IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2025-03-05 10:20
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
Abstract (in Japanese) (See Japanese page) 
(in English) Multi-user MIMO is an effective way to use frequency resources. However in a time-varying channel environment, inter-user interference can degrade communication quality. In response to this problem, the null-space expansion method has been proposed to improve the time-varying tolerance, and its effectiveness has been confirmed. In addition, several researches have been conducted to improve the communication channel capacity of MIMO by distributing base station antennas in a cell. In this paper, we investigate the effects of element spacing and scattering ring radius on multi-user MIMO transmission assuming a base station with a 32-element configuration (8 elements x 4 locations = 32 elements in total) with distributed subarrays. Simulation results show that the performance in high-speed fading is improved by null-space expansion.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO / Null-space expansion / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 409, RCS2024-258, pp. 13-18, March 2025.
Paper # RCS2024-258 
Date of Issue 2025-02-26 (RCS) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF RCS2024-258

Conference Information
Committee RCS SR SRW  
Conference Date 2025-03-05 - 2025-03-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyoto Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2025-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance evaluation of subarray-distributed MU-MIMO using null-space expansion 
Sub Title (in English) Effect of element space and scattering radius 
Keyword(1) MIMO  
Keyword(2) Null-space expansion  
Keyword(3)  
Keyword(4)  
Keyword(5)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Masaharu Abiru  
1st Author's Affiliation Fukuoka University (Fukuoka Univ.)
2nd Author's Name Makoto Taromaru  
2nd Author's Affiliation Fukuoka University (Fukuoka Univ.)
3rd Author's Name Hidekazu Murata  
3rd Author's Affiliation Yamaguchi University (Yamaguchi Univ.)
4th Author's Name Tatsuhiko Iwakuni  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
5th Author's Name Daisei Uchida  
5th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
6th Author's Name Takafumi Fujita  
6th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-1 
Date Time 2025-03-05 10:20:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2024-258 
Volume (vol) vol.124 
Number (no) no.409 
Page pp.13-18 
#Pages 6 
Date of Issue 2025-02-26 (RCS) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan