论文部分内容阅读
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.
The detection order of sphere decoder (SD) and its function in blind signal detection of OFDM system are discussed.A design criterion for deriving detection order P is proposed: to maximize the minimum element of each row in R In addition, a corresponding QR decomposition algorithm is also given.The simulation results show that MMRE can greatly reduce the complexity of SD search, and its performance is superior to the existing detection order.