Yukihiko Okumura

107 papers B 12Misc 2Journal 33Unranked 60

Year	Rank	Type	Title / Venue / Authors
2021	J	`jnl`	28 GHz-Band Experimental Trial Using the Shinkansen in Ultra High-Mobility Environment for 5G Evolution. IEICE Trans. Commun. Nobuhide Nonaka, Kazushi Muraoka, Tatsuki Okuyama, Satoshi Suyama, Yukihiko Okumura, Takahiro Asai, Yoshihiro Matsumura
2021	J	`jnl`	Base Station Cooperation Technologies Using 28GHz-Band Digital Beamforming in High-Mobility Environments. IEICE Trans. Commun. Tatsuki Okuyama, Nobuhide Nonaka, Satoshi Suyama, Yukihiko Okumura, Takahiro Asai
2021	J	`jnl`	Two-Step User Selection Algorithm in Multi-User Massive MIMO with Hybrid Beamforming for 5G Evolution. IEICE Trans. Commun. Nobuhide Nonaka, Satoshi Suyama, Tatsuki Okuyama, Kazushi Muraoka, Yukihiko Okumura
2020	—	`conf`	28 GHz-Band Experimental Trial at 283 km/h Using the Shinkansen for 5G Evolution. VTC Spring Nobuhide Nonaka, Kazushi Muraoka, Tatsuki Okuyama, Satoshi Suyama, Yukihiko Okumura, Takahiro Asai, Yoshihiro Matsumura
2020	J	`jnl`	Experimental Field Trials on MU-MIMO Transmissions for High SHF Wide-Band Massive MIMO in 5G. IEEE Trans. Wirel. Commun. Manabu Sakai, Kenichiro Kamohara, Hiroki Iura, Hiroshi Nishimoto, Kazuaki Ishioka, Yoshitaka Murata, Masayuki Yamamoto, Akihiro Okazaki, Nobuhide Nonaka, Satoshi Suyama, Jun Mashino, Atsushi Okamura, Yukihiko Okumura
2020	—	`conf`	Outdoor Experimental Trials of Millimeter-Wave Base Station Cooperation with Digital Beamforming in High-Mobility Environments for 5G Evolution. VTC Fall Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Yukihiko Okumura, Takahiro Asai
2020	—	`conf`	Two Millimeter-Wave Base Station Cooperation Technologies in High-Mobility Environments for 5G Evolution. VTC Spring Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Yukihiko Okumura, Takahiro Asai
2019	—	`conf`	5G R&D Achievements for High-Data-Rate and Low-Power-Consumption Radio Access Technologies with Higher-Frequency-Band and Wider-Bandwidth Massive MIMO. VTC Spring Yukihiko Okumura, Satoshi Suyama, Naoto Ishii, Yasushi Maruta, Akihiro Okazaki, Atsushi Okamura, Jun Terada, Takeshi Onizawa
2019	—	`conf`	5G R&D Activities for High Capacity Technologies with Ultra High-Density Multi-Band and Multi-Access Layered Cells. VTC Spring Morihiko Minowa, Hiroyuki Seki, Yukihiko Okumura, Satoshi Suyama, Jun Terada, Satoshi Shigematsu, Yasushi Takatori, Hiroaki Asano, Yukio Hirano, Yasushi Yamao, Fumiyuki Adachi, Masataka Nakazawa
2019	J	`jnl`	Digital Beamforming Algorithm for 5G Low-SHF Band Massive MIMO. IEICE Trans. Commun. Shohei Yoshioka, Satoshi Suyama, Tatsuki Okuyama, Jun Mashino, Yukihiko Okumura
2019	J	`jnl`	Experimental Study of Large-Scale Coordinated Multi-User MIMO for 5G Ultra High-Density Distributed Antenna Systems. IEICE Trans. Commun. Takaharu Kobayashi, Masafumi Tsutsui, Takashi Dateki, Hiroyuki Seki, Morihiko Minowa, Chiyoshi Akiyama, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura
