提出了一种基于信道盲估计的多用户检测方法 .该方法首先估计出码分多址 (CDMA)系统中各用户信道的等效FIR滤波器参数 ,在此基础上求解各用户的信号 .在信道盲估计时 ,仅利用了采样信号的二阶统计量 .计算机仿真实验表明 ,该方法是一种具有抗远近效应及多址干扰、适用于频率选择性衰落信道的CDMA多用户检测方法 This paper proposes a multi-user detection method based on blind channel estimation, which first estimates the equivalent FIR filter parameters of each user channel in CDMA systems and then solves the signals of all the users. The channel blind estimation uses only the second-order statistics of the sampled signal.Computer simulation shows that this method is a CDMA multi-user detection method with anti-near-far effect and multiple access interference for frequency selective fading channels