Gonzales, Andreas Andrae and Osvaldo Gonsa: “Method of Discrete Digital Signal Recovery in Noisy Overloaded Wireless Communication Systems in the Presence of Hardware Impairments,” IPR-2020E01916 DE, Mar. 2020.
IEEE Access – Naoya Hirosawa, Hiroki Iimori, Koji Ishibashi and Giuseppe Thadeu Freitas de Abreu: “Minimizing Age of Information in Energy Harvesting Wireless Sensor Networks”, IEEE Access, Nov 2020.
IEEE Wireless Communications Letters – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Omid Taghizadeh, Razvan-Andrei Stoica, Takanori Hara and Koji Ishibashi: “Stochastic Learning Robust Beamforming for Millimeter-Wave Systems with Path Blockage,” IEEE Wireless Communication Letters, Jul.2020.
APS Physical Review E – Luiscarlos A. Torres-Sánchez, Giuseppe Thadeu Freitas de Abreu and Stefan Kettemann: “Analysis of the dynamics and topology dependencies of small perturbations in electric transmission grids”, APS Physical Review E. vol. 101, no. 1, Jan. 2020
IEEE GLOBECOM – Taipei, Taiwan – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, and Koji Ishibashi: “Full-Duplex MIMO Systems with Hardware Limitations and Imperfect Channel Estimation,” Proc. IEEE Global Communications Conference (GLOBECOM), Dec. 2020.
IEEE GLOBECOM – Taipei, Taiwan – Omid Taghizadeh, Slawomir Stanczak, Hiroki Iimori, and Giuseppe Thadeu Freitas de Abreu: “Full-Duplex AF MIMO Relaying: Impairments Aware Design and Performance Analysis,” Proc. IEEE Global Communications Conference (GLOBECOM), Dec. 2020.
IEICE RCS – Japan – Shuto Fukue, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Dynamic TDD Allocation via Fractional Programming for Cell-Free Massive MIMO Systems,” Proc. IEICE Technical Committee on Radio Communication Systems Workshop, vol. 120, no. 298, RCS2020-151, pp. 91-96, Dec. 17-18, 2020.
IEEE Asilomar CSSC – Pacific Grove, USA – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Omid Taghizadeh, and Koji Ishibashi: “Discrete-Aware Matrix Completion via Proximal Gradient,” Proc. Asilomar Asilomar Conference on Signals, Systems and Computers, Nov. 2020.
IEEE FUSION – Online – Liming Hou, Feng Lian and Giuseppe Thadeu Freitas de Abreu: “Robust delta-Generalized Labeled MultiBernoulli Filter for Nonlinear Systems with Heavy-tailed Noises,” Proc. IEEE 23rd International Conference on Information Fusion (FUSION), Jul. 6-9.
IEICE RCS – Beppu, Japan – Kengo Ando, Hiroki Iimori, Koji Ishibashi and Giuseppe Thadeu Freitas de Abreu: “Discreteness Aware Receiver Design and Antenna Configuration for Distributed MIMO,” Proc. IEICE Technical Committee on Radio Communication Systems Workshop, Apr. 23–24, 2020.
IEICE RCS – Beppu, Japan – Naoya Hirosawa, Hiroki Iimori, Koji Ishibashi and Giuseppe Thadeu Freitas de Abreu: “Optimal Transmission Strategy Realizing Minimum Age-of-Information of Energy Harvesting Users over Multiple-Access Channels,” Proc. IEICE Technical Committee on Radio Communication Systems Workshop, Apr. 23–24, 2020.
IEEE ICOIN – Barcelona, Spain – Hiroki Iimori, Razvan-Andrei Stoica and Giuseppe Thadeu Freitas de Abreu: “Robust Sparse Recovery of mmWave Channel Estimates via Fractional Programming”, Proc. IEEE International Conference on Information Networking, (ICOIN 2020), Jan. 7 – 20, 2020.

2019

Continental AG and Jacobs University Bremen – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Razvan-Andrei Stoica, David Gonzales, Andreas Andrae and Osvaldo Gonsa: “Advanced Methods of Estimating Transmit Symbols Vectors in Overloaded Communication Channels,” IPR-2019E07870 DE, Nov. 2019.
Continental AG and Jacobs University Bremen – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, David Gonzales, Andreas Andrae and Osvaldo Gonsa: “Method of Estimating Transmit Symbol Vectors in an Overloaded Communication Channel,” IPR-2019E03560 DE, May 2019.
Continental AG and Jacobs University Bremen – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Razvan-Andrei Stoica, David Gonzales, Andreas Andrae and Osvaldo Gonsa: “Reconstruction Method of Discrete Digital Signals in Noisy Overloaded Wireless Communication Systems,” IPR-2020E01334 DE, Feb. 2019.
IEEE Transactions on Wireless Communications – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu and George Alexandropoulos: “MIMO Beamforming Schemes for Hybrid SIC FD Radios with Imperfect HW and CSI,” IEEE Transactions on Wireless Communications, July, 2019
IEEE Access – Razvan-Andrei Stoica, Giuseppe Thadeu Freitas de Abreu, Takanori Hara and Koji Ishibashi: “Massively Concurrent Non-orthogonal Multiple Access for 5G Networks and Beyond”, IEEE Access, June 2019.
IEEE Access – Razvan-Andrei Stoica, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi: “Frame Theory and Fractional Programming for Sparse Recovery-based mmWave Channel Estimation,” IEEE Access, vol. 7, pp. 150757–150774, Oct. 2019.
IEEE SITA – Kagoshima, Japan – Shuto Fukue, Hiroki Iimori, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu and Shigeru Takayama: “Cooperative Pilot Design for Multi-Cell Massive MIMO Systems under Pilot Contamination,” The 42nd Symposium on Information Theory and its Applications (SITA 2019), Nov. 26 – 29, 2019.
IEEE SITA – Kagoshima, Japan – Hiroki Iimori, Koji Ishibashi and Giuseppe Thadeu Freitas de Abreu: “A Discreteness-Aware Linear MMSE Filter,” The 42nd Symposium on Information Theory and its Applications (SITA 2019), Nov. 26 – 29, 2019.
IEEE CAMSAP – Guadalupe, French West Indies – Razvan-Andrei Stoica, Hiroki Iimori and Giuseppe Thadeu Freitas de Abreu: “Multiuser Detection for Large Massively Concurrent NOMA Systems via Fractional Programming”, Proc. IEEE Conference on Computational Advances in Multi-sensor Adaptive Processing, (CAMSAP 2019), Dec. 15 – 18, 2019.
IEEE CAMSAP – Guadalupe, French West Indies – Naoya Hirosawa, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Age-of-Information Minimization in Two-User Multiple Access Channel with Energy Harvesting”, Proc. IEEE Conference on Computational Advances in Multi-sensor Adaptive Processing, (CAMSAP 2019), Dec. 15 – 18, 2019.
IEEE Asilomar CSSC – Monterey, USA – Razvan-Andrei Stoica, Hiroki Iimori and Giuseppe Thadeu Freitas de Abreu: “Sparsely-structured Multiuser Detection for Large Massively Concurrent NOMA Systems”, Proc. IEEE Fifty-third Asilomar Conference on Signals, Systems and Computers (Asilomar 2019), November 3rd – 8th 2019.
IEEE Asilomar CSSC – Monterey, USA – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, David Gonzalez and Osvaldo Gonzales: “Joint Detection in Massive Overloaded Wireless Systems via Mixed-Norm Discrete Vector Decoding”, Proc. IEEE Fifty-third Asilomar Conference on Signals, Systems and Computers (Asilomar 2019), November 3rd – 8th 2019.
IEICE RCS – Tokyo, Japan – Hiroki Iimori, Koji Ishibashi and Giuseppe Thadeu Freitas de Abreu: “Robust Transmit Beamforming Design via Fractional Programming for Downlink Power-Domain NOMA Systems”, IEICE Radio Communications Symposium (in Japanese), RCS2019-7, July 2019.
IEEE SPAWC – Cannes, France – Razvan-Andrei Stoica and Giuseppe Thadeu Freitas de Abreu: “A Low-complexity Receiver for Massively Concurrent Non-orthogonal Multiple Access”, Proc. IEEE International Workshop on Signal Processing Advances in Communications (SPAWC 2019), July 2nd – 5th 2019.
IEEE WiOpt – Avignon, France – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi: “Fractional Programming for Robust TX BF Design in Multi-User/Single-Carrier PD-NOMA”, Proc. IEEE International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, (WiOpt 2019), 3-7 June, 2019.
IEEE WCNC – Marrakech, Morocco – Razvan-Andrei Stoica and Giuseppe Thadeu Freitas de Abreu: “Frame-theoretic Precoding and Beamforming Design for Robust mmWave Channel Estimation”, Proc. IEEE Wireless Communications and Networking Conference, (WCNC 2019), 15-18 April, 2019.
IEEE WCNC – Marrakech, Morocco – Takanori Hara, Razvan-Andrei Stoica, Hiroki Iimori, Koji Ishibashi and Giuseppe Thadeu Freitas de Abreu: “On the Sum-Rate Capacity and Spectral Efficiency Gains of Massively Concurrent NOMA Systems”, Proc. IEEE Wireless Communications and Networking Conference, (WCNC 2019), 15-18 April, 2019.
IEEE WCNC – Marrakech, Morocco – Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, George Alexandropoulos and Koji Ishibashi: “Transmission Strategies in Imperfect Bi-directional Full-Duplex MIMO Systems”, Proc. IEEE Wireless Communications and Networking Conference, (WCNC 2019), 15-18 April, 2019.

