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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 77  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS, AP, UWT
(Joint)
2022-11-16
09:30
Fukuoka Kyushu University, and Online
(Primary: On-site, Secondary: Online)
A behavior of user-driven multiuser joint transmit-receive diversity in an asymmetric MIMO fading channel
Fumiyuki Adachi, Ryo Takahashi (Tohoku Univ.)
 [more]
RCS, AP, UWT
(Joint)
2022-11-17
09:55
Fukuoka Kyushu University, and Online
(Primary: On-site, Secondary: Online)
A Study of Optimal Perturbation Vector Search Using Quantum Computing in Vector Perturbation Introducing Symmetry when Using MMSE Norms
Keishi Hanakago, Ryo Takahashi, Takahiro Ohyama (PSNRD), Fumiyuki Adachi (Tohoku Univ.)
 [more]
RCS 2022-10-28
10:15
Ehime Ehime University, and online
(Primary: On-site, Secondary: Online)
A Study on Interference Suppression ZF-based MU-MIMO for Cluster-Centric Cell-Free Massive MIMO Systems
Sijie Xia, Chang Ge, Ryo Takahashi, Qiang Chen, Fumiyuki Adachi (Tohoku Univ.)
 [more]
SAT, RCS
(Joint)
2022-08-25
11:15
Hokkaido
(Primary: On-site, Secondary: Online)
Channel Segregation and Multi-Subband Assignment for Inter-Cell Interference Coordination in Ultra-dense RAN
Hidenori Matsuo, Ryo Takahashi, Fumiyuki Adachi (Tohoku Univ.) RCS2022-100
Ultra-high-density radio access network (RAN) with many distributed antennas in a base station area (cell) are considere... [more] RCS2022-100
pp.18-23
SAT, RCS
(Joint)
2022-08-25
11:40
Hokkaido
(Primary: On-site, Secondary: Online)
A Study on Computational Complexity Reduction of Pre/Postcoding in User-Cluster-Centric CF-mMIMO
Ryo Takahashi, Hidenori Matsuo, Sijie Xia, Qiang Chen, Fumiyuki Adachi (Tohoku Univ.) RCS2022-101
Cell-Free massive MIMO (CF-mMIMO), which cooperatively utilizes a large number of antennas deployed over a wide communic... [more] RCS2022-101
pp.24-29
SAT, RCS
(Joint)
2022-08-25
12:05
Hokkaido
(Primary: On-site, Secondary: Online)
A study on user-driven suboptimal joint transmit-receive diversity
Fumiyuki Adachi, Ryo Takahashi (Tohoku Univ.) RCS2022-102
In user-driven suboptimal joint transmit-receive diversity (JTRD), firstly the user equipment (UE) determines its divers... [more] RCS2022-102
pp.30-35
NS, SR, RCS, SeMI, RCC
(Joint)
2022-07-14
11:20
Ishikawa The Kanazawa Theatre + Online
(Primary: On-site, Secondary: Online)
A Study of Quantum Computing-based Cluster-Layering Method in Distributed Antenna Networks
Keishi Hanakago, Ryo Takahashi, Takahiro Ohyama (PSNRD), Fumiyuki Adachi (Tohoku Univ.) RCS2022-82
In distributed antenna networks, where a large number of antennas are deployed in a communication service area, distribu... [more] RCS2022-82
pp.66-71
RCS 2022-06-15
10:20
Okinawa University of the Ryukyus, Senbaru Campus and online
(Primary: On-site, Secondary: Online)
A Study on Uplink Postcoding in User-Centric and User-Cluster-Centric CF-mMIMO
Ryo Takahashi, Hidenori Matsuo, Sijie Xia, Qiang Chen, Fumiyuki Adachi (Tohoku Univ.) RCS2022-26
Cell-Free massive MIMO (CF-mMIMO), which cooperatively utilizes a large number of antennas deployed over a wide communic... [more] RCS2022-26
pp.13-18
IN, RCS, NV
(Joint)
2022-05-26
09:55
Kanagawa Keio University (Hiyoshi Campus)
(Primary: On-site, Secondary: Online)
Incorporation of MU-MIMO Technology into User-centric Cell-Free mMIMO System
Sijie Xia, Chang Ge, Ryo Takahashi, Qiang Chen, Fumiyuki Adachi (Tohoku Univ.) RCS2022-14
Recently, cell-free massive multiple-input-multiple-output (CF-mMIMO) system has been attracting a great attention. CF-m... [more] RCS2022-14
pp.7-12
RCS, SR, SRW
(Joint)
2022-03-02
15:20
Online Online Cellular Distributed MU-MIMO Communication System -- Architecture Design and Interference Countermeasure --
Fumiyuki Adachi, Ryo Takahashi, Hidenori Matsuo, Sijie Xia, Chang Ge, Qiang Chen (Tohoku U.) RCS2021-269
In ultra-dense mobile radio communication systems, severe co-channel interference is produced by reusing the same radio ... [more] RCS2021-269
pp.96-101
MI 2022-01-25
16:37
