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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 203  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS 2023-06-14
09:30
Hokkaido Hokkaido University, and online
(Primary: On-site, Secondary: Online)
Study on Subarray Beam Control for Sub-Terahertz-Band MIMO Spatial Multiplexing
Naoki Hamada, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Takeo Ohgane (Hokkaido Univ.) RCS2023-28
In 6th generation mobile communication system (6G), the use of sub-Terahertz band (100–300 GHz) is being considered to r... [more] RCS2023-28
pp.1-6
RCS 2023-06-14
09:40
Hokkaido Hokkaido University, and online
(Primary: On-site, Secondary: Online)
Study on Characteristic Improvement of Direct-Binary Search Leveraged Loose Beam Forming in Massive MIMO Systems
Yuta Hayashi, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Takeo Ohgane (Hokkaido Univ.) RCS2023-29
In massive MIMO systems, a loose beam forming method is considered to solve the problem of increased computation and ant... [more] RCS2023-29
pp.7-12
RCS 2023-06-14
09:50
Hokkaido Hokkaido University, and online
(Primary: On-site, Secondary: Online)
A Study on Vector Perturbation Method Using MCMC in Massive MIMO
Shunsuke Kakuta (Hokkaido Univ.), Junichiro Hagiwara (Mukogawa Women's Univ.), Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Takeo Ohgane (Hokkaido Univ.) RCS2023-30
 [more] RCS2023-30
pp.13-18
IT, RCS, SIP 2023-01-24
12:20
Gunma Maebashi Terrsa
(Primary: On-site, Secondary: Online)
A Study on Performance Improvement of Stochastic MIMO Signal Detection Using Variational Bayesian Methods
Hiroki Asumi, Shunsuke Kakuta, Junichiro Hagiwara, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Takeo Ohgane (Hokkaido Univ.) IT2022-34 SIP2022-85 RCS2022-213
 [more] IT2022-34 SIP2022-85 RCS2022-213
pp.30-35
IT, RCS, SIP 2023-01-24
15:55
Gunma Maebashi Terrsa
(Primary: On-site, Secondary: Online)
Impact of Channel Estimation Error on Antenna Selection Using Simulated Annealing for Distributed MIMO Systems
Kento Nishimura, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Junichiro Hagiwara, Takeo Ohgane (Hokkaido Univ) IT2022-43 SIP2022-94 RCS2022-222
Distributed MIMO systems, which have been considered in recent years, use a very large number of base station antennas, ... [more] IT2022-43 SIP2022-94 RCS2022-222
pp.78-83
IT, RCS, SIP 2023-01-24
16:20
Gunma Maebashi Terrsa
(Primary: On-site, Secondary: Online)
Study on IRS Control based on Beamforming for Sub-Terahertz Band Communications
Shuto Tadokoro, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Junichiro Hagiwara, Takeo Ohgane (Hokkaido Univ.) IT2022-44 SIP2022-95 RCS2022-223
 [more] IT2022-44 SIP2022-95 RCS2022-223
pp.84-89
IT, RCS, SIP 2023-01-24
16:45
Gunma Maebashi Terrsa
(Primary: On-site, Secondary: Online)
Characteristics Analysis of Direction of Arrival Estimation with Compressed Sensing Using Grid Shifts
Shudai Kunimoto, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Junichiro Hagiwara, Takeo Ohgane (Hokkaido Univ.) IT2022-45 SIP2022-96 RCS2022-224
 [more] IT2022-45 SIP2022-96 RCS2022-224
pp.90-95
IT, RCS, SIP 2023-01-25
14:35
Gunma Maebashi Terrsa
(Primary: On-site, Secondary: Online)
Study on computational complexity reduction in channel prediction for sub-THz band communications
Daigo Mochizuki, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Junichiro Hagiwara, Takeo Ohgane (Hokkaido Univ.) IT2022-64 SIP2022-115 RCS2022-243
 [more] IT2022-64 SIP2022-115 RCS2022-243
pp.202-207
RCS, AP, UWT
(Joint)
2022-11-17
11:00
Fukuoka Kyushu University, and Online
(Primary: On-site, Secondary: Online)
[Invited Talk] Fundamentals of Orbital Angular Momentum (OAM) Mode Multiplexing
Toshihiko Nishimura (Hokkaido Univ.) AP2022-164 RCS2022-177
The demand for high-capacity wireless communications is increasing as we move toward the 6G era, which will provide a fu... [more] AP2022-164 RCS2022-177
pp.97-102(AP), pp.130-135(RCS)
RCS 2022-10-27
14:00
Ehime Ehime University, and online
(Primary: On-site, Secondary: Online)
[Invited Lecture] Spatial Signal Processing in Sub-Terahertz-Band Indoor Radio Communications
Yasutaka Ogawa, Toshihiko Nishimura, Takanori Sato, Junichiro Hagiwara, Takeo Ohgane (Hokkaido Univ.) RCS2022-135
