The multi-user detection algorithm based on the EM method is used to look for the maximum-likelihood estimation of users' data iteratively in a DS-CDMA system.
基于EM方法的多用户检测算法采用EM迭代方法来求解DS-CDMA系统中各用户发送数据的最大似然估计解。
It realizes same radio spectrum using by multi-users. So spectrum detection is the key technique for realization of cognitive radio.
检测主用户信号是否存在的频谱检测技术就成为认知无线电系统的关键技术。
应用推荐