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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 212  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
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)
(To be available after the conference date) [more]
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.)
 [more]
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)
(To be available after the conference date) [more]
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
ED 2019-11-21
13:00
Tokyo   Improvement of electron trajectory calculation in an electromagnetic field using Runge-Kutta-Fehlberg fourth order method
Takahiro Ikeda, Hidekazu Murata, Hiroshi Shimoyama (Meijo Univ.) ED2019-59
 [more] ED2019-59
pp.1-4
ED 2019-11-21
13:50
Tokyo   Fabrication of field emitter array with integral Si ballast resistor
Hidetoshi Shinya, Hidekazu Murata, Eiji Rokuta, Hiroshi Shimoyama (Meijo Univ.), Masayoshi Nagao, Katsuhisa Murakami (AIST) ED2019-61
The emission current from field emitter fluctuates due to surface migration and adsorption-desorption of residual gas mo... [more] ED2019-61
pp.9-12
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