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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 41  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
SR, NS, SeMI, RCC, RCS
(Joint)
2020-07-09
13:50
Online Online A Study on Deep Unfolding-aided Gaussian Belief Propagation for Correlated Large MIMO Signal Detection
Daichi Shirase, Takumi Takahashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Kazushi Muraoka, Naoto Ishii (NEC), Seiichi Sampei (Osaka Univ.) RCC2020-6 NS2020-35 RCS2020-69 SR2020-14 SeMI2020-6
 [more] RCC2020-6 NS2020-35 RCS2020-69 SR2020-14 SeMI2020-6
pp.25-30(RCC), pp.25-30(NS), pp.67-72(RCS), pp.31-36(SR), pp.19-24(SeMI)
RCS 2020-06-25
15:45
Online Online A Study on Trainable Gaussian Belief Propagation Using Deep Unfolding for Large MIMO Signal Detection
Daichi Shirase, Takumi Takahashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Kazushi Muraoka, Naoto Ishii (NEC), Seiichi Sampei (Osaka Univ.) RCS2020-41
 [more] RCS2020-41
pp.109-114
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)
2019-12-20
14:55
Tokushima 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 2019-10-25
10:20
Kanagawa Yokosuka Research Park 28-GHz Band 5G Downlink Throughput Enhancement Using Reflectarray with Variable Phase Shifter
Yuta Takahashi (NTT Docomo Inc.), Yuta Takahashi (Iwate Univ.), Junichi Abe, Kazushi Muraoka, Satoshi Suyama, Yuji Aburakawa (NTT Docomo Inc.) RCS2019-194
SHF band (3 to 30 GHz) radio waves, used for fifth-generation (5G) mobile communication systems, has an issue to establi... [more] RCS2019-194
pp.89-94
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
16:50
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
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)
2019-03-08
15:00
Kanagawa YRP Research and Development of Low-SHF-Band Massive Element Antennas Technologies for 5G
Yasushi Maruta, Jun Shikida, Naoto Ishii (NEC), Tatsuki Okuyama, Kazushi Muraoka, Satoshi Suyama, Jun Mashino, Yukihiko Okumura (NTT DOCOMO) RCS2018-329
This paper describes our activities related to massive multi input and multi output (MIMO) for use in 5G radio access ne... [more] RCS2018-329
pp.243-248
RCS, SR, SRW
(Joint)
2019-03-08
15:40
Kanagawa YRP Performance Evaluation in the Outdoor Mobile Environment with Low-SHF-Band Massive Element Antennas for 5G
Daisuke Nose, Tomohiro Kikuma, Yasushi Maruta (NEC), Tatsuki Okuyama, Kazushi Muraoka, Satoshi Suyama, Jun Mashino, Yukihiko Okumura (NTT DOCOMO) RCS2018-330
We pay attention to the technology of Low- Super High Frequency (SHF) -Band Massive Multiple-Input Multiple-Output (MIM... [more] RCS2018-330
pp.249-254
RCS, SR, SRW
(Joint)
2019-03-08
16:05
Kanagawa YRP Performance Evaluation of Inter Access Point Coordinated Scheduling based on the Real Propagation Channel Estimation Data measured by Low-SHF-Band C-RAN Massive MIMO System for 5G
Yuki Kogure, Shinya Nagasawa, Toshihiro Hayata, Tooru Kikuchi (NEC), Tatsuki Okuyama, Kazushi Muraoka, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (NTT DOCOMO) RCS2018-331
We focused on the spatial multiplexing using low super-high-frequency (SHF) band C-RAN massive MIMO System and the Inter... [more] RCS2018-331
pp.255-259
RCS, SR, SRW
(Joint)
2019-03-08
16:55
Kanagawa YRP Indoor Experimental Trial on SU-MIMO Transmission for High SHF Wide-band Massive MIMO in 5G
nobuhide nonaka, kazushi muraoka, satoshi suyama, jun mashino (DOCOMO), kenji nakagawa, kenichiro kamohara, manabu sakai, yoshitaka murata, hiroki iura (Mitsubishi), yukihiko okumura (DOCOMO) RCS2018-333
The fifth-generation (5G) mobile communication system will introduce Massive MIMO technology at higher frequency bands w... [more] RCS2018-333
pp.267-271
RCS, AP
(Joint)
2018-11-22
15:30
Okinawa Okinawa Industry Support Center Low Complexity User Selection Algorithm for High SHF Band Multi-User Massive MIMO Using Hybrid Beamforming
Nobuhide Nonaka, Kazushi Muraoka, Satosi Suyama, Jun Mashino, Yukihiko Okumura (NTT DOCOMO) RCS2018-214
The 5th Generation (5G) radio access network will introduce Massive MIMO technology at higher frequency bands with wider... [more] RCS2018-214
pp.205-210
RCS, AP
(Joint)
2018-11-22
15:50
Okinawa Okinawa Industry Support Center Performance Evaluation of Low-SHF-Band Digital Beamforming in High-Mobility Experimental Trial
Tatsuki Okuyama, Kazushi Muraoka (NTT DOCOMO), Daisuke Nose, Tomohiro Kikuma, Yasushi Maruta (NEC), Satoshi Suyama, Jun Mashino, Yukihiko Okumura (NTT DOCOMO) RCS2018-215
The fifth-generation (5G) mobile communication system utilizes Massive MIMO using many number of antenna elements in hig... [more] RCS2018-215
pp.211-216
SR, RCS
(Joint)
(2nd)
2018-10-31
08:30
Overseas Mandarin Hotel, Bangkok, Thailand [Invited Talk] R&D Activities for 5G in IEICE Technical Committee on Radio Communication Systems in FY2017 -- Multi-Antenna Technologies and Advanced Modulation/Multiple Access Schemes --
Eisuke Fukuda (Fujitsu Labs.), Hidekazu Murata (Kyoto Univ.), Tomoaki Ohtsuki, Yukitoshi Sanada (Keio Univ.), Satoshi Suyama (NTT DOCOMO), Fumiaki Maehara (Waseda Univ.), Tomoya Tandai (Toshiba), Toshihiko Nishimura (Hokkaido Univ.), Tetsuya Yamamoto (Panasonic), Koichi Ishihara (NTT), Kazushi Muraoka (NTT DOCOMO), Shinsuke Ibi (Osaka Univ.), Hiroshi Nishimoto (Mitsubishi Electric)
 [more]
RCS 2018-10-18
14:30
Tokyo Kikai-Shinko-Kaikan Bldg. [Invited Lecture] DOCOMO's 5G Trial for 5G Enhancement
Satoshi Suyama, Jun Mashino, Kazushi Muraoka, Yoshihisa Kishiyama, Yukihiko Okumura (NTT DOCOMO) RCS2018-160
In order to cope with recent growth of mobile data traffic and emerging of various services, world-wide system trials fo... [more] RCS2018-160
pp.57-59
RCS 2018-10-18
15:20
Tokyo Kikai-Shinko-Kaikan Bldg. [Invited Lecture] Indoor DL MU-MIMO Characteristics with 5G Low SHF band Massive MIMO Antenna
Yasushi Maruta, Daisuke Nose, Toshihiro Hayata, Yi Jiang, Tomohiro Kikuma, Kenichiro Yamazaki, Toshifumi Sato (NEC), Tatsuki Okuyama, Kazushi Muraoka, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (NTT DOCOMO) RCS2018-162
To achieve capacity enhancement and low power consumption for 5G, Massive multi input and multi output (MIMO) has drawn ... [more] RCS2018-162
p.67
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