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Paper Abstract and Keywords
Presentation 2021-11-10 16:45
QoS-aware Low-complexity User Pairing Based on Compressed Sensing in Downlink NOMA(2)
Tomofumi Makita, Osamu Muta (Kyushu Univ.) RCS2021-155
Abstract (in Japanese) (See Japanese page) 
(in English) Downlink non-orthogonal multiple access (NOMA) systems with successive interference cancellation requires an effective user paring strategy that assigns proper user-pair to the same resource block. The authors has proposed a quality-of-service (QoS)-aware low complexity compressed sensing (CS)-based user pairing and power allocation scheme for downlink non-orthogonal multiple access (NOMA) systems, where the tolerable interference threshold constraint is mathematically designed to achieve a given QoS requirement. Based on the fact that selecting a user-pair among all users is treated as a `sparse’ situation, joint user selection and power allocation problem is relaxed to $l_1$ norm optimization problem under a QoS constraint based on the tolerable interference threshold, which can be solved by general CS algorithm. In this paper, We propose an adaptive resource block (RB) selection algorithm for CS-based user pairing and power allocation: two-step opportunistic resource block assignment (TS-RA). Simulation results show that the proposed scheme with TS-RA is effective in improving user-rate compared with other reference schemes even when each RB is affected by independent fading while the QoS requirement is approximately satisfied as long as the required QoS value is feasible.
Keyword (in Japanese) (See Japanese page) 
(in English) Non-orthogonal multiple access (NOMA) / user pairing / power allocation / compressed sensing / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 234, RCS2021-155, pp. 63-68, Nov. 2021.
Paper # RCS2021-155 
Date of Issue 2021-11-03 (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 RCS2021-155

Conference Information
Committee AP RCS  
Conference Date 2021-11-10 - 2021-11-12 
Place (in Japanese) (See Japanese page) 
Place (in English) NBC-Bekkan (Nagasaki) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2021-11-AP-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) QoS-aware Low-complexity User Pairing Based on Compressed Sensing in Downlink NOMA(2) 
Sub Title (in English)  
Keyword(1) Non-orthogonal multiple access (NOMA)  
Keyword(2) user pairing  
Keyword(3) power allocation  
Keyword(4) compressed sensing  
1st Author's Name Tomofumi Makita  
1st Author's Affiliation Kyushu University (Kyushu Univ.)
2nd Author's Name Osamu Muta  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
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Date Time 2021-11-10 16:45:00 
Presentation Time 25 
Registration for RCS 
Paper # RCS2021-155 
Volume (vol) 121 
Number (no) no.234 
Page pp.63-68 
Date of Issue 2021-11-03 (RCS) 

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