IEICE Trans

Tatsuki OKUYAMA

A Study on Extreme Wideband 6G Radio Access Technologies for Achieving 100Gbps Data Rate in Higher Frequency Bands Satoshi SUYAMA Tatsuki OKUYAMA Yoshihisa KISHIYAMA Satoshi NAGATA Takahiro ASAI
Publication: Publication Date: 2021/09/01 Vol. E104-B No. 9 pp. 992-999 Type of Manuscript: INVITED PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G Evolution and Beyond) Category: Keyword: sixth generation mobile communication system, radio access technology, millimeter wave, terahertz wave, extreme high data rate,
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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
Publication: Publication Date: 2021/09/01 Vol. E104-B No. 9 pp. 1000-1008 Type of Manuscript: Special Section PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G Evolution and Beyond) Category: Keyword: 5G evolution, massive MIMO, ultra high-mobility, high speed train, 28GHz band,
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Base Station Cooperation Technologies Using 28GHz-Band Digital Beamforming in High-Mobility Environments Tatsuki OKUYAMA Nobuhide NONAKA Satoshi SUYAMA Yukihiko OKUMURA Takahiro ASAI
Publication: Publication Date: 2021/09/01 Vol. E104-B No. 9 pp. 1009-1016 Type of Manuscript: Special Section PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G Evolution and Beyond) Category: Keyword: 5G evolution, millimeter-wave, high-mobility environment, digital BF, BS cooperation technology,
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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
Publication: Publication Date: 2021/09/01 Vol. E104-B No. 9 pp. 1089-1096 Type of Manuscript: Special Section PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G Evolution and Beyond) Category: Keyword: 5G, massive-MIMO, multi-user MIMO, hybrid beamforming, low-complexity,
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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
Publication: Publication Date: 2019/08/01 Vol. E102-B No. 8 pp. 1411-1417 Type of Manuscript: Special Section PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G and Beyond) Category: Keyword: 5G, high mobility, massive MIMO, beamforming, beam tracking,
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Digital Beamforming Algorithm for 5G Low-SHF Band Massive MIMO Shohei YOSHIOKA Satoshi SUYAMA Tatsuki OKUYAMA Jun MASHINO Yukihiko OKUMURA
Publication: Publication Date: 2019/08/01 Vol. E102-B No. 8 pp. 1371-1381 Type of Manuscript: Special Section PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G and Beyond) Category: Keyword: 5G, low-SHF band, massive MIMO, multi-user MIMO, fully-digital beamforming, intersite coordination,
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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
Publication: Publication Date: 2019/08/01 Vol. E102-B No. 8 pp. 1382-1389 Type of Manuscript: Special Section PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G and Beyond) Category: Keyword: 5G, Massive MIMO, digital beamforming, outdoor experimental trials, low SHF bands,
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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
Publication: Publication Date: 2019/08/01 Vol. E102-B No. 8 pp. 1390-1400 Type of Manuscript: Special Section PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G and Beyond) Category: Keyword: 5G, cell densification, distributed antenna system, coordinated multi-user MIMO, field experiment,
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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
Publication: Publication Date: 2019/08/01 Vol. E102-B No. 8 pp. 1401-1410 Type of Manuscript: Special Section PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G and Beyond) Category: Keyword: 5G, Massive MIMO, low-SHF-band, MU-MIMO, beamforming, C-RAN, CB, CoMP,
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5G Distributed Massive MIMO with Ultra-High Density Antenna Deployment in Low SHF Bands Tatsuki OKUYAMA Satoshi SUYAMA Jun MASHINO Yukihiko OKUMURA
Publication: Publication Date: 2017/10/01 Vol. E100-B No. 10 pp. 1921-1927 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: 5G, ultra-high density, distributed massive MIMO, virtual cell, flexible antenna deployment, low SHF bands,
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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
Publication: Publication Date: 2017/08/01 Vol. E100-B No. 8 pp. 1256-1268 Type of Manuscript: Special Section PAPER (Special Section on Radio Access Technologies for 5G Mobile Communications System) Category: Wireless Communication Technologies Keyword: 5G, higher frequency bands, massive MIMO, beamforming, spatial multiplexing, beam tracking,
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