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中文摘要：
提出了一种有效并且数值稳定的、基于QR分解的垂直分层空时码（vertical layered space-time code,V-BLAST）检测算法。在信道矩阵QR分解得到的上三角矩阵中,先检测的信号具有更高的分集度,然而传统的基于QR分解的算法由于没有利用这种潜在的分集,通常性能要低于其他连续干扰消除（successive interference cancellation,SIC）算法。新算法在每一干扰消除阶段引入并行干扰消除（parallel interference cancellation,PIC）,对已估计的各个分量进行更新,有效减少现有连续干扰消除类算法存在的误差传递问题。仿真表明新算法性能明显优于传统基于最小均方误差（minimum mean square error,MMSE）的连续干扰消除算法性能,且算法复杂度依检测顺序的确定方法不同而略高于或低于MMSE算法。
英文摘要：
An efficient and numerical stable vertical layered space-time code detecting algorithm based on QR decomposition is proposed.In the upper-triangular matrix obtained from the QR decomposition（QRD） of the channel matrix,the earlier detected signals have higher diversity,but the traditional QRD based detection does not exploit such potential diversity,so its performance is lower than other successive interference cancellation（SIC） algorithms.The new method introduces the parallel multistage detection into each interference cancellation stage of QRD method and refines all the detected signals before they are cancelled in the next detection.Simulation shows that the proposed method has a better performance than the traditional zero-forcing based method and approaches the MMSE based method but with lower complexity.
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