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Publication search results
found 55 matches
- 2024
- Sota Uchimura, Koji Ishibashi, Hiroki Iimori, Paulo Valente Klaine, Szabolcs Malomsoky:
Efficient Channel Tracking Based on Compressive Sensing for OFDM Millimeter-Wave Systems. IEEE Trans. Veh. Technol. 73(8): 11411-11426 (2024) - Naoki Endo, Hiroki Iimori, Chandan Pradhan, Szabolcs Malomsoky, Naoki Ishikawa:
Boosting Spectral Efficiency With Data-Carrying Reference Signals on the Grassmann Manifold. IEEE Trans. Wirel. Commun. 23(8): 10137-10149 (2024) - Takumi Takahashi, Hiroki Iimori, Koji Ishibashi, Shinsuke Ibi, Giuseppe Thadeu Freitas de Abreu:
Bayesian Bilinear Inference for Joint Channel Tracking and Data Detection in Millimeter-Wave MIMO Systems. IEEE Trans. Wirel. Commun. 23(9): 11136-11153 (2024) - Taiki Kato, Hiroki Iimori, Chandan Pradhan, Szabolcs Malomsoky, Naoki Ishikawa:
Performance Analysis of Data-Carrying Reference Signal in Time-Varying Channels. VTC Spring 2024: 1-5 - Naoki Endo, Hiroki Iimori, Chandan Pradhan, Szabolcs Malomsoky, Naoki Ishikawa:
Boosting Spectral Efficiency with Data-Carrying Reference Signals on the Grassmann Manifold. CoRR abs/2401.02597 (2024) - 2023
- Sota Uchimura, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi:
Outage-Minimization Coordinated Multi-Point for Millimeter-Wave OFDM With Random Blockages. IEEE Trans. Veh. Technol. 72(7): 8783-8796 (2023) - Takumi Takahashi, Hiroki Iimori, Kengo Ando, Koji Ishibashi, Shinsuke Ibi, Giuseppe Thadeu Freitas de Abreu:
Bayesian Receiver Design via Bilinear Inference for Cell-Free Massive MIMO With Low-Resolution ADCs. IEEE Trans. Wirel. Commun. 22(7): 4756-4772 (2023) - Hiroki Iimori, Jörg Huschke, Joao Vieira:
Radio Unit Configuration for Dynamic Time Division Duplex in Distributed MIMO Systems. GLOBECOM 2023: 2542-2547 - Hiroki Iimori, Eito Kurihara, Takumi Yoshida, Joao Vieira, Szabolcs Malomsoky:
Amplification Strategy in Repeater-Assisted MIMO Systems via Minorization Maximization. GLOBECOM 2023: 4989-4994 - Yuya Nishi, Takumi Takahashi, Hiroki Iimori, Giuseppe Abreu, Shinsuke Ibi, Seiichi Sampei:
Wireless Location Tracking via Complex-Domain Super MDS with Time Series Self-Localization Information. ICASSP 2023: 1-5 - Yuta Kanazawa, Hiroki Iimori, Chandan Pradhan, Szabolcs Malomsoky, Naoki Ishikawa:
Multiple Superimposed Pilots for Accurate Channel Estimation in Orthogonal Time Frequency Space Modulation. VTC Fall 2023: 1-5 - 2022
- Shuto Fukue, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi:
Joint Access Configuration and Beamforming for Cell-Free Massive MIMO Systems With Dynamic TDD. IEEE Access 10: 40130-40149 (2022) - Kengo Ando, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi:
User-Heterogeneous Cell-Free Massive MIMO Downlink and Uplink Beamforming via Tensor Decomposition. IEEE Open J. Commun. Soc. 3: 740-758 (2022) - Hiroki Iimori, Takumi Takahashi, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu, David González G., Osvaldo Gonsa:
Joint Activity and Channel Estimation for Extra-Large MIMO Systems. IEEE Trans. Wirel. Commun. 21(9): 7253-7270 (2022) - Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, Hiroki Iimori, David González G., Osvaldo Gonsa:
Scalable Quadrature Spatial Modulation. IEEE Trans. Wirel. Commun. 21(11): 9293-9311 (2022) - Omid Taghizadeh, Tianyu Yang, Hiroki Iimori, Giuseppe Abreu, Ali Cagatay Cirik, Rudolf Mathar:
