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Paper Abstract and Keywords
Presentation 2010-06-18 14:20
A Study on Adaptive Wireless Distributed Coding using Superposition Coded Modulation
Naoyuki Takada, Shinsuke Ibi, Seiichi Sampei (Osaka Univ.) RCS2010-43
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a methodology of adaptive coding based on extrinsic information transfer (EXIT) analysis for a joint channel-superposition coding in multiple access relay channel (MARC) over uplink amplify-and-forward (AF) relaying.
In this scenario, it is reasonable to consider the transmission model as concatenated structure of channel code and superposition modulation.
This consideration brings us to a joint detection with iterative manners.
However, when a bad quality link is included in the MARC, accuracy of information detection is severely deteriorated at the destination node.
To address this problem, we focus attention on mutual information of iterative behavior in EXIT analys.
The EXIT analysis reveals a mechanism to adaptively control optimum weighting factors in the superposition coding at the relay node with the aid of knowledge on channel state information in the MARC.
Numerical results given in this paper show the adaptive weighting factor control is effective in 80$\%$ or 90$\%$ channel realizations.
Keyword (in Japanese) (See Japanese page) 
(in English) channel coding / superposition modulation coding / joint channel-superposition coding / Iterative decoding / EXIT analysis / adaptive coding / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 77, RCS2010-43, pp. 151-156, June 2010.
Paper # RCS2010-43 
Date of Issue 2010-06-10 (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)
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Conference Information
Committee RCS  
Conference Date 2010-06-17 - 2010-06-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyoto 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 2010-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Adaptive Wireless Distributed Coding using Superposition Coded Modulation 
Sub Title (in English)  
Keyword(1) channel coding  
Keyword(2) superposition modulation coding  
Keyword(3) joint channel-superposition coding  
Keyword(4) Iterative decoding  
Keyword(5) EXIT analysis  
Keyword(6) adaptive coding  
1st Author's Name Naoyuki Takada  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Shinsuke Ibi  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Seiichi Sampei  
3rd Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2010-06-18 14:20:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2010-43 
Volume (vol) vol.110 
Number (no) no.77 
Page pp.151-156 
Date of Issue 2010-06-10 (RCS) 

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