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All Technical Committee Conferences (All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| RCS, SR, SRW (Joint) |
2022-03-04 15:20 |
Online | Online | Evaluation of the optimal position of relay station equipped with frequency converter in high frequency band Masahiro Takigawa, Ryochi Kataoka, Takeo Ohseki, Taishi Watanabe, Kosuke Yamazaki, Yoji Kishi (KDDI Research)  RCS2021-291 |
In order to realize the integration of physical and cyber space (CPS: Cyber-Physical System), real-time, high-speed and ... [more] | RCS2021-291 pp.195-200 |
| MIKA (3rd) |
2021-10-29 10:30 |
Okinawa | (Primary: On-site, Secondary: Online) |
[Poster Presentation]
The Basic Study of Low Latency Relaying Method for Uplink in the High Frequency Band Ryochi Kataoka, Takeo Ohseki, Taishi Watanabe, Kosuke Yamazaki, Yoji Kishi (KDDI Research) |
[more] | |
| CQ (2nd) |
2021-01-21 17:00 |
Online | Online | [Special Talk]
Motivation for obtaining a degree and research activities so far Ryochi Kataoka (KDDI Research) |
[more] | |
| NS, RCS (Joint) |
2020-12-18 10:50 |
Online | Online | Spatially and Spectrally Distributed Massive MIMO toward Beyond 5G systems Kentaro Nishimori (KDDI Research/Niigata Univ.), Takahiro Matsuda (KDDI Research/Tokyo Metropolitan Univ.), Ryochi Kataoka, Takeo Ohzeki, Daishi Watanabe, Kosuke Yamazaki (KDDI Research) RCS2020-145 |
[more] | RCS2020-145 pp.60-65 |
| MIKA (3rd) |
2020-10-09 10:15 |
Niigata | (Primary: On-site, Secondary: Online) |
Evaluation report of Interference Mitigation Method for Dynamic Spectrum Sharing Ryochi Kataoka, Issei Kanno, Naoto Tsumachi (KDDI Research), Toshinori Suzuki (KDDI Research/Tohoku Gakuin Univ.), Hiroyasu Ishikawa (KDDI Research/Nihon Univ.), Kosuke Yamazaki, Yoji Kishi (KDDI Research) |
Mobile communication traffic is increasing yearly due to the spread of mobile broadband services, and the demand will fu... [more] | |
| RISING (2nd) |
2019-11-27 13:55 |
Tokyo | Fukutake Learning Theater, Hongo Campus, Univ. Tokyo | [Poster Presentation]
[MIKA/RISING Collaboration]The study of interference mitigation method for dynamic spectrum sharing Ryochi Kataoka, Issei Kanno (KDDI Research), Toshinori Suzuki (KDDI Research/Tohoku Gakuin Univ.), Hiroyasu Ishikawa (KDDI Research/Nihon Univ.), Kosuke Yamazaki, Yoji Kishi (KDDI Research) |
[more] | |
| RCS | 2019-10-24 16:15 |
Kanagawa | Yokosuka Research Park | [Invited Lecture]
The study of interference mitigation method for dynamic spectrum sharing between different systems Ryochi Kataoka, Issei Kanno (KDDI Research), Toshinori Suzuki (KDDI Research/Tohoku Gakuin Univ.), Hiroyasu Ishikawa (KDDI Research/Nihon Univ.), Kosuke Yamazaki, Yoji Kishi (KDDI Research) RCS2019-190 |
[more] | RCS2019-190 p.69 |
| MIKA (2nd) |
2019-10-04 10:15 |
Hokkaido | Hokkaido Univ. | [Poster Presentation]
The study of interference mitigation method for dynamic spectrum sharing Ryochi Kataoka, Issei Kanno (KDDI Research), Toshinori Suzuki (KDDI Research/Tohoku Gakuin Univ.), Hiroyasu Ishikawa (KDDI Research/Nihon Univ.), Kosuke Yamazaki, Yoji Kishi (KDDI Research) |
[more] | |
| SR | 2018-05-24 11:30 |
Tokyo | Tokyo big sight | A Study on Reduction Method on Radio Resource Control Signal Amount of D2D Relay Communication Ryochi Kataoka, Koichiro Kitagawa, Bingxuan Zhao, Katsuo Yunoki, Hiroyuki Shinbo, Akira Yamaguchi, Kazunori Takeuchi (KDDI Research) SR2018-2 |
In 5G systems, the utilization of high frequency band that can use a wide bandwidth is expected. Generally, there is a p... [more] | SR2018-2 pp.7-12 |
| RCS | 2018-04-23 13:35 |
Yamaguchi | Hotel New Tanaka, Yuda Onsen | Evaluation of Decreasing Signaling Messages of D2D Communication in 5G Systems at Moving Environments Bingxuan Zhao, Koichiro Kitagawa, Takashi Fujimoto, Ryochi Kataoka, Katsuo Yunoki, Hiroyuki Shinbo (KDDI Research) RCS2018-8 |
