A Perturbation Method for Decoding of LDPC Aided by CRC
Chunlei Lin, Dongliang Xiao, Hongbing Cheng, Meng Ma, Bingli Jiao · IEEE Vehicular Technology Conference · 2006
In this paper, we propose a new decoding method for LDPC aided by CRC and perturbation for improving FER performance. The CRC is used to check the decoding error of BP algorithm. Once an error is found, the perturbation method will be used to start re-decoding processing. Simulation results show that this method performs within about 1.2 dB of the sphere-packing bound for codeword length of several hundred bits.