2018

IEEE Systems Journal – Samip Malla and Giuseppe Thadeu Freitas de Abreu: “SINR Distributions for Robust MIMO TX-Power Minimization with Controlled Outage,” IEEE Systems Journal, Vol. 12, No. 3, pp. 2308 – 2319, Sep. 2018.
IEEE Transactions on Wireless Communications – Alireza Ghods and Giuseppe Thadeu Freitas de Abreu: “Complex-domain Super MDS: A New Framework for Wireless Localization with Hybrid Information,” IEEE Transactions on Wireless Communications, vol. 17, no. 11, pp. 7364 – 7378, Aug. 2018.
IEEE Transactions on Wireless Communications – Shun Ogata, Koji Ishibashi, and Giuseppe Thadeu Freitas de Abreu: “Optimized Frameless ALOHA for Cooperative Base Stations with Overlapped Coverage Areas,” IEEE Transactions on Wireless Communications, vol. 17, no. 11, pp. 7486 – 7499, Aug. 2018.
ELSEVIER Information Sciences – Simona Cabuz and Giuseppe Thadeu Freitas de Abreu: “Causal Inference for Multivariate Stochastic Process Prediction” Elsevier Information Sciences – Informatics and Computer Science Intelligent Systems Applications, Vol. 448–449, Pages 134-148, June 2018.
IEEE Systems Journal – Satyanarayana Vuppala and Giuseppe Thadeu Freitas de Abreu: “Asymptotic Secrecy Analysis of Random Networks with Colluding Eavesdroppers”, IEEE Systems Journal, vol. 12, no. 1, pp. 871 – 880, Mar. 2018.
IEEE Transactions on Communications – Satyanarayana Vuppala, Yohannes Jote Tolossa, Georges Kaddoum and Giuseppe Thadeu Freitas de Abreu: “On the Physical Layer Security Analysis of Hybrid Millimeter Wave Networks” IEEE Transactions on Communications, vol. 66, no. 3, pp. 1139 – 1152, Mar. 2018.
IEEE SITA – Iiwaki, Japan – Hiroki Iimori, Shigeru Takayama, Razvan-Andrei Stoica and Giuseppe Thadeu Freitas de Abreu: “Frame-Theoretic Precoding Design via QR Decomposition for Non-Orthogonal Multiple Access,” The 41st Symposium on Information Theory and its Applications (SITA 2018), Dec. 18 – 21, 2018.
IEEE SITA – Iiwaki, Japan – Shunya Nishikawa, Hiroki Iimori, Shigeru Takayama, Razvan-Andrei Stoica and Giuseppe Thadeu Freitas de Abreu: “Precoding Design via Frame-Theoretic Approach for Millimeter
Wave Non-Orthogonal Multiple Access,” The 41st Symposium on Information Theory and its Applications (SITA 2018), Dec. 18 – 21, 2018.
IEEE GlobalSIP – Anaheim (CA), USA – Hiroki Iimori, George Alexandropoulos and Giuseppe Thadeu Freitas de Abreu: “Full-Duplex Transmission Optimization for Bi-directional MIMO links with QoS Guarantees,” Proc. IEEE 6th Global Conference on Signal and Information Processing (GlobalSIP 2018), November 26th – 29th, Nov., 2018.
IEEE GlobalSIP – Anaheim (CA), USA – Giuseppe Thadeu Freitas de Abreu and Alireza Ghods: “Turbo MRC-SMDS: Low-complexity Cooperative Localization from Hybrid Information,” Proc. IEEE 6th Global Conference on Signal and Information Processing (GlobalSIP 2018), Nov. 26th – 29th, Nov., 2018.
IEEE GlobalSIP – Anaheim (CA), USA – Giuseppe Thadeu Freitas de Abreu and Alireza Ghods: “Hybrid Wireless Localization via Complex-domain Isometric Embedding,” Proc. IEEE 6th Global Conference on Signal and Information Processing (GlobalSIP 2018), November 26th – 29th, Nov., 2018.
IEEE Asilomar CSSC – Monterey, USA – Razvan-Andrei Stoica and Giuseppe Thadeu Freitas de Abreu: “Massively Concurrent NOMA: A Frame-Theoretic Design for Non-Orthogonal Multiple Access,”Proc. IEEE Fifty-second Asilomar Conference on Signals, Systems and Computers, (Asilomar 2018), October 28-31, 2018.
IEEE WPNC – Bremen, Germany – Shunya Nishikawa and Giuseppe Thadeu Freitas de Abreu: “Manifold Optimization-based Hybrid TX/RX Precoding for FD Relay mmWave Systems,”Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2018), October 25-26, 2018.
IEEE WPNC – Bremen, Germany – Hiroki Iimori, George Alexandropoulos and Giuseppe Thadeu Freitas de Abreu: “Full-Duplex Bi-directional MIMO under Imperfect CSI and Hardware Impairments,”Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2018), October 25-26, 2018.
IEEE VTC – Chicago, USA – Razvan-Andrei Stoica, Giuseppe Thadeu Freitas de Abreu and Hiroki Iimori: “A Frame-Theoretic Scheme for Robust Millimeter Wave Channel Estimation,”Proc. IEEE Vehicular Communications Conference – Workshop on 5G Millimeter-Wave Channel Measurement, Models, and Systems, (VTC-Workshop 2018), August 27-30, 2018.
IEEE SPAWC – Kalamata, Greece – Hiroki Iimori and Giuseppe Thadeu Freitas de Abreu: “Two-Way Full-Duplex MIMO with Hybrid TX-RX MSE Minimization and Interference Cancellation,” Proc. IEEE International Workshop on Signal Processing Advances in Communications, Jul. 25-28 2018.
IEEE SPAWC – Kalamata, Greece – Sugiyama Kouhei, Hiroki Iimori and Giuseppe Thadeu Freitas de Abreu: “Statistical Analysis of EH Battery State under Noisy Energy Arrivals,” Proc. IEEE International Workshop on Signal Processing Advances in Communications, Jul. 25-28 2018.
IEEE ICC Workshop – Kansas City, USA – Hiroki Iimori and Giuseppe Thadeu Freitas de Abreu: “Performance Analysis of Non-linear Wireless Communications in Ultra Dense Networks”, Proc. IEEE Workshop on Full-duplex Communications for Future Wireless Networks co-located with Proc. IEEE International Conference on Communications, (ICC 2018), Kansas City, USA 20-24 May 2018.
IEICE RCS – Yamaguchi, Japan (Best Paper Award) – Hiroki Iimori and Giuseppe Thadeu Freitas de Abreu: “Joint Design of Multi-tap Analog Canceller and Digital Beamforming for Two-Way Full Duplex MIMO Systems,” IEICE Radio Communications Symposium (in Japanese), vol. 118, no. 12, RCS2018-7, pp. 37-42, April 2018.
IEEE WCNC – Barcelona, Spain – Hiroki Iimori and Giuseppe Thadeu Freitas de Abreu: “Rate-Optimal Communication under Non-linear Gaussian
Noise via Constellation Shaping”, Proc. IEEE Wireless Communications and Networking Conference, (WCNC 2017), 15-18 April, 2018.
IEEE WCNC – Barcelona, Spain – Alireza Ghods and Giuseppe Thadeu Freitas de Abreu: “Complex Domain Super MDS: Computationally Efficient Localization via Ranging and Angle Information”, Proc. IEEE Wireless Communications and Networking Conference, (WCNC 2017), 15-18 April, 2018.
IEEE WCNC – Barcelona, Spain – Cristian Pan˘a, Stefano Severi and Giuseppe Thadeu Freitas de Abreu: “Super-Accurate Source Localization via Multiple Measurement Vectors and Compressed Sensing”, Proc. IEEE Wireless Communications and Networking Conference, (WCNC 2017), 15-18 April, 2018.
IEICE RCS – Yokosuka, Japan – Hiroki iimori and Giuseppe Thadeu Freitas de Abreu: “Rate Maximization via Probabilistic Constellation Shaping in AWGN Channels with Non-linear Distortion,” IEICE Radio Communications Symposium (in Japanese), vol. 117, no. 456, RCS2017-402, pp. 459-464, Feb. 2018.
IEICE RCS – Yokosuka, Japan – Shunya Nishikawa, Hiroki iimori and Giuseppe Thadeu Freitas de Abreu: “Non-orthogonal Multiple Access design via Frame Theory,” IEICE Radio Communications Symposium (in Japanese), vol. 117, no. 456, RCS2017-402, pp. 465-468, Feb. 2018.

2017

IEEE Systems Journal – Yohannes Jote Tolossa, Satyanarayana Vuppala, Georges Kaddoum and Giuseppe Thadeu Freitas de Abreu: “On the Uplink Secrecy Capacity Analysis in D2D-Enabled Cellular Networks” IEEE Systems Journal, May 2017.
IEEE Transactions on Intelligent Transport Systems – Razvan-Andrei Stoica, Stefano Severi, and Giuseppe Thadeu Freitas de Abreu: “A self-organizing frequency approach to 802.11p channel estimation”, IEEE Transactions on Intelligent Transportation Systems, Vol. 18, No. 7, pp. 1930 – 1942, Jul. 2017.
IEEE Internet of Things – Yohannes Jote Tolossa, Satyanarayana Vuppala, and Giuseppe Thadeu Freitas de Abreu: “Secrecy Rate analysis in Multi-Tier Heterogeneous Networks over Generalized Fading Model”, IEEE Internet of Things, Vol. 4, No. 1, Feb. 2017.
IEEE Internet of Things – Hiroki Kawabata, Koji Ishibashi, Satyanarayana Vuppala and Giuseppe Thadeu Freitas de Abreu: “Robust Relay Selection for Large-Scale Energy Harvesting IoT Networks,” IEEE Internet of Things, Vol. 4, No. 2, pp 384-392, April 2017.
IEEE CAMSAP – Curaçao, Dutch Antilles – Hiroki Iimori, Razvan-Andrei Stoica and Giuseppe Thadeu Freitas de Abreu: “Constellation Shaping for Rate Maximization in AWGN Channels with Non-linear Distortion”, Proc. IEEE Conference on Computational Advances in Multi-sensor Adaptive Processing, (CAMSAP 2017), Dec. 10 – 13, 2017.
IEICE SITA – Niigata, Japan – Hiroki Iimori, Tatsuya Uchida and Giuseppe Thadeu Freitas de Abreu : “ Statistical Model of Non-Linear Additive Noisy Wireless Channels”, The 40th Symposium on Information Theory and its Applications (SITA 2017), Niigata, Japan, Nov. 29 – Dec. 1, 2017.
IEICE SITA – Niigata, Japan – Shunya Nishikawa, Hiroki Iimori and Giuseppe Thadeu Freitas de Abreu : “Construction of Complex Incoherent UNTF via Convex Optimization”, The 40th Symposium on Information Theory and its Applications (SITA 2017), Niigata, Japan, Nov. 29 – Dec. 1, 2017.
IEICE SITA – Niigata, Japan – Kohei Sugiyama, Hiroki Iimori and Giuseppe Thadeu Freitas de Abreu : “Battery State Statistics in EH Nodes with Random Energy Sources”, The 40th Symposium on Information Theory and its Applications (SITA 2017), Niigata, Japan, Nov. 29 – Dec. 1, 2017.
IEICE SITA – Niigata, Japan – Ryuto Asano and Giuseppe Thadeu Freitas de Abreu : “Sparse Signal Reconstruction via Genetic Algorithm”, The
40th Symposium on Information Theory and its Applications (SITA 2017), Niigata, Japan, Nov. 29 – Dec. 1, 2017.
IEEE WPNC – Bremen, Germany – Alireza Ghods, Stefano Severi, and Giuseppe Thadeu Freitas de Abreu: “MRC Implementation of Super MDS for Efficient 2D Localization,”Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2017), October 25-26, 2017.
IEEE WPNC – Bremen, Germany – Benoit Denis and Cristian Pana and Giuseppe Thadeu Freitas de Abreu: “Mobile Target Localization through Low Complexity Compressed Sensing with Iterative Alternate Coordinates Projections,”Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2017), October 25-26, 2017.
IEEE ISWCS – Bologna, Italy – Samip Malla and Giuseppe Thadeu Freitas de Abreu: “Transmission Strategies in Multi-User Millimeter Wave Systems”, Proc. IEEE International Symposium on Wireless Communication Systems (ISWCS 2017), August 28-31, 2017.
IEEE SPAWC – Hokkaido, Japan – Shun Ogata, Koji Ishibashi, and Giuseppe Thadeu Freitas de Abreu: “Multi-Access Diversity Gain via Multiple Base Station Cooperation in Frameless ALOHA,” Proc. IEEE International Workshop on Signal Processing Advances in Communications, Jul. 3-6 2017.
IEEE ICC – Paris, France – Alireza Ghods, Stefano Severi, and Giuseppe Thadeu Freitas de Abreu: “Cholesky MDS: A Fast and Efficient Heterogeneous Localization Algorithm”, Proc. IEEE International Conference on Communications, (ICC 2017), Paris, France, May 21-25, 2017.
IEICE RCS – Nakatadogun, Japan – Shun Ogata, Koji Ishibashi, and Giuseppe Thadeu Freitas de Abreu: “On Generalized Analysis for Packet Loss Rate of Frameless ALOHA with Multiple Base Station Cooperation,” IEICE Radio Communications Symposium (in Japanese), vol. 117, no. 11, pp. 83-88, Apr. 24-25 2017.
AME – Dortmund, Germany – Cristian Pana and Giuseppe Thadeu Freitas de Abreu: “An adaptive approach to non-parametric estimation of dynamic probability density functions,”Proc. Automotive Meets Electronics, (AME 2017), March 7-8, 2017.