Quantization-Aided Secrecy: FD C-RAN Communications With Untrusted Radios. IEEE Trans. Wirel. Commun. 21(10): 8522-8535 (2022) - Kengo Ando, Hiroki Iimori, Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, David González González, Osvaldo Gonsa:
An Iterative Discrete Least Square Estimator with Dynamic Parameterization via Deep-Unfolding. IEEECONF 2022: 32-36 - Seiya Otsuka, Hiroki Iimori, Kengo Ando, Giuseppe Thadeu Freitas de Abreu, Koji Ishibashi, Naoki Ishikawa:
Analysis of Secret Key Agreement Protocol for Massive MIMO Systems. CISIS-ICEUTE 2022: 86-94 - Takanori Hara, Hiroki Iimori, Koji Ishibashi:
Grant-Free NOMA Using Time-Delay Domain for Low-Latency Massive Access over MIMO-OFDM. ICC 2022: 3526-3531 - Hiroki Iimori, Takumi Takahashi, Hyeon Seok Rou, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu, David González G., Osvaldo Gonsa:
Grant-Free Access for Extra-Large MIMO Systems Subject to Spatial Non-Stationarity. ICC 2022: 1758-1762 - 2021
- Kengo Ando, Hiroki Iimori, Takumi Takahashi, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu:
Uplink Signal Detection for Scalable Cell-Free Massive MIMO Systems With Robustness to Rate-Limited Fronthaul. IEEE Access 9: 102770-102782 (2021) - Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Omid Taghizadeh, Razvan-Andrei Stoica, Takanori Hara, Koji Ishibashi:
A Stochastic Gradient Descent Approach for Hybrid mmWave Beamforming With Blockage and CSI-Error Robustness. IEEE Access 9: 74471-74487 (2021) - Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Takanori Hara, Koji Ishibashi, Razvan-Andrei Stoica, David González G., Osvaldo Gonsa:
Robust Symbol Detection in Large-Scale Overloaded NOMA Systems. IEEE Open J. Commun. Soc. 2: 512-533 (2021) - Omid Taghizadeh, Slawomir Stanczak, Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu:
Full-Duplex Amplify-and-Forward MIMO Relaying: Design and Performance Analysis Under Erroneous CSI and Hardware Impairments. IEEE Open J. Commun. Soc. 2: 1249-1266 (2021) - Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, David González G., Osvaldo Gonsa:
Mitigating Channel Aging and Phase Noise in Millimeter Wave MIMO Systems. IEEE Trans. Veh. Technol. 70(7): 7237-7242 (2021) - Hiroki Iimori, Takumi Takahashi, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu, Wei Yu:
Grant-Free Access via Bilinear Inference for Cell-Free MIMO With Low-Coherence Pilots. IEEE Trans. Wirel. Commun. 20(11): 7694-7710 (2021) - Andre Saito Guerreiro, Hiroki Iimori, Koji Ishibashi:
Low Latency Beam-Sweeping for Millimeter Wave Systems via Pessimistic Optimization. IEEE Wirel. Commun. Lett. 10(12): 2742-2746 (2021) - Takanori Hara, Hiroki Iimori, Koji Ishibashi:
Hyperparameter-Free Receiver for Grant-Free NOMA Systems With MIMO-OFDM. IEEE Wirel. Commun. Lett. 10(4): 810-814 (2021) - Omid Taghizadeh, Tianyu Yang, Hiroki Iimori, Giuseppe Abreu, Ali Cagatay Cirik, Rudolf Mathar:
Quantization-Aided Secrecy: FD C-RAN Communications with Untrusted Radios. CoRR abs/2107.08495 (2021) - 2020
- Naoya Hirosawa, Hiroki Iimori, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu:
Minimizing Age of Information in Energy Harvesting Wireless Sensor Networks. IEEE Access 8: 219934-219945 (2020)
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