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All Technical Committee Conferences (All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| PN | 2022-03-01 15:00 |
Online | Online | [Invited Talk]
Evaluation of the Link Budget Increase using Error-Tolerant TCPs for Optical Communication in Nonlinear Regime on 200G PM-16QAM Real-time Communication Yohei Hasegawa, Hidemi Noguchi, Morihiko Ota, Kazushi Muraoka (NEC Corp.)  PN2021-62 |
We have proposed a concept of large-capacity optical communications with the relaxed error rate constraint. In this talk... [more] | PN2021-62 pp.48-53 |
| AP, RCS (Joint) |
2021-11-11 10:55 |
Nagasaki | NBC-Bekkan (Nagasaki) (Primary: On-site, Secondary: Online) |
A Study on Receive Beamforming for Multi-User Detection with Trainable Gaussian Belief Propagation Takanobu Doi, Jun Shikida, Kazushi Muraoka, Naoto Ishii (NEC), Daichi Shirase, Takumi Takahashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.) RCS2021-159 |
We propose two digital receive beamforming (BF) methods for low-complexity and high-accuracy uplink signal detection via... [more] | RCS2021-159 pp.86-91 |
| RCS, SR, NS, SeMI, RCC (Joint) |
2021-07-16 09:50 |
Online | Online | A study on Negentropy-Aware Deep Unfolding for Coded MIMO Detection via Gaussian Belief Propagation Daichi Shirase, Takumi Takahashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Kazushi Muraoka, Takanobu Doi, Naoto Ishii (NEC), Seiichi Sampei (Osaka Univ.) RCS2021-95 |
[more] | RCS2021-95 pp.86-91 |
| 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 |
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