2016

IEEE Transactions on Wireless Communications – Omotayo Oshiga, Stefano Severi and Giuseppe Thadeu Freitas de Abreu: “Superresolution Multipoint Ranging with Optimized Sampling via Orthogonally Designed Golomb Rulers,” IEEE Transactions on Wireless Communications, vol. 15, no. 1, 2016.
IEEE ISWCS – Poznan, Poland – Yohannes Jote Tolossa and Giuseppe Thadeu Freitas de Abreu: “Robust Weighted Sum Rate Maximization over Full Duplex Multi-User MIMO Systems Under Imperfect CSIT”, Proc. IEEE International Symposium on Wireless Communication Systems (ISWCS 2016), August 20-23, 2016.
IEEE ISWCS – Poznan, Poland – Samip Malla and Giuseppe Thadeu Freitas de Abreu: “Transmit Power Minimization in Multi-User Millimeter Wave Systems”, Proc. IEEE International Symposium on Wireless Communication Systems (ISWCS 2016), August 20-23, 2016.
IEEE ISWCS – Poznan, Poland (Best Paper Award) – Samip Malla and Giuseppe Thadeu Freitas de Abreu: “Channel Estimation in Millimeter Wave MIMO Systems: Sparsity Enhancement via Reweighting”, Proc. IEEE International Symposium on Wireless Communication Systems (ISWCS 2016), August 20-23, 2016.
IEEE WPNC – Bremen, Germany – Cristian Pana and Giuseppe Thadeu Freitas de Abreu: “An adaptive approach to non-parametric estimation of dynamic probability density functions,”Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2016), October 19-20, 2016.
IEEE Asilomar CSSC – Monterey, USA – Yohannes Jote Tolossa and Giuseppe Thadeu Freitas de Abreu: “Physical layer security analysis for cooperative communications with full duplex relaying under Nakagami-m fading model,”Proc. IEEE Fiftyth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2016), November 6-9, 2016.
IEEE SPAWC – Edinburgh, UK – Jhanak Parajuli, Satyanarayana Vuppala, and Giuseppe Thadeu Freitas de Abreu: “Degrees of Freedom of Threeuser MIMO IC via Receiver Chain Alignment”, Proc. IEEE International Workshop on Signal Processing Advances in Communications, (SPAWC 2016), July 03-06, 2016.
IEEE IV-WCCP – Gothenburg, Sweden – Alireza Ghods, Stefano Severi, and Giuseppe Thadeu Freitas de Abreu: “Localization in V2X Communication Networks”, Proc. IEEE Intelligent Vehicles Symposium, Workshop on Cooperative Communication and Positioning, (IV-CCP 2016), June 19-22, 2016.
IEEE IV-WCCP – Gothenburg, Sweden – Razvan-Andrei Stoica, Stefano Severi, and Giuseppe Thadeu Freitas de Abreu: “On Prototyping IEEE802.11p Channel Estimation in Real-world Environments using GNU Radio”, Proc. IEEE Intelligent Vehicles Symposium, Workshop on Cooperative Communication and Positioning, (IV-CCP 2016), June 19-22, 2016.
IEEE ICC – Kuala Lumpur, Malaysia – Remun Koirala, Stefano Severi, and Giuseppe Thadeu Freitas de Abreu: “Battery Size Optimization for Energy Harvesting Wireless Nodes”, Proc. IEEE International Conference on Communications, (ICC 2016), Kuala Lumpur, Malaysia, May 23-27, 2016.
International Conference on Emerging Trends in Engineering – Pooja Kenchetty. P, Iimori Hiroki,Giuseppe Thadeu Freitas de Abreu, and K. Rajesh Shetty: “A Simple Massive MIMO Scheme based on the Overlap of Space Time Codes,” Proc. International Conference on Emerging Trends in Engineering, (ICETE 2016), May 12-13, 2016.
IEICE Technical Committee on Smart Radio – Nagasaki, Japan – Hiroki Kawabata, Koji Ishibashi, Vuppala Satyanarayana, Giuseppe Thadeu Freitas de Abreu: “Outage Probability Analysis of Energy Harvesting Relay Selection Using Channel Distribution Information in Large-Scale Networks”, IEICE Technical Committee on Smart Radio, vol. 115, no. 411, SR2015-84, pp. 63-68, Nagasaki, Japan, Jan. 21-22, 2016.

2015

IEEE Wireless Communications Letters – Satyanarayana Vuppala and Giuseppe Thadeu Freitas de Abreu: “Secrecy Outage Analysis in Cellular Networks,” IEEE Wireless Communications Letters, vol. 4, no. 2, April 2015.
IEEE Journal on Selected Areas in Communications – Samuel van de Velde, Giuseppe Thadeu Freitas de Abreu and Heidi Steenkamp: “Improved Censoring and NLOS Avoidance for Wireless Localization in Dense Networks,” IEEE Journal on Selected Areas in Communications – Special Issue on Location-Awareness for Radios and Networks, no. 99, May 2015.
IET Communications – Wensheng Zhang, Pavel Zheltov and Giuseppe Thadeu Freitas de Abreu: “Simple and Exact Extreme Eigenvalue Distributions of Finite Wishart Matrices,” IET Communications, vol. 9, iss. 7, pp 990-998, April, 2015.
IEICE SITA – Kojima, Japan – Shun Ogata, Koji Ishibashi and Giuseppe Thadeu Freitas de Abreu : “Analysis of Packet Decoding Probability for Frameless ALOHA with Multiple Base Stations”, The 38th Symposium on Information Theory and its Applications (SITA 2015), Kojima, Japan, pp. 113 – 118, Nov. 24 – 27 , 2015.
IEICE SITA – Kojima, Japan – Hiroki Kawabata, Koji Ishibashi, Satyanarayana Vuppala and Giuseppe Thadeu Freitas de Abreu : “Design and Analysis of Energy Harvesting Relay Selection Using Channel Distribution Information”, The 38th Symposium on Information Theory and its Applications (SITA 2015), Kojima, Japan, pp. 191 – 196, Nov. 24 – 27 , 2015.
IEEE VNC – Kyoto, Japan – Razvan-Andrei Stoica, Stefano Severi and Giuseppe Thadeu Freitas de Abreu: “Learning the vehicular channel through the self-organization of frequencies”, Proc. IEEE Vehicular Networking Conference, (VNC 2015), Dec. 16 – 18 , 2015.
IEEE CAMSAP – Cancun, Mexico – Samip Malla and Giuseppe Thadeu Freitas de Abreu: “Energy Efficiency and Base Station Selection in Massive MIMO Small Cell Hybrid Networks”, Proc. IEEE Conference on Computational Advances in Multi-sensor Adaptive Processing, (CAMSAP 2015), Dec. 13 – 16, 2015.
IEEE Asilomar CSSC – Monterey, USA – Simona Poilinca, Jhanak Parajuli and Giuseppe Thadeu Freitas de Abreu: “Causal Graph Inference”, Proc. IEEE Fourty-Nineth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2015), November 8-11, 2015.
IEEE Asilomar CSSC – Monterey, USA – Jhanak Parajuli and Giuseppe Thadeu Freitas de Abreu: “Interference Alignment Using Alignment Matrix”, Proc. IEEE Fourty-Nineth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2015), November 8-11, 2015.
IEEE Asilomar CSSC – Monterey, USA – Samip Malla, Jhanak Parajuli and Giuseppe Thadeu Freitas de Abreu: “MIMO Power Minimization with Imperfect CSIT and Prescribed Outage”, Proc. IEEE Fourty-Nineth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2015), November 8-11, 2015.
IEEE Asilomar CSSC – Monterey, USA – Remun Koirala, Stefano Severi, Jhanak Parajuli and Giuseppe Thadeu Freitas de Abreu: “Transmission Power Optimization for Energy Harvesting Wireless Nodes”, Proc. IEEE Fourty-Nineth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2015), November 8-11, 2015.
IEICE Society Conference 2015 – Sendai, Japan – Shun Ogata, Koji Ishibashi, and Giuseppe Thadeu Freitas de Abreu: “Optimization of the Target Degree for Frameless ALOHA with Buffer”, IEICE Society Conference 2015, Sendai, Japan, Sep. 8 – 11 , 2015.
IEEE PIMRC – Hong Kong, China – Yohannes Jote Tolossa, Satyanarayana Vuppala and Giuseppe Thadeu Freitas de Abreu: “Physical Layer Security in Cellular Networks under Modified MHCPP Model”, Proc. IEEE Personal Indoor Mobile Radio Communications, (PIMRC 2015), Aug. 30 – Sep. 2, 2015.
IEEE ISWCS – Brussels, Belgium – Yohannes Jote Tolossa, Satyanarayana Vuppala and Giuseppe Thadeu Freitas de Abreu: “Secrecy Outage Analysis of Cognitive Radio Networks with Power Control”, Proc. IEEE International Symposium on Wireless Communication Systems,(ISWCS 2015) , August 25-28, 2015.
IEEE ISWCS – Brussels, Belgium – Samip Malla and Giuseppe Thadeu Freitas de Abreu: “MISO TX-Power Minimization under Imperfect Instantaneous CSIT”, Proc. IEEE International Symposium on Wireless Communication Systems, (ISWCS 2015), August 25-28, 2015.
IEEE ISWCS – Brussels, Belgium – Simona Poilinca and Giuseppe Thadeu Freitas de Abreu: “Nonparametric Estimation of Information Causality between Analog Narrowband Signals”, Proc. IEEE International Symposium on Wireless Communication Systems, (ISWCS 2015), August 25-28, 2015.
IEICE RCS – Sendai, Japan – Shun Ogata, Koji Ishibashi, and Giuseppe Thadeu Freitas de Abreu : “Optimization of Target Degrees for Frameless ALOHA with Multiple Base Stations”, Proc. IEICE Conference on Radio Communication Systems (RCS 2015), vol. 115, no. 160, RCS2015-100, pp. 1-6, Nagano, Japan, Jul. 29 – 31 , 2015.
IEEE ICC – London, UK – Satyanarayana Vuppala, Weigang Liu, Giuseppe Thadeu Freitas de Abreu and Tharmalingam Ratnarajah: “Secrecy Outage of Nakagami-m MISO Channels with Randomly Located Receivers”, Proc. IEEE International Conference on Communications, (ICC 2015), June 8-12, 2015.
IEEE ICC – London, UK – Yohannes Jote Tolossa and Giuseppe Thadeu Freitas de Abreu: “Probabilistic Based TX-Beamformer Design Under Partial CSIT using Optimized SINR Estimates”, Proc. IEEE International Conference on Communications, (ICC 2015), June 8-12, 2015.
IEICE RCS – Akashi, Japan – Hiroki Kawabata, Satyanarayana Vuppala, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi : “Analysis of Energy Harvesting Relay Selection Using Channel Distribution Information”, Proc. IEICE Conference of the Smart Radio Technical Committee, Akashi, Japan, May 28 – 29, 2015.
IEEE WCNC – New Orleans, USA – Samip Malla and Giuseppe Thadeu Freitas de Abreu: “Transmission Strategies Under Imperfect Instantaneous CSIT”, Proc. IEEE Wireless Communications and Networking Conference, (WCNC 2015), March 9-12, 2015.
IEEE WPNC – Dresden, Germany – Best Paper Award – Samuel van de Velde, Giuseppe Thadeu Freitas de Abreu and Heidi Steenkamp: “Bayesian CRLB for hybrid ToA and DoA based wireless localization with anchor uncertainty,” Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2015), March 11-12, 2015.
IEEE WPNC – Dresden, Germany – Omotayo Oshiga and Giuseppe Thadeu Freitas de Abreu: “Efficient Slope Sampling Ranging and Trilateration Techniques for Wireless Localization,” Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2015), March 11-12, 2015.
IEICE Communications Society Conference – Kusatsu, Japan – Shun Ogata, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi, : “Target Degree Distribution Optimization Using Density Evolution for Frameless ALOHA”, Proc. IEICE Communications Society IEICE General Conference 2015, Kusatsu, Japan, March 10-13, 2015.
IEICE Communications Society Conference – Kusatsu, Japan – Hiroki Kawabata, Vuppala Satyanarayana, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi, : “A Study on Energy Harvesting Relay Selection Using Channel Distribution Information”, Proc. IEICE Communications Society IEICE General Conference 2015, Kusatsu, Japan, March 10-13, 2015.
IEICE Radio RCS – Tokyo, Japan – Shun Ogata, Giuseppe Thadeu Freitas de Abreu and Koji Ishibashi, : “Optimization of the Target Degree of Frameless ALOHA”, Proc. IEICE Conference of the Radio Communication Systems Society, March 4, 2015.
IEICE RCS – Tokyo, Japan – Naoki Takeishi, Giuseppe Thadeu Freitas de Abreu and Koji Ishii: “Distributed Multi-Dimensional Spatially Coupled Repeat-Accumulate Codes,” Proc. IEICE Conference of the Radio Communication Systems Society, March 4, 2015.

