本文描述了直接序列码分多址 (DS -CDMA)中的线性多用户检测算法 :匹配滤波器、解相关器、最小均方误差检测器。通过大量计算机仿真 ,比较了它们在误码率及远近效应等方面的性能表现。说明最小均方误差检测器误码率性能优于解相关检测器、解相关检测器优于匹配滤波器 ,而解相关检测器抗远近效应能力优于最小均方误差检测器 This paper describes the linear multi-user detection algorithm in direct sequence code division multiple access (DS-CDMA): matched filter, decorrelator, minimum mean square error detector. Through a large number of computer simulation, compared their performance in the bit error rate and near-far effects and other performance. It shows that the BER performance is better than the decorrelation detector and the decorrelation detector is better than the matched filter. The anti-correlation effect of the decorrelation detector is better than the minimum mean square error detector