Capacity achievable by spectrum sharing with adaptive transmit power control: Based on field measurements. - Hiromasa Fujii; Takahiro Asai; Yukihiko Okumura; Ryoko Kawauchi; Ikuo Hiradate; Hayato Akazawa; Takayuki Sotoyama (CrownCom, 2009)

An adaptive soft clipping method for spectrum sharing OFDMA systems. - Toshihisa Fujiwara; Shigeru Tomisato; Masaharu Hata; Hiromasa Fujii; Takahiro Asai; Yukihiko Okumura (PIMRC, 2009)

Joint Multi-Filter Design for Full-Duplex MU-MIMO Relaying. - Jaturong Sangiamwong; Takahiro Asai; Junichiro Hagiwara; Yukihiko Okumura; Tomoyuki Ohya (VTC Spring, 2009)

Next Mobile Network Architecture. - Masami Yabusaki; Yukihiko Okumura; Motoshi Tamura (ICC, 2010)

Investigation on Cell Selection Methods Associated with Inter-cell Interference Coordination in Heterogeneous Networks for LTE-Advanced Downlink. - Jaturong Sangiamwong; Yuya Saito; Nobuhiko Miki; Tetsushi Abe; Satoshi Nagata; Yukihiko Okumura (EW, 2011)

Investigation on improvement in channel estimation accuracy using data signal muting in downlink coordinated multiple-point transmission and reception in LTE-Advanced. - Yusuke Ohwatari; Yusuke Miki; Tetsushi Abe; Satoshi Nagata; Yukihiko Okumura (WCNC, 2011)

Investigation on Data Signal Muting to Improve Channel Estimation Accuracy in Downlink Coordinated Multiple-Point Transmission in LTE-Advanced. - Yusuke Ohwatari; Nobuhiko Miki; Tetsushi Abe; Satoshi Nagata; Yukihiko Okumura (IEICE Trans. Commun., 2011)

Performance Investigation on Cell Selection Schemes Associated with Downlink Inter-Cell Interference Coordination in Heterogeneous Networks for LTE-Advanced. - Yuya Saito; Jaturong Sangiamwong; Nobuhiko Miki; Satoshi Nagata; Tetsushi Abe; Yukihiko Okumura (IEICE Trans. Commun., 2011)

Investigation on link performance modeling of advanced receiver employing interference rejection combining in system level evaluation for LTE-Advanced downlink. - Yousuke Sano; Yusuke Ohwatari; Nobuhiko Miki; Akihito Morimoto; Yukihiko Okumura (ISWCS, 2012)

Investigation on advanced receiver employing interference rejection combining for space-frequency block code transmit diversity in LTE-Advanced downlink. - Yusuke Ohwatari; Nobuhiko Miki; Yuta Sagae; Yukihiko Okumura (PIMRC, 2012)

Link Performance Modeling of Interference Rejection Combining Receiver in System Level Evaluation for LTE-Advanced Downlink. - Yousuke Sano; Yusuke Ohwatari; Nobuhiko Miki; Akihito Morimoto; Yukihiko Okumura (IEICE Trans. Commun., 2012)

Impact on Inter-Cell Interference of Reference Signal for Interference Rejection Combining Receiver in LTE-Advanced Downlink. - Yousuke Sano; Yusuke Ohwatari; Nobuhiko Miki; Yuta Sagae; Yukihiko Okumura; Yasutaka Ogawa; Takeo Ohgane; Toshihiko Nishimura (IEICE Trans. Commun., 2012)

Performance Evaluation of Reduced Power Inter-cell Interference Coordination for Downlink in LTE-Advanced Heterogeneous Networks. - Akihito Morimoto; Nobuhiko Miki; Yukihiko Okumura (EW, 2013)

Elevation directional channel properties at BS to evaluate 3D beamforming. - Koshiro Kitao; Tetsuro Imai; Kentaro Saito; Yukihiko Okumura (ISPACS, 2013)

Cell identification performance based on hierarchical synchronization channels in dense small cell environment. - Hideyuki Morosa; Hiroki Harada; Akihito Morimoto; Satoshi Nagata; Hiroyuki Ishii; Yukihiko Okumura (SPAWC, 2013)

