Abstract: This paper analyzes and simulates the performance of low density parity check codes (LDPC) on Rician fading channels, and modifies BP decoding algorithm, provesthe symmetry and shows the stability conditions of the channels calculates theShannon limit of Rician channels. Using Visual C⁺⁺ programming to simulate the performance, the result indicates that when code length N=3 072, coderate R=1/3, the distance with Shannon limit is about 2 dB. The performance of LDPC is also very effective on all kind of channels, including Rician channels.

Key words: LDPC, fading channel, RICIAN channels