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Paper Abstract and Keywords
Presentation 2024-04-26 10:20
Extended Angle-Domain Beam Grouping-Based Beam Selection for Massive MIMO Analog Beamforming Using NOMA in Cellular Downlink
Nobuhide Nonaka, Kenichi Higuchi (Tokyo Univ. of Science) RCS2024-8
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we consider an appropriate beam selection method in downlink massive multiple-input multiple-output (mMIMO) analog beamforming (BF) with non-orthogonal multiple access (NOMA) based on the intra-beam superposition coding. In order to obtain a sufficient system-level throughput gain by employing NOMA in downlink mMIMO with analog BF, it is important to select beams each of which has many of appropriate users to be non-orthogonally multiplexed while mitigating the interference among simultaneously selected beams. We previously reported the beam selection method based on the angle-domain beam grouping (ADG), which utilizes a beam-group which contains multiple neighboring-angle beams. ADG selects beams which is appropriate for applying NOMA by considering the neighboring beams as well as the candidate beam itself during the beam selection process. ADG is also effective for reduction in inter-beam interference since only a single beam is selected from each beam-group. In this paper, ADG is extended for generalization for more flexible parameter optimization considering both the NOMA and inter-beam interference aspects. Furthermore, we apply a weighted proportional fair metric for the beam selection, in order to control of tradeoff between the system efficiency and user fairness. Computer simulation results show that the extended ADG significantly improves the user fairness while maintaining the system efficiency compare to the conventional methods.
Keyword (in Japanese) (See Japanese page) 
(in English) Non-orthogonal multiple access / NOMA / SIC / Massive MIMO / Analog beamforming / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 9, RCS2024-8, pp. 38-45, April 2024.
Paper # RCS2024-8 
Date of Issue 2024-04-18 (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 RCS2024-8

Conference Information
Committee RCS  
Conference Date 2024-04-25 - 2024-04-26 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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 2024-04-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Extended Angle-Domain Beam Grouping-Based Beam Selection for Massive MIMO Analog Beamforming Using NOMA in Cellular Downlink 
Sub Title (in English)  
Keyword(1) Non-orthogonal multiple access  
Keyword(2) NOMA  
Keyword(3) SIC  
Keyword(4) Massive MIMO  
Keyword(5) Analog beamforming  
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Keyword(8)  
1st Author's Name Nobuhide Nonaka  
1st Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
2nd Author's Name Kenichi Higuchi  
2nd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
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Speaker Author-1 
Date Time 2024-04-26 10:20:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2024-8 
Volume (vol) vol.124 
Number (no) no.9 
Page pp.38-45 
#Pages 8 
Date of Issue 2024-04-18 (RCS) 

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