2014

Jacobs University Bremen – Giuseppe Thadeu Freitas de Abreu and Samip Malla: “Method to Optimize Transmit Power in Cellular System,” IPR-20123, February 2014.
Jacobs University Bremen – Stefano Severi and Giuseppe Thadeu Freitas de Abreu: “Method to Generate Encryption Key for Short-range Communications,” IPR-20122, February 2014.
IEEE PIMRC – Washington DC, USA – Weigang Liu, Satyanarayana Vuppala, Giuseppe Thadeu Freitas de Abreu and Tharmalingam Ratnarajah: “Secrecy Outage in Correlated Nakagami-m Fading,” Proc. IEEE Personal Indoor Mobile Radio Communications (PIMRC 2014), September 2-5, 2014.
IEEE Asilomar CSSC – Monterey, USA – Best Paper – Comm. Syst. Track – Satyanarayana Vuppala, Weigang Liu, Tharmalingam Ratnarajah and Giuseppe Thadeu Freitas de Abreu: “Secrecy Outage Analysis of Cognitive Wireless Networks,” Proc. IEEE Fourty-Eigth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2014), November 2-5, 2014.
IEEE Asilomar CSSC – Monterey, USA – Alireza Ghods, Stefano Severi, Giuseppe Thadeu Freitas de Abreu, Samuel van de Velde and Heidi Steemkamp: “On the Structural Nature of Cooperation in Distributed Network Localization,” Proc. IEEE Fourty-Eigth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2014), November 2-5, 2014.
IEEE Asilomar CSSC – Monterey, USA – Omotayo Oshiga and Giuseppe Thadeu Freitas de Abreu: “Design of Orthogonal Golomb Rulers with Applications in Wireless Localization,” Proc. IEEE Fourty-Eigth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2014), November 2-5, 2014.
IEEE ISWCS – Barcelona, Spain – Omotayo Oshiga and Giuseppe Thadeu Freitas de Abreu: “Analysis of Wireless Localization with Golomboptimized Multipoint Ranging,” Proc. IEEE International Symposium on Wireless Communication Systems , August 26-29, 2014.
EuCNC – Bologna, Italy – Stefano Severi, Francesco Sottile, Giuseppe Thadeu Freitas de Abreu, Clausio Pastrone, Maurizio Spirito and Friedbert Berens: “M2M Technologies: Enablers for a Pervasive Internet of Things,” Proc. European Conference on Networks and Communications 2014, (EuCNC 2014), June 23 – 26, 2014.
IEEE SAM – A Coruña, Spain – João Paulo Miranda, Boris Galkin, Giuseppe Thadeu Freitas de Abreu and Luiz DaSilva: “Experimental Assessment of Eigenvalue-based Detection for Cognitive Radio,” Proc. IEEE Sensor Array and Multichannel Signal Processing Workshop, (SAM 2014), June 22-25, 2014.
IEEE ISIT – Hawaii, USA – Jhanak Parajuli and Giuseppe Thadeu Freitas de Abreu: “A Space-Time TX Scheme for Multicell MISO-IC with Delayed CSIT,” Proc. IEEE International Symposium on Information Theory, (ISIT 2014), June 29 – July 4, 2014.
IEEE ICASSP – Florence, Italy – Koji Ishibashi and Giuseppe Thadeu Freitas de Abreu: “Analysis of RF Energy Harvesting in Large Networks Using Absorption Function,” Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, (ICASSP 2014), May 4-7, 2014.
IEEE VTC – Seoul, Korea – Samuel van de Velde, Giuseppe Thadeu Freitas de Abreu and Heidi Steendam: “Frame Theory and Optimal Anchor Geometries in Wireless Localization,” Proc. IEEE Vehicular Technology Conference, (VTC Spring – 2014), May 18-21, 2014.
IEEE WCNC – Istanbul, Turkey – Stefano Severi, Giuseppe Thadeu Freitas de Abreu, Gianni Pasolini and Davide Dardari: “A Secret Key Exchange Scheme For Near Field Communication,” Proc. IEEE Wireless Communications and Networking Conference, (WCNC 2014), April 6-9, 2014.
IEEE WCNC – Istanbul, Turkey – Omotayo Oshiga, Stefano Severi and Giuseppe Thadeu Freitas de Abreu: “Optimized Super-Resolution Ranging over ToA Measurements,” Proc. IEEE Wireless Communications and Networking Conference, (WCNC 2014), April 6-9, 2014.
IEEE WF-IoT – World Forum on Internet of Things, Seoul, Korea – Davide Macagnano, Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Indoor positioning: A key enabling technology for IoT applications,” Proc. IEEE World Forum on Internet of Things, 2014.
IEEE WF-IoT – World Forum on Internet of Things, Seoul, Korea – Davide Macagnano, Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Localization with heterogeneous information,” Proc. IEEE World Forum on Internet of Things, 2014.
White Pp. 3 European Commission – Information Society Media – Gianmarco Baldini, Maria Chiara Talacchini, Trevor Peirce, Marcus Handte, Domenico Rotondi, Henrich C. Pöhls, Ovidiu Vermesan, Atta Baddii, Bertrand Copigneaux, Daniel Schreckling, Luca Vigano, Gary Steri, Salvatore Piccione, Panagiotis Vlacheas, Vera Stavroulaki, Dimitris Kelaidonis, Ricardo Neisse, Elias Tragos, Philippe Smadja, Christine Hennebert, Martin Serrano, Stefano Severi, Giuseppe Thadeu Freitas de Abreu, Alberto Martínez, Arantxa Rentería: “IoT Governance, Privacy and Security Issues,” in European Commission – Information Society Media (White Paper)

2013

IEEE Transactions on Wireless Communications – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Algebraic Approach for Robust Localization with Heterogeneous Information,” IEEE Transactions on Wireless Communications, vol. 12, no. 10, Oct. 2013.
IEEE Transactions on Information Forensics and Security – Satyanarayana Vuppala and Giuseppe Thadeu Freitas de Abreu: “Unicasting on the Secrecy Graph,” IEEE Transactions on Information Forensics and Security, vol. 8 ,no. 9, 1469 – 1481, September 2013.
IEEE Transactions on Wireless Communications – José Cândido Silveira Santos Filho, Bernardo Vieira Teixeira, Michel Daoud Yacoub and Giuseppe Thadeu Freitas de Abreu: “The RM2 Nakagami Fading Channel Simulator” IEEE Transactions on Wireless Communications, vol. 12, no. 5, 2323 – 2333, May 2013.
MT-ITS – Dresden, Germany – Alireza Ghods, Stefano Severi and Giuseppe Thadeu Freitas de Abreu: “Location Forwarding for Dense Urban Environments,” Proc. Models and Technologies for Intelligent Transportation Systems 2013, (MT-ITS 2013), December 2-4, 2013.
IEEE Asilomar CSSC – Monterey, USA – Davide Macagnano, Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Enhanced Edge Kernel Estimation for Robust Positioning,” Proc. IEEE Fourty-Seventh Asilomar Conference on Signals, Systems and Computers, (Asilomar 2013), November 3-6, 2013.
IEEE Asilomar CSSC – Monterey, USA – Jani Saloranta, Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Algebraic Confidence in Positioning Problems,” Proc. IEEE Fourty-Seventh Asilomar Conference on Signals, Systems and Computers, (Asilomar 2013), November 3-6, 2013.
IEEE Asilomar CSSC – Monterey, USA – Gianni Pasolini, Davide Dardari and Giuseppe Thadeu Freitas de Abreu: “The Effect of Channel Spatial Correlation on Physical Layer Security in Multi-antenna Scenarios,” Proc. IEEE Fourty-Seventh Asilomar Conference on Signals, Systems and Computers, (Asilomar 2013), November 3-6, 2013.
IEEE Asilomar CSSC – Monterey, USA – Satyanarayana Vuppala and Giuseppe Thadeu Freitas de Abreu: “Secrecy Transmission Capacity of Random Networks,” Proc. IEEE Fourty-Seventh Asilomar Conference on Signals, Systems and Computers, (Asilomar 2013), November 3-6, 2013.
IEEE PIMRC – London, UK – Satyanarayana Vuppala and Giuseppe Thadeu Freitas de Abreu: “Secrecy Outage in Random Wireless Networks subjected to Fading,” in Proc. IEEE Personal Indoor Mobile Radio Communications (PIMRC 2013), September 8-11 2013.
IEEE WPNC – Dresden, Germany – Omotayo Oshiga, Stefano Severi, Giuseppe Thadeu Freitas de Abreu: “Non-parametric Estimation of Error Bounds in LOS and NLOS Environments,” Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2013), March 20-21, 2013.
IEEE SPAWC – Darmstadt, Germany – Jhanak Parajuli and Giuseppe Thadeu Freitas de Abreu, “Interference Alignment with Hybrid Optimization and Receiver Cooperation,” Proc. IEEE International Workshop on Signal Processing Advances in Communications, (SPAWC 2013), June 16-19, 2013.
IEEE ICC – Budapest, Hungary – Satyanarayana Vuppala and Giuseppe Thadeu Freitas de Abreu, “Analysis of Secure Unicast Links in Stochastic Wireless Networks,” Proc. IEEE International Conference on Communications – Ad-hoc and Sensor Networking Symposium, (ICC 2013), June 9-13, 2013.

2012

IEEE Transactions on Communications – Giuseppe Thadeu Freitas de Abreu: “Very Simple Tight Bounds on the Q-function,” IEEE Transactions on Communications, vol. 60, no. 9, 2415 – 2420, September 2012.
IEEE Vehicular Technology Magazine – Gabriel Porto Villardi, Giuseppe Thadeu Freitas de Abreu and Hiroshi Harada: “TV White Space Technology: Interference in Portable Cognitive Emergency Networks” IEEE Vehicular Technology Magazine – Special Issue on Applications of Cognitive Radio Networks , Vol.7, No.2, pp. 47 – 53, Jun. 2012.
IEEE Transactions on Signal Processing – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Adaptive Gating for Multitarget Tracking with Gaussian Mixture Filters,” IEEE Transactions on Signal Processing, vol. 60, no. 3, 1533 – 1538, March 2012
IEEE Transactions on Communications – Golaleh Rahmatollahi and Giuseppe Thadeu Freitas de Abreu: “Closed-Form Hop-Count Distributions in Random Networks with Arbitrary Routing,” IEEE Transactions on Communications, vol. 60, no. 2, 429 – 444, February 2012
IEEE Transactions on Communications – Wensheng Zhang, Giuseppe Thadeu Freitas de Abreu, Mamiko Inamori and Yukitoshi Sanada: “Spectrum Sensing Algorithms via Finite Random Matrices,” IEEE Transactions on Communications, vol. 60, no. 1, 164 – 175, January
International Journal of Wireless Information Networks – Davide Macagnano, Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “A Comprehensive Tutorial on Localization: Algorithms and Performance Analysis Tools” Springer Intl. Journal of Wireless Inform. Networks – Special Issue for the IEEE Personal Indoor Mobile Radio Communications Conference 2011, July 2012.
IEEE Asilomar CSSC – Monterey, USA – Best Paper – Comm. Syst. Track – Satyanarayana Vuppala and Giuseppe Thadeu Freitas de Abreu: “Unicasting on the S-Graph,” Proc. IEEE FourtySixth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2012), November 4-7, 2012.
IEEE Asilomar CSSC – Monterey, USA – Jani Saloranta, Stefano Severi, Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Sensor Localization with Algebraic Confidence,” Proc. IEEE Fourty-Sixth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2012), November 4-7, 2012.
IEEE WPNC – Dresden, Germany – Simona Poilinca, Stefano Severi, Giuseppe Thadeu Freitas de Abreu and Davide Macagnano: “Improved localization of Ultra-Wideband devices using Kalman Filter on super MDS estimated positions,” Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2012), March 15-16, 2012.
IEEE WPNC – Dresden, Germany – Best Paper Award – Jani Saloranta, Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Interval-Scaling for Multitarget Localization,” Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2012), March 15-16, 2012.
IEEE IWSSIP – Vienna, Austria – Stefano Severi, Giuseppe Thadeu Freitas de Abreu and Davide Dardari: “Distributed Localization: Multihop Versus Message-Passing,” Proc. IEEE International Workshop on Systems, Signals and Image Processing (IWSSIP 2012), 11 – 13 April, 2012.

2011

Book Ch. 4 InTech Publishers – Communications and Networking – Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu “Novel Mechanisms for Location-Tracking Systems,” in Ultra Wideband Communications: Novel Trends, InTech Publishers, Aug. 2011, ISBN 978-953-307-324-8.
IEEE Transactions on Signal Processing – Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “On the Maximum Likelihood Approach for Source and Network Localization,” IEEE Transactions on Signal Processing, vol. 59, no. 10, pp. 4954 – 4970, Oct. 2011.
IEEE Asilomar CSSC – Monterey, USA – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Super MDS with Heterogeneous Information,” Proc. IEEE Fourty-Fifth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2011), November 6-9, 2011.
IEEE Asilomar CSSC – Monterey, USA – Golaleh Rahmatollahi, Giuseppe Thadeu Freitas de Abreu and Stefano Severi: “Cooperative Multihop Localization with Privacy,” Proc. IEEE Fourty-Fifth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2011), November 6-9, 2011.
IEEE Asilomar CSSC – Monterey, USA – Giuseppe Thadeu Freitas de Abreu and Wensheng Zhang: “Extreme 1value Distributions of Finite Random Wishart Matrices with Application to Spectrum Sensing,” Proc. IEEE Fourty-Fifth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2011), November 6-9, 2011.
IEEE CTW – Sitges, Spain – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “On the Spectrum of Perturbed Gramian Matrices,” Proc. IEEE Communication Theory Workshop (CTW 2011), June 20-22, 2011.
IEEE CTW – Sitges, Spain – Wensheg Zhang, Giuseppe Thadeu Freitas de Abreu, Mamiko Inamori and Yukitoshi Sanada: “On the Exact Distributions of Extreme Eigenvalues of Finite Random Wishart Matrix,” Proc. IEEE Communication Theory Workshop (CTW 2011), June 20-22, 2011.
PIEEE CTW – Sitges, Spain – Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Analysis of the Maximum-Likelihood Performance in the Mobile Positioning Problem,” Proc. IEEE Communication Theory Workshop (CTW 2011), June 20-22, 2011.
IEEE CTW – Sitges, Spain – Stefano Severi, Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Distributed Multihop Localization: An Energy-Efficient Approach,” Proc. IEEE Communication Theory Workshop (CTW 2011), June 20-22, 2011.
IEEE ICUWB – Bologna, Italy – Davide Macagnano, Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Hybrid Initialization for Nonconvex Network Localization Problems,” Proc. IEEE International Conference on Ultra-Wideband (ICUWB 2011), September 14-16, 2011.
IEEE WPNC – Dresden, Germany – Jani Saloranta and Giuseppe Thadeu Freitas de Abreu: “Solving the fast moving vehicle localization problem via TDOA algorithms,” Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2011), March 7-8, 2011.
IEEE WPNC – Dresden, Germany – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Multitarget Tracking with the Cubature Kalman CPHD Filter,” Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2011), March 7-8, 2011.
IEEE WPNC – Dresden, Germany – Stefano Severi, Giuseppe Thadeu Freitas de Abreu and Davide Dardari: “Multihop versus Message-Passing: a Complexity and Accuracy Comparison for Distributed Localization,” Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2011), March 7-8, 2011.
IEEE CROWNCOM – Yokohama, Japan – Gabriel Porto Villardi, Giuseppe Thadeu Freitas de Abreu and Hiroshi Harada, “Stochastic-Geometric Model of Expected Service Area for Cognitive TV White Space Wireless Networks,” Proc. IEEE Conference on Cognitive Radio Oriented Wireless Networks, (CROWNCOM 2011), 31 May – 3 June, 2011.
IEEE ICC – Kyoto, Japan – Giuseppe Thadeu Freitas de Abreu, Wensheng Zhang and Yukitoshi Sanada, “Spectrum Sensing Algorithms via Finite Random Matrix Theory,” Proc. IEEE International Conference on Communications – Cognitive Radio and Networks Symposium, (ICC 2011), June 5-9, 2011.
White Pp. 2 Seventh Framework Programme – Ana Maria Sierra Diaz, Andrey Somov, Antti Anttonen, Axel Schmidt, Davide Dardari, Dejan Rakic, Emil Dimitrov, Giuseppe Thadeu Freitas de Abreu, Giuseppe Destino, Hartmut Dunger, Hrjehor Mark, Isabelle Bucaille, Jordi Sabater, Kai Dombrowski, Manuel Pezzin, Markus Wehner, Pejman Hafezi, Peter Jung, Peter Trapps, Rahim Biswas, Rudolf Zetik, Sergio Bovelli, Sithamparanathan Kandeepan, Srdjan Tadic, Stefan Gaier, Sven Zeisberg, Ute Pfeiffer:“ Ultra-Widebad: Past, Present and Future.”

2010

Book Ch. 3 Intech Publishers – Communications and Networking – Giuseppe Thadeu Freitas de Abreu, Giuseppe Destino and Davide Macagnano “Data-Processing and Optimization Methods for Localization-Tracking Systems,” in Communications and Networking, Intech Publishers, Sep. 2010, ISBN 978-953-307-114-5
IEEE Transactions on Signal Processing – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Gershgorin Analysis of Random Gramian Matrices with Application to MDS Tracking,” IEEE Transactions on Signal Processing, vol. 59, no. 4, pp. 1785 – 1800, April 2010.
IEEE Transactions on Communications – Giuseppe Thadeu Freitas de Abreu: “On the Moment-Determinance and Random Mixture of Nakagami-m Variates,” IEEE Transactions on Communications, vol. 58, no. 9, pp. 2561 – 2575, September 2010.
IEEE Transactions on Consumer Electronics – Gabriel Porto Villardi, Giuseppe Thadeu Freitas de Abreu, Hiroshi Harada and Ryuji Kohno: “STBCs with Orthogonal Decoder for Highly Time-Selective Channels” IEEE Transactions on Consumer Elec., vol. 56, no.2, pp. 380 – 387, May 2010.
Symposium of IEICE Societies (Fall) – Tokyo, Japan – Wensheng Zhang, Mamiko Inamori, Yukitoshi Sanada and Giuseppe Thadeu Freitas de Abreu: “Blind Spectrum Sensing Based on the Demmel Condition Number of Complex Wishart Matrices,” Symposium of the IEICE Society on Fundamentals of Electronics, Communications and Computer Science, Tokyo, Japan, September 14-17, 2010.
IEEE Asilomar CSSC – Monterey, USA – Giuseppe Thadeu Freitas de Abreu, Wensheng Zhang and Yukitoshi Sanada, “Finite Random Matrices for Blind Spectrum Sensing,” Proc. IEEE Fourty-Fourth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2010), November 7-10, 2010.
IEEE Asilomar CSSC – Monterey, USA – Golaleh Rahmatollahi and Giuseppe Thadeu Freitas de Abreu: “Routing Policy-Dependent Hop-Count Distribution in Wireless Ad Hoc Networks,” Proc. IEEE Fourty-Fourth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2010), November 7-10, 2010.
IEEE Asilomar CSSC – Monterey, USA – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Multitarget Tracking with the Cubature Kalman Probability Hypothesis Density Filter,” Proc. IEEE Fourty-Fourth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2010), November 7-10, 2010.
IEEE Asilomar CSSC – Monterey, USA – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Statistical Spectral Analysis of Random Gramian Matrices,” Proc. IEEE Fourty-Fourth Asilomar Conference on Signals, Systems and Computers, (Asilomar 2010), November 7-10, 2010.
IEEE Chinacom – Beijing, China – Qiang Xue and Giuseppe Thadeu Freitas de Abreu: “Mutual Information of Amplify-and-Forward Relaying with Partial Relay Selection,” Proc. IEEE 5th International ICST Conference on Communications and Networking in China, (Chinacom 2010), August 25-27, 2010.
IEEE SPAWC – Marrakech, Morocco – Qiang Xue and Giuseppe Thadeu Freitas de Abreu: “Optimization of Mutual Information of Amplify-and-Forward DSTBCs over the Random Set Relay Channel,” Proc. IEEE Signal Processing Advances in Wireless Communications, (SPAWC 2010), June 20-23, 2010.
IEEE WPNC – Dresden, Germany – Golaleh Rahmatollahi and Giuseppe Thadeu Freitas de Abreu: “Policy-dependent Multi-hop Distances in Linear Ad Hoc Networks,” Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2010), March 11, 2010.
IEEE WPNC – Dresden, Germany – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Gershgorin Discs of Gramian Matrices for Target Tracking,” Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2010), March 11, 2010.
IEEE WPNC – Dresden, Germany – Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Improving Source Localization in NLOS Conditions via Ranging Contraction,” Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2010), March 11, 2010.
IEEE WPNC – Dresden, Germany – Stefano Severi, Giuseppe Thadeu Freitas de Abreu and Davide Dardari: “A Quantitative Comparison of Multihop Localization Algorithms,” Proc. IEEE Workshop on Positioning Navigation and Communication, (WPNC 2010), March 11, 2010.
White Pp. 1 eMobility Technology Platform – Behnaam Aazhang, Giuseppe Thadeu Freitas de Abreu, Ulrico Celentano, Marian Codreanu, Sudhir Dixit, Markku Juntti, Matti Latva-aho, Wei Li, Anna Pantelidou, Rahim Tafazolli: “Broadband Mobile Systems,” in eMobility Technology Platform – Expert Working Group EWG6 (White Paper) http://www.emobility.eu.org/SRA/Documents/eMOB_Broadband_WHITE_PAPER.pdf

