Pilot-Assisted Decision Feedback Channel Estimation for STTD in OFDM Mobile Radio. - Koichi Ishihara; Kazuaki Takeda 001; Fumiyuki Adachi (IEICE Trans. Commun., 2005)

Frequency-domain Soft Interference Cancellation for Multicode CDMA Transmissions. - Koichi Ishihara; Kazuaki Takeda 001; Fumiyuki Adachi (VTC Spring, 2006)

Downlink DS-CDMA Transmission with Joint MMSE Equalization and ICI Cancellation. - Kazuaki Takeda 001; Koichi Ishihara; Fumiyuki Adachi (VTC Spring, 2006)

Iterative Frequency-Domain Soft Interference Cancellation for Multicode DS- and MC-CDMA Transmissions and Performance Comparison. - Koichi Ishihara; Kazuaki Takeda 001; Fumiyuki Adachi (IEICE Trans. Commun., 2006)

Frequency-Domain ICI Cancellation with MMSE Equalization for DS-CDMA Downlink. - Kazuaki Takeda 001; Koichi Ishihara; Fumiyuki Adachi (IEICE Trans. Commun., 2006)

Multiuser Detection Method for Single-Carrier Transmission in Uplink Multiuser MIMO Access. - Koichi Ishihara; Yasushi Takatori; Shuji Kubota (VTC Fall, 2007)

Frequency-Domain Multi-Stage Soft Interference Cancellation for DS-CDMA Uplink Signal Transmission. - Koichi Ishihara; Kazuaki Takeda 001; Fumiyuki Adachi (IEICE Trans. Commun., 2007)

Iterative Channel Estimation for Frequency-Domain Equalization of DSSS Signals. - Koichi Ishihara; Kazuaki Takeda 001; Fumiyuki Adachi (IEICE Trans. Commun., 2007)

New Robust Beamforming Method for Frequency Offsets in Uplink Multiuser OFDM-MIMO. - Yasushi Takatori; Riichi Kudo; Atsushi Ohta; Koichi Ishihara; Kentaro Nishimori; Shuji Kubota (IEICE Trans. Commun., 2007)

Multiuser Detection Method Robust against Timing Offset for OFDM Uplink Transmission. - Koichi Ishihara; Yasushi Takatori; Kentaro Nishimori; Kazuyasu Okada (VTC Spring, 2008)

Frequency-Domain Equalization for Coherent Optical Single-Carrier Transmission Systems. - Koichi Ishihara; Takayuki Kobayashi; Riichi Kudo; Yasushi Takatori; Akihide Sano; Yutaka Miyamoto (IEICE Trans. Commun., 2009)

Overlap Frequency-Domain Multiuser Detection for Asynchronous Uplink Multiuser MIMO-OFDM Systems. - Koichi Ishihara; Yasushi Takatori; Kentaro Nishimori; Kazuyasu Okada (IEICE Trans. Commun., 2009)

A Novel Dynamic Channel Access Scheme Using Overlap FFT Filter-Bank for Cognitive Radio. - Motohiro Tanabe; Masahiro Umehira; Koichi Ishihara; Yasushi Takatori (IEICE Trans. Commun., 2009)

Multiuser Detection for Asynchronous Broadband Single-Carrier Transmission Systems. - Koichi Ishihara; Yasushi Takatori; Shuji Kubota; Fumiyuki Adachi (IEEE Trans. Veh. Technol., 2009)

Blind frequency-dependent IQ imbalance compensation scheme using CMA for OFDM system. - Munehiro Matsui; Tadao Nakagawa; Riichi Kudo; Koichi Ishihara; Masato Mizoguchi (PIMRC, 2011)

A Band-Divided Receiver Prototype for Wideband Optical Signals. - Munehiro Matsui; Riichi Kudo; Yasushi Takatori; Tadao Nakagawa; Koichi Ishihara; Masato Mizoguchi; Takayuki Kobayashi; Yutaka Miyamoto (IEICE Trans. Commun., 2011)

Experimental evaluation of distributed ZF beamforming in an indoor multi-cell environment. - Tomoki Murakami; Koichi Ishihara; Riichi Kudo; Yusuke Asai; Takeo Ichikawa; Masato Mizoguchi (APCC, 2012)

Game-theoretic analysis for multibandwidth WLAN channel selection by coordinated APs. - Kohei Hanada; Koji Yamamoto 001; Koichi Ishihara; Riichi Kudo; Masahiro Morikura (ICCS, 2012)

Indoor Experiments of Real-Time MU-MIMO with CSI Feedback Scheme for Wireless LAN Systems. - Koichi Ishihara; Yusuke Asai; Riichi Kudo; Takeo Ichikawa; Masato Mizoguchi (VTC Spring, 2012)

Successive Optimization Transmission for High and Low SNR Stations in Wireless LAN Systems. - Riichi Kudo; Koichi Ishihara; Tomoki Murakami; B. Hirantha Sithira Abeysekera; Yusuke Asai; Masato Mizoguchi (VTC Fall, 2012)

Indoor experiments on real-time multiuser MIMO transmission in wireless LAN systems. - Koichi Ishihara; Yusuke Asai; Riichi Kudo; Takeo Ichikawa; Masato Mizoguchi (WCNC, 2012)

Transmit power control suitable for interference-aware channel segregation based dynamic channel assignment. - Yuki Matsumura; Katsuhiro Temma; Koichi Ishihara; B. A. Hirantha Sithira Abeysekera; Tomoaki Kumagai; Fumiyuki Adachi (ICICS, 2013)

