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Paper Abstract and Keywords
Presentation 2023-06-15 17:55
A Study on AP Antenna Configuration for Cell-Free Massive MIMO with Hybrid Beamforming in the Upper-mid Band.
Shunsuke Kamiwatari, Masaaki Ito, Issei Kanno (KDDI Research, Inc.) RCS2023-64
Abstract (in Japanese) (See Japanese page) 
(in English) Cell-Free massive multi-input multi-output (CF mMIMO) is a candidate foundation for the sixth-generation (6G). In addition to the frequency band used in the fifth-generation new radio, the use of the frequency band around 7 to 20 GHz, called the upper-mid band, is also being considered for 6G. In such a frequency band, a hybrid beamforming (BF) architecture, which combines digital and analog BF, has been employed considering the power consumption and implementation cost of base stations. In this paper, we evaluate the impact of the antenna configuration on the spectral efficiency for CF mMIMO access points (APs) with hybrid BF in the upper-mid band. Specifically, the central processing unit performs digital BF, and each AP, equipped with multiple radio frequency chains and array antennas, performs analog BF using a connected array antenna. Through simulations, we clarify the effects of the sub-array configuration on the spectral efficiency for CF mMIMO in the upper-mid band.
Keyword (in Japanese) (See Japanese page) 
(in English) Cell-Free massive MIMO / hybrid beamforming / upper-mid band / AP clustering / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 76, RCS2023-64, pp. 212-217, June 2023.
Paper # RCS2023-64 
Date of Issue 2023-06-07 (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 RCS2023-64

Conference Information
Committee RCS  
Conference Date 2023-06-14 - 2023-06-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido University, and online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Resource Control, Scheduling, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2023-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on AP Antenna Configuration for Cell-Free Massive MIMO with Hybrid Beamforming in the Upper-mid Band. 
Sub Title (in English)  
Keyword(1) Cell-Free massive MIMO  
Keyword(2) hybrid beamforming  
Keyword(3) upper-mid band  
Keyword(4) AP clustering  
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1st Author's Name Shunsuke Kamiwatari  
1st Author's Affiliation KDDI Research, Inc. (KDDI Research, Inc.)
2nd Author's Name Masaaki Ito  
2nd Author's Affiliation KDDI Research, Inc. (KDDI Research, Inc.)
3rd Author's Name Issei Kanno  
3rd Author's Affiliation KDDI Research, Inc. (KDDI Research, Inc.)
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Speaker Author-1 
Date Time 2023-06-15 17:55:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2023-64 
Volume (vol) vol.123 
Number (no) no.76 
Page pp.212-217 
#Pages 6 
Date of Issue 2023-06-07 (RCS) 

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