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| Improved Method for LDPC Decoding Algorithm Aided by Segmented Cyclic Redundancy Checks |
| Li Wei-hua; Jiao Bing-li |
| Department of Electronics, Peking University, Beijing 100871, China |
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Abstract A decoding method for LDPC codes concatenated by multiple Cyclic Redundancy Checks (CRCs) has improved the convergence of the decoding effectively. However, the error floor of the decoding appears due to the high overall Undetected Error Probability (UEP) of CRCs. Therefore, This work improves the Codeword Error Rate (CER) performance further based on the fact that the overall UEP of CRCs in decoding can be reduced when the application times of CRCs checking are decreased. The simulation results show the performance improvements in terms of CER, while decoding complexity is slightly increased.
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Received: 09 November 2006
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2008, Vol. 30 
