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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 191  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
MWPTHz, EST, MW, EMT, OPE, IEE-EMT [detail] 2022-07-19
11:05
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.)
(To be available after the conference date) [more]
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
 [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
 [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, SIP, IT 2022-01-21
11:45
Online Online Study on compensation for axis misalignment of UCA with multiple UCAs
Nobuhiko Sakuraya, Toshihiko Nishimura, Takeo Ohgane (Hokkaido Univ), Tomoya Tandai, Daisuke Uchida (Toshiba) IT2021-76 SIP2021-84 RCS2021-244
In recent years, mobile data traffic has increased explosively due to increasing wireless devices. Capacity enhancement ... [more] IT2021-76 SIP2021-84 RCS2021-244
pp.270-275
RCS, SR, NS, SeMI, RCC
(Joint)
2021-07-15
11:20
Online Online Information Box Placing Method for Power Consumption Reduction in Disaster Communication Using DTN
Makoto Misumi, Toshihiko Nishimura (Fukuoka Univ.), Noriaki Kamiyama (Ritsumeikan Univ.) NS2021-45
In a large-scale disaster such as an earthquake, it is necessary to evacuate quickly and safely. For this purpose, it is... [more] NS2021-45
pp.69-74
RCS, SR, NS, SeMI, RCC
(Joint)
2021-07-16
14:30
Online Online Considerations on Accuracy Improvement in Close DOA Estimation with Deep Learning
Yuya Kase, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Takanori Sato (Hokkaido Univ.), Yoshihisa Kishiyama (NTT DOCOMO) RCC2021-39 NS2021-55 RCS2021-97 SR2021-39 SeMI2021-28
In addition to subspace methods such as MUSIC and ESPRIT, recently,
compressed sensing and deep learning have been appl... [more]
RCC2021-39 NS2021-55 RCS2021-97 SR2021-39 SeMI2021-28
pp.77-82(RCC), pp.118-123(NS), pp.98-103(RCS), pp.100-105(SR), pp.76-81(SeMI)
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
16:55
Online Online Compensation for axis misalignment of UCA with OAM beam control
Nobuhiko Sakuraya, Toshihiko Nishimura, Takeo Ohgane (Hokkaido Univ), Tomoya Tandai, Daisuke Uchida (Toshiba) RCS2020-260
In recent years, mobile data traffic has increased explosively due to increasing wireless devices. Capacity enhancement ... [more] RCS2020-260
pp.261-266
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
NS, RCS
(Joint)
2020-12-17
11:25
Online Online Improvement on Signal Detection Performance with HMC in Massive MIMO
Kazushi Matsumura, Junichiro Hagiwara, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Takanori Sato (Hokkaido Univ.) RCS2020-135
In massive MIMO, a new technology for wireless transmission, various approaches to reduce the computational complexity a... [more] RCS2020-135
pp.7-12
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
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