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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 56  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
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.)
 [more]
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)
 [more]
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.)
 [more]
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.)
 [more]
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.)
 [more]
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 Communications
Daigo Mochizuki, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Junichiro Hagiwara, Takeo Ohgane (Hokkaido Univ.) RCS2022-145
 [more] RCS2022-145
pp.83-88
RCS 2022-06-16
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
RCS 2021-06-23
09:30
Online Online Considerations on computational complexity reduction in channel prediction based on multipath separation
Daigo Mochizuki, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara, Takanori Sato (Hokkaido Univ.) RCS2021-29
In multi-user MIMO systems, a base station suppresses inter-user-interferences using downlink channel state information ... [more] RCS2021-29
pp.1-6
RCS 2021-06-23
09:40
Online Online A Comparison of Variational Bayesian and Expectation Propagation Methods for Massive MIMO Signal Detection
Hiroki Asumi, Junichiro Hagiwara, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Takanori Sato (Hokkaido Univ.) RCS2021-30
Signal detection in massive MIMO has difficulty in reducing computational complexity as the number of antennas increases... [more] RCS2021-30
pp.7-12
RCS 2021-06-23
09:50
Online Online A basic study on signal detection using learned approximate message passing
Mari Miyoshi, Wakaba Tsujimoto, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara, Takanori Sato (Hokkaido Univ.) RCS2021-31
Approximate message passing (AMP) is applicable to massive MIMO signal detection and achieves a high detection performan... [more] RCS2021-31
pp.13-18
RCS 2021-06-23
16:35
Online Online A Study on the Behavior of LLR messages in Damped GaBP for Large-scale Signal Detection under a Correlated Channel
Daniel Akira Ando, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara, Takanori Sato (Hokkaido Univ.) RCS2021-45
For large-scale signal detection, Gaussian Belief Propagation (GaBP) is known as a method providing a near-optimal perfo... [more] RCS2021-45
pp.97-102
RCS, SR, SRW
(Joint)
2021-03-05
17:20
Online Online [Encouragement Talk] A Study on Downlink Channel Estimation Based on Multipath Separation in a Wideband FDD System
Shiori Tosaka, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara, Takanori Sato (Hokkaido Univ.) RCS2020-261
In an FDD system, downlink channel state information (CSI) is necessary at a base station for efficient transmission.
T... [more]
RCS2020-261
pp.267-272
SIP, IT, RCS 2021-01-21
13:10
Online Online Performance Evaluation of Loose Beamforming for Different Receiver Numbers
Tatsuki Otsuka, Toshihiko Nishimura, Takeo Ohgane, Takanori Sato, Junichiro Hagiwara, Yasutaka Ogawa (Hokkaido Univ.) IT2020-76 SIP2020-54 RCS2020-167
 [more] IT2020-76 SIP2020-54 RCS2020-167
pp.75-80
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