2019	—	`conf`	Experimental Trials of 5G Ultra High-Density Distributed Antenna Systems. VTC Fall Shinya Kumagai, Morihiko Minowa, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura, Takaharu Kobayashi, Teppei Oyama, Chiyoshi Akiyama, Masafumi Tsutsui, Daisuke Jitsukawa, Takashi Seyama, Takashi Dateki, Hiroyuki Seki
2019	J	`jnl`	Field Trial of 28GHz Band 5G Downlink Massive MIMO Employing Beam Tracking in Railway Environment. IEICE Trans. Commun. Yuta Takahashi, Tatsuki Okuyama, Kazushi Muraoka, Satoshi Suyama, Jun Mashino, Yukihiko Okumura
2019	—	`conf`	Indoor Experimental Trial in High SHF Wide-Band Massive MIMO Hybrid Beamforming. VTC Fall Nobuhide Nonaka, Kazushi Muraoka, Satoshi Suyama, Jun Mashino, Kenichiro Kamohara, Manabu Sakai, Hiroki Iura, Masayuki Nakazawa, Yukihiko Okumura
2019	—	`conf`	Optimal Cell Selection Method for 5G Heterogeneous Network. VTC Spring Masaaki Yoshino, Hideki Shingu, Hiroaki Asano, Yoshifumi Morihiro, Yukihiko Okumura
2019	—	`conf`	Parameter Estimation for Block Diagonalization Based Hybrid Beamforming in Massive MIMO Communications. VTC Fall Kenta Tsuge, Yuyuan Chang, Kazuhiko Fukawa, Satoshi Suyama, Yukihiko Okumura
2019	J	`jnl`	Performance Evaluation of Downlink Multi-User Massive MIMO with Configurable Active Antenna System and Inter Access Point Coordination in Low-SHF-Band. IEICE Trans. Commun. Yi Jiang, Kenichiro Yamazaki, Toshihiro Hayata, Kohei Izui, Kanada Nakayasu, Toshifumi Sato, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura
2019	J	`jnl`	Performance Evaluation of Low Complexity Digital Beamforming Algorithms by Link-Level Simulations and Outdoor Experimental Trials for 5G Low-SHF-Band Massive MIMO. IEICE Trans. Commun. Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Kazushi Muraoka, Kohei Izui, Kenichiro Yamazaki, Yukihiko Okumura
2019	—	`conf`	R&D Activities for 5G Radio Access Technologies Using SHF Bands and Co-Creation of New Services Using 5G. VLSI-DAT Yukihiko Okumura
2019	J	`jnl`	Radio Propagation Prediction Method Using Point Cloud Data Based on Hybrid of Ray-Tracing and Effective Roughness Model in Urban Environments. IEICE Trans. Commun. Minoru Inomata, Tetsuro Imai, Koshiro Kitao, Yukihiko Okumura, Motoharu Sasaki, Yasushi Takatori
2019	J	`jnl`	Real-Time Video Streaming Based on TFRC Using Communication Logging for 5G HetNet. IEICE Trans. Commun. Takumi Higuchi, Hideki Shingu, Noriyuki Shimizu, Takeshi Miyagoshi, Hiroaki Asano, Yoshifumi Morihiro, Yukihiko Okumura
2019	J	`jnl`	Recent Activities of 5G Experimental Trials on Massive MIMO Technologies and 5G System Trials Toward New Services Creation. IEICE Trans. Commun. Yukihiko Okumura, Satoshi Suyama, Jun Mashino, Kazushi Muraoka
2019	B	`conf`	Study on Path Identification at 40 GHz Band in NLOS Urban Street Cell Environment. WCNC Koshiro Kitao, Tetsuro Imai, Minoru Inomata, Yukihiko Okumura, Takehiro Nakamura, Kiyoshi Yanagisawa, Taro Eichler, Wilhelm Keusgen
2019	—	`conf`	Two-Step User Selection Algorithm for Multi-User Massive MIMO with Hybrid Beamforming. WPMC Nobuhide Nonaka, Kazushi Muraoka, Satoshi Suyama, Yukihiko Okumura
