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Paper Abstract and Keywords
Presentation 2017-06-23 10:10
Study on Random codebook Design and its constraint for Massive SCMA Detection
Keisuke Inagaki, Takumi Takahashi, Shinsuke Ibi, Seiichi Sampei (Osaka Univ.) RCS2017-81
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a random codebook design and its constraint for Gaussian belief propagation (GaBP) in massive Sparse Code Multiple Access (SCMA). In conventional SCMA, incoming bits are directly mapped to multi-dimensional codewords selected from a predefined optimal codebook, and a massage passing algorithm (MPA) is applicable as the detection scheme for multiuser detection. As the number of transmit streams increases, however, it is difficult to design optimal codebook due to a large number of its candidates, and the complexity of MPA exponentially increases. To solve these inconvenient problems, we employ the random codebook and GaBP iterative detection, which is lower complexity MPA algorithm. To improve the convergence property of GaBP iterative detection, we proposes a novel random codebook design and its constraint. Finally, we demonstrate the validity of our proposed method, in terms of improvement of bit error rate (BER) performance.
Keyword (in Japanese) (See Japanese page) 
(in English) Massive Connections / SCMA / Soft Interference Cancellation / GaBP / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 103, RCS2017-81, pp. 185-190, June 2017.
Paper # RCS2017-81 
Date of Issue 2017-06-14 (RCS) 
ISSN Print edition: ISSN 0913-5685    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 RCS2017-81

Conference Information
Committee RCS  
Conference Date 2017-06-21 - 2017-06-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Ishigaki Shoukou Kaikan 
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 2017-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on Random codebook Design and its constraint for Massive SCMA Detection 
Sub Title (in English)  
Keyword(1) Massive Connections  
Keyword(2) SCMA  
Keyword(3) Soft Interference Cancellation  
Keyword(4) GaBP  
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1st Author's Name Keisuke Inagaki  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Takumi Takahashi  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Shinsuke Ibi  
3rd Author's Affiliation Osaka University (Osaka Univ.)
4th Author's Name Seiichi Sampei  
4th Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2017-06-23 10:10:00 
Presentation Time 10 minutes 
Registration for RCS 
Paper # RCS2017-81 
Volume (vol) vol.117 
Number (no) no.103 
Page pp.185-190 
#Pages 6 
Date of Issue 2017-06-14 (RCS) 

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