Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
RCS, SR, SRW (Joint) |
2024-03-15 13:50 |
Tokyo |
The University of Tokyo (Hongo Campus), and online (Tokyo, Online) (Primary: On-site, Secondary: Online) |
Time-Varying Channel Prediction Considering Angle-of-Arrival Variation for Hybrid Massive MIMO Communications Yuki Ono, Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech), Satoshi Suyama, Takahiro Asai (NTT DOCOMO) RCS2023-287 |
For 5G massive MIMO systems, hybrid beamforming (HB), which is composed of analog beamforming (AB) and digital beamformi... [more] |
RCS2023-287 pp.146-151 |
RCS, SR, SRW (Joint) |
2023-03-03 16:15 |
Tokyo |
Tokyo Institute of Technology, and Online (Tokyo, Online) (Primary: On-site, Secondary: Online) |
Time-Varying Channel Prediction for Pilot Contamination Alleviation in Hybrid Massive MIMO Communications Yuki Ono, Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech), Satoshi Suyama, Takahiro Asai (NTT DOCOMO) RCS2022-296 |
[more] |
RCS2022-296 pp.255-260 |
AP |
2022-05-20 13:50 |
Hyogo |
Kobe Port Oasis (Hyogo, Online) (Primary: On-site, Secondary: Online) |
Radio propagation studies for 5G Evolution & 6G Koshiro Kitao, Satoshi Suyama, Mitsuki Nakamura, Takahiro Tomie, Takahiro Asai (NTT DOCOMO) AP2022-28 |
[more] |
AP2022-28 pp.95-100 |
RCS |
2022-04-21 12:50 |
Osaka |
Osaka University, and online (Osaka, Online) (Primary: On-site, Secondary: Online) |
[Invited Talk]
DOCOMO's Recent Activities on 5G Evolution & 6G Satoshi Suyama, Yoshihisa Kishiyama, Takahiro Asai (NTT DOCOMO) RCS2022-3 |
Towards further enhancement of 5G, so-called 5G evolution and Beyond 5G/6G that aims to be realized in almost 2030, a va... [more] |
RCS2022-3 p.11 |
RCS, SR, SRW (Joint) |
2022-03-03 09:30 |
Online |
Online (Online) |
Channel Estimation Scheme Robust against Pilot Contamination for Hybrid Beamforming Massive MIMO Systems Yuki Ono, Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech), Satoshi Suyama, Takahiro Asai (NTT DOCOMO) RCS2021-270 |
In 5G massive MIMO systems, hybrid beamforming (HB), which is composed of the analog beamforming (AB) and the digital be... [more] |
RCS2021-270 pp.102-107 |
RCS, SR, SRW (Joint) |
2022-03-03 10:45 |
Online |
Online (Online) |
Radio Video Transmission Experiments Using Shinkansen Test Train Running at 360 km/h toward 5G Evolution Nobuhide Nonaka, Satoshi Suyama, Tatsuki Okuyama, Hama yuto, Daisuke Kitayama, Takahiro Asai (NTT DOCOMO), Kenichiro Kamohara, Fumitoshi Abe, Reiji Ishima (JR East) RCS2021-273 |
[more] |
RCS2021-273 pp.120-125 |
RCS, SIP, IT |
2022-01-20 10:20 |
Online |
Online (Online) |
Influence of Design-SNR on Error Rate Performance Employing BP Decoder Kohei Ueda (Kagawa Univ.), Satoshi Suyama, Takahiro Asai (NTT DOCOMO), Miki Nobuhiko (Kagawa Univ.) IT2021-30 SIP2021-38 RCS2021-198 |
Belief Propagation (BP) decoding, which is commonly used to decode Low Density Parity Check (LDPC) codes, is an effectiv... [more] |
IT2021-30 SIP2021-38 RCS2021-198 pp.13-17 |
RCS, NS (Joint) |
2021-12-16 13:25 |
Nara |
Nara-ken Bunka Kaikan and Online (Nara, Online) (Primary: On-site, Secondary: Online) |
Performance Evaluations of Transmitter and Receiver Hybrid Beamforming in Massive MIMO at 100 GHz-band Nobuhide Nonaka, Satoshi Suyama, Tatsuki Okuyama, Takahiro Asai (NTT DOCOMO) RCS2021-179 |
[more] |
RCS2021-179 pp.24-29 |
RCS, NS (Joint) |
2021-12-17 10:35 |
Nara |
Nara-ken Bunka Kaikan and Online (Nara, Online) (Primary: On-site, Secondary: Online) |
Evaluation of the Effectiveness of Metasurface, FSS, and Relay Station Technologies for Improving Indoor Areas in the High Frequency Band Jun Tsuboi (DOCOMO), Takeshi Motegi, Osamu Kagaya (AGC), Daisuke Kitayama (NTT), Kensuke Miyachi, Takahiro Asai (DOCOMO) RCS2021-187 |
In order to further utilize the high frequency band represented by millimeter wave, it is one of the issues to construct... [more] |
RCS2021-187 pp.63-68 |
AP, RCS (Joint) |
2021-11-12 09:30 |
Nagasaki |
NBC-Bekkan (Nagasaki) (Nagasaki, Online) (Primary: On-site, Secondary: Online) |