Investigation on interference rejection combining receiver in heterogeneous networks for LTE-Advanced downlink. - Yusuke Ohwatari; Akihito Morimoto; Nobuhiko Miki; Yukihiko Okumura (SPAWC, 2013)

Investigation on Transmission Power Control Suitable for Heterogeneous Network Employing Cell Range Expansion in LTE-Advanced Uplink. - Akihito Morimoto; Nobuhiko Miki; Hiroyuki Ishii; Daisuke Nishikawa; Yukihiko Okumura (IEICE Trans. Commun., 2013)

Investigation of Inter-Cell Interference Coordination Applying Transmission Power Reduction in Heterogeneous Networks for LTE-Advanced Downlink. - Akihito Morimoto; Nobuhiko Miki; Yukihiko Okumura (IEICE Trans. Commun., 2013)

Performance Evaluation of Interference Rejection Combining Receiver in Heterogeneous Networks for LTE-Advanced Downlink. - Yusuke Ohwatari; Akihito Morimoto; Nobuhiko Miki; Yukihiko Okumura (IEICE Trans. Commun., 2013)

Dynamic Channel Modeling Using Particle Filtering for Wireless MIMO Systems in Urban Environment. - Kentaro Saito; Koshiro Kitao; Tetsuro Imai; Yukihiko Okumura (IEICE Trans. Commun., 2013)

Requirements of power amplifier on super high bit rate massive MIMO OFDM transmission using higher frequency bands. - Jiyun Shen; Satoshi Suyama; Tatsunori Obara; Yukihiko Okumura (GLOBECOM Workshops, 2014)

Evaluation of 30 Gbps super high bit rate mobile communications using channel data in 11 GHz band 24×24 MIMO experiment. - Satoshi Suyama; Jiyun Shen; Hiroshi Suzuki; Kazuhiko Fukawa; Yukihiko Okumura (ICC, 2014)

Performance evaluation for different types of small cells with optimized transmssion power. - Sho Nakazawa; Mitsutoshi Nakamura; Shingo Matsuoka; Kazuaki Takeda 001; Satoshi Suyama; Yukihiko Okumura; Hiroyuki Otsuka (ICCS, 2014)

Joint fixed beamforming and eigenmode precoding for super high bit rate massive MIMO systems using higher frequency bands. - Tatsunori Obara; Satoshi Suyama; Jiyun Shen; Yukihiko Okumura (PIMRC, 2014)

Experimental Analysis of Public Wireless LAN Quality for Moving Users. - Yasufumi Morioka; Yoshifumi Morihiro; Akira Yamada 003; Yukihiko Okumura (VTC Fall, 2014)

Performance Analysis of Fiber-Optic Inband Relaying in the Presence of Self-Interference. - Hiroyuki Otsuka; Naohiro Tanoi; Naoto Ogura; Takahiro Kubo; Takahiro Asai; Yukihiko Okumura (VTC Fall, 2014)

Cluster Power Variation Estimation for MIMO Channel Modeling in Crowded Indoor Environment. - Kentaro Saito; Tetsuro Imai; Koshiro Kitao; Yukihiko Okumura (VTC Fall, 2014)

2 GHz Band MIMO Channel Properties in Urban Small Cell Scenario in Crowded Area. - Kentaro Saito; Tetsuro Imai; Yukihiko Okumura (VTC Fall, 2014)

Investigation on Feedback Channel State Information for Interference Rejection Combining Receiver in LTE-Advanced Downlink. - Yousuke Sano; Yusuke Ohwatari; Yuta Sagae; Akihito Morimoto; Yukihiko Okumura (VTC Spring, 2014)

Study on Characteristics of Human Body Shadowing in High Frequency Bands: Radio Wave Propagation Technology for Future Radio Access and Mobile Optical Networks. - Ngochao Tran; Tetsuro Imai; Yukihiko Okumura (VTC Fall, 2014)

