Yukihiko Okumura

Publication Activity (10 Years)

Years Active: 2009-2021
Publications (10 Years): 75

Top Venues

IEICE Trans. Commun.

VTC Fall

VTC Spring

PIMRC

Publications

Nobuhide Nonaka, Satoshi Suyama, Tatsuki Okuyama, Kazushi Muraoka, Yukihiko Okumura
Two-Step User Selection Algorithm in Multi-User Massive MIMO with Hybrid Beamforming for 5G Evolution. IEICE Trans. Commun. (9) (2021)
Nobuhide Nonaka, Kazushi Muraoka, Tatsuki Okuyama, Satoshi Suyama, Yukihiko Okumura, Takahiro Asai, Yoshihiro Matsumura
28 GHz-Band Experimental Trial Using the Shinkansen in Ultra High-Mobility Environment for 5G Evolution. IEICE Trans. Commun. (9) (2021)
Tatsuki Okuyama, Nobuhide Nonaka, Satoshi Suyama, Yukihiko Okumura, Takahiro Asai
Base Station Cooperation Technologies Using 28GHz-Band Digital Beamforming in High-Mobility Environments. IEICE Trans. Commun. (9) (2021)
Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Yukihiko Okumura, Takahiro Asai
Two Millimeter-Wave Base Station Cooperation Technologies in High-Mobility Environments for 5G Evolution. VTC Spring (2020)
Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Yukihiko Okumura, Takahiro Asai
Outdoor Experimental Trials of Millimeter-Wave Base Station Cooperation with Digital Beamforming in High-Mobility Environments for 5G Evolution. VTC Fall (2020)
Nobuhide Nonaka, Kazushi Muraoka, Tatsuki Okuyama, Satoshi Suyama, Yukihiko Okumura, Takahiro Asai, Yoshihiro Matsumura
28 GHz-Band Experimental Trial at 283 km/h Using the Shinkansen for 5G Evolution. VTC Spring (2020)
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
Experimental Field Trials on MU-MIMO Transmissions for High SHF Wide-Band Massive MIMO in 5G. IEEE Trans. Wirel. Commun. 19 (4) (2020)
Yi Jiang, Kenichiro Yamazaki, Toshihiro Hayata, Kohei Izui, Kanada Nakayasu, Toshifumi Sato, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura
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. (8) (2019)
Takumi Higuchi, Hideki Shingu, Noriyuki Shimizu, Takeshi Miyagoshi, Hiroaki Asano, Yoshifumi Morihiro, Yukihiko Okumura
Real-Time Video Streaming Based on TFRC Using Communication Logging for 5G HetNet. IEICE Trans. Commun. (8) (2019)
Koshiro Kitao, Tetsuro Imai, Minoru Inomata, Yukihiko Okumura, Takehiro Nakamura, Kiyoshi Yanagisawa, Taro Eichler, Wilhelm Keusgen
Study on Path Identification at 40 GHz Band in NLOS Urban Street Cell Environment. WCNC (2019)
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
Experimental Trials of 5G Ultra High-Density Distributed Antenna Systems. VTC Fall (2019)
Morihiko Minowa, Hiroyuki Seki, Yukihiko Okumura, Satoshi Suyama, Jun Terada, Satoshi Shigematsu, Yasushi Takatori, Hiroaki Asano, Yukio Hirano, Yasushi Yamao, Fumiyuki Adachi, Masataka Nakazawa
5G R&D Activities for High Capacity Technologies with Ultra High-Density Multi-Band and Multi-Access Layered Cells. VTC Spring (2019)
Takaharu Kobayashi, Masafumi Tsutsui, Takashi Dateki, Hiroyuki Seki, Morihiko Minowa, Chiyoshi Akiyama, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura
Experimental Study of Large-Scale Coordinated Multi-User MIMO for 5G Ultra High-Density Distributed Antenna Systems. IEICE Trans. Commun. (8) (2019)
Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Kazushi Muraoka, Kohei Izui, Kenichiro Yamazaki, Yukihiko Okumura
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. (8) (2019)
Yuta Takahashi, Tatsuki Okuyama, Kazushi Muraoka, Satoshi Suyama, Jun Mashino, Yukihiko Okumura
Field Trial of 28GHz Band 5G Downlink Massive MIMO Employing Beam Tracking in Railway Environment. IEICE Trans. Commun. (8) (2019)
Nobuhide Nonaka, Kazushi Muraoka, Satoshi Suyama, Yukihiko Okumura
Two-Step User Selection Algorithm for Multi-User Massive MIMO with Hybrid Beamforming. WPMC (2019)
Masaaki Yoshino, Hideki Shingu, Hiroaki Asano, Yoshifumi Morihiro, Yukihiko Okumura
Optimal Cell Selection Method for 5G Heterogeneous Network. VTC Spring (2019)
Nobuhide Nonaka, Kazushi Muraoka, Satoshi Suyama, Jun Mashino, Kenichiro Kamohara, Manabu Sakai, Hiroki Iura, Masayuki Nakazawa, Yukihiko Okumura
Indoor Experimental Trial in High SHF Wide-Band Massive MIMO Hybrid Beamforming. VTC Fall (2019)
Yukihiko Okumura, Satoshi Suyama, Naoto Ishii, Yasushi Maruta, Akihiro Okazaki, Atsushi Okamura, Jun Terada, Takeshi Onizawa
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 (2019)
Shohei Yoshioka, Satoshi Suyama, Tatsuki Okuyama, Jun Mashino, Yukihiko Okumura
Digital Beamforming Algorithm for 5G Low-SHF Band Massive MIMO. IEICE Trans. Commun. (8) (2019)
Kenta Tsuge, Yuyuan Chang, Kazuhiko Fukawa, Satoshi Suyama, Yukihiko Okumura
Parameter Estimation for Block Diagonalization Based Hybrid Beamforming in Massive MIMO Communications. VTC Fall (2019)
Tatsuki Okuyama, Kazushi Muraoka, Shinsuke Ibi, Takumi Takahashi, Satoshi Suyama, Jun Mashino, Seiichi Sampei, Yukihiko Okumura
Uplink Multi-User Massive MIMO Using Gaussian BP in Highly Correlated Actual Environments. VTC Fall (2019)
Yukihiko Okumura, Satoshi Suyama, Jun Mashino, Kazushi Muraoka
Recent Activities of 5G Experimental Trials on Massive MIMO Technologies and 5G System Trials Toward New Services Creation. IEICE Trans. Commun. (8) (2019)
Yukihiko Okumura
R&D Activities for 5G Radio Access Technologies Using SHF Bands and Co-Creation of New Services Using 5G. VLSI-DAT (2019)
Minoru Inomata, Tetsuro Imai, Koshiro Kitao, Yukihiko Okumura, Motoharu Sasaki, Yasushi Takatori
Radio Propagation Prediction Method Using Point Cloud Data Based on Hybrid of Ray-Tracing and Effective Roughness Model in Urban Environments. IEICE Trans. Commun. (1) (2019)
Kenichiro Yamazaki, Kohei Izui, Kanada Nakayasu, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Toshifumi Sato, Yukihiko Okumura
Field Experimental DL MU-MIMO Evaluations of Low-SHF-Band C-RAN Massive MIMO System with over 100 Antenna Elements for 5G. VTC Fall (2018)
Takumi Higuchi, Noriyuki Shimizu, Hideki Shingu, Yoshifumi Morihiro, Yukihiko Okumura, Takeshi Miyagoshi, Masaaki Endo, Hiroaki Asano
Video Sending Rate Prediction Based on Communication Logging Database for 5G HetNet. VTC Spring (2018)
Anass Benjebbour, Yoshihisa Kishiyama, Yukihiko Okumura, Chien-Hwa Hwang, I-Kang Fu
