New Stopping Criteria for Iterative Decoding of LDPC Codes in H-ARQ Systems 


Vol. 33,  No. 9, pp. 683-690, Sep.  2008


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  Abstract

By using inherent stopping criteria of LDPC codes, the average number of iterations can be substantially reduced at high signal to noise ratio (SNR). However, we encounter a problem when hybrid automatic repeat request (H-ARQ) systems are applied. Frequent failures of decoding at low SNR region imply that the decoder reaches the maximum number of iterations frequently and thus the decoding complexity increases. In this paper, we propose a combination of stopping criteria using the syndrome weight of tentative codeword. By numerical analysis, it is shown that the decoding complexity of given H-ARQ system is reduced by 70-80% with the proposed algorithms.

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  Cite this article

[IEEE Style]

B. Shin, S. Kim, J. No, D. Shin, "New Stopping Criteria for Iterative Decoding of LDPC Codes in H-ARQ Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 9, pp. 683-690, 2008. DOI: .

[ACM Style]

Beomkyu Shin, Sang-Hyo Kim, Jong-Seon No, and Dong-Joon Shin. 2008. New Stopping Criteria for Iterative Decoding of LDPC Codes in H-ARQ Systems. The Journal of Korean Institute of Communications and Information Sciences, 33, 9, (2008), 683-690. DOI: .

[KICS Style]

Beomkyu Shin, Sang-Hyo Kim, Jong-Seon No, Dong-Joon Shin, "New Stopping Criteria for Iterative Decoding of LDPC Codes in H-ARQ Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 9, pp. 683-690, 9. 2008.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880