A system for analyzing and visualizing business solutions provided by information technology companies in Japan. - Kei Nishimura; Koichi Kato; Yoichi Muraoka (ICWI, 2004)

Theoretical derivation of bit error rate for uplink OFDMA over nonlinear fading channels. - Kei Nishimura; Shoya Takebuchi; Fumiaki Maehara (PIMRC, 2013)

A Novel Modulo Loss Suppression Scheme Employing Theoretical BER Formula for MU-MIMO THP Systems. - Kei Nishimura; Tomoki Maruko; Hiromichi Tomeba; Takashi Onodera; Minoru Kubota; Fumiaki Maehara; Fumio Takahata (VTC Fall, 2015)

Theoretical Shannon Capacity Performance of Nonlinearly Amplified Uplink OFDMA Signals in the Presence of Terminal Mobility. - Takahiro Yamaguchi; Kei Nishimura; Fumiaki Maehara (VTC Fall, 2016)

An Active Copper-Cable Supporting 56-Gbit/s PAM4 and 28-Gbit/s NRZ with Continuous Time Linear Equalizer IC for to-Meters Reach Interconnection. - Koji Maeda; Takayasu Norimatsu; Kenji Kogo; Naohiro Kohmu; Kei Nishimura; Izumi Fukasaku (VLSI Circuits, 2018)

An Active-Copper-Cable with Continuous-Time-Linear-Equalizer IC for 30-AWG 7-meters Reach Interconnect of 400-Gbit/s QSFP-DD. - Koji Maeda; Shoji Yamamoto; Naohiro Kohmu; Kei Nishimura; Izumi Fukasaku (APCCAS, 2019)