An efficient algorithm for simulating error vector magnitude in nonlinear OFDM amplifiers. - Shingo Yamanouchi; Kazuaki Kunihiro; Hikaru Hida (CICC, 2004)

OFDM Error Vector Magnitude Distortion Analysis. - Shingo Yamanouchi; Kazuaki Kunihiro; Hikaru Hida (IEICE Trans. Electron., 2006)

A 30-MHz-2.4-GHz CMOS Receiver With Integrated RF Filter and Dynamic-Range-Scalable Energy Detector for Cognitive Radio Systems. - Masaki Kitsunezuka; Hiroshi Kodama; Naoki Oshima; Kazuaki Kunihiro; Tadashi Maeda; Muneo Fukaishi (IEEE J. Solid State Circuits, 2012)

Efficient spectrum utilization: Cognitive radio approach. - Masaki Kitsunezuka; Kazuaki Kunihiro (RWS, 2013)

RF and signal processing technologies for 4G mobile networks. - Shingo Yamanouchi; Kazuaki Kunihiro; Shinichi Hori; Masao Ikekawa; Naoki Nishi (VLSI-DAT, 2013)

Wireless D-band communication up to 60 Gbit/s with 64QAM using GaAs HEMT technology. - Ikuma Ando; Masaaki Tanio; Masaharu Ito; Toshihide Kuwabara; Tsunehisa Marumoto; Kazuaki Kunihiro (RWS, 2016)

Learning-Based Distributed Radio-Environment Observation for Dynamic Spectrum Sharing. - Masaki Kitsunezuka; Kenta Tsukamoto; Naoki Oshima; Keiichi Motoi; Kazuaki Kunihiro (GLOBECOM, 2017)

A 200 MHz Bandwidth GaAs Switch-Mode Supply Modulator. - Tatsuya Soma; Shinichi Hori; Kazuaki Kunihiro (BCICTS, 2018)

Highly accurate radio environment mapping method based on transmitter localization and spatial interpolation in urban LoS/NLoS scenario. - Kenta Tsukamoto; Masaki Kitsunezuka; Kazuaki Kunihiro (WiSNet, 2018)

High Efficiency Power Amplifiers for Mobile Base Stations: Recent Trends and Future Prospects for 5G. - Kazuaki Kunihiro; Shinichi Hori; Tomoya Kaneko (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2018)

A 28GHz CMOS Phased-Array Beamformer Utilizing Neutralized Bi-Directional Technique Supporting Dual-Polarized MIMO for 5G NR. - Jian Pang; Zheng Li 021; Ryo Kubozoe; Xueting Luo; Rui Wu 001; Yun Wang 008; Dongwon You; Ashbir Aviat Fadila; Rattanan Saengchan; Takeshi Nakamura; Joshua Alvin; Daiki Matsumoto; et al. (ISSCC, 2019)

Learning-Based, Distributed Spectrum Observation System for Dynamic Spectrum Sharing in the 5G Era and Beyond. - Masaki Kitsunezuka; Kenta Tsukamoto; Jun Sakai; Taichi Ohtsuji; Kazuaki Kunihiro (IEICE Trans. Commun., 2019)

Foreword. - Kazuaki Kunihiro (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2019)

A 28-GHz CMOS Phased-Array Transceiver Based on LO Phase-Shifting Architecture With Gain Invariant Phase Tuning for 5G New Radio. - Jian Pang; Rui Wu 001; Yun Wang 008; Masato Dome; Hisashi Kato; Hongye Huang; Aravind Tharayil Narayanan; Hanli Liu; Bangan Liu; Takeshi Nakamura; Takuya Fujimura; Masaru Kawabuchi; et al. (IEEE J. Solid State Circuits, 2019)

A 28-GHz CMOS Phased-Array Beamformer Supporting Dual-Polarized MIMO with Cross-Polarization Leakage Cancellation. - Jian Pang; Zheng Li 021; Xueting Luo; Joshua Alvin; Rattanan Saengchan; Ashbir Aviat Fadila; Kiyoshi Yanagisawa; Yi Zhang 092; Zixin Chen; Zhongliang Huang; Xiaofan Gu; Rui Wu 001; et al. (VLSI Circuits, 2020)

