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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| CQ, CBE (Joint) |
2025-01-31 10:05 |
Fukuoka | (Fukuoka, Online) (Primary: On-site, Secondary: Online) |
[Invited Talk]
Research to improve communication quality for User-Centric RAN Using Cell-Free Massive MIMO Toshiyuki Shintaku, Takahide Murakami, Akio Ikami, Yu Tsukamoto, Hiroyuki Shinbo, Yoshiaki Amano (KDDI Research) |
(To be available after the conference date) [more] | |
| SR | 2025-01-31 17:05 |
Kagawa | Sunport Takamatsu (Kagawa, Online) (Primary: On-site, Secondary: Online) |
[Short Paper]
A Study on Improvement of Wireless Quality by Prediction of Phase Difference Variation between APs in Cell-Free Massive MIMO Takahide Murakami, Yu Tsukamoto, Akio Ikami, Hiroyuki Shinbo, Yoshiaki Amano (KDDI Research) |
(To be available after the conference date) [more] | |
| RCS, AP (Joint) |
2024-11-13 15:35 |
Ishikawa | (Ishikawa, Online) (Primary: On-site, Secondary: Online) |
[Tutorial Lecture]
Research and development of user-centric networks for 6G Takahiro Hayashi, Yu Tsukamoto, Tatsuya Nagao, Issei Kanno, Yoshiaki Amano (KDDI Research, Inc)  AP2024-143 |
With the launch of 5G services, characterized by high speed and capacity, high reliability with low latency, and massive... [more] | AP2024-143 pp.44-49 |
| RISING (3rd) |
2024-11-11 13:20 |
Hokkaido | Kaderu 2・7 (Sapporo) (Hokkaido) | [Poster Presentation]
Activities of integrated management with AI in User-centric RAN Hiroyuki Shinbo, Yu Tsukamoto, Akio Ikami, Yoshiaki Amano (KDDI Research) |
[more] | |
| RCC, RCS, SeMI, NS, SR, RISING (Joint) |
2024-07-17 11:00 |
Hokkaido | Hokkaido Citizens Activities Promotion Center (Hokkaido, Online) (Primary: On-site, Secondary: Online) |
[Short Paper]
Experimental Analysis of Temporal Characteristics of Phase Difference among APs for Cell-Free Massive MIMO in User-Centric RAN Takahide Murakami, Yu Tsukamoto, Akio Ikami, Hiroyuki Shinbo, Yoshiaki Amano (KDDI Research) SR2024-26 |
Cell-Free massive MIMO (CF-mMIMO) is gaining attention as a technology that can ensure wireless quality without dependin... [more] | SR2024-26 pp.13-15 |
| RCS | 2023-10-19 14:05 |
Kagawa | Kagawa University (Saiwai-cho Campus), and online (Kagawa, Online) (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Research for Wide-Area Expansion of User-Centric RAN Using Cell-Free Massive MIMO Takahide Murakami, Yu Tsukamoto, Reo Kohinata, Naoki Aihara, Akio Ikami, Hiroyuki Shinbo, Yoshiaki Amano (KDDI Research) RCS2023-133 |
Cell-Free massive MIMO (cell-free) is attracting attention as a technology that can ensure wireless quality regardless o... [more] | RCS2023-133 p.26 |
| RCS, SR, SRW (Joint) |
2023-03-01 16:05 |
Tokyo | Tokyo Institute of Technology, and Online (Tokyo, Online) (Primary: On-site, Secondary: Online) |
Neural Network Based Wideband Digtial Post-distortion for Virtualized Terminal Taishi Watanabe, Takeo Ohseki, Yoshiaki Amano (KDDI Research, Inc.) RCS2022-262 |
A virtualised terminal consisting of a normal user terminal and multiple RF relay devices that perform frequency conver... [more] |
RCS2022-262 pp.88-93 |
| RCS, SR, SRW (Joint) |
2023-03-03 16:40 |
Tokyo | Tokyo Institute of Technology, and Online (Tokyo, Online) (Primary: On-site, Secondary: Online) |
A Study on Analog Beam Selection and Digital Beam Design for Millimeter-wave Cell-Free Massive MIMO Shunsuke Kamiwatari, Issei Kanno, Yoshiaki Amano (KDDI Research), Kengo Ando, Shuto Fukue, Koji Ishibashi (UEC) RCS2022-297 |
Cell-Free Massive MIMO (CF mMIMO) has gained much attention as one of potential technologies for Beyond 5G (B5G) whereas... [more] | RCS2022-297 pp.261-266 |
| AP | 2023-02-17 09:30 |
Miyagi | Tohoku University, Aobayama Campus (Miyagi, Online) (Primary: On-site, Secondary: Online) |
AP2022-220 |
(To be available after the conference date) [more] | AP2022-220 pp.127-132 |
| RCS, NS (Joint) |
2022-12-16 15:50 |
Aichi | Nagoya Institute of Technology, and Online (Aichi, Online) (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Standardization of NR network-controlled repeater in 3GPP and research on coverage expansion techniques in millimeter-wave bands Takeo Ohseki, Ryochi Kataoka, Masahiro Takigawa, Taishi Watanabe, Yoshiaki Amano (KDDI Research) NS2022-149 RCS2022-207 |
