An improved BP-based concatenation algorithm of short LDPC codes
Feng Guang-zeng · Journal of Chongqing University of Posts and Telecommunications · 2010
This paper analyses the ordered statistic decoding(OSD) algorithm of short LDPC codes and investigates BP-OSD concatenation algorithm and LLR accumulation algorithm.Considering the tradeoff between the complexity and performance of decoding,the min-sum algorithm was used instead of the BP algorithm,and it was concatenated with LLR accumulation algorithm.Simulation results show that compared with the original BP algorithm,the performance of the improved concatenation algorithm has been greatly raised,and compared with the BP-OSD concatenation algorithm,its decoding complexity has been reduced and the performance is nearly the same.