Online Online [Short Paper] Recognition of teeth and dental prostheses in dental panoramic radiographs using multi-label detection
Takumi Morishita (Gifu Univ.), Chisako Muramatsu (Shiga Univ.), Ryo Takahashi, Tatsuro Hayashi (media), Yuta Seino (Gifu Univ.), Wataru Nishiyama (Asahi Univ.), Xiangrong Zhou, Takeshi Hara (Gifu Univ.), Akitoshi Katsumata (Asahi Univ.), Hiroshi Fujita (Gifu Univ.) MI2021-51
The purpose of this study is to analyze dental panoramic radiographs for completing dental files to contribute to the di... [more] MI2021-51
pp.37-38
RCS, SIP, IT 2022-01-21
13:30
Online Online Improved Adaptive Interference/Radio Resource Management for 5G Advanced Ultra-dense RAN
Ryo Takahashi, Hidenori Matsuo, Fumiyuki Adachi (Tohoku Univ.) IT2021-77 SIP2021-85 RCS2021-245
In order to solve an interference problem in multi-user MIMO (MU-MIMO) systems using distributed antennas, the authors h... [more] IT2021-77 SIP2021-85 RCS2021-245
pp.276-281
RCS, NS
(Joint)
2021-12-17
11:25
Nara Nara-ken Bunka Kaikan and Online
(Primary: On-site, Secondary: Online)
A Study on User Scheduling for Overloaded Environment in Distributed Antenna Network Using Quantum Computing
Keishi Hanakago, Ryo Takahashi, Takahiro Ohyama (PSNRD), Fumiyuki Adachi (Tohoku Univ.) RCS2021-189
In a distributed antenna network, a large number of antennas are distributed over a base station coverage area (cell). H... [more] RCS2021-189
pp.75-80
AP, RCS
(Joint)
2021-11-11
11:45
Nagasaki NBC-Bekkan (Nagasaki)
(Primary: On-site, Secondary: Online)
A recursive solution of joint transmit-receive diversity weight vectors
Fumiyuki Adachi, Ryo Takahashi (Tohoku U.) RCS2021-161
Optimal joint transmit-receive diversity (JTRD) is a type of multi-input multi-output (MIMO) spatial diversity technique... [more] RCS2021-161
pp.98-103
RCS 2021-10-21
14:50
Online Online [Invited Talk] Generalization of a joint transmit-receive diversity and its application to multi-user MIMO communications
Fumiyuki Adachi, Ryo Takahashi (Tohoku Univ.) RCS2021-126
In this paper, joint transmit-receiver diversity (JTRD) is presented, which jointly perform transmit diversity and recei... [more] RCS2021-126
pp.49-54
RCS, SR, NS, SeMI, RCC
(Joint)
2021-07-14
09:00
Online Online A Study on Inter-Cluster Interference Coordination for Distributed Antenna Network Using Quantum Computing
Keishi Hanakago, Ryo Takahashi, Takahiro Ohyama (PSNRD), Fumiyuki Adachi (Tohoku Univ.) RCS2021-77
In a large-scale distributed antenna network, where a large number of antennas are deployed over a base station coverage... [more] RCS2021-77
pp.1-6
RCS, SR, NS, SeMI, RCC
(Joint)
2021-07-14
09:25
Online Online On Cellular Structure for Ultra-dense Distributed Antenna-based 5G-advanced Systems
Sijie Xia, Chang Ge, Ryo Takahashi, Qiang Chen, Fumiyuki Adachi (Tohoku Univ.) RCS2021-78
Compared with the traditional cellular structure based on centralized antennas, the distributed antenna-based cellular s... [more] RCS2021-78
pp.7-12
RCS, SR, NS, SeMI, RCC
(Joint)
2021-07-14
09:50
Online Online A Study on The Effect of Correlated Fading on Joint Transmit-receive Diversity and MIMO Spatial Multiplexing
Fumiyuki Adachi, Ryo Takahashi (Tohoku Univ.) RCS2021-79
Joint transmit-receive diversity (JTRD) is one of diversity techniques to mitigate the degradation of communication qual... [more] RCS2021-79
pp.13-18
RCS 2021-06-25
14:00
Online Online A Theoretical Study on Suboptimal Joint Transmit-Receive Diversity In Correlated Rayleigh Fading Channels
Fumiyuki Adachi, Ryo Takahashi (Tohoku Univ.) RCS2021-73
Joint transmit-receive diversity (JTRD) jointly optimizes transmitter and receiver diversity weight vectors to maximize ... [more] RCS2021-73
pp.255-260
RCS 2021-04-22
11:20
Online Online A Study on Impact of User-side Fading Correlation on Multi-user Joint Transmit/Receive Diversity
Fumiyuki Adachi, Ryo Takahashi (Tohoku Univ.) RCS2021-3
Multi-user joint transmit/receive diversity (JTRD) is able to perform multiuser multiplexing while achieving spatial div... [more] RCS2021-3
pp.11-16
 Results 1 - 20 of 77  /  [Next]  
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