An advanced Wi-Fi data service platform coupled with a cellular network for future wireless access. - Riichi Kudo; Yasushi Takatori; B. Hirantha Sithira Abeysekera; Yasuhiko Inoue; Atsushi Murase; Akira Yamada 003; Hiroto Yasuda; Yukihiko Okumura (IEEE Commun. Mag., 2014)

Investigation on Interference Rejection Combining Receiver for Space-Frequency Block Code Transmit Diversity in LTE-Advanced Downlink. - Yusuke Ohwatari; Nobuhiko Miki; Yuta Sagae; Yukihiko Okumura (IEEE Trans. Veh. Technol., 2014)

Channel estimation for super high bit rate massive MIMO systems using joint processing of analog fixed beamforming and CSI-based precoding. - Tatsunori Obara; Satoshi Suyama; Yukihiko Okumura (CSCN, 2015)

Field Experiments on 5G mmW Radio Access with Beam Tracking in Small Cell Environments. - Yuki Inoue; Yoshihisa Kishiyama; Satoshi Suyama; James Kepler; Mark Cudak; Yukihiko Okumura (GLOBECOM Workshops, 2015)

Performance Evaluation of 44GHz Band Massive MIMO Based on Channel Measurement. - Akinori Taira; Hiroki Iura; Kenji Nakagawa; Shigeru Uchida; Kazuaki Ishioka; Akihiro Okazaki; Satoshi Suyama; Tatsunori Obara; Yukihiko Okumura; Atsushi Okamura (GLOBECOM Workshops, 2015)

Performance and design of SIC receiver for downlink NOMA with open-loop SU-MIMO. - Keisuke Saito; Anass Benjebbour; Yoshihisa Kishiyama; Yukihiko Okumura; Takehiro Nakamura (ICC Workshops, 2015)

Experimental evaluation of downlink transmission and beam tracking performance for 5G mmW radio access in indoor shielded environment. - Yuki Inoue; Yoshihisa Kishiyama; Yukihiko Okumura; James Kepler; Mark Cudak (PIMRC, 2015)

Path loss prediction model for 800 MHz to 37 GHz in NLOS microcell environment. - Koshiro Kitao; Tetsuro Imai; Ngochao Tran; Nobutaka Omaki; Yukihiko Okumura; Minoru Inomata; Motoharu Sasaki; Wataru Yamada (PIMRC, 2015)

Indoor and outdoor experimental trials in 28-GHz band for 5G wireless communication systems. - Tatsunori Obara; Tatsuki Okuyama; Yuuichi Aoki; Satoshi Suyama; Jaekon Lee; Yukihiko Okumura (PIMRC, 2015)

Channel Access Acquisition Mechanism Coupled with Cellular Network for Unlicensed Spectrum. - Riichi Kudo; B. A. Hirantha Sithira Abeysekera; Yasushi Takatori; Takeo Ichikawa; Masato Mizoguchi; Hiroto Yasuda; Akira Yamada 003; Yukihiko Okumura (VTC Spring, 2015)

Field Experiments on Combination of Downlink CoMP and Smart Vertical MIMO in LTE-Advanced. - Daisuke Kurita; Yuki Inoue; Yoshihisa Kishiyama; Yukihiko Okumura (VTC Fall, 2015)

Performance of Fiber-Optic Inband Relaying against Self-Interference in Both Uplink and Downlink. - Sho Nakazawa; Kohei Iwai; Mitsutoshi Nakamura; Takahiro Kubo; Takahiro Asai; Yukihiko Okumura; Hiroyuki Otsuka (VTC Fall, 2015)

A Study on Moving Cell in 5G Cellular System. - Hiroto Yasuda; Akira Kishida; Jiyun Shen; Yoshifumi Morihiro; Yasufumi Morioka; Satoshi Suyama; Akira Yamada 003; Yukihiko Okumura; Takahiro Asai (VTC Fall, 2015)

Experimental Study on Ray Based Spatio-Temporal Channel Characteristics in Indoor Environment. - Koshiro Kitao; Tetsuro Imai; Kentaro Saito; Yukihiko Okumura (IEICE Trans. Commun., 2015)

