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Paper Abstract and Keywords
Presentation 2021-08-27 14:30
Antenna Configuration and Robust Receiver Design for Scalable Cell-Free Massive MIMO with Capacity Limited Fronthaul
Kengo Ando (UEC), Hiroki Iimori, Giuseppe Abreu (JUB), Takumi Takahashi (Osaka Univ), Koji Ishibashi (UEC) RCS2021-114
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we investigate an uplink signal detection problem in scalable cell-free massive multiple input multiple output (CF-mMIMO) systems subject to capacity-limited fronthaul links. We propose highly-reliable two receiver designs, which can mitigate the effects of capacity-limited fronthaul links by making use of the heteroscedastic covariance matrix of the equivalent noise. The first receiver based on an expectation propagation framework requires a higher computational burden but yields the best performance. The second receiver based on a generalized least square (GLS) variation of the discreteness-aware maximum likelihood (ML) estimation achieves significant reduction in the computational complexity with only slight performance degradation compared to the first one. Simulation results demonstrate the superior performance of our proposed receiver designs in comparison to the conventional receiver designs in terms of bit error rate.
Keyword (in Japanese) (See Japanese page) 
(in English) Uplink Cell-Free Massive MIMO / Receiver Design / Discreteness Aware / Expectation Propagation / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 153, RCS2021-114, pp. 79-84, Aug. 2021.
Paper # RCS2021-114 
Date of Issue 2021-08-19 (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 RCS2021-114

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) Antenna Configuration and Robust Receiver Design for Scalable Cell-Free Massive MIMO with Capacity Limited Fronthaul 
Sub Title (in English)  
Keyword(1) Uplink Cell-Free Massive MIMO  
Keyword(2) Receiver Design  
Keyword(3) Discreteness Aware  
Keyword(4) Expectation Propagation  
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1st Author's Name Kengo Ando  
1st Author's Affiliation The University of Electro-commnucations (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 Takumi Takahashi  
4th Author's Affiliation Osaka University (Osaka Univ)
5th Author's Name Koji Ishibashi  
5th Author's Affiliation The University of Electro-communications (UEC)
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Speaker Author-1 
Date Time 2021-08-27 14:30:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2021-114 
Volume (vol) vol.121 
Number (no) no.153 
Page pp.79-84 
#Pages 6 
Date of Issue 2021-08-19 (RCS) 

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