2009

IEEE Transactions on Communications – Giuseppe Thadeu Freitas de Abreu: “Jensen-cotes upper and lower bounds on the gaussian Q-function and related functions,” IEEE Transactions on Communications, vol. 57, no. 11, pp. 3328 – 3338, September, 2009.
IEEE Transactions on Wireless Communications – Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Weighing Strategy for Network Localization under Scarce Ranging Information,” IEEE Transactions on Wireless Communications, vol. 8, no. 7, pp. 3668 – 3678, June 2009.
IEEE Transactions on Wireless Communications – Behrouz Maham, Are Hjørungnes and Giuseppe Thadeu Freitas de Abreu: “Distributed GABBA Space-Time Codes in Amplify-and-Forward Relay Networks,” IEEE Transactions on Wireless Communications, vol. 8, no. 4, pp. 2036 – 2045, April 2009.
IEEE Asilomar CSSC – Monterey, USA – Giuseppe Thadeu Freitas de Abreu: “Super-tight Algebraic Bounds on Q(x),” Proc. IEEE Fourty-Third Asilomar Conference on Signals, Systems and Computers, (Asilomar 2009), November 1-4, 2009.
IEEE Asilomar CSSC – Monterey, USA – Best Paper – Signal Proc. Track – Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Reformulating the Least-Square Source Localization Problem with Contracted Distances,” Proc. IEEE Fourty-Third Asilomar Conference on Signals, Systems and Computers, (Asilomar 2009), November 1-4, 2009.
IEEE Asilomar CSSC – Monterey, USA – Stefano Severi, Giuseppe Thadeu Freitas de Abreu, Giuseppe Destino and Davide Dardari: “Efficient and Accurate Localization in Multihop Networks,” Proc. IEEE Fourty-Third Asilomar Conference on Signals, Systems and Computers, (Asilomar 2009), November 1-4, 2009.
IEEE Globecom – Honolulu, USA – Pedro Nardelli and Giuseppe Thadeu Freitas de Abreu: “On Hopping Strategies for Autonomous Wireless Networks,” Proc. IEEE Global Conference on Telecommunications (Globecom 2009), 30 November 30th – 4 December, 2009.
IEEE Globecom – Honolulu, USA – Stefano Severi, Giuseppe Thadeu Freitas de Abreu, Giuseppe Destino and Davide Dardari: “Understanding and Solving Flip-Ambiguity in Network Localization via Semidefinite Programming,” Proc. IEEE Global Conference on Telecommunications (Globecom 2009), 30 November 30th – 4 December, 2009.
IEEE PIMRC – Tokyo, Japan – Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Advanced Location-Tracking Systems in Home, Automotive and Public Transportation Environments,” in Proc. IEEE Personal Indoor Mobile Radio Communications (PIMRC 2009), September 13-16, 2009.
IEEE PIMRC – Tokyo, Japan – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Weighting Strategy for MDS Tracking in LoS Conditions,” in Proc. IEEE Personal Indoor Mobile Radio Communications (PIMRC 2009), September 13-16, 2009.
IEEE ICC – Dresden, Germany – Giuseppe Thadeu Freitas de Abreu: “Arbitrarily Tight Bounds on the Gaussian Q-function and Related Functions,” Proc. IEEE International Conference on Communications – Communication Theory Symposium (ICC 2009), June 14-18, 2009.
IEEE ICC – Dresden, Germany – Pedro Nardelli, Giuseppe Thadeu Freitas de Abreu and Paulo Cardieri: “Multi-Hop Aggregate Information Efficiency in Wireless Ad Hoc Networks,” Proc. IEEE International Conference on Communications – Communication Theory Symposium, June 14-18, 2009.
IEEE ICC – Dresden, Germany – Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Solving the Source Localization Problem via Global Distance Continuation,” Proc. IEEE International Conference on Communications – Workshop on Synergies in Communications and Localization (ICC 2009), June 14-18, 2009.
IEEE ITW – Volos, Greece – Qiang Xue, Giuseppe Thadeu Freitas de Abreu and Behnaam Aazhang: “Mutual Information of AF-DSTBCs over the Random Set Relay Channel,” Proc. IEEE Information Theory Workshop (ITW 2009) June 10-12, 2009.
IEEE ITW – Volos, Greece – Carlos Lima and Giuseppe Thadeu Freitas de Abreu: “Analysis of Contention-based Relay Selection Mechanisms in Autonomous Multi-hop Networks,” Proc. IEEE Information Theory Workshop (ITW 2009) June 10-12, 2009.
IEEE WCNC – Budapest, Hungary – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Improved MDS-based Muti-target Tracking Algorithm” Proc. IEEE Wireless Communications and Networking Conference (WCNC 2009), Budapest, Hungary, April 5-8, 2009.
IEEE WPNC – Hannover, Germany – Golaleh Rahmatollahi, Maria Guirao, Pedro Nardelli and Giuseppe Thadeu Freitas de Abreu: “Aggregate Information Efficiency in IR-UWB Ad-Hoc Single-Hop WSNs,” Proc. IEEE Workshop on Positioning, Navigation and Communication (WPNC 2009), March 19, 2009.
IEEE WPNC – Hannover, Germany – Pedro H. J.Nardelli and Giuseppe Thadeu Freitas de Abreu: “Analysis of hopping strategies in multi-hop wireless networks,” Proc. IEEE Workshop on Positioning, Navigation and Communication (WPNC 2009), March 19, 2009.
IEEE WPNC – Hannover, Germany – Carlos H. M. Lima and Giuseppe Thadeu Freitas de Abreu: “Contention-based Geographic Forwarding strategies for position-centric routing,” Proc. IEEE Workshop on Positioning, Navigation and Communication (WPNC 2009), March 19, 2009.
IEEE WPNC – Hannover, Germany – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “A wavelet pre-filter scheme for MDS tracking,” Proc. IEEE Workshop on Positioning, Navigation and Communication (WPNC 2009), March 19, 2009.

2008

Book Ch. 2 River Publishers – 4G Mobile & Wireless Communications Technologies – Davide Macagnano, Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Metric Multidimensional Scaling for Localization and Tracking,” in 4G Mobile & Wireless Communications Technologies, Sofoklis A. Kyriazakos, George T. Karetsos and John Soldatos (Editors), River Publishers, pp. 285-295, 2008
IEEE Transactions on Vehicular Technologies – Gabriel Porto Villardi, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Modified Orthogonal Space-Time Block Codes for Time-Selective Fading Channels” IEEE Transactions on Vehicular Technologies, vol. 57, no. 6, pp. 3921-3927, November 2008.
IEICE Transactions on Communications – Gabriel Porto Villardi, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno, “Cumulative Decision Feedback Technique for Energy Constrained Wireless Sensor Networks”, IEICE Trans. on Communications – Special Issue on Emerging Technologies for Practical Ubiquitous and Sensor Nets., Vol.E91-B, No.10, pp. 3768 – 3774, Oct. 2008.
IEEE Transactions on Communications – Giuseppe Thadeu Freitas de Abreu: “On the Generation of Tikhonov Random Variates,” IEEE Transactions on Communications, vol. 56, no. 7, pp. 1157-1168, July 2008.
SITA – Kinugawa, Japan – Giuseppe Thadeu Freitas de Abreu: “Tight Upper and Lower Bounds on the Gaussian Q-function,” 31st Symposium on Information Theory and Applications (SITA 2008), October 7-10, 2008.
SITA – Kinugawa, Japan – Gabriel Porto Villardi, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Performance of STBCs with Linear Maximum Likelihood Decoder in Time-selective Channels,” 31st Symposium on Information Theory and Applications (SITA 2008), October 7-10, 2008.
IEEE ICCS – Guangzhou, China – Gabriel Porto Villardi, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Performance of STBCs with Linear Maximum Likelihood Decoder in Time-selective Channels,” in IEEE International Conference on Communications Systems (ICCS 2008), November 19-21, 2008.
IEEE Asilomar CSSC – Pacific Grove, U.S.A. – Qiang Xue, Giuseppe Thadeu Freitas de Abreu and Behnaam Aazhang: “Analysis of Amplify-and-Forward DSTBCs over the Random Set Relay Channel,” Proc. IEEE Fourty-Second Asilomar Conference on Signals, Systems and Computers (Asilomar 2008), October 28-31, 2008.
IEEE ICUWB – Hannover, Germany – Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Optimized Confidence Weights for Localization Algorithms with Scarce Information,” in Proc. IEEE International Conference on Ultra-Wideband (ICUWB 2008), September 10-12, 2008.
IEEE SAM – Darmstadt, Germany – Behrouz Maham, Are Hjørungnes and Giuseppe Thadeu Freitas de Abreu: “Distributed GABBA Space-Time Codes with Complex Signal Constellations,” in Proc. IEEE Fifth Sensor Array and Multichannel Signal Processing Workshop (SAM 2008), July 21-23, 2008.
IEEE WCNC – Las Vegas, U.S.A. – Carlos Lima and Giuseppe Thadeu Freitas de Abreu: “Clusterization for Robust Geographic Routing in Wireless Sensor Networks,” in Proc. IEEE Wireless Communications and Networking Conference – Network Track (WCNC 2008), March 31 – April 3, 2008, pp.2385 – 2390.
WPMC – Saariselkä, Finland – Davide Macagnano, Jani Saloranta and Giuseppe Thadeu Freitas de Abreu: “Tracking Multiple Targets under Fault-Detection Conditions with Multidimensional Scaling,” in Proc. Wireless Personal Multimedia Communications (WPMC 2008), September 8-11, 2008.
WPMC – Saariselkä, Finland – Giuseppe Destino, Jani Saloranta and Giuseppe Thadeu Freitas de Abreu: “Sensor Localization in Realistic Environments using Ultra-Wideband Radios,” in Proc. Wireless Personal Multimedia Communications (WPMC 2008), September 8-11, 2008.
WPMC – Saariselkä, Finland – Carlos Lima and Giuseppe Thadeu Freitas de Abreu: “Auction-based Relay Selection Algorithm for Positioncentric Routing,” in Proc. Wireless Personal Multimedia Communications (WPMC 2008), September 8-11, 2008.
ICT Mobile Summit – Stockholm, Sweden – Subayal Khan, Carlos Lima and Giuseppe Thadeu Freitas de Abreu: “Event Driven Simulation Framework for Large Scale Sensor Networks: Discovery, Relaying, Localization and Tracking,” in Proc. 17th ICT Mobile & Wireless Communications Summit (ICT-Summit 2008), June 10-12, 2008.
IEEE WPNC – Hannover, Germany – Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Network Boundary Recognition via Graph Theory,” in Proc. IEEE 5th Workshop on Positioning, Navigation and Communication (WPNC 2008), March 27, 2008.
IEEE WPNC – Hannover, Germany – Carlos Lima and Giuseppe Thadeu Freitas de Abreu: “Game-Theoretical Relay Selection Strategy for Geographic Routing in Multi-hop WSNs,” in Proc. IEEE 5th Workshop on Positioning, Navigation and Communication (WPNC 2008), March 27, 2008.
IEEE WPNC – Hannover, Germany – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Tracking Multiple Dynamic Targets in LOS/NLOS Conditions with Multidimensional Scaling,” in Proc. IEEE 5th Workshop on Positioning, Navigation and Communication (WPNC 2008), March 27, 2008.