2019	—	`conf`	Uplink Multi-User Massive MIMO Using Gaussian BP in Highly Correlated Actual Environments. VTC Fall Tatsuki Okuyama, Kazushi Muraoka, Shinsuke Ibi, Takumi Takahashi, Satoshi Suyama, Jun Mashino, Seiichi Sampei, Yukihiko Okumura
2018	B	`conf`	5G Downlink Throughput Performance of 28 GHz Band Experimental Trial at 300 km/h. PIMRC Yuta Takahashi, Kazushi Muraoka, Jun Mashino, Satoshi Suyama, Yukihiko Okumura
2018	B	`conf`	5G Experimental Trials of 4.5 GHz Band Digital Beamforming in Dense Urban Area. PIMRC Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura, Kohei Izui, Kenichiro Yamazaki
2018	—	`conf`	Cell selection scheme for handover reduction based on moving direction and velocity of UEs for 5G multi-layered radio access networks. ICOIN Akira Kishida, Yoshifumi Morihiro, Takahiro Asai, Yukihiko Okumura
2018	—	`conf`	Experimental Evaluation of Starved AP Identification and Management Schemes in Mobile Cooperative WLAN System toward 5G. VTC Spring Akiyoshi Inoki, Hirantha Abeysekera, Akira Kishida, Yoshifumi Morihiro, Takahiro Asai, Munehiro Matsui, Kenichi Kawamura, Yukihiko Okumura, Yasushi Takatori
2018	—	`conf`	Field Experimental DL MU-MIMO Evaluations of Low-SHF-Band C-RAN Massive MIMO System with over 100 Antenna Elements for 5G. VTC Fall Kenichiro Yamazaki, Kohei Izui, Kanada Nakayasu, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Toshifumi Sato, Yukihiko Okumura
2018	—	`conf`	Indoor Experimental Trial on Hybrid 16-Beam Spatial-Multiplexing for High SHF Wide-Band Massive MIMO in 5G. VTC Fall Manabu Sakai, Kenji Nakagawa, Hiroki Iura, Naofumi Iwayama, Akihiro Okazaki, Nobuhide Nonaka, Satoshi Suyama, Jun Mashino, Atsushi Okamura, Yukihiko Okumura
2018	—	`conf`	Outdoor DL MU-MIMO and Inter Access Point Coordination Performance of Low-SHF-Band C-RAN Massive MIMO System for 5G. VTC Spring Yasushi Maruta, Kenichiro Yamazaki, Kohei Izui, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Kanada Nakayasu, Toshifumi Sato, Yukihiko Okumura
2018	—	`conf`	Outdoor Experimental Trials of Advanced Downlink NOMA Using Smartphone-Sized Devices. VTC Spring Anass Benjebbour, Yoshihisa Kishiyama, Yukihiko Okumura, Chien-Hwa Hwang, I-Kang Fu
2018	J	`jnl`	Scattering Characteristics of the Human Body in 67-GHz Band. IEICE Trans. Commun. Ngochao Tran, Tetsuro Imai, Koshiro Kitao, Yukihiko Okumura, Takehiro Nakamura, Hiroshi Tokuda, Takao Miyake, Robin Wang, Zhu Wen, Hajime Kitano, Roger Nichols
2018	—	`conf`	Video Sending Rate Prediction Based on Communication Logging Database for 5G HetNet. VTC Spring Takumi Higuchi, Noriyuki Shimizu, Hideki Shingu, Yoshifumi Morihiro, Yukihiko Okumura, Takeshi Miyagoshi, Masaaki Endo, Hiroaki Asano
2017	—	`conf`	3D beamforming effect for backhaul link in time-division relaying. ICUFN Ryota Nakao, Jun Mashino, Satoshi Suyama, Yukihiko Okumura, Hiroyuki Otsuka
2017	J	`jnl`	5G Distributed Massive MIMO with Ultra-High Density Antenna Deployment in Low SHF Bands. IEICE Trans. Commun. Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura
2017	—	`conf`	5G Experimental Trial of 28 GHz Band Super Wideband Transmission Using Beam Tracking in Super High Mobility Environment. VTC Spring Jun Mashino, Kei Satoh, Satoshi Suyama, Yuki Inoue, Yukihiko Okumura
