多径信道下基于子空间跟踪的盲多用户检测

提出一种基于信号子空间估计，用于频率选择性衰落信道的盲多用户自适应接收机。此接收机不需要估计信道，直接估计等效扩频码，并将多用户检测与Rake接收联合考虑，稳态时性能优于D-rake接收机，是一种高性能，低复杂度的接收机，其计算复杂度与信道多径数无关，只与子空间跟踪的复杂度有关。

Blind multiuser detection over multipath channels based on subspace tracking

In this paper, a blind multiuser receiver for frequency-selective fading channel based on subspace tracking has been presented. This receiver combines the consideration of multiuser detection and Rake receiver. Its performance is better than the D-rake receiver. It has property of low complexity and high performance. Its computation complexity depends only on the chosen subspace tracking method.