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多用户检测技术是DS CDMA中的一项关键技术 ,而天线阵也是一种减轻多用户干扰的方法 .本文将两种技术结合在一起 ,提出了将子空间方法应用于天线阵多用户检测技术 .这种技术可适用于低速移动台在慢衰落信道下的盲检测 .仿真结果表明这种算法比单纯作最佳二维Rake接收要好 ,和有训练序列的先做CMOE再做最佳合并的性能差不多 .
Multi-user detection technology is a key technology in DS CDMA, and antenna array is also a way to reduce multi-user interference.This paper combines the two technologies, and proposes the application of subspace method to multi-user antenna array detection technology This technique can be applied to blind detection of low speed mobile stations in slow fading channels.The simulation results show that this algorithm is better than the best two-dimensional Rake receiver and the best combination of CMOE with training sequence Performance is similar.