【摘要】 探讨了球解码算法(sphere decoder,SD)的检测次序及其在OFDM系统盲信号检测中的作用.提出了一种用于导出检测次序P的设计准则:最大化R中每一行的最小元素(maximizing the minimal row entry,MMRE).另外,还给出了相应的QR分解算法.仿真结果表明,MMRE可以大幅降低SD搜索的复杂度,性能优于已有的检测次序.更多还原

【Abstract】 The detection orderingfor the sphere decoder (SD) andits applicationinthe blind signal detection of the Orthogonal Frequency Division Multiplexing (OFDM) system were considered.To derive the detection ordering mechanism P,a novel principle was proposed,which maxi mizes the mini mal row entry (MMRE) of R.At the same ti me,its corresponding QR factorization method was also presented.The MMRE mechanism can reduce the complexity greatly.The si mulations prove the effectiveness of the MMRE.更多还原