Improved Method of LT Codes Encoding and Decoding
Shi Chun-ling · Jisuanji gongcheng · 2010
LT codes can effectively transfer information over erasure channel with unknown erasure rates due to their rateless properties. The cost of LT codes decoding is increasing with the probability of R-set with empty. This paper introduces an improved method of LT codes encoding and decoding which changes the degrees of input symbols,while the degrees of input symbols are according to uniform distribution and 4-cycle is eliminated. The algorithm can decrease the probability of R-set with empty. Simulation results show that the method can reduce the cost of LT codes decoding.