The sixth-generation (6G) mobile communication system has been studied to commercialize the service in around 2030. One ... [more] RCS2022-135
p.28
RCS 2022-10-28
10:55
Ehime Ehime University, and online
(Primary: On-site, Secondary: Online)
A Study on Channel Prediction Based on Multipath Separation for Sub-Terahertz-Band Communications
Daigo Mochizuki, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Junichiro Hagiwara, Takeo Ohgane (Hokkaido Univ.) RCS2022-145
 [more] RCS2022-145
pp.83-88
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
MWPTHz, EST, MW, EMT, OPE, IEE-EMT [detail] 2022-07-19
11:15
Hokkaido Asahikawa Civic Culture Hall
(Primary: On-site, Secondary: Online)
[Invited Talk] Spatial-Domain Signal Processing in Sub-Terahertz Communications
Yasutaka Ogawa, Toshihiko Nishimura, Takeo Ohgane (Hokkaido Univ.) EMT2022-21 MW2022-45 OPE2022-24 EST2022-22 MWPTHz2022-19
The sixth-generation mobile communication is being extensively studied to commercialize the services in around 2030. A f... [more] EMT2022-21 MW2022-45 OPE2022-24 EST2022-22 MWPTHz2022-19
p.72
RCS 2022-06-16
11:05
Okinawa University of the Ryukyus, Senbaru Campus and online
(Primary: On-site, Secondary: Online)
Direction of Arrival Estimation with Compressed Sensing Using Grid Shifts
Shudai Kunimoto, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Junichiro Hagiwara, Takeo Ohgane (Hokkaido Univ.) RCS2022-47
 [more] RCS2022-47
pp.138-143
RCS 2022-06-16
11:15
Okinawa University of the Ryukyus, Senbaru Campus and online
(Primary: On-site, Secondary: Online)
Considerations on IRS Control based on Beamforming for Sub-Terahertz Band Communications
Shuto Tadokoro, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Junichiro Hagiwara, Takeo Ohgane (Hokkaido Univ.) RCS2022-48
 [more] RCS2022-48
pp.144-149
RCS 2022-06-16
14:30
Okinawa University of the Ryukyus, Senbaru Campus and online
(Primary: On-site, Secondary: Online)
Comparison of Performance and Complexity for different Search Methods in Stochastic MIMO Signal Detection
Hiroki Asumi, Yukiko Kasuga, Kazushi Matsumura, Junichiro Hagiwara, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Takeo Ohgane (Hokkaido Univ.) RCS2022-49
In large-scale MIMO signal detection, the computational complexity increases as the number of antennas increases. We hav... [more] RCS2022-49
pp.150-155
RCS 2022-06-16
14:55
Okinawa University of the Ryukyus, Senbaru Campus and online
(Primary: On-site, Secondary: Online)
A study on model parameters for MIMO signal detection using learned AMP
Mari Miyoshi, Toshihiko Nishimura, Takanori Sato, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara (Hokkaido Univ.) RCS2022-50
Approximate message passing (AMP) is applicable to massive MIMO signal detection and achieves a high detection performan... [more] RCS2022-50
pp.156-161
RCS 2022-06-17
14:00
Okinawa University of the Ryukyus, Senbaru Campus and online
(Primary: On-site, Secondary: Online)
Fundamental Considerations on Channel Prediction Based on Multipath Delay and Angle-of-Arrival Estimation for Sub-Terahertz Band Communications
Daigo Mochizuki, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Junichiro Hagiwara, Takeo Ohgane (Hokkaido Univ.) RCS2022-63
A sub-Terahertz band above 100 GHz will be used in 6G for extremely high-speed communication. In such a high frequency b... [more] RCS2022-63
pp.230-235
RCS, SIP, IT 2022-01-21
09:25
Online Online Studies on Sub-Terahertz MIMO Spatial Multiplexing in an Indoor Propagation Environment
Taichi Utsuno, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara, Takanori Sato (Hokkaido Univ.) IT2021-62 SIP2021-70 RCS2021-230
 [more] IT2021-62 SIP2021-70 RCS2021-230
pp.189-194
RCS, SIP, IT 2022-01-21
09:50
Online Online Studies on Channel Prediction in a Millimeter-Wave Band Based on Multipath Delay and Angle-of-Arrival Estimation
Daigo Mochizuki, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara, Takanori Sato (Hokkaido Univ.) IT2021-63 SIP2021-71 RCS2021-231
A multi-user MIMO system can achieve high-capacity communication using downlink channel state information (CSI) for each... [more] IT2021-63 SIP2021-71 RCS2021-231
pp.195-200
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