Tatsuki Okuyama

37 papers B 3Journal 11Unranked 23
YearRankTypeTitle / Venue / Authors
2022 — conf
Evaluation of Indoor Area Improvement in the High Frequency Band Using Metasurface Lenses, FSS Technology and Relay Stations.
VTC Spring
Jun Tsuboi, Takeshi Motegi, Osamu Kagaya, Daisuke Kitayama, Kensuke Miyachi, Tatsuki Okuyama, Satoshi Suyama, Takahiro Asai
2022 — conf
Experimental Trial aboard Shinkansen Test Train Running at 360 km/h for 5G Evolution.
VTC Spring
Nobuhide Nonaka, Satoshi Suyama, Tatsuki Okuyama, Yuto Hama, Daisuke Kitayama, Takahiro Asai, Shoji Itoh, Anders Carlsson, Johan Furuskog, Magnus Wikström, Qiang Zhang, Kenichiro Kamohara, Fumitoshi Abe, Reiji Ishima
2022 — conf
Outdoor Experimental Trials on Deployments of Multiple Base Station Antennas for 28 GHz-Band Cooperated Digital Beamforming.
VTC Spring
Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai
2022 — conf
Recent Studies on Massive MIMO Technologies for 5G Evolution and 6G.
RWS
Satoshi Suyama, Tatsuki Okuyama, Nobuhide Nonaka, Takahiro Asai
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
A Study on Extreme Wideband 6G Radio Access Technologies for Achieving 100Gbps Data Rate in Higher Frequency Bands.
IEICE Trans. Commun.
Satoshi Suyama, Tatsuki Okuyama, Yoshihisa Kishiyama, Satoshi Nagata, Takahiro Asai
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 — conf
Millimeter-Wave Base Station Cooperation Technologies for High-Mobility Environments.
APWCS
Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai
2021 — conf
Outdoor Experimental Trials of 28 GHz Band Base Station Cooperation in High-Mobility Environment of Multiple Mobile Stations.
VTC Fall
Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, 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 — 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 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 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
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 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
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
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
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 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
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 — 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 — conf
Flexible antenna deployment for 5G distributed Massive MIMO in low SHF bands.
ICSPCS
Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, 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
2013 — conf
Delay properties in non-orthogonal spectrum sharing with adaptively rate controlled selfish dynamic spectrum control.
ICSPCS
Tatsuki Okuyama, Shinsuke Ibi, Seiichi Sampei
2012 B conf
Autonomous grouping scheme for selfish DSC introduced spectrum sharing in asynchronous transmit timing conditions.
PIMRC
Tatsuki Okuyama, Shinsuke Ibi, Seiichi Sampei