Improved fountain code degree distribution algorithm

The invention provides an improved fountain code degree distribution algorithm, and belongs to the technical field of communication. According to the algorithm, an MBRSD degree distribution algorithm and an interpolation algorithm are combined organically, and a degree distribution function is further optimized by optimizing the size of a translatability set so as to obtain an IMBRSD degree distribution algorithm with better performance. The improved IMBRSD degree distribution algorithm reduces the number of encoding packs needed for successful decoding, reduces the error rate of the system and enables the fountain code to be better applied in each communication field. 本发明提出了种改进的喷泉码度分布算法，属于通信技术领域。该算法将MBRSD度分布算法与插值算法进行有机结合，通过优化可译集大小来进步优化度分布函数，得到种性能更优的IMBRSD度分布算法。改进的IMBRSD度分布算法减少了成功译码需要的编码包数，并且降低了系统的误码率，使喷泉码能够更好的应用在各个通信领域。