A 28-GHz CMOS Phased-Array Beamformer Utilizing Neutralized Bi-Directional Technique Supporting Dual-Polarized MIMO for 5G NR. - Jian Pang; Zheng Li 021; Ryo Kubozoe; Xueting Luo; Rui Wu 001; Yun Wang 008; Dongwon You; Ashbir Aviat Fadila; Rattanan Saengchan; Takeshi Nakamura; Joshua Alvin; Daiki Matsumoto; et al. (IEEE J. Solid State Circuits, 2020)

A 39-GHz 64-Element Phased-Array Transceiver With Built-In Phase and Amplitude Calibrations for Large-Array 5G NR in 65-nm CMOS. - Yun Wang 008; Rui Wu 001; Jian Pang; Dongwon You; Ashbir Aviat Fadila; Rattanan Saengchan; Xi Fu; Daiki Matsumoto; Takeshi Nakamura; Ryo Kubozoe; Masaru Kawabuchi; Bangan Liu; et al. (IEEE J. Solid State Circuits, 2020)

Radio-over-Fiber Systems with 1-bit Digital Modulation for 5G/6G Indoor Wireless Communication. - Shinichi Hori; Yuma Kase; Naoki Oshima; Kazuaki Kunihiro (APWCS, 2021)

A Fast-Beam-Switching 28-GHz Phased-Array Transceiver Supporting Cross-Polarization Leakage Self-Cancellation. - Jian Pang; Zheng Li 021; Xueting Luo; Joshua Alvin; Kiyoshi Yanagisawa; Yi Zhang 092; Zixin Chen; Zhongliang Huang; Xiaofan Gu; Weichu Chen; Yun Wang 008; Dongwon You; et al. (VLSI Circuits, 2021)

A CMOS Dual-Polarized Phased-Array Beamformer Utilizing Cross-Polarization Leakage Cancellation for 5G MIMO Systems. - Jian Pang; Zheng Li 021; Xueting Luo; Joshua Alvin; Rattanan Saengchan; Ashbir Aviat Fadila; Kiyoshi Yanagisawa; Yi Zhang 092; Zixin Chen; Zhongliang Huang; Xiaofan Gu; Rui Wu 001; et al. (IEEE J. Solid State Circuits, 2021)

Millimeter-Wave CMOS Phased-Array Transceivers for 5G and Beyond. - Kenichi Okada 001; Jian Pang; Atsushi Shirane; Zheng Li 021; Yi Zhang 092; Naoki Oshima; Shinichi Hori; Kazuaki Kunihiro (PIMRC, 2022)

A 39-GHz CMOS Bi-Directional Doherty Phased-Array Beamformer Using Shared-LUT DPD with Inter-Element Mismatch Compensation Technique for 5G Base-Station. - Zheng Li 021; Jian Pang; Yi Zhang 092; Yudai Yamazaki; Qiaoyu Wang; Peng Luo; Weichu Chen; Yijing Liao; Minzhe Tang; Zhengyan Guo; Yun Wang 008; Xi Fu; et al. (VLSI Technology and Circuits, 2022)

A D-Band Sub-Harmonically Pumped Mixer with High LO Suppression Using 250-nm InP DHBT P-N Junction. - Shinji Hachiyama; Koki Tanji; Toshihide Kuwabara; Naoki Oshima; Kazuaki Kunihiro; Tomoya Kaneko (BCICTS, 2023)

A 39-GHz CMOS Bidirectional Doherty Phased- Array Beamformer Using Shared-LUT DPD With Inter-Element Mismatch Compensation Technique for 5G Base Station. - Zheng Li 021; Jian Pang; Yi Zhang 092; Yudai Yamazaki; Qiaoyu Wang; Peng Luo; Weichu Chen; Yijing Liao; Minzhe Tang; Yun Wang 008; Xi Fu; Dongwon You; et al. (IEEE J. Solid State Circuits, 2023)

Radio-over-Fiber System with 1-Bit Outphasing Modulation for 5G/6G Indoor Wireless Communication. - Yuma Kase; Shinichi Hori; Naoki Oshima; Kazuaki Kunihiro (IEICE Trans. Electron., 2023)

35-60GHz Switchless IF Bi-Directional Amplifier Using 65nm CMOS for 300GHz-Band Transceivers. - Abanob Shehata; Hans Herdian; Chun Wang; Chenxin Liu; Kazuaki Kunihiro; Hiroyuki Sakai 009; Atsushi Shirane; Kenichi Okada 001 (A-SSCC, 2024)

