Optimal spreading sequences in large CDMA systems: A statistical mechanics approach. - Koichiro Kitagawa; Toshiyuki Tanaka (ISIT, 2008)

Interference reduction in CDMA channels: A statistical-mechanics approach. - Toshiyuki Tanaka; Koichiro Kitagawa (WiOpt, 2008)

Optimization of sequences in CDMA systems: A statistical-mechanics approach. - Koichiro Kitagawa; Toshiyuki Tanaka (Comput. Networks, 2010)

A handover optimization algorithm with mobility robustness for LTE systems. - Koichiro Kitagawa; Toshihiko Komine; Toshiaki Yamamoto; Satoshi Konishi (PIMRC, 2011)

Performance evaluation of handover in LTE-Advanced systems with pico cell Range Expansion. - Koichiro Kitagawa; Toshihiko Komine; Toshiaki Yamamoto; Satoshi Konishi (PIMRC, 2012)

Experimental Results between Non-Linear and Linear Precoding Using Multiuser MIMO Testbed. - Tomoko Matsumoto; Yasuyuki Hatakawa; Koichiro Kitagawa; Satoshi Konishi (VTC Spring, 2013)

Effect of Cell Range Expansion to Handover Performance for Heterogeneous Networks in LTE-Advanced Systems. - Koichiro Kitagawa; Toshiaki Yamamoto; Satoshi Konishi (IEICE Trans. Commun., 2013)

Indoor experiment of 8-by-2 multiuser MIMO transmission using Tomlinson-Harashima-Precoding subject to limited CSI feedback. - Yasuyuki Hatakawa; Tomoko Matsumoto; Koichiro Kitagawa; Satoshi Konishi (RWS, 2014)

Development of multiuser MIMO testbed adopting Tomlinson-Harashima Precoding and limited CSI feedback. - Tomoko Matsumoto; Yasuyuki Hatakawa; Koichiro Kitagawa; Satoshi Konishi (RWS, 2014)

A User Selection Algorithm for D2D Multicast Communication Underlaying Cellular Systems. - Koichiro Kitagawa; Hiroaki Homma; Yasuhiro Suegara; Yoji Kishi (WCNC, 2017)

Reduction Scheme of SS for D2D Relay-Path Selection to Achieve Guaranteed Throughput for 5G systems. - Bingxuan Zhao; Koichiro Kitagawa; Takashi Fujimoto; Katsuo Yunoki; Ryochi Kataoka; Hiroyuki Shinbo (WOCN, 2018)