Interference-aware channel segregation based dynamic channel assignment using SNR-based transmit power control. - Yuki Matsumura; Katsuhiro Temma; Koichi Ishihara; B. Hirantha Sithira Abeysekera; Tomoaki Kumagai; Fumiyuki Adachi (ISPACS, 2013)

A Master-Slave Channel Selection Scheme to Improve Fairness among Cells in IEEE 802.11 Wireless LANs. - B. Hirantha Sithira Abeysekera; Koichi Ishihara; Yasuhiko Inoue; Takeo Ichikawa; Masato Mizoguchi (VTC Spring, 2013)

Selective beamforming for inter-cell interference mitigation in coordinated wireless LANs. - Koichi Ishihara; Tomoki Murakami; Yusuke Asai; Masato Mizoguchi (WPMC, 2013)

Development and experimental validation of downlink multiuser MIMO-OFDM in gigabit wireless LAN systems. - Koichi Ishihara; Yusuke Asai; Riichi Kudo; Takeo Ichikawa; Yasushi Takatori; Masato Mizoguchi (EURASIP J. Adv. Signal Process., 2013)

Game-Theoretic Analysis of Multibandwidth Channel Selection by Coordinated APs in WLANs. - Kohei Hanada; Koji Yamamoto 001; Masahiro Morikura; Koichi Ishihara; Riichi Kudo (IEICE Trans. Commun., 2013)

Implementation and Evaluation of Real-Time Distributed Zero-Forcing Beamforming for Downlink Multi-User MIMO Systems. - Tomoki Murakami; Koichi Ishihara; Riichi Kudo; Yusuke Asai; Takeo Ichikawa; Masato Mizoguchi (IEICE Trans. Commun., 2013)

Attenuators enable inversely proportional transmission power and carrier sense threshold setting in WLANs. - Daichi Okuhara; Fumiya Shiotani; Koji Yamamoto 001; Takayuki Nishio; Masahiro Morikura; Riichi Kudo; Koichi Ishihara (PIMRC, 2014)

AP cooperative diversity in wireless network using interference-aware channel segregation based dynamic channel assignment. - Martin T. H. Sirait; Yuki Matsumura; Katsuhiro Temma; Koichi Ishihara; B. A. Hirantha Sithira Abeysekera; Tomoaki Kumagai; Fumiyuki Adachi (PIMRC, 2014)

Network-Controlled Channel Allocation Scheme for IEEE 802.11 Wireless LANs: Experimental and Simulation Study. - B. Hirantha Sithira Abeysekera; Koichi Ishihara; Yasuhiko Inoue; Masato Mizoguchi (VTC Spring, 2014)

Maximum Likelihood Demodulators and Their Evaluations on Amplify-and-Forward Cooperative OFDM-Based Wireless LAN Systems. - Hayato Fukuzono; Yusuke Asai; Riichi Kudo; Koichi Ishihara; Masato Mizoguchi (IEICE Trans. Commun., 2014)

Wide-Range and Fast-Tracking Non-Data-Aided Frequency Offset Estimator for QAM Optical Coherent Receivers. - Tadao Nakagawa; Takayuki Kobayashi; Koichi Ishihara; Yutaka Miyamoto (IEICE Trans. Commun., 2016)

Cooperative Inter-cell Interference Mitigation Scheme with Downlink MU-MIMO Beamforming for Dense Wireless LAN Environment. - Koichi Ishihara; Tomoki Murakami; Yusuke Asai; Yasushi Takatori; Masato Mizoguchi (Wirel. Pers. Commun., 2017)

WiSMA: strategy management architecture for wireless resource optimization. - Tomoki Murakami; Toshiro Nakahira; Hirantha Abeysekera; Koichi Ishihara; Takafumi Hayashi; Hiroyuki Nakamura (ISPACS, 2018)

CSI Feedback Reduction Method for Downlink Multiuser MIMO Transmission Using Dense Distributed Antenna Selection. - Tomoki Murakami; Koichi Ishihara; Yasushi Takatori; Masato Mizoguchi; Kentaro Nishimori (IEICE Trans. Commun., 2018)

Dynamic Group-Based Antenna Selection for Uplink Multi-User MIMO in Distributed Antenna System. - Sho Yoshida; Kentaro Nishimori; Soichi Ito; Tomoki Murakami; Koichi Ishihara; Yasushi Takatori (IEICE Trans. Commun., 2018)

An Actual Stadium Verification of WLAN Using a Distributed Smart Antenna System (D-SAS). - Tomoki Murakami; Koichi Ishihara; Hirantha Abeysekera; Yasushi Takatori (IEICE Trans. Commun., 2021)

Dynamic Terminal Connection Control Using Multi-Radio Unlicensed Access for 5G Evolution and Beyond. - Toshiro Nakahira; Tomoki Murakami; Hirantha Abeysekera; Koichi Ishihara; Motoharu Sasaki; Takatsune Moriyama; Yasushi Takatori (IEICE Trans. Commun., 2021)

Distributed Detection of MIMO Spatial Multiplexed Signals in Terminal Collaborated Reception. - Du Fengning; Hidekazu Murata; Mampei Kasai; Toshiro Nakahira; Koichi Ishihara; Motoharu Sasaki; Takatsune Moriyama (IEICE Trans. Commun., 2021)

Centralized Control Method of Multi-Radio and Terminal Connection for 802.11 Wireless LAN Mixed Environment. - Toshiro Nakahira; Koichi Ishihara; Motoharu Sasaki; Hirantha Abeysekera; Tomoki Murakami; Takatsune Moriyama; Yasushi Takatori (IEICE Trans. Commun., 2022)