Joint Processing of Analog Fixed Beamforming and CSI-Based Precoding for Super High Bit Rate Massive MIMO Transmission Using Higher Frequency Bands. - Tatsunori Obara; Satoshi Suyama; Jiyun Shen; Yukihiko Okumura (IEICE Trans. Commun., 2015)

Model for Estimating Effects of Human Body Shadowing in High Frequency Bands. - Ngochao Tran; Tetsuro Imai; Yukihiko Okumura (IEICE Trans. Commun., 2015)

Antenna deployment for 5G ultra high-density distributed antenna system at low SHF bands. - Tatsuki Okuyama; Satoshi Suyama; Jun Mashino; Yukihiko Okumura (CSCN, 2016)

5G multi-antenna technology and experimental trials. - Satoshi Suyama; Jun Mashino; Yoshihisa Kishiyama; Yukihiko Okumura (ICCS, 2016)

Flexible antenna deployment for 5G distributed Massive MIMO in low SHF bands. - Tatsuki Okuyama; Satoshi Suyama; Jun Mashino; Yukihiko Okumura (ICSPCS, 2016)

Adaptive control CRE technique for eICIC in HetNet. - Norihiro Naganuma; Sho Nakazawa; Satoshi Suyama; Yukihiko Okumura; Hiroyuki Otsuka (ICUFN, 2016)

Experiment of 28 GHz Band 5G super wideband transmission using beamforming and beam tracking in high mobility environment. - Tatsunori Obara; Yuki Inoue; Yuuichi Aoki; Satoshi Suyama; Jaekon Lee; Yukihiko Okumura (PIMRC, 2016)

Field experimental evaluation of beamtracking and latency performance for 5G mmWave radio access in outdoor mobile environment. - Shohei Yoshioka; Yuki Inoue; Satoshi Suyama; Yoshihisa Kishiyama; Yukihiko Okumura; James Kepler; Mark Cudak (PIMRC, 2016)

Starved wireless LAN device identifying scheme using beacon signals. - Akiyoshi Inoki; B. Hirantha Sithira Abeysekera; Munehiro Matsui; Takeo Ichikawa; Masato Mizoguchi; Akira Kishida; Akira Yamada 003; Yoshifumi Morihiro; Takahiro Asai; Yukihiko Okumura (WPMC, 2016)

Cluster Power Variation Characteristics for 3GHz-Band MIMO Communication System in a Crowded Indoor Environment. - Kentaro Saito; Tetsuro Imai; Koshiro Kitao; Yukihiko Okumura (IEICE Trans. Commun., 2016)

3D beamforming effect for backhaul link in time-division relaying. - Ryota Nakao; Jun Mashino; Satoshi Suyama; Yukihiko Okumura; Hiroyuki Otsuka (ICUFN, 2017)

Field Experimental Evaluation of Low SHF 5G Radio Access System Employing Higher Rank MIMO. - Yuki Inoue; Shohei Yoshioka; Yoshihisa Kishiyama; Tsuneomi Haruna; Takeshi Tanaka; Armin Splett; Satoshi Suyama; Yukihiko Okumura; Henrik Liljestrom (VTC Spring, 2017)

5G Experimental Trial of 28 GHz Band Super Wideband Transmission Using Beam Tracking in Super High Mobility Environment. - Jun Mashino; Kei Satoh; Satoshi Suyama; Yuki Inoue; Yukihiko Okumura (VTC Spring, 2017)

User Selection and Rank Adaptation for Multi-User Massive MIMO with Hybrid Beamforming. - Hiroyuki Miyazaki; Satoshi Suyama; Tatsuki Okuyama; Jun Mashino; Yukihiko Okumura (VTC Fall, 2017)

Antenna Deployment of 5G Ultra High-Density Distributed Massive MIMO by Low-SHF-Band Indoor and Outdoor Experiments. - Tatsuki Okuyama; Satoshi Suyama; Jun Mashino; Yukihiko Okumura; Kotaro Shiizaki; Chiyoshi Akiyama; Masafumi Tsutsui; Hiroyuki Seki; Morihiko Minowa (VTC Fall, 2017)

