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Paper Abstract and Keywords
Presentation 2015-06-26 09:40
Downlink NOMA Scheme with SIC Using Unified User Grouping for Non-orthogonal User Multiplexing and Decoding Order
Keita Yakou, Kenichi Higuchi (Tokyo Univ. of Science) RCS2015-85
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we investigate practical methods for user grouping and setting of decoding order in a successive interference canceller (SIC) for downlink non-orthogonal multiple access (NOMA). While the optimal user grouping and decoding order depending on the instantaneous channel conditions among users within a cell is assumed in previous works, the proposed method uses user grouping and decoding order which is unified among all frequency blocks. The decoding order in SIC enables the application of NOMA with SIC to the system where all the elements within a codeword for a user are distributed among multiple frequency blocks (resource blocks) in frequency-selective fading channel. The unified user grouping alleviates the complexity in SIC process at the user terminal. The unified user grouping also achieves the reduction in complexity of the efficient downlink control signaling in NOMA with SIC. The unified user grouping and decoding order among frequency blocks in principle reduce the achievable throughput compared to the optimal one. However, from the numerical results, we show that the proposed method does not harm the system-level throughput significantly in downlink cellular network.
Keyword (in Japanese) (See Japanese page) 
(in English) Downlink / Non-orthogonal multiple access / NOMA / SIC / User grouping / Decoding order / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 113, RCS2015-85, pp. 229-234, June 2015.
Paper # RCS2015-85 
Date of Issue 2015-06-17 (RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee RCS  
Conference Date 2015-06-24 - 2015-06-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2015-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Downlink NOMA Scheme with SIC Using Unified User Grouping for Non-orthogonal User Multiplexing and Decoding Order 
Sub Title (in English)  
Keyword(1) Downlink  
Keyword(2) Non-orthogonal multiple access  
Keyword(3) NOMA  
Keyword(4) SIC  
Keyword(5) User grouping  
Keyword(6) Decoding order  
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1st Author's Name Keita Yakou  
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 2015-06-26 09:40:00 
Presentation Time 8 minutes 
Registration for RCS 
Paper # RCS2015-85 
Volume (vol) vol.115 
Number (no) no.113 
Page pp.229-234 
#Pages
Date of Issue 2015-06-17 (RCS) 


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