一种消除CDMA系统多址干扰和码片间干扰的空时处理技术

A space time process technology for MAI and ICI suppression in CDMA systems

为了消除CDMA移动通信系统中的多址干扰和多径传播引起的码片间干扰 ,利用CDMA信号的恒模特性以及用户已知的扩频码提出一种空时处理方法 .同其他方法相比 ,它避免了对每个阵元延时抽头输出进行码滤波 ,且运算量降低 ,能有效地消除CDMA系统中的多址干扰和码片间干扰 .

This paper presents a blind ST DRCMA algorithm which combats both MAI and ICI for DS/CDMA systems. The algorithm proposed utilizes the constant modulus properties of CDMA signals and spread signature known. Also, no despreading is used on the output of delay taps, and computation complexity is low. Computer simulation illustates the performance of the ST DRCMA receiver.