Field Experiment of High-Capacity Technologies for 5G Ultra High-Density Distributed Antenna Systems. - Hiroyuki Seki; Masafumi Tsutsui; Morihiko Minowa; Kotaro Shiizaki; Chiyoshi Akiyama; Tatsuki Okuyama; Jun Mashino; Satoshi Suyama; Yukihiko Okumura (VTC Spring, 2017)

DL MU-MIMO Field Trial with 5G Low SHF Band Massive MIMO Antenna. - Kenichiro Yamazaki; Toshifumi Sato; Yasushi Maruta; Tatsuki Okuyama; Jun Mashino; Satoshi Suyama; Yukihiko Okumura (VTC Spring, 2017)

Field Experimental Trials for 5G Mobile Communication System Using 70 GHz-Band. - Yuki Inoue; Shohei Yoshioka; Yoshihisa Kishiyama; James Kepler; Mark Cudak; Satoshi Suyama; Yukihiko Okumura (WCNC Workshops, 2017)

5G massive MIMO with digital beamforming and two-stage channel estimation for low SHF band. - Shohei Yoshioka; Satoshi Suyama; Tatsuki Okuyama; Jun Mashino; Yukihiko Okumura (Wireless Days, 2017)

Experimental evaluation of digital beamforming for 5G multi-site massive MIMO. - Tatsuki Okuyama; Satoshi Suyama; Jun Mashino; Shohei Yoshioka; Yukihiko Okumura; Kenichiro Yamazaki; Daisuke Nose; Yasushi Maruta (WPMC, 2017)

Field experimental evaluation of higher rank MIMO in quad-directional UE antenna configuration for 5G radio access system. - Yuta Takahashi; Yuki Inoue; Shohei Yoshioka; Yoshihisa Kishiyama; Satoshi Suyama; Jun Mashino; Yukihiko Okumura; Tsuneomi Haruna; Takeshi Tanaka; Armin Splett; Henrik Liljestrom (WPMC, 2017)

Digital beamforming algorithm for 5G low-SHF-band massive MIMO with intersite coordination. - Shohei Yoshioka; Satoshi Suyama; Tatsuki Okuyama; Jun Mashino; Yukihiko Okumura (WPMC, 2017)

Throughput Improvement of Mobile Cooperative WLAN Systems with Identifying and Management of Starved APs/UEs for 5G. - Akiyoshi Inoki; Hirantha Abeysekera; Munehiro Matsui; Kenichi Kawamura; Takeo Ichikawa; Yasushi Takatori; Masato Mizoguchi; Akira Kishida; Yoshifumi Morihiro; Takahiro Asai; Yukihiko Okumura (IEICE Trans. Commun., 2017)

Path Loss Model for Outdoor-to-Indoor Corridor Up to 40GHz Band in Microcell Environments. - Minoru Inomata; Motoharu Sasaki; Wataru Yamada; Takeshi Onizawa; Masashi Nakatsugawa; Nobutaka Omaki; Koshiro Kitao; Tetsuro Imai; Yukihiko Okumura (IEICE Trans. Commun., 2017)

Field Experimental Evaluation on 5G Millimeter Wave Radio Access for Mobile Communications. - Yuki Inoue; Shohei Yoshioka; Yoshihisa Kishiyama; Satoshi Suyama; Yukihiko Okumura; James Kepler; Mark Cudak (IEICE Trans. Commun., 2017)

Experimental Trial of 5G Super Wideband Wireless Systems Using Massive MIMO Beamforming and Beam Tracking Control in 28GHz Band. - Tatsunori Obara; Tatsuki Okuyama; Yuki Inoue; Yuuichi Aoki; Satoshi Suyama; Jaekon Lee; Yukihiko Okumura (IEICE Trans. Commun., 2017)

5G Distributed Massive MIMO with Ultra-High Density Antenna Deployment in Low SHF Bands. - Tatsuki Okuyama; Satoshi Suyama; Jun Mashino; Yukihiko Okumura (IEICE Trans. Commun., 2017)

