Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
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 |
RCS, SR, SRW (Joint) |
2024-03-15 10:15 |
Tokyo |
The University of Tokyo (Hongo Campus), and online (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Research on wireless transmission technology at universities and high frequency bands Hidekazu Murata (Yamaguchi Univ.) RCS2023-283 SR2023-106 SRW2023-70 |
Mobile communication systems have evolved to higher frequency bands with each successive generation. High-speed wireless... [more] |
RCS2023-283 SR2023-106 SRW2023-70 p.132(RCS), p.64(SR), p.97(SRW) |
RCS, SR, SRW (Joint) |
2024-03-15 16:40 |
Tokyo |
The University of Tokyo (Hongo Campus), and online (Primary: On-site, Secondary: Online) |
Relationship between amount of collaboration traffic and error performance of terminal collaborated MIMO reception using adaptive collaboration scheme Shunya Morimoto, Hayato Sugai, Hidekazu Murata (Yamaguchi Univ.), Daisuke Murayama, Toshiro Nakahira, Tomoaki Ogawa (NTT) RCS2023-293 |
This paper discusses terminal-collaborated MIMO reception, in which multiple wireless terminals in the neighborhood coll... [more] |
RCS2023-293 pp.182-186 |
ED |
2023-12-08 10:50 |
Aichi |
WINC AICHI |
Estimation of brightness and Richardson constant of a Schottky emission electron source using experimental data and numerical simulation Futo Okada, Mitsuki Ozawa, Hidekazu Murata, Takayuki Tanaka, Eiji Rokuta (Meijo Univ.) ED2023-50 |
The average brightness is an important indicator of electron source performance but is usually difficult to measure in s... [more] |
ED2023-50 pp.45-48 |
AP, RCS (Joint) |
2023-11-16 13:00 |
Kumamoto |
Kumamoto Prefectural Workers' Welfare Hall (Primary: On-site, Secondary: Online) |
[Invited Talk]
User Terminal Collaborated MIMO Communications Exploiting Higher-Frequency Bands
-- Prototyping 12-multiplexing equipment with collaboration at 26 GHz -- Hidekazu Murata (Yamaguchi Univ.) AP2023-145 RCS2023-168 |
This paper introduces a transmission/reception technique based on mobile terminal collaboration that equivalently increa... [more] |
AP2023-145 RCS2023-168 p.79(AP), p.83(RCS) |
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] |
|
SIS, ITE-BCT |
2023-10-13 13:05 |
Yamaguchi |
HISTORIA UBE (Primary: On-site, Secondary: Online) |
Performance improvement of terminal-collaborated MIMO reception system leveraging multiple decision results Hayato Sugai, Hidekazu Murata (Yamaguchi Univ.), Daisuke Murayama, Toshiro Nakahira, Tomoaki Ogawa (NTT) |
This paper deals with terminal-collaborated MIMO reception, in which nearby terminals collaborate to receive a MIMO sign... [more] |
|
SIS, ITE-BCT |
2023-10-13 13:25 |
Yamaguchi |
HISTORIA UBE (Primary: On-site, Secondary: Online) |
Performance of terminal-collaborated MIMO reception with two-stage terminal selection schemes based on channel matrices and residual error coefficients Ryosuke Kanda, Hidekazu Murata (Yamaguchi Univ.), Satoshi Suyama, Huiling Jiang (NTT DOCOMO) |
In terminal-collaborated multiple-input multiple-output (MIMO) reception, the terminal to be the collaboration partner n... [more] |
|
RCC, ISEC, IT, WBS |
2023-03-14 16:50 |
Yamaguchi |
(Primary: On-site, Secondary: Online) |
[Invited Talk]
Novel Wireless Communication System Realized by Mobile Terminal Collaboration using Higher-Frequency Bands Hidekazu Murata (Yamaguchi Univ.) IT2022-88 ISEC2022-67 WBS2022-85 RCC2022-85 |
This paper introduces a transmission/reception technique based on mobile terminal collaboration that equivalently increa... [more] |
IT2022-88 ISEC2022-67 WBS2022-85 RCC2022-85 p.126 |
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) |
2023-03-01 14:50 |
Tokyo |
Tokyo Institute of Technology, and Online (Primary: On-site, Secondary: Online) |
Transmission performance improvement of terminal-collaborated MIMO reception based on subband-based terminal selection Ryosuke Kanda, Hidekazu Murata (Yamaguchi Univ.), Satoshi Suyama, Takayuki Yamada (NTT DOCOMO, INC.) RCS2022-259 |
In terminal-collaborated MIMO (Multiple-Input Multiple-Output) reception, where reception is performed collaboratively w... [more] |
RCS2022-259 pp.72-76 |
RCS, SR, SRW (Joint) |
2023-03-01 15:15 |
Tokyo |
Tokyo Institute of Technology, and Online (Primary: On-site, Secondary: Online) |
Transmission Performance of Collaborative MIMO Systems Utilizing Multiple Detection Terminals Hayato Sugai, Hidekazu Murata (Yamaguchi Univ.), Daisuke Murayama, Toshiro Nakahira, Takatsune Moriyama (NTT) RCS2022-260 |
This paper deals with a terminal-collaborated MIMO reception technique, in which nearby terminals collaborate to receive... [more] |
RCS2022-260 pp.77-81 |
ED |
2022-12-08 13:45 |
Aichi |
12/8 Nagoya University, 12/9 WINC AICHI |
ED2022-52 |
So far, we have developed a 3-D boundary magnetic charge method (BMCM) for high accuracy field calculation in a static m... [more] |
ED2022-52 pp.11-14 |
ED |
2022-12-09 12:05 |
Aichi |
12/8 Nagoya University, 12/9 WINC AICHI |
Electron emission characteristics of LaB6 thermal and Schottky emission at lower than normal heating temperatures Chotaro Kajita, Futo Okada, Takayuki Tanaka, Hidekazu Murata, Eiji Rokuta (Meijou Univ.) ED2022-64 |
We have been developing a novel LaB6 electron gun operates under Schottky emission mode and satisfies the conditions suc... [more] |
ED2022-64 pp.44-46 |
ED |
2022-12-09 16:00 |
Aichi |
12/8 Nagoya University, 12/9 WINC AICHI |
Electron emission from W nano-tips fabricated via field-assisted - water and - oxygen etching Yukino Inaba, Sakura Kabeya, Sakiho Morioka, Ayaka Waki, Mako Yoshida, Yuuka Kunieda, Hidekazu Murata, Eiji Rokuta (Meijo Univ.) ED2022-69 |
Field-assisted (FA)-oxygen etching is known as a method to change a typical tungsten (W) needle into highly coherent fie... [more] |
ED2022-69 pp.62-63 |
RCS |
2022-10-28 13:50 |
Ehime |
Ehime University, and online (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Novel wireless communication system realized by mobile terminal collaboration
-- Recent results and application to uplink transmission -- Hidekazu Murata, Yuta Ida (Yamaguchi Univ.), Kazuki Maruta (Tokyo Univ. of Science), Yutaka Jitsumatsu (Tokyo Tech), Osamu Muta (Kyushu Univ.), Hiraku Okada (Nagoya Univ.), Eiji Okamoto (NITech), Yukitoshi Sanada (Keio Univ.), Toshihiko Nishimura (Hakkaido Univ.), Satoshi Denno (Okayama Univ.) RCS2022-149 |
If nearby wireless terminals cooperate using high-frequency bands, a large number of antennas can be used at the termina... [more] |
RCS2022-149 p.107 |
CQ, MIKA (Joint) |
2021-09-10 11:00 |
Online |
Online |
Optimal terminal selection based on Doppler frequency estimation for terminal cooperative communications Takuma Fujii, Satoshi Denno, Hou Yafei (Okayama Univ.), Hidekazu Murata (Kyoto Univ.) CQ2021-54 |
Terminal cooperative communications is communication in which multiple terminals receive signals transmitted from a base... [more] |
CQ2021-54 pp.82-87 |
RCS |
2020-10-22 09:30 |
Online |
Online |
Shared dataset framework toward applications of machine learning and mathematical optimization for 6G Kazuki Maruta (Tokyo Tech.), Yuta Ida (Yamaguchi Univ.), Yafei Hou (Okayama Univ.), Osamu Muta (Kyushu Univ.), Hiraku Okada (Nagoya Univ.), Toshihiko Nishimura (Hokkaido Univ.), Eiji Okamoto (Nagoya Inst. of Tech.), Yukitoshi Sanada (Keio Univ.), Hidekazu Murata (Kyoto Univ.), Satoshi Denno (Okayama Univ.) RCS2020-92 |
In the research of applying machine learning and mathematical optimization to problems in wireless communication systems... [more] |
RCS2020-92 pp.1-6 |