Outdoor Experimental Trials of Advanced Downlink NOMA Using Smartphone-Sized Devices. VTC Spring (2018)
Akiyoshi Inoki, Hirantha Abeysekera, Akira Kishida, Yoshifumi Morihiro, Takahiro Asai, Munehiro Matsui, Kenichi Kawamura, Yukihiko Okumura, Yasushi Takatori
Experimental Evaluation of Starved AP Identification and Management Schemes in Mobile Cooperative WLAN System toward 5G. VTC Spring (2018)
Yasushi Maruta, Kenichiro Yamazaki, Kohei Izui, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Kanada Nakayasu, Toshifumi Sato, Yukihiko Okumura
Outdoor DL MU-MIMO and Inter Access Point Coordination Performance of Low-SHF-Band C-RAN Massive MIMO System for 5G. VTC Spring (2018)
Yuta Takahashi, Kazushi Muraoka, Jun Mashino, Satoshi Suyama, Yukihiko Okumura
5G Downlink Throughput Performance of 28 GHz Band Experimental Trial at 300 km/h. PIMRC (2018)
Manabu Sakai, Kenji Nakagawa, Hiroki Iura, Naofumi Iwayama, Akihiro Okazaki, Nobuhide Nonaka, Satoshi Suyama, Jun Mashino, Atsushi Okamura, Yukihiko Okumura
Indoor Experimental Trial on Hybrid 16-Beam Spatial-Multiplexing for High SHF Wide-Band Massive MIMO in 5G. VTC Fall (2018)
Akira Kishida, Yoshifumi Morihiro, Takahiro Asai, Yukihiko Okumura
Cell selection scheme for handover reduction based on moving direction and velocity of UEs for 5G multi-layered radio access networks. ICOIN (2018)
Ngochao Tran, Tetsuro Imai, Koshiro Kitao, Yukihiko Okumura, Takehiro Nakamura, Hiroshi Tokuda, Takao Miyake, Robin Wang, Zhu Wen, Hajime Kitano, Roger Nichols
Scattering Characteristics of the Human Body in 67-GHz Band. IEICE Trans. Commun. (6) (2018)
Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura, Kohei Izui, Kenichiro Yamazaki
5G Experimental Trials of 4.5 GHz Band Digital Beamforming in Dense Urban Area. PIMRC (2018)
Jun Mashino, Kei Satoh, Satoshi Suyama, Yuki Inoue, Yukihiko Okumura
5G Experimental Trial of 28 GHz Band Super Wideband Transmission Using Beam Tracking in Super High Mobility Environment. VTC Spring (2017)
Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura
5G Distributed Massive MIMO with Ultra-High Density Antenna Deployment in Low SHF Bands. IEICE Trans. Commun. (10) (2017)
Hiroyuki Seki, Masafumi Tsutsui, Morihiko Minowa, Kotaro Shiizaki, Chiyoshi Akiyama, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura
Field Experiment of High-Capacity Technologies for 5G Ultra High-Density Distributed Antenna Systems. VTC Spring (2017)
Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura, Kotaro Shiizaki, Chiyoshi Akiyama, Masafumi Tsutsui, Hiroyuki Seki, Morihiko Minowa
Antenna Deployment of 5G Ultra High-Density Distributed Massive MIMO by Low-SHF-Band Indoor and Outdoor Experiments. VTC Fall (2017)
Akiyoshi Inoki, Hirantha Abeysekera, Munehiro Matsui, Kenichi Kawamura, Takeo Ichikawa, Yasushi Takatori, Masato Mizoguchi, Akira Kishida, Yoshifumi Morihiro, Takahiro Asai, Yukihiko Okumura
Throughput Improvement of Mobile Cooperative WLAN Systems with Identifying and Management of Starved APs/UEs for 5G. IEICE Trans. Commun. (8) (2017)
Minoru Inomata, Motoharu Sasaki, Wataru Yamada, Takeshi Onizawa, Masashi Nakatsugawa, Nobutaka Omaki, Koshiro Kitao, Tetsuro Imai, Yukihiko Okumura
