Study of Simple LDPC Codes BP Algorithm
Xiaoqi Yin, Yin Kui-xi · Modern Electronics Technique · 2006
Low Density Parity Check Codes(LDPC) is a kind of linear group codes which can be near the Shannon limit,the complexity of decoding is low.The BP decoding algorithm has a good performance among the decoding algorithms,it can make certain that if the codes are decoded in the iterative decoding process,but it is complicated and needs large operations.In this paper,a better algorithm is proposed to reduce the amount of operations by curve fitting when updating the computation of check codes,it is useful for the realizing of hardware and can reduce decoding delay.The results of computer simulation have shown that the proposed algorithm has similar performance with the traditional BP algorithm,and it is less complicated.