Improving Accuracy of Ray-Tracing Prediction in Non Line-of-Sight (NLOS) Urban Street Cell Environment beyond 6GHz. - Nobutaka Omaki; Tetsuro Imai; Koshiro Kitao; Yukihiko Okumura (IEICE Trans. Commun., 2017)

Cell selection scheme for handover reduction based on moving direction and velocity of UEs for 5G multi-layered radio access networks. - Akira Kishida; Yoshifumi Morihiro; Takahiro Asai; Yukihiko Okumura (ICOIN, 2018)

5G Experimental Trials of 4.5 GHz Band Digital Beamforming in Dense Urban Area. - Tatsuki Okuyama; Satoshi Suyama; Jun Mashino; Yukihiko Okumura; Kohei Izui; Kenichiro Yamazaki (PIMRC, 2018)

5G Downlink Throughput Performance of 28 GHz Band Experimental Trial at 300 km/h. - Yuta Takahashi; Kazushi Muraoka; Jun Mashino; Satoshi Suyama; Yukihiko Okumura (PIMRC, 2018)

Outdoor Experimental Trials of Advanced Downlink NOMA Using Smartphone-Sized Devices. - Anass Benjebbour; Yoshihisa Kishiyama; Yukihiko Okumura; Chien-Hwa Hwang; I-Kang Fu (VTC Spring, 2018)

Video Sending Rate Prediction Based on Communication Logging Database for 5G HetNet. - Takumi Higuchi; Noriyuki Shimizu; Hideki Shingu; Yoshifumi Morihiro; Yukihiko Okumura; Takeshi Miyagoshi; Masaaki Endo; Hiroaki Asano (VTC Spring, 2018)

Experimental Evaluation of Starved AP Identification and Management Schemes in Mobile Cooperative WLAN System toward 5G. - Akiyoshi Inoki; Hirantha Abeysekera; Akira Kishida; Yoshifumi Morihiro; Takahiro Asai; Munehiro Matsui; Kenichi Kawamura; Yukihiko Okumura; Yasushi Takatori (VTC Spring, 2018)

Outdoor DL MU-MIMO and Inter Access Point Coordination Performance of Low-SHF-Band C-RAN Massive MIMO System for 5G. - Yasushi Maruta; Kenichiro Yamazaki; Kohei Izui; Tatsuki Okuyama; Jun Mashino; Satoshi Suyama; Kanada Nakayasu; Toshifumi Sato; Yukihiko Okumura (VTC Spring, 2018)

Indoor Experimental Trial on Hybrid 16-Beam Spatial-Multiplexing for High SHF Wide-Band Massive MIMO in 5G. - Manabu Sakai; Kenji Nakagawa; Hiroki Iura; Naofumi Iwayama; Akihiro Okazaki; Nobuhide Nonaka; Satoshi Suyama; Jun Mashino; Atsushi Okamura; Yukihiko Okumura (VTC Fall, 2018)

Field Experimental DL MU-MIMO Evaluations of Low-SHF-Band C-RAN Massive MIMO System with over 100 Antenna Elements for 5G. - Kenichiro Yamazaki; Kohei Izui; Kanada Nakayasu; Tatsuki Okuyama; Jun Mashino; Satoshi Suyama; Toshifumi Sato; Yukihiko Okumura (VTC Fall, 2018)

Scattering Characteristics of the Human Body in 67-GHz Band. - Ngochao Tran; Tetsuro Imai; Koshiro Kitao; Yukihiko Okumura; Takehiro Nakamura; Hiroshi Tokuda; Takao Miyake; Robin Wang; Zhu Wen; Hajime Kitano; Roger Nichols (IEICE Trans. Commun., 2018)

R&D Activities for 5G Radio Access Technologies Using SHF Bands and Co-Creation of New Services Using 5G. - Yukihiko Okumura (VLSI-DAT, 2019)

