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Paper Abstract and Keywords
Presentation 2021-08-27 14:55
Resource Allocation and Beamforming Design Considering User Fairness for Cell-Free Massive MIMO System with Dynamic TDD
Shuto Fukue (UEC), Hiroki Iimori, Giuseppe Abreu (JUB), Koji Ishibashi (UEC) RCS2021-115
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we consider a cell-free massive multiple-input multiple-output (MIMO) system, in which uplink and downlink multiple-antenna users located within the coverage area are jointly served by the system. In this context, we propose a joint design of access point (AP) allocation and beamforming, which aims to maximize the minimum achievable throughput among the users while satisfying the transmit power constraint. In order to solve this problem efficiently, we reformulate the latter as a convex optimization problem by utilizing fractional programming and entropy regularization techniques. Also, we propose a novel initialization method for the AP allocation problem based on the received signal strength so as to improve the convergence property. It is shown via simulation that the proposed algorithm reveals a reasonable compromise between the throughput and user fairness.
Keyword (in Japanese) (See Japanese page) 
(in English) cell-free massive multiple-input multiple-output, / dynamic time-division duplexing, / convex optimization / fracfractional programming / convex-concave procedure / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 153, RCS2021-115, pp. 85-90, Aug. 2021.
Paper # RCS2021-115 
Date of Issue 2021-08-19 (RCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 RCS2021-115

Conference Information
Committee RCS SAT  
Conference Date 2021-08-26 - 2021-08-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2021-08-RCS-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Resource Allocation and Beamforming Design Considering User Fairness for Cell-Free Massive MIMO System with Dynamic TDD 
Sub Title (in English)  
Keyword(1) cell-free massive multiple-input multiple-output,  
Keyword(2) dynamic time-division duplexing,  
Keyword(3) convex optimization  
Keyword(4) fracfractional programming  
Keyword(5) convex-concave procedure  
1st Author's Name Shuto Fukue  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Hiroki Iimori  
2nd Author's Affiliation Jacobs University Bremen (JUB)
3rd Author's Name Giuseppe Abreu  
3rd Author's Affiliation Jacobs University Bremen (JUB)
4th Author's Name Koji Ishibashi  
4th Author's Affiliation The University of Electro-Communications (UEC)
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Date Time 2021-08-27 14:55:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2021-115 
Volume (vol) IEICE-121 
Number (no) no.153 
Page pp.85-90 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2021-08-19 

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