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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 231  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS 2020-06-26
14:30
Online Online 5G Evolution Experimental Trial on Base Station Cooperation Technologies using 28GHz-Band Digital BF High-Mobility Environments
Tatsuki Okuyama, Nobuhide Nonaka, Satoshi Suyama, Yukihiko Okumura, Takahiro Asai (NTT DOCOMO) RCS2020-48
 [more] RCS2020-48
pp.151-156
RCS 2020-06-26
14:55
Online Online Guaranteed Mobile Communications Using Massive MIMO with Hybrid Beamforming for 5G Evolution
Nobuhide Nonaka, Tatsuki Okuyama, Satoshi Suyama, Yukihiko Okumura, Takahiro Asai (NTT DOCOMO) RCS2020-49
 [more] RCS2020-49
pp.157-162
RCS, SR, SRW
(Joint)
2020-03-04
12:35
Tokyo Tokyo Institute of Technology [Technology Exhibit] DOCOMO's Activities Looking to 5G Evolution and 6G
Tatsuki Okuyama, Daisuke Kitayama, Nobuhide Nonaka, Satoshi Suyama, Yoshihisa Kishiyama, Yukihiko Okumura, Takahiro Asai (NTT DOCOMO) RCS2019-330 SR2019-114 SRW2019-60
(To be available after the conference date) [more] RCS2019-330 SR2019-114 SRW2019-60
p.55(RCS), p.7(SR), p.7(SRW)
RCS, SR, SRW
(Joint)
2020-03-06
09:00
Tokyo Tokyo Institute of Technology Millimeter-Wave Base Station Cooperation Technologies in High-Mobility Environments
Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Yukihiko Okumura, Takahiro Asai (NTT DOCOMO) RCS2019-383
Commercial services in 5G have already started all over the world. The initial 5G introduces analog beamforming (BF) by ... [more] RCS2019-383
pp.323-328
AP, WPT
(Joint)
2020-01-24
10:15
Kagawa Sunport Hall Takamatsu [Invited Lecture] Vehicle Penetration Loss Characteristics for the shinkansen from 2GHz to 28GHz Bands
Minoru Inomata, Tetsuro Imai, Kazushi Muraoka, Nobuhide Nonaka, Satoshi Suyama, Koshiro Kitao, Yukihiko Okumura, Takahiro Asai (NTT DOCOMO, INC), Yoshihiro Matsumura (Central Japan Railway Company) AP2019-168
Mobile telephone operators around the world are now working hard to introduce 5G services. With 5G, 3.7, 4.5, 28 GHz ban... [more] AP2019-168
pp.99-103
NS, RCS
(Joint)
2019-12-19
15:15
Tokushima Memorial Hall of Alumni(Engineering), Tokushima Univ. [Invited Lecture] Radio Access Network Exploiting Higher Frequency Bands for 5G Evolution and Beyond
Satoshi Suyama, Tatsuki Okuyama, Nobuhide Nonaka, Takahiro Asai, Yukihiko Okumura (NTT DOCOMO) NS2019-145 RCS2019-248
A commercial service in fifth-generation (5G) mobile communication system will finally start from spring in 2020 by usin... [more] NS2019-145 RCS2019-248
p.61
NS, RCS
(Joint)
2019-12-20
14:55
Tokushima Memorial Hall of Alumni(Engineering), Tokushima Univ. 28GHz Band 5G Experimental Trial in High Mobility Environment Using the Shinkansen
Nopbuhide Nonaka, Kazushi Muraoka, Tatsuki Okuyama, Satoshi Suyama, Yukihiko Okumura, Takahiro Asai (NTT DOCOMO), Yoshihiro Matsumura (JR Central) RCS2019-264
Commercial services in fifth-generation (5G) mobile communication system will start by using 3.7 GHz, 4.5 GHz, and 28 GH... [more] RCS2019-264
pp.145-150
AP, RCS
(Joint)
2019-11-20
11:20
Saga Saga Univ. [Encouragement Talk] Low-Complexity User Selection Algorithm for High SHF-Band Multiuser Massive MIMO Using Hybrid Beamforming
Nobuhide Nonaka, Kazushi Muraoka, Satoshi Suyama, Jun Mashino, Yukihiko Okumura (NTT DOCOMO) RCS2019-205
The 5th Generation (5G) radio access network will introduce Massive MIMO technology at higher frequency bands with wider... [more] RCS2019-205
pp.13-18
RCS, SAT
(Joint)
2019-08-23
09:55
Aichi Nagoya University Outdoor Experimental Trials on Multi-User MIMO Transmission for High SHF Wide-band Massive MIMO in 5G
Manabu Sakai, Kenichiro Kamohara, Hiroki Iura, Kazuaki Ishioka, Masayuki Nakazawa, Akihiro Okazaki (MELCO), Nobuhide Nonaka, Satoshi Suyama, Jun Mashino (DOCOMO), Atsushi Okamura (MELCO), Yukihiko Okumura (DOCOMO) RCS2019-162
This paper reports outdoor experimental trial results of multi-user massive multiple-input multiple-output (MIMO) with 5... [more] RCS2019-162
pp.85-90
SeMI, RCS, NS, SR, RCC
(Joint)
2019-07-11
10:00
Osaka I-Site Nanba(Osaka) Performance Evaluation of Downlink Multi-user MIMO with Moving User Equipment using Low-SHF-Band C-RAN Massive MIMO System
Jiang Yi, Kohei Izui, Kenichiro Yamazaki (NEC), Tatsuki Okuyama, Kazushi Muraoka, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (NTT DOCOMO, INC.) RCS2019-111
In order to tackle rapid increase of data traffic and diversification of mobile service, 5G wireless access system intro... [more] RCS2019-111
pp.57-62
RCS 2019-06-21
16:25
Okinawa Miyakojima Hirara Port Terminal Building Experimental Study of High-Capacity Technologies for 5G Ultra High-Density Distributed Antenna Systems -- Verification of coordinated radio resource scheduling algorithm in up to 32 multi-stream transmission --
Takaharu Kobayashi, Shinya Kumagai, Masafumi Tsutsui, Chiyoshi Akiyama, Takashi Dateki, Hiroyuki Seki, Morihiko Minowa (Fujitsu), Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (DOCOMO) RCS2019-99
In 5G mobile communication systems, an effective high-capacity technology is expected by using high-density small cells.... [more] RCS2019-99
pp.365-370
RCS 2019-06-21
16:50
Okinawa Miyakojima Hirara Port Terminal Building Indoor Experimental Trial on MU-MIMO Transmission for High SHF Wide-band Massive MIMO in 5G
Nobuhide Nonaka, Kazushi Muraoka, Satoshi Suyama, Jun Mashino (NTT DOCOMO), Kenichirou Kamohara, Manabu Sakai, Kuniyuki Suzuki, Hiroki Iura (Mitsubishi Electric), Yukihiko Okumura (NTT DOCOMO) RCS2019-100
 [more] RCS2019-100
pp.371-376
RCS 2019-04-18
10:55
Hokkaido Noboribetsu Grand Hotel Performance Evaluation of Intersite Coordination Scheme under High Speed Transportation Environment
Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura (DOCOMO) RCS2019-4
 [more] RCS2019-4
pp.17-22
RCS 2019-04-18
11:20
Hokkaido Noboribetsu Grand Hotel 28 GHz-Band Experimental Trial of Downlink Massive MIMO in Urban Railway Environment
Kazushi Muraoka, Nobuhide Nonaka, Yuta Takahashi, Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (NTT DOCOMO) RCS2019-5
Field trials of the fifth-generation (5G) mobile communication system using 28 GHz band at which 400 MHz band will be av... [more] RCS2019-5