2017	—	`conf`	5G massive MIMO with digital beamforming and two-stage channel estimation for low SHF band. Wireless Days Shohei Yoshioka, Satoshi Suyama, Tatsuki Okuyama, Jun Mashino, Yukihiko Okumura
2017	—	`conf`	Antenna Deployment of 5G Ultra High-Density Distributed Massive MIMO by Low-SHF-Band Indoor and Outdoor Experiments. VTC Fall Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura, Kotaro Shiizaki, Chiyoshi Akiyama, Masafumi Tsutsui, Hiroyuki Seki, Morihiko Minowa
2017	—	`conf`	DL MU-MIMO Field Trial with 5G Low SHF Band Massive MIMO Antenna. VTC Spring Kenichiro Yamazaki, Toshifumi Sato, Yasushi Maruta, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura
2017	—	`conf`	Digital beamforming algorithm for 5G low-SHF-band massive MIMO with intersite coordination. WPMC Shohei Yoshioka, Satoshi Suyama, Tatsuki Okuyama, Jun Mashino, Yukihiko Okumura
2017	J	`jnl`	Experimental Trial of 5G Super Wideband Wireless Systems Using Massive MIMO Beamforming and Beam Tracking Control in 28GHz Band. IEICE Trans. Commun. Tatsunori Obara, Tatsuki Okuyama, Yuki Inoue, Yuuichi Aoki, Satoshi Suyama, Jaekon Lee, Yukihiko Okumura
2017	—	`conf`	Experimental evaluation of digital beamforming for 5G multi-site massive MIMO. WPMC Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Shohei Yoshioka, Yukihiko Okumura, Kenichiro Yamazaki, Daisuke Nose, Yasushi Maruta
2017	—	`conf`	Field Experiment of High-Capacity Technologies for 5G Ultra High-Density Distributed Antenna Systems. VTC Spring Hiroyuki Seki, Masafumi Tsutsui, Morihiko Minowa, Kotaro Shiizaki, Chiyoshi Akiyama, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura
2017	—	`conf`	Field Experimental Evaluation of Low SHF 5G Radio Access System Employing Higher Rank MIMO. VTC Spring Yuki Inoue, Shohei Yoshioka, Yoshihisa Kishiyama, Tsuneomi Haruna, Takeshi Tanaka, Armin Splett, Satoshi Suyama, Yukihiko Okumura, Henrik Liljestrom
2017	J	`jnl`	Field Experimental Evaluation on 5G Millimeter Wave Radio Access for Mobile Communications. IEICE Trans. Commun. Yuki Inoue, Shohei Yoshioka, Yoshihisa Kishiyama, Satoshi Suyama, Yukihiko Okumura, James Kepler, Mark Cudak
2017	—	`conf`	Field Experimental Trials for 5G Mobile Communication System Using 70 GHz-Band. WCNC Workshops Yuki Inoue, Shohei Yoshioka, Yoshihisa Kishiyama, James Kepler, Mark Cudak, Satoshi Suyama, Yukihiko Okumura
2017	—	`conf`	Field experimental evaluation of higher rank MIMO in quad-directional UE antenna configuration for 5G radio access system. WPMC Yuta Takahashi, Yuki Inoue, Shohei Yoshioka, Yoshihisa Kishiyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura, Tsuneomi Haruna, Takeshi Tanaka, Armin Splett, Henrik Liljestrom
2017	J	`jnl`	Improving Accuracy of Ray-Tracing Prediction in Non Line-of-Sight (NLOS) Urban Street Cell Environment beyond 6GHz. IEICE Trans. Commun. Nobutaka Omaki, Tetsuro Imai, Koshiro Kitao, Yukihiko Okumura
