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Koji Ishibashi
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Publications
- 2022
- [j46]Koji Ishibashi, Takanori Hara, Sota Uchimura, Tetsuya Iye, Yoshimi Fujii, Takahide Murakami, Hiroyuki Shinbo:
User-Centric Design of Millimeter Wave Communications for Beyond 5G and 6G. IEICE Trans. Commun. 105-B(10): 1117-1129 (2022) - [j43]Takanori Hara, Koji Ishibashi:
Blind Multiple Measurement Vector AMP Based on Expectation Maximization for Grant-Free NOMA. IEEE Wirel. Commun. Lett. 11(6): 1201-1205 (2022) - [c66]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 - [c65]Kohei Ueda, Takanori Hara, Koji Ishibashi:
Iterative Activity Detection and Carrier Frequency Offset Estimation for Grant-Free NOMA. PIMRC 2022: 1-6 - 2021
- [j42]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) - [j41]Takanori Hara, Ryuhei Takahashi, Koji Ishibashi:
Ambient OFDM Pilot-Aided Backscatter Communications: Concept and Design. IEEE Access 9: 89210-89221 (2021) - [j39]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) - [j37]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) - 2020
- [j34]Hiroki Iimori, Giuseppe Thadeu Freitas de Abreu, Omid Taghizadeh, Razvan-Andrei Stoica, Takanori Hara, Koji Ishibashi:
Stochastic Learning Robust Beamforming for Millimeter-Wave Systems With Path Blockage. IEEE Wirel. Commun. Lett. 9(9): 1557-1561 (2020) - [c61]Ryota Yatsu, Takanori Hara, Koji Ishibashi, Sota Tsuchiya, Hideki Endo:
Packet Aggregation Based on Encryption-Then-Compression for Highly Efficient Multi-Hop Transmission. APSIPA 2020: 1466-1471 - [c59]Takanori Hara, Hiroki Iimori, Koji Ishibashi:
Activity Detection for Uplink Grant-Free NOMA in the Presence of Carrier Frequency Offsets. ICC Workshops 2020: 1-6 - [c56]Takanori Hara, Koji Ishibashi:
Grant-Free NOMA Using Approximate Message Passing with Multi-Measurement Vector. ICOIN 2020: 426-431 - [c55]Takahide Murakami, Yoji Kishi, Koji Ishibashi, Keisuke Kasai, Hiroyuki Shinbo, Morihiko Tamai, Kensuke Tsuda, Masataka Nakazawa, Yu Tsukamoto, Hiroyuki Yokoyama, Yoshimi Fujii, Yuta Seki, Shinobu Nanba, Takanori Hara, Fumiyuki Adachi, Takayuki Sotoyama:
Research Project to Realize Various High-reliability Communications in Advanced 5G Network. WCNC 2020: 1-8 - 2019
- [j32]Razvan-Andrei Stoica, Giuseppe Thadeu Freitas de Abreu, Takanori Hara, Koji Ishibashi:
Massively Concurrent Non-Orthogonal Multiple Access for 5G Networks and Beyond. IEEE Access 7: 82080-82100 (2019) - [j28]Takanori Hara, Koji Ishibashi:
Grant-Free Non-Orthogonal Multiple Access With Multiple-Antenna Base Station and Its Efficient Receiver Design. IEEE Access 7: 175717-175726 (2019) - [c54]Takanori Hara, Koji Ishibashi:
Low Complexity Uplink Grant-Free NOMA Based on Boosted Approximate Message Passing. ACSSC 2019: 1877-1880 - [c50]Takanori Hara, Razvan-Andrei Stoica, Koji Ishibashi, Giuseppe Thadeu Freitas de Abreu:
On the Sum-Rate Capacity and Spectral Efficiency Gains of Massively Concurrent NOMA Systems. WCNC 2019: 1-7 - 2018
- [c41]Takanori Hara, Koji Ishibashi, Soon Xin Ng, Lajos Hanzo:
Low-Complexity Generator Polynomial Search for Turbo Trellis-Coded Spatial Modulation Using Symbol-based EXIT Charts. ISTC 2018: 1-5 - [c39]Kazuya Ohira, Takanori Hara, Koji Ishibashi:
Aggregate-Compression-Aided Subcarrier IQ Index Modulation. WPNC 2018: 1-6
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