Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
RCC, RCS, SeMI, NS, SR, RISING (Joint) |
2024-07-18 16:45 |
Hokkaido |
Hokkaido Citizens Activities Promotion Center (Primary: On-site, Secondary: Online) |
A Study on Channel Environment Prediction Using Key-Value Vector Database Based on Angular Power Profile in Millimeter-wave Communications Kohei Mitani, Kazunori Hayashi (Kyoto Univ), Koji Yamamoto (KIT), Takuto Arai, Shuki Wai, Tatsuhiko Iwakuni, Daisei Uchida (NTT) RCS2024-105 |
This study investigates prediction methods of obstacle positions and received signal power in millimeter-wave communicat... [more] |
RCS2024-105 pp.107-112 |
RCS |
2024-06-20 09:40 |
Okinawa |
(Primary: On-site, Secondary: Online) |
Theoretical study on SINR performance of MIMO with null-space expansion
-- Relation between null space and conditional probability density of fluctuating channels -- Masaharu Abiru, Makoto Taromaru (Fukuoka Univ.), Hidekazu Murata (Yamaguchi Univ.), Tatsuhiko Iwakuni, Daisei Uchida, Toshifumi Miyagi (NTT) RCS2024-54 |
When a mobile terminal connected with MIMO moves in high speed, the channel capacity is degraded because the channel mat... [more] |
RCS2024-54 pp.157-161 |
IN, RCS, NV (Joint) |
2024-05-30 11:15 |
Fukuoka |
Fukuoka University |
Theoretical study on SINR performance of MIMO with null-space expansion
-- Relation of null space to interference subspace in i.i.d. channels -- Makoto Taromaru, Masaharu Abiru (Fukuoka Univ.), Hidekazu Murata (Yamaguchi Univ.), Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT) RCS2024-17 |
When a mobile terminal connected with MIMO moves in high speed, the channel capacity is degraded because the channel mat... [more] |
RCS2024-17 pp.19-23 |
RCS, SR, SRW (Joint) |
2024-03-13 10:20 |
Tokyo |
The University of Tokyo (Hongo Campus), and online (Primary: On-site, Secondary: Online) |
Study on Time-Varying Tolerance Enhancement Using Null-Space Expansion Technique for Linear MIMO Reception Shohei Kobayashi, Yuki Ohi, Hidekazu Murata (Yamaguchi Univ.), Makoto Taromaru (Hukuoka Univ.), Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT) RCS2023-251 |
The transmission performance deteriorate if the combining weights for interference suppression are fixed within a packet... [more] |
RCS2023-251 pp.7-10 |
AP, RCS (Joint) |
2023-11-16 11:00 |
Kumamoto |
Kumamoto Prefectural Workers' Welfare Hall (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Fast Beam Search for Distributed Antenna Systems in High Frequency Bands Shuki Wai, Takuto Arai, Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT) AP2023-143 RCS2023-166 |
In order to further increase the capacity of wireless communications, attention is focused on the combination of high-fr... [more] |
AP2023-143 RCS2023-166 pp.67-72(AP), pp.71-76(RCS) |
RISING (3rd) |
2023-10-31 09:45 |
Hokkaido |
Kaderu 2・7 (Sapporo) |
[Poster Presentation]
Study of Localization Accuracy and Communication Performance of IRS-Assisted ISAC Systems Mihiro Hashimoto, Koji Yamamoto, Itsuki Yonemura (Kyoto Univ.), Toshiro Nakahira, Daisuke Murayama, Takuto Arai, Daisei Uchida, Naoki Kita (NTT) |
This study experimentally demonstrates a device-free localization in intelligent reflecting surface (IRS)-assisted milli... [more] |
|
RISING (3rd) |
2023-10-31 13:00 |
Hokkaido |
