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All Technical Committee Conferences (Searched in: Recent 10 Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| RCS, SR, SRW (Joint) |
2025-03-05 10:20 |
Kyoto | Kyoto Institute of Technology (Primary: On-site, Secondary: Online) |
Performance evaluation of subarray-distributed MU-MIMO using null-space expansion
-- Effect of element space and scattering radius -- Masaharu Abiru, Makoto Taromaru (Fukuoka Univ.), Hidekazu Murata (Yamaguchi Univ.), Tatsuhiko Iwakuni, Daisei Uchida, Takafumi Fujita (NTT)  RCS2024-258 |
Multi-user MIMO is an effective way to use frequency resources. However in a time-varying channel environment, inter-use... [more] | RCS2024-258 pp.13-18 |
| RCS, SR, SRW (Joint) |
2025-03-06 15:40 |
Kyoto | Kyoto Institute of Technology (Primary: On-site, Secondary: Online) |
Experimental Performance Evaluation of Frequency-Domain Linear MIMO Reception Using Null-Space Expansion Technique Yuki Ohi, Hidekazu Murata (Yamaguchi Univ.), Makoto Taromaru (Fukuoka Univ.), Tatsuhiko Iwakuni, Daisei Uchida, Takafumi Fujita (NTT) RCS2024-279 |
[more] | RCS2024-279 pp.102-107 |
| RCS, SR, SRW (Joint) |
2025-03-06 16:05 |
Kyoto | Kyoto Institute of Technology (Primary: On-site, Secondary: Online) |
Performance Evaluation of Collaborative MIMO Reception System with Multiple Detection Terminals Using Actual Received Signals Hayato Sugai, Hidekazu Murata, Xin Du (Yamaguchi Univ.), Shoko Shinohara, Daisuke Murayama, Toshiro Nakahira, Takeru Fukushima, Yusuke Asai (NTT) RCS2024-280 |
This paper discusses terminal-collaborated MIMO reception, in which multiple wireless terminals in the neighborhood coll... [more] | RCS2024-280 pp.108-113 |
| RCS, SIP, IT | 2025-01-30 14:35 |
Yamaguchi | Kaikyou-messe (Primary: On-site, Secondary: Online) |
Transmission Performance of Terminal-Collaborated MIMO Reception System Using Visible Light Communication Shota Inoue, Hidekazu Murata, Xin Du (Yamaguchi Uni.) IT2024-65 SIP2024-104 RCS2024-248 |
With the evolution of wireless communication technology, mobile terminals and IoT devices are spreading rapidly. As a re... [more] | IT2024-65 SIP2024-104 RCS2024-248 pp.226-231 |
| RCS, SIP, IT | 2025-01-30 15:00 |
Yamaguchi | Kaikyou-messe (Primary: On-site, Secondary: Online) |
Comparative Study of Terminal Collaboration Schemes under Time Delay Constraint Sota Tokunaga, Hidekazu Murata, Xin Du (Yamaguchi Uni.), Shoko Shinohara, Daisuke Murayama, Toshirou Nakahira, Takeru Fukushima, Yusuke Asai (NTT) IT2024-66 SIP2024-105 RCS2024-249 |
[more] | IT2024-66 SIP2024-105 RCS2024-249 pp.232-237 |
| ED | 2024-12-05 14:50 |
Aichi | WINC AICHI | Evaluation of emission current of TiN coated volcano-structured field emitter array before and after aging Yusuke Kawasaki, Hidekazu Murata (Meijo Univ.), Hiromasa Murata, Masayoshi Nagao (AIST) ED2024-42 |
It was difficult to quantitatively evaluate the effect of aging on the uniformity of emission current from FEA. Observat... [more] | ED2024-42 pp.9-12 |
| ED | 2024-12-06 10:30 |
Aichi | WINC AICHI | Development of an improved 3D boundary charge method considering space charge effects Yuto Suzuki, Hidekazu Murata, Takayuki Tanaka, Eiji Rokuta (Meijo Univ.) ED2024-50 |
Three-dimensional (3D) electron ray tracing that considers space charge effects is essential to evaluate the focal chara... [more] | ED2024-50 pp.38-40 |
| MIKA (3rd) |
2024-10-28 15:40 |
Okayama | Okayama Convention Center | [Poster Presentation]
Field Transmission Experimental System for UHF 12 x 12 MIMO Scenario Hayato Nakashima (Yamaguchi Univ.), Hidekazu Murata, Xin Du (Yamaguchi univ.) |
In mobile communications, while higher frequency bands are used with each successive generation, the importance of effec... [more] | |
| MIKA (3rd) |
2024-10-29 14:35 |
Okayama | Okayama Convention Center | [Poster Presentation]
Field Transmission Experiment of MIMO Linear Signal Separation Scheme Using Null-Space Expansion Technique Yuki Ohi, Shohei Kobayashi, Hidekazu Murata (Yamaguchi University) |
The development of wireless communication services in recent years has led to a rapid increase in communication traffic,... [more] | |
| 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 |
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