2007

WPMC – Jaipur, India – Gabriel Porto Villardi, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Cumulative Decision Feedback Techniques for Energy Constrained Wireless Sensor Networks,” in Proc. Wireless Personal Multimedia Communications (WPMC 2007), December 3-6, 2007.
IEEE Asilomar CSSC – Pacific Grove, U.S.A. – Giuseppe Destino, Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Hypothesis Testing and Iterative WLS Minimization for WSN Localization under LOS/NLOS Condition,” in Proc. IEEE Forty-first Asilomar Conference on Signals, Systems and Computers (Asilomar 2007), November 4-7, 2007.
IEEE PIMRC – Athens, Greece – Giuseppe Thadeu Freitas de Abreu: “BER and Mutual Information of STBCs over Fading Channels with PSK-QAM Modulations,” in Proc. IEEE Personal Indoor Mobile Radio Communications (PIMRC 2007), September 3-7, 2007.
IEEE PIMRC – Athens, Greece – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Tracking Multiple Dynamic Targets with Multidimensional Scaling,” in Proc. IEEE Personal Indoor Mobile Radio Communications (PIMRC 2007), September 3-7, 2007.
IST Mobile Summit – Budapest, Hungary – Giuseppe Destino, Davide Macagnano, Giuseppe Thadeu Freitas de Abreu, Benôït Denis and Laurent Ouvry : “Localization and Tracking for LDR-UWB Systems,” in Proc. 16th IST Mobile & Wireless Communications Summit (IST-Summit 2007), July 1-5, 2007.
IEEE ICC – Glasgow, Scottland – Giuseppe Thadeu Freitas de Abreu: “On the Simulation of Tikhonov Random Processes,” in Proc. IEEE International Conference on Communications – Wireless Communications Symposium (ICC 2007), June 24-27, 2007.
IEEE WPNC – Hannover, Germany – Giuseppe Destino, Davide Macagnano, Giuseppe Thadeu Freitas de Abreu: “A Clusterized WLS Localization Algorithm for Large Scale WSNs,” in Proc. IEEE 4th Workshop on Positioning, Navigation and Communication (WPNC 2007), March 22, 2007.
IEEE WPNC – Hannover, Germany – Davide Macagnano, Giuseppe Destino, Flavio Esposito and Giuseppe Thadeu Freitas de Abreu: “MAC Performances for Localization and Tracking in Wireless Sensor Networks,” in Proc. IEEE 4th Workshop on Positioning, Navigation and Communication (WPNC 2007), March 22, 2007.
IEEE WCNC – Hong-Kong, China – Giuseppe Thadeu Freitas de Abreu and Giuseppe Destino: “Super MDS – Source Location from Distance and Angle Information,” in Proc. IEEE Wireless Communications and Networking Conference – Network Track (WCNC 2007), March 11-15, 2007.

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2006

Book Ch. 1 John Wiley – Ultra-Wideband Wireless Communications and Networks – Kegen Yu, Harri Saarnisaari, Jean-Philippe Montillet, Alberto Rabbachin, Ian Oppermann and Giuseppe Thadeu Freitas de Abreu: “Localization,” in Ultra-Wideband Wireless Communications and Networks, Xuemin Shen, Mohsen Guizani, Robert C. Qiu and Tho Le-Ngoc (Editors), pp.279 – 296, John Wiley, Feb. 2006
IEICE Trans. on Fundamentals of Elec., Commun. and Computer Sci. – Gabriel Porto Villardi, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “An Adaptive Frame-based Interpolation Method of Channel Estimation for Space-Time Block Codes in Moderate Fading Channels,” IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences – Special Issue on Multidimensional Signal Processing and its Applications, vol.E89-A, No.3, pp.660-669, March 2006.
IEEE Globecom-CmTh – San Francisco, U.S.A. – Giuseppe Thadeu Freitas de Abreu: “Accurate Simulation of Piecewise Continuous Arbitrary Nakagami-m Phasor Processes,” Proc. IEEE Global Conference on Telecommunications – Symposium on Communications Theory (Globecom – CmTh 2006), November 27 – December 1, 2006.
IEEE Globecom-WASNet – San Francisco, U.S.A. – Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “Sensor Localization from WLS Optimization with Closed-form Gradient and Hessian,” Proc. IEEE Global Conference on Telecommunications – Symposium on Wireles Ad Hoc and Sensor Networks towards Anytime Anywhere Internetworking (Globecom – WASNet 2006), November 27 – December 1, 2006.
IEEE PIMRC – Helsinki, Finland – Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Localization from Imperfect and Incomplete Ranging,” Proc. IEEE Personal Indoor Mobile Radio Communications (PIMRC 2002), November 15-18, 2006.
WPMC – San Diego, USA. – Davide Macagnano and Giuseppe Thadeu Freitas de Abreu: “Tracking Multiple Targets with Multidimensional Scaling,” Wireless Personal Multimedia Communications (WPMC 2006), September 17-20, 2006.
IST Summit – Mykonos, Greece – Giuseppe Destino and Giuseppe Thadeu Freitas de Abreu: “MDS-WLS Optimization for Sensors Localization,” 15th IST Mobile & Wireless Communications Summit (IST-Summit 2006), June 4-8, 2006.

2005

IEEE Transactions on Signal Processing – Giuseppe Thadeu Freitas de Abreu: “Closed-form Correlation Functions of Generalized Hermite Wavelets,” IEEE Transactions on Signal Processing, vol. 53, No. 6, pp. 2258 – 2261, June 2005.
EURASIP Journal on Applied Signal Processing – Giuseppe Thadeu Freitas de Abreu, Craig John Mitchell and Ryuji Kohno: “Jitter-Robust Orthogonal Hermite Pulses for Ultra Wideband Impulse Radio Communications,” EURASIP Journal on Applied Signal Processing – Special Issue on Ultra-Wideband State of the Art, No.3, pp. 369-381, March, 2005.
IEICE Trans. on Fundamentals of Elec., Commun. and Computer Sci. – Craig John Mitchell, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Adaptive RAKE Receivers with Subspace-based Hadamard-Hermite Template Design for UWB Communications,” IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences – Special Issue on Ultra Wideband Systems, vol.E88-A, No.9, pp.2327-2338, September 2005.
SITA – Tancha-Bay, Japan – Gabriel Porto Villardi, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Performance of Modified Orthogonal Space-Time Block Codes in Nakagami Fading Channels,” 28th Symposium on Information Theory and Applications (SITA 2005), pp.555-558, November 20-23, 2005.
IEEE Asilomar CSSC – Pacific Grove, U.S.A. – Giuseppe Thadeu Freitas de Abreu: “GABBA Codes: Generalized Full-Rate Orthogonally Decodable Space-Time Block Codes,” Proc. IEEE Thirty-ninth Asilomar Conference on Signals, Systems and Computers (Asilomar 2005), October 30 – November 2, 2005.
IEEE Asilomar CSSC – Pacific Grove, U.S.A. – Gabriel Porto Villardi, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: ‘Modified Orthogonal Space-Time Block Codes for Time-Selective Fading Channels,” Proc. IEEE Thirty-ninth Asilomar Conference on Signals, Systems and Computers (Asilomar 2005), October 30 – November 2, 2005.
IEEE ICU – Zurich, Switzerland – Giuseppe Thadeu Freitas de Abreu: “Performance of Parameter Estimation from UWB-IR Signals with an Array of Orthonormal Correlators,” Proc. IEEE International Conference on Ultra-Wideband Telecommunications (ICU 2005), September 5-8, 2005.
WPMC – Aalborg, Denmark. – Giuseppe Thadeu Freitas de Abreu: “Orthogonally Decoded Full-rate Linear STBCs for Arbitrary Modulation and any Number of Antennas,” Wireless Personal Multimedia Communications (WPMC 2005), September 17-22, 2005.
WPMC – Aalborg, Denmark. – Gabriel Porto Villardi, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “An Adaptive Frame-based Interpolation Method of Channel Estimation for Space-Time Block Codes in Moderate Fading Channels,” Wireless Personal Multimedia Communications (WPMC 2005), September 17-22, 2005.
IST Summit – Dresden, Germany – Alberto Rabbachin, Jean-Philippe Montillet, Paul Cheong, Giuseppe Thadeu Freitas de Abreu and Ian Opperman: “Non-Coherent Energy Collection Approach for TOA Estimation in UWB Systems,” 14th IST Mobile & Wireless Communications Summit (IST-MWCS 2005), June 19-23, 2005.
IEEE VTC Spring – Stockholm, Sweden – Jean-Philippe Montillet, Giuseppe Thadeu Freitas de Abreu, Harri Sarnisari and Ian Opperman: “Comparison of UWB and WCDMA Positioning Accuracies,” 1EEE 61st Semiannual Vehicular Technology Conference (VTC-Spring 2005), May 30 to June 1, 2005.