Experimental Trials Using Shinkansen Test Train Running at 360 km/h toward 5G Evolution Nobuhide Nonaka, Satoshi Suyama, Tatsuki Okuyama, Yuto Hama, Daisuke Kitayama, Takahiro Asai (NTT DOCOMO), Shoji Itoh (Ericsson Japan), Anders Carlsson, Johan Furuskog, Magnus Wikstrom, Qiang Zhang (Ericsson), Kenichiro Kamohara, Fumitoshi Abe, Reiji Ishima (JR EAST) RCS2021-166 |
[more] |
RCS2021-166 pp.118-123 |
RCS |
2021-10-22 11:15 |
Online |
Online (Online) |
Performance Evaluation of Two Directions in Base Station Antennas by 28 GHz-Band Outdoor Experiments of Base Station Cooperation Technology in High-Mobility Environments Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2021-134 |
[more] |
RCS2021-134 pp.82-87 |
RCS |
2021-10-22 15:00 |
Online |
Online (Online) |
[Poster Presentation]
NTT DOCOMO's Activities for 5G Evolution & 6G Satoshi Suyama, Tatsuki Okuyama, Nobuhide Nonakaka, Takahiro Asai (NTT DOCOMO) RCS2021-142 |
[more] |
RCS2021-142 p.126 |
RCS, SAT (Joint) |
2021-08-26 15:40 |
Online |
Online (Online) |
[Invited Lecture]
Beyond 5G and 6G for extreme coverage extension: Non-Terrestrial Network trends and performance evaluation of HAPS Yuki Hokazono, Yoshihisa Kishiyama, Takahiro Asai (NTT DOCOMO INC.) SAT2021-31 RCS2021-106 |
In Beyond 5G & 6G era, extreme coverage extension is being studied for use cases in all places including air, sea, and s... [more] |
SAT2021-31 RCS2021-106 p.20(SAT), p.38(RCS) |
RCS, SAT (Joint) |
2021-08-27 18:00 |
Online |
Online (Online) |
Measurement on 39 GHz band radio propagation characteristics for coverage extension from the sky Yuki Hokazono, Yoshihisa Kishiyama, Takahiro Asai (NTT DOCOMO INC.), Tetsumi Takamori, Jun Suzuki, Hiromu Kitanozono (SKY Perfect JSAT Corporation) SAT2021-41 |
While the 5G is expected to be an important technology for regional development and solving regional issues, a key issue... [more] |
SAT2021-41 pp.73-78 |
RCS |
2021-06-24 13:50 |
Online |
Online (Online) |
A Study on How to Optimize the Transmission Power of pico-eNB in Multiband HetNets Ayumi Yoneyama (Kogakuin Univ.), Satoshi Suyama, Takahiro Asai (NTT DOCOMO), Hiroyuki Otsuka (Kogakuin Univ.) RCS2021-58 |
Two types of fifth-generation (5G) mobile systems have been diffused worldwide. One is called as 5G New Radio (NR) SA (S... [more] |
RCS2021-58 pp.175-179 |
RCS |
2021-06-25 14:35 |
Online |
Online (Online) |
Outdoor Experimental Trials of 28 GHz-Band Base Station Cooperation Technologies in High-Mobility Environments with Mobile Stations Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2021-74 |
[more] |
RCS2021-74 pp.261-266 |
RCS, IN, NV (Joint) |
2021-05-27 16:00 |
Online |
Online (Online) |
6G System-Level Simulators in 100 GHz Band Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2021-22 |
[more] |
RCS2021-22 pp.35-40 |
RCS, SR, SRW (Joint) |
2021-03-05 10:30 |
Online |
Online (Online) |
Performance Evaluation of Base Station Cooperation Technologies in Millimeter-Wave Bands at Variable Base Station Deployments under High-Mobility Environments Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2020-249 |
Commercial services of 5th generation mobile communication system (5G) are expanding. In 5G, Massive MIMO -based beamfor... [more] |
RCS2020-249 pp.207-211 |
RCS, SR, SRW (Joint) |
2021-03-05 09:00 |
Online |
Online (Online) |
Adaptive Channel Prediction over Multi-Cluster and Time-Varying Channels for Analog-Digital-Hybrid Massive MIMO Systems Kenta Tsuge, Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech), Satoshi Suyama, Takahiro Asai (NTT DOCOMO) RCS2020-252 |
For 5G massive MIMO systems, hybrid beamforming (HB), which is composed of the analog beamforming (AB) and the digital b... [more] |
RCS2020-252 pp.222-227 |
SIP, IT, RCS |
2021-01-21 10:55 |
Online |
Online (Online) |
Performance Evaluation of Convolutional Poalr Code with Neural Network Decoder Riko Maeda (Kagawa Univ.), Satoshi Suyama, Takahiro Asai (NTT DOCOMO), Nobuhiko Miki (Kagawa Univ.) IT2020-67 SIP2020-45 RCS2020-158 |
The Polar code proposed by Arıkan is a code that can achieve a property approaching the Shannon limit under successive c... [more] |
IT2020-67 SIP2020-45 RCS2020-158 pp.23-27 |
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