Path Loss Model for Outdoor-to-Indoor Corridor Up to 40GHz Band in Microcell Environments. IEICE Trans. Commun. (2) (2017)
Hiroyuki Miyazaki, Satoshi Suyama, Tatsuki Okuyama, Jun Mashino, Yukihiko Okumura
User Selection and Rank Adaptation for Multi-User Massive MIMO with Hybrid Beamforming. VTC Fall (2017)
Yuta Takahashi, Yuki Inoue, Shohei Yoshioka, Yoshihisa Kishiyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura, Tsuneomi Haruna, Takeshi Tanaka, Armin Splett, Henrik Liljestrom
Field experimental evaluation of higher rank MIMO in quad-directional UE antenna configuration for 5G radio access system. WPMC (2017)
Ryota Nakao, Jun Mashino, Satoshi Suyama, Yukihiko Okumura, Hiroyuki Otsuka
3D beamforming effect for backhaul link in time-division relaying. ICUFN (2017)
Shohei Yoshioka, Satoshi Suyama, Tatsuki Okuyama, Jun Mashino, Yukihiko Okumura
Digital beamforming algorithm for 5G low-SHF-band massive MIMO with intersite coordination. WPMC (2017)
Shohei Yoshioka, Satoshi Suyama, Tatsuki Okuyama, Jun Mashino, Yukihiko Okumura
5G massive MIMO with digital beamforming and two-stage channel estimation for low SHF band. Wireless Days (2017)
Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Shohei Yoshioka, Yukihiko Okumura, Kenichiro Yamazaki, Daisuke Nose, Yasushi Maruta
Experimental evaluation of digital beamforming for 5G multi-site massive MIMO. WPMC (2017)
Nobutaka Omaki, Tetsuro Imai, Koshiro Kitao, Yukihiko Okumura
Improving Accuracy of Ray-Tracing Prediction in Non Line-of-Sight (NLOS) Urban Street Cell Environment beyond 6GHz. IEICE Trans. Commun. (4) (2017)
Tatsunori Obara, Tatsuki Okuyama, Yuki Inoue, Yuuichi Aoki, Satoshi Suyama, Jaekon Lee, Yukihiko Okumura
Experimental Trial of 5G Super Wideband Wireless Systems Using Massive MIMO Beamforming and Beam Tracking Control in 28GHz Band. IEICE Trans. Commun. (8) (2017)
Kenichiro Yamazaki, Toshifumi Sato, Yasushi Maruta, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura
DL MU-MIMO Field Trial with 5G Low SHF Band Massive MIMO Antenna. VTC Spring (2017)
Yuki Inoue, Shohei Yoshioka, Yoshihisa Kishiyama, James Kepler, Mark Cudak, Satoshi Suyama, Yukihiko Okumura
Field Experimental Trials for 5G Mobile Communication System Using 70 GHz-Band. WCNC Workshops (2017)
Yuki Inoue, Shohei Yoshioka, Yoshihisa Kishiyama, Tsuneomi Haruna, Takeshi Tanaka, Armin Splett, Satoshi Suyama, Yukihiko Okumura, Henrik Liljestrom
Field Experimental Evaluation of Low SHF 5G Radio Access System Employing Higher Rank MIMO. VTC Spring (2017)
Yuki Inoue, Shohei Yoshioka, Yoshihisa Kishiyama, Satoshi Suyama, Yukihiko Okumura, James Kepler, Mark Cudak
Field Experimental Evaluation on 5G Millimeter Wave Radio Access for Mobile Communications. IEICE Trans. Commun. (8) (2017)
Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura
Flexible antenna deployment for 5G distributed Massive MIMO in low SHF bands. ICSPCS (2016)
Satoshi Suyama, Jun Mashino, Yoshihisa Kishiyama, Yukihiko Okumura
5G multi-antenna technology and experimental trials. ICCS (2016)
