喷泉码的编译码算法研究

ountain codes deserve a lot of attention because of its characteristics of rateless and low complexity encoding and decoding algorithm. This paper introduces the encoding and decoding algorithm of LT codes and Raptor codes, and analyses the decoding algorithm in 3GPP MBMS. Then we propose a simplified decoding algorithm according to the analysis. Simulation results show that average decoding time of the proposed decoding algorithm is much less than the decoding algorithm in 3GPP MBMS.