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| Presentation | 2010-03-04 11:40 1-State Error-Trellis Decoding of LDPC Convolutional Codes Based on Circulant Matrices Masato Tajima, Koji Okino, Takashi Miyagoshi (Univ. of Toyama)  IT2009-95 ISEC2009-103 WBS2009-74 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We consider the decoding of convolutional codes using an error trellis constructed based on a submatrix of a given check matrix. In the proposed method, the syndrome-subsequence computed using the remaining submatrix is utilized as auxiliary information for decoding. Then the ML error path is correctly decoded using the degenerate error trellis. We also show that the decoding complexity of the proposed method is basically identical with that of the conventional one based on the original error trellis. Next, we apply the method to check matrices with monomial entries proposed by Tanner et al. By choosing any row of the check matrix as the submatrix for error-trellis construction, a 1-state error trellis is obtained. Noting the fact that a likelihood-concentration on the all-zero state and the states with many 0's occurs in the error trellis, we present a simplified decoding method based on a 1-state error trellis, from which decoding-complexity reduction is realized. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | LDPC convolutional codes / submatrix of a check matrix / degenerate error trellis / 1-state error trellis / decoding complexity / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 444, IT2009-95, pp. 153-158, March 2010. | |
| Paper # | IT2009-95 | |
| Date of Issue | 2010-02-25 (IT, ISEC, WBS) | |
| 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 | IT2009-95 ISEC2009-103 WBS2009-74 |
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| Conference Information | |
| Committee | IT ISEC WBS |
| Conference Date | 2010-03-04 - 2010-03-05 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagano-Engineering Campus, Shinshu University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | IT |
| Conference Code | 2010-03-IT-ISEC-WBS |
| Language | English (Japanese title is available) |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | 1-State Error-Trellis Decoding of LDPC Convolutional Codes Based on Circulant Matrices |
| Sub Title (in English) | |
| Keyword(1) | LDPC convolutional codes |
| Keyword(2) | submatrix of a check matrix |
| Keyword(3) | degenerate error trellis |
| Keyword(4) | 1-state error trellis |
| Keyword(5) | decoding complexity |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Masato Tajima |
| 1st Author's Affiliation | University of Toyama (Univ. of Toyama) |
| 2nd Author's Name | Koji Okino |
| 2nd Author's Affiliation | University of Toyama (Univ. of Toyama) |
| 3rd Author's Name | Takashi Miyagoshi |
| 3rd Author's Affiliation | University of Toyama (Univ. of Toyama) |
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| Speaker | Author-1 |
| Date Time | 2010-03-04 11:40:00 |
| Presentation Time | 25 minutes |
| Registration for | IT |
| Paper # | IT2009-95, ISEC2009-103, WBS2009-74 |
| Volume (vol) | vol.109 |
| Number (no) | no.444(IT), no.445(ISEC), no.446(WBS) |
| Page | pp.153-158 |
| #Pages | 6 |
| Date of Issue | 2010-02-25 (IT, ISEC, WBS) |
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