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Paper Abstract and Keywords
Presentation 2007-10-05 09:00
A Study on QC-LDPC codes with girth 8 or 10 for broadband communications
Wataru Matsumoto, Yoshikuni Miyata, Hideo Yoshida (Mitsubishi Electric) CS2007-27
Abstract (in Japanese) (See Japanese page) 
(in English) In this correspondence, the construction of quasi-cyclic low density parity check(QC-LDPC) codes and
is investigated. It is shown that conditions for the codes to
have a girth $g \ge 8$ or $g \ge 10$ are derived. These results suggest that families of QC-LDPC codes
with girth $g \ge 8$ or $g \ge 10$ are relatively easy to obtain. Furthermore examples of specific constructions
with girth $g \ge 8$ or $g \ge 10$ are provided under the appropriate codeword length from several hundred to
several thousand bits for broadband communication.
Keyword (in Japanese) (See Japanese page) 
(in English) low-density parity-check code / quasi-cyclic codes / girth / / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 244, CS2007-27, pp. 31-35, Oct. 2007.
Paper # CS2007-27 
Date of Issue 2007-09-27 (CS) 
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 CS2007-27

Conference Information
Committee CS  
Conference Date 2007-10-04 - 2007-10-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokachigawa, Hokkaido 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Broadband access network, home networks, etc. 
Paper Information
Registration To CS 
Conference Code 2007-10-CS 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on QC-LDPC codes with girth 8 or 10 for broadband communications 
Sub Title (in English)  
Keyword(1) low-density parity-check code  
Keyword(2) quasi-cyclic codes  
Keyword(3) girth  
1st Author's Name Wataru Matsumoto  
1st Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
2nd Author's Name Yoshikuni Miyata  
2nd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
3rd Author's Name Hideo Yoshida  
3rd Author's Affiliation Mitsubishi Electric Corporation (Mitsubishi Electric)
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Date Time 2007-10-05 09:00:00 
Presentation Time 25 minutes 
Registration for CS 
Paper # CS2007-27 
Volume (vol) vol.107 
Number (no) no.244 
Page pp.31-35 
Date of Issue 2007-09-27 (CS) 

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