相关时变衰落信道中DSTM非相干接收机的结构与性能  

Structure and performance of noncoherent receivers for differential space-time modulation in correlated time-varying fading channels

作　　者：黄炳刚[1] 周志杰[2] 

机构地区：[1]西南电子电信技术研究所,四川成都610041 [2]解放军理工大学通信工程学院,江苏南京210007

出　　处：《通信学报》2009年第2期89-95,共7页Journal on Communications

摘　　要：针对空间相关时变衰落信道中的差分空时调制系统,推导得出了一种新的基于信道相关矩阵和时变衰落参数的最优非相干接收机结构,并针对几种特殊信道条件对该接收机进行了简化。实际应用该最优接收机时,基于判决反馈得到的数据,提出了一种次优的非相干接收机结构DF-NCR。理论分析和仿真结果表明,在相关时变衰落信道条件下,采用DF-NCR的差分空时调制系统的误码性能优于传统的差分传输模式。Utilizing channel correlation and time-varying fading parameter, a novel optimal noncoherent receiver for differential space-time modulation in correlated time-varying fading channels was derived. Under several special channels, the optimal receiver was simplified. Based on the decision feedback data, a suboptimal noncoherent receiver named DF-NCR was presented for the application of the optimal receiver. Analysis and simulation results show that the error performance of differential space-time modulation system with the proposed DF-NCR is better than conventional differential transmission method in correlated time-varying fading channels.

关 键 词：差分空时调制 空间相关 非相干接收机 判决反馈 

分 类 号：TN911.3[电子电信—通信与信息系统]