非标准约束恒模盲多用户检测的改进算法研究

Research on improved algorithm of non-standard constrained constant modulus for blind multiuser detection

针对码分多址蜂窝移动通信中存在的多址干扰问题,以瑞利分布为变步长,构造了基于瑞利分布变步长的非标准约束恒模算法;与差分形式相结合,提出了基于瑞利分布变步长的非标准约束差分恒模算法(RDV-NSCDCMA);分析了此算法的性能并与非标准约束恒模算法(NSCCMA)进行了仿真比较。

In view of the problems about multiple access interference in CDMA （code division multiple access） cellular mobile communication, firstly we constructed a non-standard constrained constant modulus algorithm which is based on variable step of the Rayleigh distribution. Combined with the difference form, we put forward a non-standard constrained constant modulus algorithm of the difference form which is based on variable step of the Rayleigh distribution, called RDV-NSCDCMA. Compare with the simula- tions of the non-standard constrained constant modulus algorithm（NSCCMA） and RDV-NSCDCMA.