A Novel Decoding Algorithm of LDPC Code for Deep Space Communication
Gengxin Zhang · Journal of Astronautics · 2010
A LDPC code is very promising in deep space communication due to its near Shannon limit performance and practicable complexity.The LDPC specification of CCSDS(Consultative Committee for Space Data System) is presented briefly at first,and the code performance is analyzed by using multi-dimension EXIT curvy.Then,the decoding algorithms are investigated in depth,and a novel decoding algorithm is proposed based on auto-adaptively adjusting normal factor in normalized MinSum algorithm.The novel algorithm outperforms the latter at different signal noise ratio and is fit for deep space communication due to its better performance and low complexity.