Publications

1. Yuto Hama and Hideki Ochiai, “Performance Analysis of Matched-Filter Detector for MIMO Spatial Multiplexing over Rayleigh Fading Channels with Imperfect Channel Estimation," IEEE Trans. Commun., vol. 67, no. 5, pp. 3220-3233, May 2019. [PDF] 

2. Daisuke Kitayama, Yuto Hama, Kenta Goto, Kensuke Miyachi, Takeshi Motegi, and Osamu Kagaya, “Transparent dynamic metasurface for a visually unaffected reconfigurable intelligent surface: controlling transmission/reflection and making a window into an RF lens,” Optics Express, vol. 29, no. 18, pp. 29292-29307, Aug. 2021.  [PDF]

3. Yuto Hama and Hideki Ochiai, “Matched-Filter Detector with Quadrature Interference Cancellation for Coded Uplink Multiuser MIMO Systems with Massive IoT Devices,” IEEE Trans. Wireless Commun., vol. 21, no. 6, pp. 4025-4038, June 2022. [PDF] 

4. Yuto Hama and Hideki Ochiai, “Binary-Input Ternary-Output Turbo Codes for Ternary PSK Transmission,” IEEE Commun. Lett., vol. 26, no. 9, Sep. 2022. [PDF] 

5. Yuto Hama and Hideki Ochiai, “Time-Frequency Domain Non-Orthogonal Multiple Access for Power Efficient Communications,” IEEE Trans. Wireless Commun., vol. 22, no. 9, Sep. 2023. [PDF] 

6. Tianji Shen, Yuto Hama, and Hideki Ochiai, "STBC-Enabled Secure Wireless Transmission with Cooperative Devices under Imperfect CSI of Destination," IEEE Access, vol. 11, pp. 46804-46819, May 2023. [PDF]

7. Daisuke Kitayama, Adam Pander, Yuto Hama, and Hiroyuki Takahashi, "Alignment-free twisted-split-ring metasurface on single substrate with 2π phase range for linearly polarized sub-terahertz wave," Optics Express, vol. 31, no. 13, pp. 20769-20786, Jun. 2023. [PDF]

8. Yuto Hama and Hideki Ochiai, “On the Achievable Spectral Efficiency of Non-Orthogonal Frequency Division Multiplexing,” IEEE Trans. Commun., vol. 71, no. 11, Nov. 2023. [PDF]

9. Yuto Hama and Hideki Ochiai, “Can Spatial Modulation Outperform Spatial Multiplexing in Practical Band-Limited Coded Systems?,” IEEE Commun. Mag., vol. 62, no. 5, May 2024.

1. Yuto Hama and Hideki Ochiai, “A Low-Complexity Matched Filter Detector with Parallel Interference Cancellation for Massive MIMO Systems,” in Proc. IEEE WiMob’16, New York, NY, Oct. 2016.

2. Yuto Hama and Hideki Ochiai, “Performance Analysis of Matched Filter Detector for MIMO Systems in Rayleigh Fading Channels,” in Proc. IEEE GLOBECOM’17, Singapore, Dec. 2017.

3. Yuto Hama and Hideki Ochiai, "Performance Comparison of Low-Complexity MIMO System with Matched-Filter Detector and Interference Cancellation," in Proc. IEEE ICT’18, Saint-Malo, France, June 2018.

4. Yuto Hama and Hideki Ochiai, "Performance of Polar Coded MIMO Systems with Matched-Filter Detector and Interference Cancellation," in Proc. IEEE GLOBECOM ‘19, Waikoloa, HI, USA, Dec. 2019.

5. Yuto Hama and Hideki Ochiai, "Performance of Coded MIMO Spatial Modulation with Scaling Matched-Filter Detector," in Proc. IEEE GLOBECOM ‘20, Taipei, Taiwan, Dec. 2020.

6. Yuto Hama, Hideki Ochiai, and Junji Shikata, “Performance Analysis of Wireless Steganography based on OFDM and DFT-s-OFDM Signals over Frequency-Selective Rayleigh Fading Channels,” in Proc. WPMC’21, Okayama, Japan, Dec. 2021.

7. Nobuhide Nonaka, Satoshi Suyama, Tatsuki Okuyama, Yuto Hama, Daisuke Kitayama, Takahiro Asai, Shoji Itoh, Anders Carlsson, Johan Furuskog, Magnus Wikström, Qiang Zhang, Kenichiro Kamohara, Fumitoshi Abe, and Reiji Ishima, "Experimental Trial aboard Shinkansen Test Train Running at 360 km/h for 5G Evolution," in Proc. IEEE VTC-spring'22, Helsinki, Finland, Jun. 2022.

8. Yuto Hama, Kazuaki Hanazawa, Hideki Ochiai, and Junji Shikata, ",Performance Analysis for Coded Wireless Steganography System With OFDM Signaling," in Proc. IEEE RWW2023, Las Vegas, NV, USA, Jan. 2023.

9. Yuto Hama and Hideki Ochiai, "Serially Concatenated Systematic Coding for Wireless Steganography With OFDM Signaling," in Proc. IEEE GLOBECOM ‘23, Kuala Lumpur, Malaysia, Dec. 2023.

10. Kazuaki Hanazawa, Yuto Hama, and Hideki Ochiai, "Performance Comparison of Clipped and Filtered OFDM/QAM and SC/APSK With BICM," in Proc. IEEE WCNC2024, Las Vegas, NV, USA, Jan. 2024.

1. Yuto Hama, Daisuke Kitayama, Hiroyuki Takahashi, and Hideki Ochiai, "Binary Phase Optimization based on Quantum Annealing for Reconfigurable Intelligent Surfaces," IEICE Society Taikai, online, Sep. 2022.

2. Yuto Hama and Hideki Ochiai, "On Performance of Faster-Than-Nyquist Signaling Based on Discrete Fractional Fourier Transform," SITA, Noboribetsu, Nov. 2022.

3. Yuto Hama, Daisuke Kitayama, Hiroyuki Takahashi, and Hideki Ochiai, "On Discrete Phase Shifts for Reconfigurable Intelligent Surface Aided Multi-User Communications," IEICE Sougou Taikai, Omiya, Mar. 2023.

4. Keita Ito, Yuto Hama, and Hideki Ochiai, "Signal Design of Polar Coded Downlink NOMA Satellite Communication Considering PAPR Constraints," IEICE RCS, Nagano, Aug. 2023.

5. Kumpei Arimatsu, Yuto Hama, and Hideki Ochiai, "On Secrecy Gap Enhancement for Polar Coded Multi-User MIMO System Under Imperfect CSI" IEICE Society Taikai, Nagoya, Sep. 2023.

6. Yuto Hama, Daisuke Kitayama, Hiroyuki Takahashi, and Hideki Ochiai, "Multiple Beamforming for Reconfigurable Intelligent Surfaces Based on Discrete Phase Shifts Optimized for Single-User," IEICE Sougou Taikai, Hiroshima, Mar. 2024.

7. Yuto Hama, "On Physical Layer Security Based on Dynamic Frozen Bit Design for Polar Coded OFDM Systems," IEICE RCS, Hokkaido, Jul. 2024.

8. Yuto Hama, "[Invited Talk] Multiple Antenna Techniques and Block Transmission," IEICE SIP, Fukui, Aug. 2024.

9. Yuto Hama, "[Invited Talk] Block Transmission Based on Non-Orthogonal Signaling," IEICE WBS, Kagoshima, Dec. 2024.

10. 
    

Yuto Hama, "Design of Low-Complexity Detection based on Matched-Filter for Coded MIMO Systems," Ph.D. thesis, Yokohama National University, March, 2022.