2017	J	`jnl`	Path Loss Model for Outdoor-to-Indoor Corridor Up to 40GHz Band in Microcell Environments. IEICE Trans. Commun. Minoru Inomata, Motoharu Sasaki, Wataru Yamada, Takeshi Onizawa, Masashi Nakatsugawa, Nobutaka Omaki, Koshiro Kitao, Tetsuro Imai, Yukihiko Okumura
2017	J	`jnl`	Throughput Improvement of Mobile Cooperative WLAN Systems with Identifying and Management of Starved APs/UEs for 5G. IEICE Trans. Commun. Akiyoshi Inoki, Hirantha Abeysekera, Munehiro Matsui, Kenichi Kawamura, Takeo Ichikawa, Yasushi Takatori, Masato Mizoguchi, Akira Kishida, Yoshifumi Morihiro, Takahiro Asai, Yukihiko Okumura
2017	—	`conf`	User Selection and Rank Adaptation for Multi-User Massive MIMO with Hybrid Beamforming. VTC Fall Hiroyuki Miyazaki, Satoshi Suyama, Tatsuki Okuyama, Jun Mashino, Yukihiko Okumura
2016	Misc	`conf`	5G multi-antenna technology and experimental trials. ICCS Satoshi Suyama, Jun Mashino, Yoshihisa Kishiyama, Yukihiko Okumura
2016	—	`conf`	Adaptive control CRE technique for eICIC in HetNet. ICUFN Norihiro Naganuma, Sho Nakazawa, Satoshi Suyama, Yukihiko Okumura, Hiroyuki Otsuka
2016	—	`conf`	Antenna deployment for 5G ultra high-density distributed antenna system at low SHF bands. CSCN Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura
2016	J	`jnl`	Cluster Power Variation Characteristics for 3GHz-Band MIMO Communication System in a Crowded Indoor Environment. IEICE Trans. Commun. Kentaro Saito, Tetsuro Imai, Koshiro Kitao, Yukihiko Okumura
2016	B	`conf`	Experiment of 28 GHz Band 5G super wideband transmission using beamforming and beam tracking in high mobility environment. PIMRC Tatsunori Obara, Yuki Inoue, Yuuichi Aoki, Satoshi Suyama, Jaekon Lee, Yukihiko Okumura
2016	B	`conf`	Field experimental evaluation of beamtracking and latency performance for 5G mmWave radio access in outdoor mobile environment. PIMRC Shohei Yoshioka, Yuki Inoue, Satoshi Suyama, Yoshihisa Kishiyama, Yukihiko Okumura, James Kepler, Mark Cudak
2016	—	`conf`	Flexible antenna deployment for 5G distributed Massive MIMO in low SHF bands. ICSPCS Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura
2016	—	`conf`	Starved wireless LAN device identifying scheme using beacon signals. WPMC Akiyoshi Inoki, B. Hirantha Sithira Abeysekera, Munehiro Matsui, Takeo Ichikawa, Masato Mizoguchi, Akira Kishida, Akira Yamada, Yoshifumi Morihiro, Takahiro Asai, Yukihiko Okumura
2015	—	`conf`	A Study on Moving Cell in 5G Cellular System. VTC Fall Hiroto Yasuda, Akira Kishida, Jiyun Shen, Yoshifumi Morihiro, Yasufumi Morioka, Satoshi Suyama, Akira Yamada, Yukihiko Okumura, Takahiro Asai
2015	—	`conf`	Channel Access Acquisition Mechanism Coupled with Cellular Network for Unlicensed Spectrum. VTC Spring Riichi Kudo, B. A. Hirantha Sithira Abeysekera, Yasushi Takatori, Takeo Ichikawa, Masato Mizoguchi, Hiroto Yasuda, Akira Yamada, Yukihiko Okumura
2015	—	`conf`	Channel estimation for super high bit rate massive MIMO systems using joint processing of analog fixed beamforming and CSI-based precoding. CSCN Tatsunori Obara, Satoshi Suyama, Yukihiko Okumura
2015	J	`jnl`	Experimental Study on Ray Based Spatio-Temporal Channel Characteristics in Indoor Environment. IEICE Trans. Commun. Koshiro Kitao, Tetsuro Imai, Kentaro Saito, Yukihiko Okumura
