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An efficient BF LDPC decoding algorithm based on a syndrome vote scheme

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2 Author(s)
Jui-Hui Hung ; Institute of Electronics & Department of Electronics Engineering, National Chiao Tung University, Hsinchu, Taiwan ; Sau-Gee Chen

This work presents a high-performance bit-flipping (BF) algorithm utilizing a proposed syndrome vote technique of a defined culprit bit set, named CVBF algorithm for LDPC decoding. It can achieve significant decoding performance improvements by about 0.9 dB over the most efficient BF algorithm, owing to the introduced an additional syndrome vote procedure after updating the flipping reliabilities of all the received bits in each iteration. Moreover, its performance is comparable to the min-sum algorithm (MSA) under the condition of same iteration number, but with much lower complexity per iteration. The proposed syndrome vote scheme only costs little overhead in hardware realization. Besides, an early termination strategy suited for the proposed algorithm is also devised to further reduce the iteration number.

Published in:

2008 14th Asia-Pacific Conference on Communications

Date of Conference:

14-16 Oct. 2008