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| Presentation | 2011-09-30 11:10 Efficient Encoding for Quasi-Cyclic LDPC Codes with Rank Deficient Parity Check Matrices Haruka Obata, Hironori Uchikawa (Toshiba)  IT2011-29 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper presents an efficient encoding method for quasi-cyclic low-density parity-check (QC-LDPC) codes with rank deficient parity check matrices. In general, QC-LDPC codes can be encoded with simple shift registers. However, when QC-LDPC codes with rank deficient parity check matrices are encoded based on Richardson and Urbanke (R&U) method which is one of the most efficient encoding methods, the encoder cannot be implemented with shift registers because these generator matrices are not in circulant forms. By allowing generator matrices in semi-systematic forms, the proposed method provides about 30 percent reduction of the encoding complexity by using R&U method so that the generator matrices remain in circulant forms. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Quasi-cyclic low-densiy parity-check code / encoder / rank deficient parity check matrix / Richardson and Urbanke method / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 220, IT2011-29, pp. 35-40, Sept. 2011. | |
| Paper # | IT2011-29 | |
| Date of Issue | 2011-09-22 (IT) | |
| 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 | IT2011-29 |
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| Conference Information | |
| Committee | IT |
| Conference Date | 2011-09-29 - 2011-09-30 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | IT |
| Conference Code | 2011-09-IT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Efficient Encoding for Quasi-Cyclic LDPC Codes with Rank Deficient Parity Check Matrices |
| Sub Title (in English) | |
| Keyword(1) | Quasi-cyclic low-densiy parity-check code |
| Keyword(2) | encoder |
| Keyword(3) | rank deficient parity check matrix |
| Keyword(4) | Richardson and Urbanke method |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Haruka Obata |
| 1st Author's Affiliation | Toshiba Corporation (Toshiba) |
| 2nd Author's Name | Hironori Uchikawa |
| 2nd Author's Affiliation | Toshiba Corporation (Toshiba) |
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| Speaker | Author-1 |
| Date Time | 2011-09-30 11:10:00 |
| Presentation Time | 25 minutes |
| Registration for | IT |
| Paper # | IT2011-29 |
| Volume (vol) | vol.111 |
| Number (no) | no.220 |
| Page | pp.35-40 |
| #Pages | 6 |
| Date of Issue | 2011-09-22 (IT) |
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