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Paper Abstract and Keywords
Presentation 2008-12-11 15:00
A study on SOVA decoder for iterative decoding in perpendicular magnetic recording
Yasuaki Nakamura, Shintaro Harugaichi, Yoshihiro Okamoto, Hisashi Osawa (Ehime Univ.), Hiroaki Muraoka (Tohoku Univ.) MR2008-41
Abstract (in Japanese) (See Japanese page) 
(in English) It is an issue that the iterative decoding system using the soft-output information based on a posteriori probability (APP) requires the huge memory. In this paper, the amount of required memory and the bit error rate performance are evaluated for two kinds of systems in a perpendicular magnetic recording channel model. A low density parity check (LDPC) code obtained by interleaving the overall code words and a structured random interleaved array (RIA)-LDPC code are combined with either soft output Viterbi algorithm(SOVA) decoder or APP decoder. The results show that the system adopting the RIA-LDPC code and the SOVA decoder reduces the memory by approximately 97\% compared to the combined system of another LDPC code and the APP decoder, while the SNR degrades about 0.4dB.
Keyword (in Japanese) (See Japanese page) 
(in English) SOVA decoder / perpendicular magnetic recording / RIA-LDPC code / amount of memory / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, Dec. 2008.
Paper #  
Date of Issue 2008-12-04 (MR) 
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 MR2008-41

Conference Information
Committee MRIS ITE-MMS  
Conference Date 2008-12-11 - 2008-12-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Ehime University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To MRIS 
Conference Code 2008-12-MR-MMS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on SOVA decoder for iterative decoding in perpendicular magnetic recording 
Sub Title (in English)  
Keyword(1) SOVA decoder  
Keyword(2) perpendicular magnetic recording  
Keyword(3) RIA-LDPC code  
Keyword(4) amount of memory  
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1st Author's Name Yasuaki Nakamura  
1st Author's Affiliation Ehime University (Ehime Univ.)
2nd Author's Name Shintaro Harugaichi  
2nd Author's Affiliation Ehime University (Ehime Univ.)
3rd Author's Name Yoshihiro Okamoto  
3rd Author's Affiliation Ehime University (Ehime Univ.)
4th Author's Name Hisashi Osawa  
4th Author's Affiliation Ehime University (Ehime Univ.)
5th Author's Name Hiroaki Muraoka  
5th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-2 
Date Time 2008-12-11 15:00:00 
Presentation Time 30 minutes 
Registration for MRIS 
Paper # MR2008-41 
Volume (vol) vol.108 
Number (no) no.346 
Page pp.19-24 
#Pages 6 
Date of Issue 2008-12-04 (MR) 

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