pp.23-28
RCS 2019-04-18
11:45
Hokkaido Noboribetsu Grand Hotel Experimental evaluation of wireless LAN with distributed smart antenna system on a train
Koichi Ishihara, Masayoshi Nabeshima, Takafumi Hayashi, Yasushi Takatori (NTT), Kazushi Muraoka, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (NTT DOCOMO) RCS2019-6
We have proposed a distributed smart antenna system (D-SAS) for wireless LAN, which suppresses the interference among OB... [more] RCS2019-6
pp.29-34
RCS, SR, SRW
(Joint)
2019-03-07
12:25
Kanagawa YRP [Technology Exhibit] DOCOMO's Activities in 5G System Trial in Fiscal Year 2018
Nobuhide Nonaka, Tatsuki Okuyama, Yuta Takahashi, Kazushi Muraoka, Noriaki Minamida, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (NTT DOCOMO) RCS2018-308 SR2018-129 SRW2018-59
Standardization, research, and development activities are conducted for the fifth-generation (5G) mobile communication s... [more] RCS2018-308 SR2018-129 SRW2018-59
p.145(RCS), p.57(SR), p.25(SRW)
RCS, SR, SRW
(Joint)
2019-03-07
12:25
Kanagawa YRP [Technology Exhibit] Wireless High Quality Video Transmission in 5G Network and its Trials
Hideki Shingu, Takumi Higuchi, Yoshino Masaaki, Tetsuro Morimoto, Sojiro Norita, Hiroaki Asano (Panasonic), Yoshifumi Morihiro, Satoshi Suyama, Yukihiko Okumura (NTT DoCoMo) RCS2018-309 SR2018-130 SRW2018-60
In efforts for realizing ultra-large capacity of the 5th generation mobile communication system (5G), the authors studie... [more] RCS2018-309 SR2018-130 SRW2018-60
pp.147-148(RCS), pp.59-60(SR), pp.27-28(SRW)
RCS, SR, SRW
(Joint)
2019-03-07
09:25
Kanagawa YRP Parameter Estimation for Block Diagonalization based Beamforming in Analog-Digital-Hybrid Massive MIMO Systems
Kenta Tsuge, Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech), Satoshi Suyama, Yukihiko Okumura (NTT DOCOMO) RCS2018-312
For massive MIMO systems to be employed in the 5th generation mobile communications (5G), hybrid beamforming (HB), which... [more] RCS2018-312
pp.157-162
RCS, SR, SRW
(Joint)
2019-03-08
10:30
Kanagawa YRP 5G R&D Activities for High Capacity Technologies with Ultra High-Density Multi-Band and Multi-Access Layered Cells
Morihiko Minowa, Hiroyuki Seki (Fujitsu), Yukihiko Okumura, Satoshi Suyama (NTT DOCOMO), Jun Terada, Satoshi Shigematsu, Yasushi Takatori (NTT), Hiroaki Asano (Panasonic), Yukio Hirano (Mitsubishi Electric), Yasushi Yamao (UEC), Fumiyuki Adachi, Masataka Nakazawa (Tohoku Univ.) RCS2018-323
In this paper, we make a summary report of our 5G R&D activities for “High Capacity Technologies with Ultra High-Density... [more] RCS2018-323
pp.207-212
RCS, SR, SRW
(Joint)
2019-03-08
10:55
Kanagawa YRP 5G R&D Activities for High Data Rate and Low-Power-Consumption Radio Access Technologies with Higher-Frequency-Band and Wider-Bandwidth Massive MIMO
Yukihiko Okumura, Satoshi Suyama (NTT DOCOMO), Naoto Ishii, Yasushi Maruta (NEC), Akihiro Okazaki, Atsushi Okamura (Mitsubishi Electric), Jun Terada, Takeshi Onizawa (NTT) RCS2018-324
 [more] RCS2018-324
pp.213-218
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