Experimental Trials of 5G Ultra High-Density Distributed Antenna Systems. - Shinya Kumagai; Morihiko Minowa; Tatsuki Okuyama; Jun Mashino; Satoshi Suyama; Yukihiko Okumura; Takaharu Kobayashi; Teppei Oyama; Chiyoshi Akiyama; Masafumi Tsutsui; Daisuke Jitsukawa; Takashi Seyama; et al. (VTC Fall, 2019)

5G R&D Activities for High Capacity Technologies with Ultra High-Density Multi-Band and Multi-Access Layered Cells. - Morihiko Minowa; Hiroyuki Seki; Yukihiko Okumura; Satoshi Suyama; Jun Terada; Satoshi Shigematsu; Yasushi Takatori; Hiroaki Asano; Yukio Hirano; Yasushi Yamao; Fumiyuki Adachi; Masataka Nakazawa (VTC Spring, 2019)

Indoor Experimental Trial in High SHF Wide-Band Massive MIMO Hybrid Beamforming. - Nobuhide Nonaka; Kazushi Muraoka; Satoshi Suyama; Jun Mashino; Kenichiro Kamohara; Manabu Sakai; Hiroki Iura; Masayuki Nakazawa; Yukihiko Okumura (VTC Fall, 2019)

5G R&D Achievements for High-Data-Rate and Low-Power-Consumption Radio Access Technologies with Higher-Frequency-Band and Wider-Bandwidth Massive MIMO. - Yukihiko Okumura; Satoshi Suyama; Naoto Ishii; Yasushi Maruta; Akihiro Okazaki; Atsushi Okamura; Jun Terada; Takeshi Onizawa (VTC Spring, 2019)

Uplink Multi-User Massive MIMO Using Gaussian BP in Highly Correlated Actual Environments. - Tatsuki Okuyama; Kazushi Muraoka; Shinsuke Ibi; Takumi Takahashi; Satoshi Suyama; Jun Mashino; Seiichi Sampei; Yukihiko Okumura (VTC Fall, 2019)

Parameter Estimation for Block Diagonalization Based Hybrid Beamforming in Massive MIMO Communications. - Kenta Tsuge; Yuyuan Chang; Kazuhiko Fukawa; Satoshi Suyama; Yukihiko Okumura (VTC Fall, 2019)

Optimal Cell Selection Method for 5G Heterogeneous Network. - Masaaki Yoshino; Hideki Shingu; Hiroaki Asano; Yoshifumi Morihiro; Yukihiko Okumura (VTC Spring, 2019)

Study on Path Identification at 40 GHz Band in NLOS Urban Street Cell Environment. - Koshiro Kitao; Tetsuro Imai; Minoru Inomata; Yukihiko Okumura; Takehiro Nakamura; Kiyoshi Yanagisawa; Taro Eichler; Wilhelm Keusgen (WCNC, 2019)

Two-Step User Selection Algorithm for Multi-User Massive MIMO with Hybrid Beamforming. - Nobuhide Nonaka; Kazushi Muraoka; Satoshi Suyama; Yukihiko Okumura (WPMC, 2019)

Real-Time Video Streaming Based on TFRC Using Communication Logging for 5G HetNet. - Takumi Higuchi; Hideki Shingu; Noriyuki Shimizu; Takeshi Miyagoshi; Hiroaki Asano; Yoshifumi Morihiro; Yukihiko Okumura (IEICE Trans. Commun., 2019)

Radio Propagation Prediction Method Using Point Cloud Data Based on Hybrid of Ray-Tracing and Effective Roughness Model in Urban Environments. - Minoru Inomata; Tetsuro Imai; Koshiro Kitao; Yukihiko Okumura; Motoharu Sasaki; Yasushi Takatori (IEICE Trans. Commun., 2019)

Performance Evaluation of Downlink Multi-User Massive MIMO with Configurable Active Antenna System and Inter Access Point Coordination in Low-SHF-Band. - Yi Jiang; Kenichiro Yamazaki; Toshihiro Hayata; Kohei Izui; Kanada Nakayasu; Toshifumi Sato; Tatsuki Okuyama; Jun Mashino; Satoshi Suyama; Yukihiko Okumura (IEICE Trans. Commun., 2019)

