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Paper Abstract and Keywords
Presentation 2020-12-18 15:00
Dynamic TDD Allocation via Fractional Programming for Cell-Free Massive MIMO Systems
Shuto Fukue (UEC), Hiroki Iimori, Giuseppe Abreu (Jacobs Univ. Bremen), Koji Ishibashi (UEC) RCS2020-151
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we consider a user-centric spacial resource management problem for cell-free massive MIMO architectures with the dynamic TDD access protocol. In order to solve this challenging issue, we propose a joint access point switching and beamforming design aiming at maximizing the system throughput, which is enabled by means of fractional programming and an entropy regularizer. Simulation results illustrate that the proposed scheme flexibly acts as a compromise between fully uplink and downlink TDD systems, outperforming the latter two conventional approaches.
Keyword (in Japanese) (See Japanese page) 
(in English) Cell-free massive multiple-input multiple-output / dynamic time-division duplexing / convex optimization / fractional programming / convex-concave procedure / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 298, RCS2020-151, pp. 91-96, Dec. 2020.
Paper # RCS2020-151 
Date of Issue 2020-12-10 (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 RCS2020-151

Conference Information
Committee NS RCS  
Conference Date 2020-12-17 - 2020-12-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Multi-hop/Relay/Cooperation, Disaster-resistant wireless network, Sensor/Mesh network, Ad-hoc network, D2D/M2M, Wireless network coding, Handover/AP switching/Connected cell control/Load balancing among base stations/Mobile network dynamic reconfiguration, QoS/QoE assurance, Wireless VoIP, IoT, Edge computing, etc. 
Paper Information
Registration To RCS 
Conference Code 2020-12-NS-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Dynamic TDD Allocation via Fractional Programming for Cell-Free Massive MIMO Systems 
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) fractional 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 (Jacobs Univ. Bremen)
3rd Author's Name Giuseppe Abreu  
3rd Author's Affiliation Jacobs University Bremen (Jacobs Univ. Bremen)
4th Author's Name Koji Ishibashi  
4th Author's Affiliation The University of Electro-Communications (UEC)
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Date Time 2020-12-18 15:00:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2020-151 
Volume (vol) IEICE-120 
Number (no) no.298 
Page pp.91-96 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2020-12-10 

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