Norihiro Naganuma, Sho Nakazawa, Satoshi Suyama, Yukihiko Okumura, Hiroyuki Otsuka
Adaptive control CRE technique for eICIC in HetNet. ICUFN (2016)
Akiyoshi Inoki, B. Hirantha Sithira Abeysekera, Munehiro Matsui, Takeo Ichikawa, Masato Mizoguchi, Akira Kishida, Akira Yamada, Yoshifumi Morihiro, Takahiro Asai, Yukihiko Okumura
Starved wireless LAN device identifying scheme using beacon signals. WPMC (2016)
Shohei Yoshioka, Yuki Inoue, Satoshi Suyama, Yoshihisa Kishiyama, Yukihiko Okumura, James Kepler, Mark Cudak
Field experimental evaluation of beamtracking and latency performance for 5G mmWave radio access in outdoor mobile environment. PIMRC (2016)
Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura
Antenna deployment for 5G ultra high-density distributed antenna system at low SHF bands. CSCN (2016)
Kentaro Saito, Tetsuro Imai, Koshiro Kitao, Yukihiko Okumura
Cluster Power Variation Characteristics for 3GHz-Band MIMO Communication System in a Crowded Indoor Environment. IEICE Trans. Commun. (5) (2016)
Tatsunori Obara, Yuki Inoue, Yuuichi Aoki, Satoshi Suyama, Jaekon Lee, Yukihiko Okumura
Experiment of 28 GHz Band 5G super wideband transmission using beamforming and beam tracking in high mobility environment. PIMRC (2016)
Yuki Inoue, Yoshihisa Kishiyama, Satoshi Suyama, James Kepler, Mark Cudak, Yukihiko Okumura
Field Experiments on 5G mmW Radio Access with Beam Tracking in Small Cell Environments. GLOBECOM Workshops (2015)
Keisuke Saito, Anass Benjebbour, Yoshihisa Kishiyama, Yukihiko Okumura, Takehiro Nakamura
Performance and design of SIC receiver for downlink NOMA with open-loop SU-MIMO. ICC Workshops (2015)
Tatsunori Obara, Satoshi Suyama, Jiyun Shen, Yukihiko Okumura
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. (8) (2015)
Hiroto Yasuda, Akira Kishida, Jiyun Shen, Yoshifumi Morihiro, Yasufumi Morioka, Satoshi Suyama, Akira Yamada, Yukihiko Okumura, Takahiro Asai
A Study on Moving Cell in 5G Cellular System. VTC Fall (2015)
Yuki Inoue, Yoshihisa Kishiyama, Yukihiko Okumura, James Kepler, Mark Cudak
Experimental evaluation of downlink transmission and beam tracking performance for 5G mmW radio access in indoor shielded environment. PIMRC (2015)
Koshiro Kitao, Tetsuro Imai, Ngochao Tran, Nobutaka Omaki, Yukihiko Okumura, Minoru Inomata, Motoharu Sasaki, Wataru Yamada
Path loss prediction model for 800 MHz to 37 GHz in NLOS microcell environment. PIMRC (2015)
Ngochao Tran, Tetsuro Imai, Yukihiko Okumura
Model for Estimating Effects of Human Body Shadowing in High Frequency Bands. IEICE Trans. Commun. (5) (2015)
Riichi Kudo, B. A. Hirantha Sithira Abeysekera, Yasushi Takatori, Takeo Ichikawa, Masato Mizoguchi, Hiroto Yasuda, Akira Yamada, Yukihiko Okumura
Channel Access Acquisition Mechanism Coupled with Cellular Network for Unlicensed Spectrum. VTC Spring (2015)
Akinori Taira, Hiroki Iura, Kenji Nakagawa, Shigeru Uchida, Kazuaki Ishioka, Akihiro Okazaki, Satoshi Suyama, Tatsunori Obara, Yukihiko Okumura, Atsushi Okamura
Performance Evaluation of 44GHz Band Massive MIMO Based on Channel Measurement. GLOBECOM Workshops (2015)
Daisuke Kurita, Yuki Inoue, Yoshihisa Kishiyama, Yukihiko Okumura
Field Experiments on Combination of Downlink CoMP and Smart Vertical MIMO in LTE-Advanced. VTC Fall (2015)
Sho Nakazawa, Kohei Iwai, Mitsutoshi Nakamura, Takahiro Kubo, Takahiro Asai, Yukihiko Okumura, Hiroyuki Otsuka
Performance of Fiber-Optic Inband Relaying against Self-Interference in Both Uplink and Downlink. VTC Fall (2015)
Tatsunori Obara, Satoshi Suyama, Yukihiko Okumura
Channel estimation for super high bit rate massive MIMO systems using joint processing of analog fixed beamforming and CSI-based precoding. CSCN (2015)
Tatsunori Obara, Tatsuki Okuyama, Yuuichi Aoki, Satoshi Suyama, Jaekon Lee, Yukihiko Okumura
Indoor and outdoor experimental trials in 28-GHz band for 5G wireless communication systems. PIMRC (2015)
Koshiro Kitao, Tetsuro Imai, Kentaro Saito, Yukihiko Okumura
Experimental Study on Ray Based Spatio-Temporal Channel Characteristics in Indoor Environment. IEICE Trans. Commun. (5) (2015)
Yasufumi Morioka, Yoshifumi Morihiro, Akira Yamada, Yukihiko Okumura
Experimental Analysis of Public Wireless LAN Quality for Moving Users. VTC Fall (2014)
Jiyun Shen, Satoshi Suyama, Tatsunori Obara, Yukihiko Okumura
Requirements of power amplifier on super high bit rate massive MIMO OFDM transmission using higher frequency bands. GLOBECOM Workshops (2014)
Riichi Kudo, Yasushi Takatori, B. Hirantha Sithira Abeysekera, Yasuhiko Inoue, Atsushi Murase, Akira Yamada, Hiroto Yasuda, Yukihiko Okumura
An advanced Wi-Fi data service platform coupled with a cellular network for future wireless access. IEEE Commun. Mag. 52 (11) (2014)
Satoshi Suyama, Jiyun Shen, Hiroshi Suzuki, Kazuhiko Fukawa, Yukihiko Okumura
Evaluation of 30 Gbps super high bit rate mobile communications using channel data in 11 GHz band 24×24 MIMO experiment. ICC (2014)
Yusuke Ohwatari, Nobuhiko Miki, Yuta Sagae, Yukihiko Okumura
Investigation on Interference Rejection Combining Receiver for Space-Frequency Block Code Transmit Diversity in LTE-Advanced Downlink. IEEE Trans. Veh. Technol. 63 (1) (2014)
Yousuke Sano, Yusuke Ohwatari, Yuta Sagae, Akihito Morimoto, Yukihiko Okumura
Investigation on Feedback Channel State Information for Interference Rejection Combining Receiver in LTE-Advanced Downlink. VTC Spring (2014)
Kentaro Saito, Tetsuro Imai, Koshiro Kitao, Yukihiko Okumura
Cluster Power Variation Estimation for MIMO Channel Modeling in Crowded Indoor Environment. VTC Fall (2014)
Sho Nakazawa, Mitsutoshi Nakamura, Shingo Matsuoka, Kazuaki Takeda, Satoshi Suyama, Yukihiko Okumura, Hiroyuki Otsuka
Performance evaluation for different types of small cells with optimized transmssion power. ICCS (2014)
Tatsunori Obara, Satoshi Suyama, Jiyun Shen, Yukihiko Okumura
Joint fixed beamforming and eigenmode precoding for super high bit rate massive MIMO systems using higher frequency bands. PIMRC (2014)
Ngochao Tran, Tetsuro Imai, Yukihiko Okumura
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 (2014)
Hiroyuki Otsuka, Naohiro Tanoi, Naoto Ogura, Takahiro Kubo, Takahiro Asai, Yukihiko Okumura
Performance Analysis of Fiber-Optic Inband Relaying in the Presence of Self-Interference. VTC Fall (2014)