Experimental Study of Large-Scale Coordinated Multi-User MIMO for 5G Ultra High-Density Distributed Antenna Systems. - Takaharu Kobayashi; Masafumi Tsutsui; Takashi Dateki; Hiroyuki Seki; Morihiko Minowa; Chiyoshi Akiyama; Tatsuki Okuyama; Jun Mashino; Satoshi Suyama; Yukihiko Okumura (IEICE Trans. Commun., 2019)

Recent Activities of 5G Experimental Trials on Massive MIMO Technologies and 5G System Trials Toward New Services Creation. - Yukihiko Okumura; Satoshi Suyama; Jun Mashino; Kazushi Muraoka (IEICE Trans. Commun., 2019)

Performance Evaluation of Low Complexity Digital Beamforming Algorithms by Link-Level Simulations and Outdoor Experimental Trials for 5G Low-SHF-Band Massive MIMO. - Tatsuki Okuyama; Satoshi Suyama; Jun Mashino; Kazushi Muraoka; Kohei Izui; Kenichiro Yamazaki; Yukihiko Okumura (IEICE Trans. Commun., 2019)

Field Trial of 28GHz Band 5G Downlink Massive MIMO Employing Beam Tracking in Railway Environment. - Yuta Takahashi; Tatsuki Okuyama; Kazushi Muraoka; Satoshi Suyama; Jun Mashino; Yukihiko Okumura (IEICE Trans. Commun., 2019)

Digital Beamforming Algorithm for 5G Low-SHF Band Massive MIMO. - Shohei Yoshioka; Satoshi Suyama; Tatsuki Okuyama; Jun Mashino; Yukihiko Okumura (IEICE Trans. Commun., 2019)

28 GHz-Band Experimental Trial at 283 km/h Using the Shinkansen for 5G Evolution. - Nobuhide Nonaka; Kazushi Muraoka; Tatsuki Okuyama; Satoshi Suyama; Yukihiko Okumura; Takahiro Asai; Yoshihiro Matsumura (VTC Spring, 2020)

Two Millimeter-Wave Base Station Cooperation Technologies in High-Mobility Environments for 5G Evolution. - Tatsuki Okuyama; Satoshi Suyama; Nobuhide Nonaka; Yukihiko Okumura; Takahiro Asai (VTC Spring, 2020)

Outdoor Experimental Trials of Millimeter-Wave Base Station Cooperation with Digital Beamforming in High-Mobility Environments for 5G Evolution. - Tatsuki Okuyama; Satoshi Suyama; Nobuhide Nonaka; Yukihiko Okumura; Takahiro Asai (VTC Fall, 2020)

Experimental Field Trials on MU-MIMO Transmissions for High SHF Wide-Band Massive MIMO in 5G. - Manabu Sakai; Kenichiro Kamohara; Hiroki Iura; Hiroshi Nishimoto; Kazuaki Ishioka; Yoshitaka Murata; Masayuki Yamamoto; Akihiro Okazaki; Nobuhide Nonaka; Satoshi Suyama; Jun Mashino; Atsushi Okamura; et al. (IEEE Trans. Wirel. Commun., 2020)

28 GHz-Band Experimental Trial Using the Shinkansen in Ultra High-Mobility Environment for 5G Evolution. - Nobuhide Nonaka; Kazushi Muraoka; Tatsuki Okuyama; Satoshi Suyama; Yukihiko Okumura; Takahiro Asai; Yoshihiro Matsumura (IEICE Trans. Commun., 2021)

Two-Step User Selection Algorithm in Multi-User Massive MIMO with Hybrid Beamforming for 5G Evolution. - Nobuhide Nonaka; Satoshi Suyama; Tatsuki Okuyama; Kazushi Muraoka; Yukihiko Okumura (IEICE Trans. Commun., 2021)

Base Station Cooperation Technologies Using 28GHz-Band Digital Beamforming in High-Mobility Environments. - Tatsuki Okuyama; Nobuhide Nonaka; Satoshi Suyama; Yukihiko Okumura; Takahiro Asai (IEICE Trans. Commun., 2021)