此文件为ＭＰＡ消息传递算法的ｍａｔｌａｂ源文件，在ＳＣＭＡ非正交多址的情况下，具有良好的多用户检测的性能。(This file is the matlab source of the MPA messaging algorithm, and has good multiuser detection performance in the case of SCMA non orthogonal multiple access.)

SCMA稀疏码分多址接入技术，包括编解码部分(Sparse code division multiple access technology)