2015	B	`conf`	Experimental evaluation of downlink transmission and beam tracking performance for 5G mmW radio access in indoor shielded environment. PIMRC Yuki Inoue, Yoshihisa Kishiyama, Yukihiko Okumura, James Kepler, Mark Cudak
2015	—	`conf`	Field Experiments on 5G mmW Radio Access with Beam Tracking in Small Cell Environments. GLOBECOM Workshops Yuki Inoue, Yoshihisa Kishiyama, Satoshi Suyama, James Kepler, Mark Cudak, Yukihiko Okumura
2015	—	`conf`	Field Experiments on Combination of Downlink CoMP and Smart Vertical MIMO in LTE-Advanced. VTC Fall Daisuke Kurita, Yuki Inoue, Yoshihisa Kishiyama, Yukihiko Okumura
2015	B	`conf`	Indoor and outdoor experimental trials in 28-GHz band for 5G wireless communication systems. PIMRC Tatsunori Obara, Tatsuki Okuyama, Yuuichi Aoki, Satoshi Suyama, Jaekon Lee, Yukihiko Okumura
2015	J	`jnl`	Joint Processing of Analog Fixed Beamforming and CSI-Based Precoding for Super High Bit Rate Massive MIMO Transmission Using Higher Frequency Bands. IEICE Trans. Commun. Tatsunori Obara, Satoshi Suyama, Jiyun Shen, Yukihiko Okumura
2015	J	`jnl`	Model for Estimating Effects of Human Body Shadowing in High Frequency Bands. IEICE Trans. Commun. Ngochao Tran, Tetsuro Imai, Yukihiko Okumura
2015	B	`conf`	Path loss prediction model for 800 MHz to 37 GHz in NLOS microcell environment. PIMRC Koshiro Kitao, Tetsuro Imai, Ngochao Tran, Nobutaka Omaki, Yukihiko Okumura, Minoru Inomata, Motoharu Sasaki, Wataru Yamada
2015	—	`conf`	Performance Evaluation of 44GHz Band Massive MIMO Based on Channel Measurement. GLOBECOM Workshops Akinori Taira, Hiroki Iura, Kenji Nakagawa, Shigeru Uchida, Kazuaki Ishioka, Akihiro Okazaki, Satoshi Suyama, Tatsunori Obara, Yukihiko Okumura, Atsushi Okamura
2015	—	`conf`	Performance and design of SIC receiver for downlink NOMA with open-loop SU-MIMO. ICC Workshops Keisuke Saito, Anass Benjebbour, Yoshihisa Kishiyama, Yukihiko Okumura, Takehiro Nakamura
2015	—	`conf`	Performance of Fiber-Optic Inband Relaying against Self-Interference in Both Uplink and Downlink. VTC Fall Sho Nakazawa, Kohei Iwai, Mitsutoshi Nakamura, Takahiro Kubo, Takahiro Asai, Yukihiko Okumura, Hiroyuki Otsuka
2014	—	`conf`	2 GHz Band MIMO Channel Properties in Urban Small Cell Scenario in Crowded Area. VTC Fall Kentaro Saito, Tetsuro Imai, Yukihiko Okumura
2014	J	`jnl`	An advanced Wi-Fi data service platform coupled with a cellular network for future wireless access. IEEE Commun. Mag. Riichi Kudo, Yasushi Takatori, B. Hirantha Sithira Abeysekera, Yasuhiko Inoue, Atsushi Murase, Akira Yamada, Hiroto Yasuda, Yukihiko Okumura
2014	—	`conf`	Cluster Power Variation Estimation for MIMO Channel Modeling in Crowded Indoor Environment. VTC Fall Kentaro Saito, Tetsuro Imai, Koshiro Kitao, Yukihiko Okumura
2014	—	`conf`	Evaluation of 30 Gbps super high bit rate mobile communications using channel data in 11 GHz band 24×24 MIMO experiment. ICC Satoshi Suyama, Jiyun Shen, Hiroshi Suzuki, Kazuhiko Fukawa, Yukihiko Okumura
