Koichi Ishihara

According to our database, Koichi Ishihara authored at least 40 papers between 2005 and 2022.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2022

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

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

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

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

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

WiSMA: strategy management architecture for wireless resource optimization.

Tomoki Murakami, Toshiro Nakahira, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Hiroyuki Nakamura

Proceedings of the 2018 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), 2018

2017

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

2016

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

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

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

Proceedings of the IEEE 79th Vehicular Technology Conference, 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

Proceedings of the 25th IEEE Annual International Symposium on Personal, 2014

Attenuators enable inversely proportional transmission power and carrier sense threshold setting in WLANs.

Daichi Okuhara, Fumiya Shiotani, Koji Yamamoto, Takayuki Nishio, Masahiro Morikura, Riichi Kudo, Koichi Ishihara

Proceedings of the 25th IEEE Annual International Symposium on Personal, 2014

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

Game-Theoretic Analysis of Multibandwidth Channel Selection by Coordinated APs in WLANs.

Kohei Hanada, Koji Yamamoto, Masahiro Morikura, Koichi Ishihara, Riichi Kudo

IEICE Trans. Commun., 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

Selective beamforming for inter-cell interference mitigation in coordinated wireless LANs.

Koichi Ishihara, Tomoki Murakami, Yusuke Asai, Masato Mizoguchi

Proceedings of the 16th International Symposium on Wireless Personal Multimedia Communications, 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

Proceedings of the 77th IEEE Vehicular Technology Conference, 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

Proceedings of the International Symposium on Intelligent Signal Processing and Communication Systems, 2013

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

Proceedings of the 9th International Conference on Information, 2013

2012

Indoor experiments on real-time multiuser MIMO transmission in wireless LAN systems.

Koichi Ishihara, Yusuke Asai, Riichi Kudo, Takeo Ichikawa, Masato Mizoguchi

Proceedings of the 2012 IEEE Wireless Communications and Networking Conference, 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

Proceedings of the 76th IEEE Vehicular Technology Conference, 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

Proceedings of the 75th IEEE Vehicular Technology Conference, 2012

Game-theoretic analysis for multibandwidth WLAN channel selection by coordinated APs.

Kohei Hanada, Koji Yamamoto, Koichi Ishihara, Riichi Kudo, Masahiro Morikura

Proceedings of the IEEE International Conference on Communication Systems, 2012

Experimental evaluation of distributed ZF beamforming in an indoor multi-cell environment.

Tomoki Murakami, Koichi Ishihara, Riichi Kudo, Yusuke Asai, Takeo Ichikawa, Masato Mizoguchi

Proceedings of the 18th Asia-Pacific Conference on Communications, 2012

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

Blind frequency-dependent IQ imbalance compensation scheme using CMA for OFDM system.

Munehiro Matsui, Tadao Nakagawa, Riichi Kudo, Koichi Ishihara, Masato Mizoguchi

Proceedings of the IEEE 22nd International Symposium on Personal, 2011

2009

Multiuser Detection for Asynchronous Broadband Single-Carrier Transmission Systems.

Koichi Ishihara, Yasushi Takatori, Shuji Kubota, Fumiyuki Adachi

IEEE Trans. Veh. Technol., 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

Overlap Frequency-Domain Multiuser Detection for Asynchronous Uplink Multiuser MIMO-OFDM Systems.

Koichi Ishihara, Yasushi Takatori, Kentaro Nishimori, Kazuyasu Okada

IEICE Trans. Commun., 2009

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

2008

Multiuser Detection Method Robust against Timing Offset for OFDM Uplink Transmission.

Koichi Ishihara, Yasushi Takatori, Kentaro Nishimori, Kazuyasu Okada

Proceedings of the 67th IEEE Vehicular Technology Conference, 2008

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

Iterative Channel Estimation for Frequency-Domain Equalization of DSSS Signals.

Koichi Ishihara, Kazuaki Takeda, Fumiyuki Adachi

IEICE Trans. Commun., 2007

Frequency-Domain Multi-Stage Soft Interference Cancellation for DS-CDMA Uplink Signal Transmission.

Koichi Ishihara, Kazuaki Takeda, Fumiyuki Adachi

IEICE Trans. Commun., 2007

Multiuser Detection Method for Single-Carrier Transmission in Uplink Multiuser MIMO Access.

Koichi Ishihara, Yasushi Takatori, Shuji Kubota

Proceedings of the 66th IEEE Vehicular Technology Conference, 2007

2006

Frequency-Domain ICI Cancellation with MMSE Equalization for DS-CDMA Downlink.

Kazuaki Takeda, Koichi Ishihara, Fumiyuki Adachi

IEICE Trans. Commun., 2006

Iterative Frequency-Domain Soft Interference Cancellation for Multicode DS- and MC-CDMA Transmissions and Performance Comparison.

Koichi Ishihara, Kazuaki Takeda, Fumiyuki Adachi

IEICE Trans. Commun., 2006

Downlink DS-CDMA Transmission with Joint MMSE Equalization and ICI Cancellation.

Kazuaki Takeda, Koichi Ishihara, Fumiyuki Adachi

Proceedings of the 63rd IEEE Vehicular Technology Conference, 2006

Frequency-domain Soft Interference Cancellation for Multicode CDMA Transmissions.

Koichi Ishihara, Kazuaki Takeda, Fumiyuki Adachi

Proceedings of the 63rd IEEE Vehicular Technology Conference, 2006

2005

Pilot-Assisted Decision Feedback Channel Estimation for STTD in OFDM Mobile Radio.

Koichi Ishihara, Kazuaki Takeda, Fumiyuki Adachi

IEICE Trans. Commun., 2005