In the access links of mobile communications system, RF repeaters and relaying nodes have been considered as a means to ... [more] | NS2022-149 RCS2022-207 p.87(NS), p.98(RCS) |
| RCS, AP, UWT (Joint) |
2022-11-17 10:20 |
Fukuoka | Kyushu University, and Online (Fukuoka, Online) (Primary: On-site, Secondary: Online) |
A study on relaying achieving low latency and high capacity in the millimeter wave bands Masahiro Takigawa, Ryochi Kataoka, Takeo Ohseki, Taishi Watanabe, Yoshiaki Amano (KDDI Research, Inc.) RCS2022-176 |
This paper evaluates the link-level throughput characteristics when Line-of-Sight MIMO(LoS-MIMO) is applied between a re... [more] | RCS2022-176 pp.124-129 |
| RCS | 2022-10-27 12:30 |
Ehime | Ehime University, and online (Ehime, Online) (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Research Activities for Deploying Cell-Free Massive MIMO Systems Masaaki Ito (KDDI Research/USC), Shunsuke Kamiwatari, Noboru Osawa, Issei Kanno, Yoshiaki Amano (KDDI Research) RCS2022-132 |
In cell-free massive MIMO systems, a massive number of distributed antennas cooperate with each other and communicate wi... [more] | RCS2022-132 p.25 |
| MIKA (3rd) |
2022-10-13 11:10 |
Niigata | Niigata Citizens Plaza (Niigata, Online) (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Basic Performance Evaluation of Low Latency and High Capacity Relay Technology in the Millimeter Wave Band Ryochi Kataoka, Masahiro Takigawa, Takeo Ohseki, Taishi Watanabe, Yoshiaki Amano (KDDI Research) |
[more] | |
| AP | 2022-06-16 14:25 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Tokyo, Online) (Primary: On-site, Secondary: Online) |
Development of automotive 5G throughput simulator Kazumasa Sakurai (SOKEN), Takuya Sawaya (TMC), Yoshiaki Amano (KDDI Research), Yuki Shida (KDDI) AP2022-32 |
(To be available after the conference date) [more] | AP2022-32 pp.17-21 |
| RCS | 2022-06-15 09:55 |
Okinawa | University of the Ryukyus, Senbaru Campus and online (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Simulation Evaluation of Millimeter Wave Cell Free massive MIMO for Realistic Deployment Environment Shunsuke Kamiwatari, Issei Kanno, Takahiro Hayashi, Yoshiaki Amano (KDDI Research, Inc.) RCS2022-25 |
Cell-free massive MIMO (CF mMIMO) is a candidate elemental technology for Beyond 5G. In this paper, we report the result... [more] | RCS2022-25 pp.7-12 |
| AP | 2022-03-10 10:55 |
Online | Online (Online) | AP2021-183 |
From microwaves to terahertz waves, the directivity and gain were investigated by electromagnetic field simulation when ... [more] | AP2021-183 pp.12-16 |
| SAT | 2021-10-07 14:20 |
Online | Online (Online) | PROPOSAL FOR A USER-CENTRIC RAN ARCHITECTURE TOWARDS BEYOND 5G Kosuke Yamazaki, Takeo Ohseki, Yoshiaki Amano, Takahide Murakami, Hiroyuki Shinbo, Yoji Kishi (KDDI Research, Inc.) SAT2021-43 |
In this paper, we present a novel RAN architecture for Beyond 5G called “user-centric (UC) RAN architecture,” which prov... [more] | SAT2021-43 pp.4-10 |
| AP | 2021-06-17 13:50 |
Online | Online (Online, Online) | Prototype of Multi band orthogonal polarization and Angle MIMO antenna in cellular system Masayuki Nakano, Yoshiaki Amano (KDDI Research, Inc) AP2021-21 |
We devised a small, low-profile multi-band MIMO antenna for cellular band such as indoor base stations that supports m... [more] |
AP2021-21 pp.13-18 |
| EID, ITE-IDY, IEIJ-SSL, SID-JC, IEE-EDD [detail] | 2021-01-29 10:10 |
Online | Online (Online) | Effect of Doping Self-assembled Dendrimer to Thick Liquid Crystal for Microwave-band Phase Shifters Yoichi Murakami, Yosei Shibata, Hiroyasu Sato, Takahiro Ishinabe (Tohoku Univ.), Hiromi Matsuno, Yoshiaki Amano (KDDI), Qiang Chen, Hideo Fujikake (Tohoku Univ.) |
[more] | |
| SR | 2020-11-18 10:00 |
Online | Online (Online) | A Study on Forecasting of Available Spectrum Resources for Sharing using Envelope Extraction and Machine Learning Tatsuya Nagao, Takahiro Hayashi, Yoshiaki Amano (KDDI Research) SR2020-22 |
In recent years, the demand for spectrum resources has been increasing, which has raised expectations for dynamic spectr... [more] | SR2020-22 pp.1-4 |
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