Hybrid decoding scheme based on WED and BF algorithms
Zijian Dong, Hongyan Xu · Procedia Engineering · 2011
This contribution studies the application of Weighting Erased Decoding (WED) algorithm in the decoding of LDPC codes. WED is a kind of maximum likelihood algorithm used in the decoding of linear block codes with quantized channel outputs. Based on WED algorithm and Bit Flipping (BF) algorithm, a hybrid decoding scheme is proposed, which takes advantage of the simplicity of BF and the utilizing of reliability of received symbols. Simulation results show that the proposed scheme is feasible and effective, but the performance improvement is limited and depends on a parameter similar to the minimum Hamming distance in block codes.Click