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Paper Abstract and Keywords
Presentation 2022-04-22 10:55
Capacity-Fairness Tradeoff-aware Optimal Power Allocation for Cluster-wise Distributed MU-MIMO System
Sijie Xia, Chang Ge, Qiang Chen, Fumiyuki Adachi (Tohoku Univ.) RCS2022-7
Abstract (in Japanese) (See Japanese page) 
(in English) According to the ever-increasing mobile data traffic, ultra-dense distributed antenna system is recommended to support the 5G-advanced system. To mitigate the prohibitively high computational complexity of ultra-dense network, user-clustering is introduced into distributed multiuser multi-input multi-output (MU-MIMO) system and to perform cluster-wise MU-MIMO communication in parallel. However, user-clustering leads to a capacity degradation due to the inter-cluster-interference. Reasonable power allocation strategy can make up this capacity degradation. In our previous study, a sum capacity maximization-based power allocation strategy was proposed while guaranteeing the minimum user capacity under the total transmit power constraint. The user fairness is also a big issue. In this paper, we propose an optimal power allocation (OPA) method which can flexibly tradeoff the sum capacity and the user fairness while guaranteeing the minimum user capacity under the total transmit power constraint. Moreover, we utilize the weighted sum method which integrates two objectives into one. The simulation results show that the proposed power allocation can effectively control a tradeoff between the sum capacity and the user fairness while guaranteeing the minimum user capacity.
Keyword (in Japanese) (See Japanese page) 
(in English) 5G-advanced / ultra-dense network / distributed antenna system / clustering / power allocation / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 6, RCS2022-7, pp. 30-34, April 2022.
Paper # RCS2022-7 
Date of Issue 2022-04-14 (RCS) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee RCS  
Conference Date 2022-04-21 - 2022-04-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Osaka University, and online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Radio Access Technologies, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2022-04-RCS 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Capacity-Fairness Tradeoff-aware Optimal Power Allocation for Cluster-wise Distributed MU-MIMO System 
Sub Title (in English)  
Keyword(1) 5G-advanced  
Keyword(2) ultra-dense network  
Keyword(3) distributed antenna system  
Keyword(4) clustering  
Keyword(5) power allocation  
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1st Author's Name Sijie Xia  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Chang Ge  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Qiang Chen  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
4th Author's Name Fumiyuki Adachi  
4th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2022-04-22 10:55:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2022-7 
Volume (vol) vol.122 
Number (no) no.6 
Page pp.30-34 
#Pages
Date of Issue 2022-04-14 (RCS) 


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