Kaderu 2・7 (Sapporo) |
[Poster Presentation]
Object Position Prediction Leveraging Both-side Angular Power Profiles in mmWave Communications Itsuki Yonemura (Kyoto Univ.), Koji Yamamoto (KIT), Kazunori Hayashi (Kyoto Univ.), Takuto Arai, Shuki Wai, Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT) |
This study experimentally demonstrates a novel position prediction leveraging both-side angular power profiles (APPs) sc... [more] |
|
RCS |
2023-10-19 16:40 |
Kagawa |
Kagawa University (Saiwai-cho Campus), and online (Primary: On-site, Secondary: Online) |
Transmission Performance and Handover Control Technique of 60-GHz Wireless LAN on Indoor Open Environment Tatsuhiko Iwakuni, Daisei Uchida, Takuto Arai, Shuki Wai, Naoki Kita (NTT) RCS2023-137 |
Wireless communication system using high-frequency bands requires in-sight communication due to straightness of radio wa... [more] |
RCS2023-137 pp.39-44 |
SIS, ITE-BCT |
2023-10-12 14:45 |
Yamaguchi |
HISTORIA UBE (Primary: On-site, Secondary: Online) |
Performance evaluation of null-space expanded linear reception technique over time-varying MIMO channels Yuki Ohi, Hidekazu Murata (Yamaguchi Univ.), Makoto Taromaru (Fukuoka Univ.), Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT) |
This paper considers the improvement of multiple-input multiple-output signal separation performance using a linear spat... [more] |
|
RCS, SR, SRW (Joint) |
2023-03-01 11:15 |
Tokyo |
Tokyo Institute of Technology, and Online (Primary: On-site, Secondary: Online) |
Performance Improvement of Linear MIMO Reception over Time-Variant Channels Using Null-Space Expansion Yuki Ohi, Hidekazu Murata (Yamaguchi Univ.), Makoto Taromaru (Hukuoka Univ.), Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT) RCS2022-250 |
This paper considers the improvement of MIMO signal separation performance using a linear spatial filter in a time-varyi... [more] |
RCS2022-250 pp.21-24 |
RCS, SR, SRW (Joint) |
2023-03-03 15:50 |
Tokyo |
Tokyo Institute of Technology, and Online (Primary: On-site, Secondary: Online) |
Simultaneous Beam Search with Multiple Distributed Antennas for Distributed Antenna System Shuki Wai, Takuto Arai, Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT) RCS2022-295 |
Distributed antenna (DA) system using high-frequency bands such as millimeter-wave and sub-terahertz is expected to be o... [more] |
RCS2022-295 pp.249-254 |
SeMI, SeMI (Joint) |
2023-01-19 15:35 |
Tokushima |
Naruto grand hotel (Primary: On-site, Secondary: Online) |
[Short Paper]
Comparative Study of Object Localization by mmWave Sensing and Acoustic Wave Sensing Ryosuke Hanahara, Itsuki Yonemura, Koji Yamamoto (Kyoto Univ.), Takuto Arai, Shuki Hideki, Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT) SeMI2022-84 |
This paper compares sensing of indoor communication environments using the beam search method in millimeter-wave (mmWave... [more] |
SeMI2022-84 pp.54-56 |
SeMI, SeMI (Joint) |
2023-01-19 16:05 |
Tokushima |
Naruto grand hotel (Primary: On-site, Secondary: Online) |
[Short Paper]
Received SNR Prediction Using Two-sided Beam Search in mmWave Communication: An Experimental Study Itsuki Yonemura, Ryosuke Hanahara, Takamochi Kanda, Koji Yamamoto (Kyoto Univ.), Takuto Arai, Syuki Wai, Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT) SeMI2022-87 |
This paper experimentally demonstrates a novel received signal-to-noise ratio (SNR) prediction based on a two-sided beam... [more] |
SeMI2022-87 pp.65-69 |
RISING (3rd) |
2022-10-31 10:30 |
Kyoto |
Kyoto Terrsa (Day 1), and Online (Day 2, 3) |
[Poster Presentation]
Blockage Prediction Using Transmit/Receive Beam-pairs in mmWave Networks Itsuki Yonemura, Takamochi Kanda, Ryosuke Hanahara, Koji Yamamoto (Kyoto Univ.), Takuto Arai, Shuki Wai, Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT) |
This study experimentally demonstrates a novel blockage prediction based on exhaustive beam-pair scan in millimeter wav... [more] |
|
RCS |
2022-10-28 12:10 |
Ehime |
Ehime University, and online (Primary: On-site, Secondary: Online) |
Concept and Issues of New Radio Network Topology for 5G Evolution & 6G Masashi Iwabuchi (NTT), Satoshi Suyama (NTT DOCOMO), Takuto Arai (NTT), Mitsuki Nakamura, Kenta Goto (NTT DOCOMO), Riku Ohmiya, Daisei Uchida (NTT), Takayuki Yamada (NTT DOCOMO), Tomoaki Ogawa (NTT) RCS2022-148 |
[more] |
RCS2022-148 pp.101-106 |
CQ, CS (Joint) |
2022-05-13 13:50 |
Fukui |
Fukui (Fuku Pref.) (Primary: On-site, Secondary: Online) |
[Special Invited Talk]
Analog-RoF and Distributed MIMO Techniques in Higher Frequency Bands for 6G/IOWN Takeshi Onizawa, Naoki Kita, Yushi Shirato, Daisei Uchida, Hideki Toshinaga (NTT) CQ2022-15 |
In this report, we describe analog-radio over fiber (A-RoF) and distributed multiple-input multiple-output (MIMO) techni... [more] |
CQ2022-15 pp.80-85 |
AP |
2022-04-15 11:50 |
Yamagata |
Yamagata Syokuryo Kaikan (Primary: On-site, Secondary: Online) |
A study on gain reduction suppression in a wideband slot array antenna with a reflector Naoya Yamamoto, Takashi Hikage, Manabu Yamamoto (Hokkaido Univ.), Shuki Wai, Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT) AP2022-6 |
[more] |
AP2022-6 pp.28-33 |
AP, WPT (Joint) |
2022-01-21 13:30 |
Tottori |
Kenmin-Fureai-Kaikan (Primary: On-site, Secondary: Online) |
Proposal on Novel Staircase Array Antenna Configuration utilizing Stacked Butler Matrix Hideya So, Yoshitada Watanabe, Takana Kaho (SIT), Mizuki Suga, Takuto Arai, Yushi Shirato, Hideki Toshinaga, Daisei Uchida, Naoki Kita (NTT) AP2021-151 |
Massive Multiple-Input Multiple-Output (Massive MIMO), which uses a large number of antenna elements, has been investiga... [more] |
AP2021-151 pp.92-97 |
RCS, NS (Joint) |
2021-12-16 13:50 |
Nara |
Nara-ken Bunka Kaikan and Online (Primary: On-site, Secondary: Online) |
Issues of Sub-Terahertz-Band Radio Access Technologies for 6G Hayato Fukuzono (NTT), Satoshi Suyama (NTT DOCOMO), Doohwan Lee, Daisei Uchida (NTT), Tatsuki Okuyama (NTT DOCOMO), Masashi Iwabuchi, Jun Mashino (NTT), Yoshihisa Kishiyama (NTT DOCOMO) RCS2021-180 |
One of the requirements for the sixth generation mobile communication system (6G) is extreme high data rate and capacity... [more] |
RCS2021-180 pp.30-34 |
RCS |
2021-10-21 13:00 |
Online |
Online |
Initial access beam search method with variable beam width according to the area size Takuto Arai, Tatsuhiko Iwakuni, Syuki Wai, Daisei Uchida, Naoki Kita (NTT) RCS2021-122 |
High gain antennas using narrow-beamforming are required to compensate for high propagation loss in high frequency bands... [more] |
RCS2021-122 pp.25-30 |