The fifth Generation (5G) system utilizing millimeter wave (mmW) bands suffers from the problem of uncovered areas due t... [more] | RCS2018-8 pp.43-48 |
| RCS, SR, SRW (Joint) |
2018-02-28 15:15 |
Kanagawa | YRP | A Performance Evaluation of D2D Relay Communication in 5G systems Koichiro Kitagawa, Takashi Fujimoto, Bingxuan Zhao, Ryochi Kataoka, Katsuo Yunoki, Hiroyuki Shinbo (KDDI Research) SR2017-114 |
In 5G systems, resource utilization in small cells with higher frequency band can be improved by using device-to-device ... [more] | SR2017-114 pp.17-23 |
| SR, SRW (Joint) |
2017-10-23 14:00 |
Overseas | Grand Hotel Palatino, Rome, Italy | [Poster Presentation]
Architecture Study on 5G Networks with Edge Computing and D2D for Improving Communication Quality Katsuo Yunoki, Koichiro Kitagawa, Takashi Fujimoto, Bingxuan Zhao, Ryochi Kataoka, Hiroyuki Shinbo (KDDI Research) SR2017-79 SRW2017-31 |
Authors are investigating to improve communication performance by utilizing "Edge computing" and "Device-to-device (D2D)... [more] | SR2017-79 SRW2017-31 p.37(SR), p.41(SRW) |
| RCS, AP (Joint) |
2016-11-25 13:50 |
Kyoto | Kyoto International Community House | Evaluation of transmission rate on massive MIMO in an outdoor environment Kentaro Nishimori, Ryochi Kataoka (Niigata Univ.), Ngochao Tran, Tetsuro Imai (Docomo) AP2016-120 |
[more] | AP2016-120 pp.77-82 |
| CQ | 2016-05-25 13:50 |
Fukuoka | Kyushu University | Performance evaluation of massive MIMO in an actual outdoor environment Kentaro Nishimori, Ryochi Kataoka (Niigata Univ.), Ngochao Tran, Tetsuro Imai (NTT Docomo) CQ2016-26 |
[more] | CQ2016-26 pp.81-86 |
| AP | 2016-03-11 09:50 |
Yamanashi | Isawa Onsen (Kanpo no Yado) | Interference to Noise power Ratio metric property for Collision Detection in MU-MIMO transmission Kazuma Ando, Ryochi Kataoka, Kentaro Nishimori (Niigata Univ.), Takefumi Hiraguri (NIT), Hideo Makino (Niigata Univ.) AP2015-217 |
[more] | AP2015-217 pp.75-80 |
| CQ (2nd) |
2015-10-30 13:20 |
Osaka | [Poster Presentation]
Performance evaluation of Collision Detection for MU-MIMO transmission Kazuma Ando, Kentro Nishimori, Ryochi Kataoka (Niigata Univ.), Takefumi Hiraguri (NIT) |
We have proposed an interference detection method in MIMO transmission. This report proposes a collision detection metho... [more] | ||
| CQ | 2015-09-01 13:20 |
Kyoto | Kyoto Institute of Technology | Relationship between the interference reduction characteristics and amount of signal processing by cylindrical array based massive MIMO in a real microcell environment Ryochi Kataoka, Kentaro Nishimori (Niigata Univ.), Ngochao Tran, Tetsuro Imai (NTTdocomo) CQ2015-49 |
[more] | CQ2015-49 pp.55-60 |
| CQ | 2015-09-01 15:10 |
Kyoto | Kyoto Institute of Technology | Application on multi-user system by MIMO based collision detection Ryochi Kataoka (Niigata Univ.), Yoshiaki Morino (NIT), Kentaro Nishimori (Niigata Univ.), Takefumi Hiraguri (NIT) CQ2015-54 |
[more] | CQ2015-54 pp.83-88 |
| RCS, SR, SRW (Joint) |
2015-03-04 16:50 |
Tokyo | Tokyo Institute of Technology | Interference reduction characteristics by cylindrical array based massive MIMO with analog-digital hybrid processing in a real microcell environment Ryochi Kataoka, Junpei Miyazawa, Kentaro Nishimori (Niigata Univ.), Ngochao Tran, Tetsuro Imai (NTTdocomo) RCS2014-323 |
Massive MIMO enables the improvement on the transmission rate without increasing the burden on the signal processing by ... [more] | RCS2014-323 pp.129-134 |
| AP | 2015-02-19 10:55 |
Hyogo | Chusho-kigyou center at Amagasaki-City | Interference reduction characteristics by circular array based massive MIMO in a real microcell environment Ryochi Kataoka, Kentaro Nishimori (Niigata Univ.), Ngochao Tran, Tetsuro Imai (NTTdocomo) AP2014-189 |
Massive MIMO enables the improvement on the transmission rate without increasing the burden on the signal processing by ... [more] | AP2014-189 pp.15-20 |
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