2014	—	`conf`	Experimental Analysis of Public Wireless LAN Quality for Moving Users. VTC Fall Yasufumi Morioka, Yoshifumi Morihiro, Akira Yamada, Yukihiko Okumura
2014	—	`conf`	Investigation on Feedback Channel State Information for Interference Rejection Combining Receiver in LTE-Advanced Downlink. VTC Spring Yousuke Sano, Yusuke Ohwatari, Yuta Sagae, Akihito Morimoto, Yukihiko Okumura
2014	J	`jnl`	Investigation on Interference Rejection Combining Receiver for Space-Frequency Block Code Transmit Diversity in LTE-Advanced Downlink. IEEE Trans. Veh. Technol. Yusuke Ohwatari, Nobuhiko Miki, Yuta Sagae, Yukihiko Okumura
2014	B	`conf`	Joint fixed beamforming and eigenmode precoding for super high bit rate massive MIMO systems using higher frequency bands. PIMRC Tatsunori Obara, Satoshi Suyama, Jiyun Shen, Yukihiko Okumura
2014	—	`conf`	Performance Analysis of Fiber-Optic Inband Relaying in the Presence of Self-Interference. VTC Fall Hiroyuki Otsuka, Naohiro Tanoi, Naoto Ogura, Takahiro Kubo, Takahiro Asai, Yukihiko Okumura
2014	Misc	`conf`	Performance evaluation for different types of small cells with optimized transmssion power. ICCS Sho Nakazawa, Mitsutoshi Nakamura, Shingo Matsuoka, Kazuaki Takeda, Satoshi Suyama, Yukihiko Okumura, Hiroyuki Otsuka
2014	—	`conf`	Requirements of power amplifier on super high bit rate massive MIMO OFDM transmission using higher frequency bands. GLOBECOM Workshops Jiyun Shen, Satoshi Suyama, Tatsunori Obara, Yukihiko Okumura
2014	—	`conf`	Study on Characteristics of Human Body Shadowing in High Frequency Bands: Radio Wave Propagation Technology for Future Radio Access and Mobile Optical Networks. VTC Fall Ngochao Tran, Tetsuro Imai, Yukihiko Okumura
2013	—	`conf`	Cell identification performance based on hierarchical synchronization channels in dense small cell environment. SPAWC Hideyuki Morosa, Hiroki Harada, Akihito Morimoto, Satoshi Nagata, Hiroyuki Ishii, Yukihiko Okumura
2013	J	`jnl`	Dynamic Channel Modeling Using Particle Filtering for Wireless MIMO Systems in Urban Environment. IEICE Trans. Commun. Kentaro Saito, Koshiro Kitao, Tetsuro Imai, Yukihiko Okumura
2013	—	`conf`	Elevation directional channel properties at BS to evaluate 3D beamforming. ISPACS Koshiro Kitao, Tetsuro Imai, Kentaro Saito, Yukihiko Okumura
2013	J	`jnl`	Investigation of Inter-Cell Interference Coordination Applying Transmission Power Reduction in Heterogeneous Networks for LTE-Advanced Downlink. IEICE Trans. Commun. Akihito Morimoto, Nobuhiko Miki, Yukihiko Okumura
2013	J	`jnl`	Investigation on Transmission Power Control Suitable for Heterogeneous Network Employing Cell Range Expansion in LTE-Advanced Uplink. IEICE Trans. Commun. Akihito Morimoto, Nobuhiko Miki, Hiroyuki Ishii, Daisuke Nishikawa, Yukihiko Okumura
2013	—	`conf`	Investigation on interference rejection combining receiver in heterogeneous networks for LTE-Advanced downlink. SPAWC Yusuke Ohwatari, Akihito Morimoto, Nobuhiko Miki, Yukihiko Okumura
2013	J	`jnl`	Performance Evaluation of Interference Rejection Combining Receiver in Heterogeneous Networks for LTE-Advanced Downlink. IEICE Trans. Commun. Yusuke Ohwatari, Akihito Morimoto, Nobuhiko Miki, Yukihiko Okumura
