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| Paper Abstract and Keywords | ||
| Presentation | 2008-11-06 10:35 A Basic Study and Evaluations of Parallelized Low-density Generator-matrices Codes Masahiko Kitamura, Daisuke Shirai, Tatsuya Fujii (NTT)  CS2008-30 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper describes the parallelized decoding of low-density generator-matrices codes for high through rate. LDGM is a family of low-density parity-check(LDPC) codes, which proposed by Gallager and developed by Mackay and Richardson. Because LDGM codes is consist of a simple structure of encoder/decoder and its length is easy to scale, it is used very commonly as a FEC scheme at IP transmissions. This paper shows a method for getting the decoder so fast to transmit the very wide band applications by dividing the decode processing to two passes. One is the LDGM check node scanning, which scan the H matrix and decide the order of solution by check equation. Second is the XOR calculation for correcting lost symbols. In this methods, it is easy and immediate to know which lost symbol can be recovered and the number of it. Using this method, hybride-ARQ method can be efficiently applied. Before the XOR process of correcting symbols that costs much, it enable to assign check equation to the parallelized process. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Low-density parity-check(LDPC) codes / low-density generator matrices(LDGM) codes / UDP/IP / Application-layer forward error correction / parallelized decoding / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 279, CS2008-30, pp. 31-36, Nov. 2008. | |
| Paper # | CS2008-30 | |
| Date of Issue | 2008-10-30 (CS) | |
| 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 | CS2008-30 |
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| Conference Information | |
| Committee | CS |
| Conference Date | 2008-11-06 - 2008-11-07 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hotel Tsturuga, Akan, Hokkaido |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Broadband access network, Home networks, Network services, Applications using communication, etc. |
| Paper Information | |
| Registration To | CS |
| Conference Code | 2008-11-CS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Basic Study and Evaluations of Parallelized Low-density Generator-matrices Codes |
| Sub Title (in English) | |
| Keyword(1) | Low-density parity-check(LDPC) codes |
| Keyword(2) | low-density generator matrices(LDGM) codes |
| Keyword(3) | UDP/IP |
| Keyword(4) | Application-layer forward error correction |
| Keyword(5) | parallelized decoding |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Masahiko Kitamura |
| 1st Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
| 2nd Author's Name | Daisuke Shirai |
| 2nd Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
| 3rd Author's Name | Tatsuya Fujii |
| 3rd Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
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| Speaker | Author-1 |
| Date Time | 2008-11-06 10:35:00 |
| Presentation Time | 25 minutes |
| Registration for | CS |
| Paper # | CS2008-30 |
| Volume (vol) | vol.108 |
| Number (no) | no.279 |
| Page | pp.31-36 |
| #Pages | 6 |
| Date of Issue | 2008-10-30 (CS) |
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