多径CDMA系统基于新的信号波形估计的盲多用户检测

Blind Multiuser Detection Based on a New Signature Waveform Estimation Method in Multipath CDMA Systems

针对天线阵 CDMA系统 ,提出了一种基于新的待检用户信号波形估计的盲多用户检测方法 .该方法利用接收信号的循环平稳特性求得所有用户总的信道卷积矩阵 ,然后根据估计出的信道卷积矩阵求解待检用户的信号波形 .其解在信噪比略高时更为精确 .仿真结果表明 。

A blind multiuser detection (MUD) method based on a new desired user' signature waveform estimation method in antenna array CDMA systems is proposed. The proposed method will directly obtain the total channel convolution matrix of all users by exploiting the cyclostationarity of received signals. Then find out the solution to the desired user' signature waveform necessary to MUD given the estimated channel convolution matrix in this paper. It is more accurate at a little higher signal to noise ratio (SNR). The simulation results show that the proposed method has superior performance over some existing methods at a little higher SNR.