Kentaro Saito, Tetsuro Imai, Yukihiko Okumura
2 GHz Band MIMO Channel Properties in Urban Small Cell Scenario in Crowded Area. VTC Fall (2014)
Akihito Morimoto, Nobuhiko Miki, Yukihiko Okumura
Performance Evaluation of Reduced Power Inter-cell Interference Coordination for Downlink in LTE-Advanced Heterogeneous Networks. EW (2013)
Kentaro Saito, Koshiro Kitao, Tetsuro Imai, Yukihiko Okumura
Dynamic Channel Modeling Using Particle Filtering for Wireless MIMO Systems in Urban Environment. IEICE Trans. Commun. (10) (2013)
Yusuke Ohwatari, Akihito Morimoto, Nobuhiko Miki, Yukihiko Okumura
Performance Evaluation of Interference Rejection Combining Receiver in Heterogeneous Networks for LTE-Advanced Downlink. IEICE Trans. Commun. (6) (2013)
Akihito Morimoto, Nobuhiko Miki, Hiroyuki Ishii, Daisuke Nishikawa, Yukihiko Okumura
Investigation on Transmission Power Control Suitable for Heterogeneous Network Employing Cell Range Expansion in LTE-Advanced Uplink. IEICE Trans. Commun. (4) (2013)
Hideyuki Morosa, Hiroki Harada, Akihito Morimoto, Satoshi Nagata, Hiroyuki Ishii, Yukihiko Okumura
Cell identification performance based on hierarchical synchronization channels in dense small cell environment. SPAWC (2013)
Yusuke Ohwatari, Akihito Morimoto, Nobuhiko Miki, Yukihiko Okumura
Investigation on interference rejection combining receiver in heterogeneous networks for LTE-Advanced downlink. SPAWC (2013)
Koshiro Kitao, Tetsuro Imai, Kentaro Saito, Yukihiko Okumura
Elevation directional channel properties at BS to evaluate 3D beamforming. ISPACS (2013)
Akihito Morimoto, Nobuhiko Miki, Yukihiko Okumura
Investigation of Inter-Cell Interference Coordination Applying Transmission Power Reduction in Heterogeneous Networks for LTE-Advanced Downlink. IEICE Trans. Commun. (6) (2013)
Yousuke Sano, Yusuke Ohwatari, Nobuhiko Miki, Akihito Morimoto, Yukihiko Okumura
Investigation on link performance modeling of advanced receiver employing interference rejection combining in system level evaluation for LTE-Advanced downlink. ISWCS (2012)
Yousuke Sano, Yusuke Ohwatari, Nobuhiko Miki, Akihito Morimoto, Yukihiko Okumura
Link Performance Modeling of Interference Rejection Combining Receiver in System Level Evaluation for LTE-Advanced Downlink. IEICE Trans. Commun. (12) (2012)
Yusuke Ohwatari, Nobuhiko Miki, Yuta Sagae, Yukihiko Okumura
Investigation on advanced receiver employing interference rejection combining for space-frequency block code transmit diversity in LTE-Advanced downlink. PIMRC (2012)
Yousuke Sano, Yusuke Ohwatari, Nobuhiko Miki, Yuta Sagae, Yukihiko Okumura, Yasutaka Ogawa, Takeo Ohgane, Toshihiko Nishimura
Impact on Inter-Cell Interference of Reference Signal for Interference Rejection Combining Receiver in LTE-Advanced Downlink. IEICE Trans. Commun. (12) (2012)
Jaturong Sangiamwong, Yuya Saito, Nobuhiko Miki, Tetsushi Abe, Satoshi Nagata, Yukihiko Okumura
Investigation on Cell Selection Methods Associated with Inter-cell Interference Coordination in Heterogeneous Networks for LTE-Advanced Downlink. EW (2011)

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Yukihiko Okumura