A Compact D-Band Phase Shifter with 0.1-degree Phase Resolution and 0.8-degree RMS Phase Error in 65 nm CMOS. - Takaya Uchino; Yudai Yamazaki; Sunghwan Park; Chenxin Liu; Anyi Tian; Abanob Shehata; Hiroyuki Sakai 009; Kazuaki Kunihiro; Atsushi Shirane; Kenichi Okada 001 (A-SSCC, 2024)

A 640-Gb/s 4×4-MIMO D-Band CMOS Transceiver Chipset. - Chenxin Liu; Zheng Li 021; Yudai Yamazaki; Hans Herdian; Chun Wang; Anyi Tian; Jun Sakamaki; Han Nie; Xi Fu; Sena Kato; Wenqian Wang; Hongye Huang; et al. (VLSI Technology and Circuits, 2024)

A 28GHz 4-Stream Time-Division MIMO Phased-Array Receiver Utilizing Nyquist-Rate Fast Beam Switching for 5G and Beyond. - Yi Zhang 092; Minzhe Tang; Jian Pang; Zheng Li 021; Dongfan Xu; Dingxin Xu; Yuncheng Zhang; Kazuaki Kunihiro; Hiroyuki Sakai 009; Atsushi Shirane; Kenichi Okada 001 (VLSI Technology and Circuits, 2024)

A D-Band CMOS Transceiver Chipset Supporting 640Gb/s Date Rate with 4?4 Line-of-Sight MIMO. - Chenxin Liu; Zheng Li 021; Yudai Yamazaki; Hans Herdian; Chun Wang; Anyi Tian; Jun Sakamaki; Han Nie; Xi Fu; Sena Kato; Wenqian Wang; Hongye Huang; et al. (ASP-DAC, 2025)

A 4-Stream 8-Element Time-Division MIMO Phased-Array Receiver for 5G NR and Beyond Achieving 9.6Gbps Data Rate. - Yi Zhang 092; Minzhe Tang; Zheng Li 021; Dongfan Xu; Kazuaki Kunihiro; Hiroyuki Sakai 009; Atsushi Shirane; Kenichi Okada 001 (ASP-DAC, 2025)

11.1 A 256-Element Ka-Band CMOS Phased-Array Receiver Using Switch-Type Quadrature-Hybrid-First Architecture for Small Satellite Constellations. - Sena Kato; Jill C. Mayeda; Keito Yuasa; Michihiro Ide; Takeshi Ota; Shu Date; Yudai Yamazaki; Xiaolin Wang; Xi Fu; Dongwon You; Makoto Higaki; Jumpei Sudo; et al. (ISSCC, 2025)

5.6 A Power-Efficient CORDIC-Less Digital Polar Transmitter Using 1b DSM-Based PA Supporting 256-QAM. - Yuncheng Zhang; Zezheng Liu; Duo Li; Minzhe Tang; Yi Zhang 092; Hongye Huang; Dingxin Xu; Waleed Madany; Ashbir Aviat Fadila; Wenqian Wang; Yuang Xiong; Daxu Zhang; et al. (ISSCC, 2025)

A LEO Satellite Mounted 256-Element 19 GHz CMOS Phased-Array Transmitter With On-Chip Amplitude and Phase Monitor. - Xiaolin Wang; Dongwon You; Xi Fu; Gao Yuan; Takeshi Ota; Jill C. Mayeda; Jun Sakamaki; Ashbir Aviat Fadila; Makoto Higaki; Jumpei Sudo; Hiroshi Takizawa; Masashi Shirakura; et al. (IEEE Access, 2025)

A 2.5 dB noise figure 28 GHz current-reused noise-cancelling LNA with gm-boosting in 65 nm CMOS for millimeter-wave MIMO applications. - Yi Zhang 092; Minzhe Tang; Dongfan Xu; Jian Pang; Hiroyuki Sakai 009; Kazuaki Kunihiro; Atsushi Shirane; Kenichi Okada 001 (IEICE Electron. Express, 2025)

A 640-Gb/s 4 × 4-MIMO D-Band CMOS Transceiver Chipset. - Chenxin Liu; Zheng Li 021; Yudai Yamazaki; Hans Herdian; Chun Wang; Anyi Tian; Jun Sakamaki; Han Nie; Xi Fu; Sena Kato; Wenqian Wang; Hongye Huang; et al. (IEEE J. Solid State Circuits, 2025)