2013	—	`conf`	Performance Evaluation of Reduced Power Inter-cell Interference Coordination for Downlink in LTE-Advanced Heterogeneous Networks. EW Akihito Morimoto, Nobuhiko Miki, Yukihiko Okumura
2012	J	`jnl`	Impact on Inter-Cell Interference of Reference Signal for Interference Rejection Combining Receiver in LTE-Advanced Downlink. IEICE Trans. Commun. Yousuke Sano, Yusuke Ohwatari, Nobuhiko Miki, Yuta Sagae, Yukihiko Okumura, Yasutaka Ogawa, Takeo Ohgane, Toshihiko Nishimura
2012	B	`conf`	Investigation on advanced receiver employing interference rejection combining for space-frequency block code transmit diversity in LTE-Advanced downlink. PIMRC Yusuke Ohwatari, Nobuhiko Miki, Yuta Sagae, Yukihiko Okumura
2012	—	`conf`	Investigation on link performance modeling of advanced receiver employing interference rejection combining in system level evaluation for LTE-Advanced downlink. ISWCS Yousuke Sano, Yusuke Ohwatari, Nobuhiko Miki, Akihito Morimoto, Yukihiko Okumura
2012	J	`jnl`	Link Performance Modeling of Interference Rejection Combining Receiver in System Level Evaluation for LTE-Advanced Downlink. IEICE Trans. Commun. Yousuke Sano, Yusuke Ohwatari, Nobuhiko Miki, Akihito Morimoto, Yukihiko Okumura
2011	—	`conf`	Investigation on Cell Selection Methods Associated with Inter-cell Interference Coordination in Heterogeneous Networks for LTE-Advanced Downlink. EW Jaturong Sangiamwong, Yuya Saito, Nobuhiko Miki, Tetsushi Abe, Satoshi Nagata, Yukihiko Okumura
2011	J	`jnl`	Investigation on Data Signal Muting to Improve Channel Estimation Accuracy in Downlink Coordinated Multiple-Point Transmission in LTE-Advanced. IEICE Trans. Commun. Yusuke Ohwatari, Nobuhiko Miki, Tetsushi Abe, Satoshi Nagata, Yukihiko Okumura
2011	B	`conf`	Investigation on improvement in channel estimation accuracy using data signal muting in downlink coordinated multiple-point transmission and reception in LTE-Advanced. WCNC Yusuke Ohwatari, Yusuke Miki, Tetsushi Abe, Satoshi Nagata, Yukihiko Okumura
2011	J	`jnl`	Performance Investigation on Cell Selection Schemes Associated with Downlink Inter-Cell Interference Coordination in Heterogeneous Networks for LTE-Advanced. IEICE Trans. Commun. Yuya Saito, Jaturong Sangiamwong, Nobuhiko Miki, Satoshi Nagata, Tetsushi Abe, Yukihiko Okumura
2010	—	`conf`	Next Mobile Network Architecture. ICC Masami Yabusaki, Yukihiko Okumura, Motoshi Tamura
2009	B	`conf`	An adaptive soft clipping method for spectrum sharing OFDMA systems. PIMRC Toshihisa Fujiwara, Shigeru Tomisato, Masaharu Hata, Hiromasa Fujii, Takahiro Asai, Yukihiko Okumura
2009	—	`conf`	Capacity achievable by spectrum sharing with adaptive transmit power control: Based on field measurements. CrownCom Hiromasa Fujii, Takahiro Asai, Yukihiko Okumura, Ryoko Kawauchi, Ikuo Hiradate, Hayato Akazawa, Takayuki Sotoyama
2009	—	`conf`	Joint Multi-Filter Design for Full-Duplex MU-MIMO Relaying. VTC Spring Jaturong Sangiamwong, Takahiro Asai, Junichiro Hagiwara, Yukihiko Okumura, Tomoyuki Ohya