2004

Sony Co., Japan – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno “A Method to Design Low Sidelobe, Beam-width-Adjustable Array Patterns and Applications,” US Patent no. 6784835-B2, August 2004.
IEE Proceedings on Communications – Giuseppe Thadeu Freitas de Abreu, Hideki Ochiai and Ryuji Kohno: “Linear Maximum Likelihood Decoding of Space-Time Block Coded OFDM Systems for Mobile Communications,” IEE Proc. on Communications – Special Issue on Wireless LAN Systems and Internetworking, vol. 151, No. 5, pp. 447-459, October 2004.
Symposium of IEICE Societies (Spring) – Tokyo, Japan – Takashi Uefuji, Tadatomo Sato, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “A Study on DoA Estimation Using Array Antenna and Orthogonal Hermite Wavelets for UWB Communications,” Symposium of the IEICE Society on Fundamentals of Electronics, Communications and Computer Science, vol. 103, no. 715, pp. 203-208, Tokyo, Japan, March 15-17, 2004 (in Japanese).
General Symposium of the IEICE (Spring) – Tokyo, Japan – Tadatomo Sato, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Uniform Circular Array Antenna Beamforming Algorithm for UWB Signals,” General Symposium of the IEICE, pp. A-5-42, March 22-25, 2004 (in Japanese).
SITA – Gero, Japan – Gabriel Porto Villardi, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “A Lagrangean Method of Channel Estimation for Space-Time Block Codes in Moderate Fading Channels,” 27th Symposium on Information Theory and Applications (SITA 2004), pp. 335-338, December 14-17, 2004.
SITA – Gero, Japan – Takashi Uefuji, Tadatomo Sato, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “A Study on DoA Estimation with Modified Hermite Pulses in UWB Communications,” 27th Symposium on Information Theory and Applications (SITA 2004), pp. 535-538, December 14-17, 2004 (in Japanese).
WPMC – Abano Terme, Italy. – Giuseppe Thadeu Freitas de Abreu, Takashi Uefuji and Ryuji Kohno: “Parameter Estimation of UWB-IR Signals Using Array Antennas with Hermite-Hadamard Orthogonal Filters,” Wireless Personal Multimedia Communications (WPMC 2004), vol.2, pp. 288-292, September 12-15, 2004.
WPMC – Abano Terme, Italy. – Craig John Mitchell, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “UWB RAKE Receiver Design based on Orthogonal Hermite Hadamard Pulses,” Wireless Personal Multimedia Communications (WPMC 2004), September 12-15, 2004.
IEEE ISSSTA – Sydney, Australia – Alex Cartagena Gordillo, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Band-Limited Frequency Efficient Orthogonal Pulse-Shape Modulation for UWB Communications,” International Symposium on Spread Spectrum Techniques and Applications (ISSSTA 2004), August 30 – September 2, 2004.

2001 – 2004

IEEE Transactions on Antennas and Propagations – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “A Modified Dolph-Chebyshev Approach for the Synthesis of Low Sidelobe Beampatterns with Adjustable Beamwidth,” IEEE Transactions of Antennas and Propagations, vol. 51, Issue 10, pp. 3014 -3017, October 2003.
KICS Journal on Communications and Networks – Giuseppe Thadeu Freitas de Abreu, Craig John Mitchell and Ryuji Kohno: “On the Design of Orthogonal PulseShape Modulation for UWB Systems Using Hermite Pulses,” KICS Journal on Communications and Network – Special Issue on Ultra-Wideband Communications, vol. 5, no. 4, pp. 328-343, December 2003.
IEICE Trans. on Fundamentals of Elec., Commun. and Computer Sci. – Tadatomo Sato, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Beamforming Array Antenna with Heterogeneous Signal Distribution,” IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences – Special Issue on Wideband Systems, vol. J86-A, no. 12, pp.1302-1309, December, 2003.
IEICE Trans. on Fundamentals of Elec., Commun. and Computer Sci. – Koji Ishii, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Beam-Space Time Coding Exploiting Overlap Among Beampatterns,” IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences – Special Issue on Information Theory and Its Applications, vol. E86-A, no. 10, pp.2501-2509, Oct. 2003.
International Journal of Wireless Information Networks – Craig John Mitchell, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Combined Pulse Shape and Pulse Position Modulation for High Data Rate Transmissions in Ultra-Wideband Communications” Intl. Journal of Wireless Inform. Networks – Special Issue on Ultra-Wideband Systems, vol. 10, no. 4, pp. 167-178, Oct. 2003.
SITA – Awajishima, Japan – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Jitter-Robust Hermite Pulses for UWB Communications,” 26th Symposium on Information Theory and Applications (SITA 2002), pp. 393-398, December 15-18, 2003.
SITA – Awajishima, Japan – Tadatomo Sato, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Chebyshev-like Low Sidelobe Beamforming for Ultra-Wideband Communications,” 26th Symposium on Information Theory and Applications (SITA 2002), pp. 707-710, December 15-18, 2003 (in Japanese).
IEEE Globecom – San Francisco, U.S.A. – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Design of Jitter-Robust Orthogonal Pulses for UWB Systems,” Proc. IEEE Global Conference on Telecommunications – Symposium on Wireless Communications (Globecom 2003), December 1-5, 2003.
Symposium of IEICE – Tokyo, Japan – Tadatomo Sato, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “A Study on the Application of DolphChebyshev Pattern Synthesis to Ultra-Wideband Signals,” 25th Symposium of the IEICE Society on Communications pp. SA-3-8, September, 2003 (in Japanese).
WPMC – Yokosuka, Japan. – Giuseppe Thadeu Freitas de Abreu, Craig John Mitchell and Ryuji Kohno: “On the Orthogonality of Hermite Pulses for Ultra Wideband Communications,” Wireless Personal Multimedia Communications (WPMC 2003), vol.2, pp. 288-292, October 19-22, 2003.
WPMC – Yokosuka, Japan. – Craig John Mitchell, Giuseppe Thadeu Freitas de Abreu, Craig John Mitchell and Ryuji Kohno: “Analysis of Combined PPM and Orthogonal Pulse Shape Detection in UWB Systems,” Wireless Personal Multimedia Communications (WPMC 2003), October 19-22, 2003.
IEEE ISIT – Yokohama, Japan – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Orthogonal Decoding of Space-Time Block Codes in Fast Fading,” Proc. IEEE International Symposium on Information Theory (ISIT 2003), pp. 155., June 29 – July 4, 2003.
IEEE ISIT – Yokohama, Japan – Kouji Ishii, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Turbo-Like Space-Time Coding for Beamforming Arrays,” Proc. IEEE International Symposium on Information Theory (ISIT 2003), June 29 – July 4, 2003.
IEEE IWUWBS – Oulu, Finland – Giuseppe Thadeu Freitas de Abreu, Craig John Mitchell, Louis Gordon Trichard and Ryuji Kohno: “A Note on the Design of Orthogonal Hermite Pulse for UWB Communications,” Proc. IEEE International Workshop on Ultra Wideband Systems (IWUWBS 2003), June 2-5, 2003.
IEEE IWUWBS – Oulu, Finland – Tadatomo Sato, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Beamforming Array Antenna for UltraWideband Communications,” Proc. IEEE International Workshop on Ultra Wideband Systems (IWUWBS 2003), June 2-5, 2003.
Symposium of the IEICE – Tadatomo Sato, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “A Study on the Construction of Adaptive Array Antennas that Realizes Single Directivity for UWB-IR,” 24th Symposium of the IEICE Society on Communications pp. A-5-24, March, 2003 (in Japanese).
Sony Co., Japan – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Method and Device for Using Array Antenna to Estimate the Direction of Sources in Near Field”, US Patent no. 2002/0027526-A1 March, 2002.
SITA – Ikaho, Japan – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “An Orthogonal Decoder for Space-Time Block Codes in Fast Fading,” 25th Symposium on Information Theory and Applications (SITA 2002), pp. 375-378, December 10-13, 2002.
SITA – Ikaho, Japan – Craig John Mitchell, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Two Dimensional Codulation for UWB Systems,” 25th Symposium on Information Theory and Applications (SITA 2002), pp. 307-310, December 10-13, 2002.
SITA – Ikaho, Japan – Tadatomo Sato, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “A Study on Constitution Method of Array Antenna for Ultra Wideband Wireless Communications,” 25th Symposium on Information Theory and Applications (SITA 2002), pp. 287-290, 10-13, 2002 (in Japanese).
IEEE PIMRC – Lisbon, Portugal – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Non-Differential Space-Time Transmission Diversity in Fast Fading,” Proc. IEEE Personal Indoor Mobile Radio Communications (PIMRC 2002), November 15-18, 2002.
IEEE ISSSTA – Prague, Czech Republic – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Beamwidth-Adjustable Low Sidelobe Beamforming for Space-Time Diversity,” International Symposium on Spread Spectrum Techniques and Applications (ISSSTA 2002), pp. 526-530, November 2-5, 2002.
ISITA – Xian, China – Toshiro Sawasaki, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “A Study on Optimal Equalization of Transmitter and Receiver in Space and Time Domains Using Adaptive Array Antennas,” International Symposium on Information Theory and Applications (ISITA 2002), pp. 715-718, October 7-11, 2002.
General Symposium of the IEICE (Fall) – Miyazaki, Japan – Tadatomo Sato, Kaziki Eshima, Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “A Study on Constitution Method of Array Antenna for Ultra Wideband Wireless Communications,” Symposium of the IEICE Society of Communications, B-5-77, pp. 374, September 10-13, 2002 (in Japanese).
EuroWireless – Florence, Italy – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Chebyshev-like Low Sidelobe Beampatterns with Adjustable Beamwidth and Steering-Invariance,” European Wireless 2002, pp. 732-738, February 26-28, 2002.

2001–1999

IEICE Transactions on Communications – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Adaptively Sampled Near Field Smart Array Antenna for Indoors Wireless Communications,” IEICE Transactions on Communications – Special Issue on Adaptive Array Antenna Tech. for Adv. Wireless Communications, vol. E84-B, no. 7, pp. 1743-1759, Jul. 2001.
SITA – Kobe, Japan – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Modified Chebyshev Design with Beamwidth-Adjustable Low Sidelobe Beamforming for Beamspace-Time Diversity,” 24th Symposium on Information Theory and Applications (SITA 2001), pp. 533-536, December 4-7, 2001.
SITA – Minami Aso, Japan – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Multiuser Joint Path Distribution Estimation Algorithm with Adaptive Array Antenna,” 23rd Symposium on Information Theory and Applications (SITA 2000), pp. 411-414, December 10-13, 2000.
WPMC – Bangkok, Thailand – Giuseppe Thadeu Freitas de Abreu, Sergio Forcellini and Ryuji Kohno:“Spatial Filter-Oriented Adaptive Spreading Technique: Joining CDMA and SDMA,” Wireless Personal Multimedia Communications (WPMC 2000), pp.344-349, November 11-15, 2000.
IEEE PIMRC – London, U.K. – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Smart Array Antenna for IEEE 802.11 Wireless LAN II with Near Field Distortion Compensation,” Personal Indoor Mobile Radio Communications (PIMRC 2000), pp. 1454-1458, September 18-21, 2000.
IEEE ISSSTA – Parsipany, U.S.A. – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Near Field Smart Array Antenna for IEEE 802.11 Wireless LAN II,” International Symposium on Spread Spectrum Techniques and Applications (ISSSTA 2000) pp. 25-29, September 6-8, 2000.
ICT – Acapulco, Mexico – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Near Field Smart Array Antenna for Indoor Applications,” International Conference on Telecommunications (ICT 2000), pp. 900-906, May 22-25, 2000.
SITA – Echigo Yuzawa, Japan – Giuseppe Thadeu Freitas de Abreu and Ryuji Kohno: “Adaptive Antenna for Indoors Environment,” 22nd Symposium on Information Theory and Applications (SITA 1999), pp. 737-740, November 30 – December 3, 1999.