基于多码元参考相位估值的DPSK解调算法  

A Much Simplified DPSK Multiple-Symbol Detection Algorithm

作　　者：叶威[1] 王永生[1] 

机构地区：[1]西北工业大学电子工程系,陕西西安710072

出　　处：《西北工业大学学报》2002年第2期333-336,共4页Journal of Northwestern Polytechnical University

基　　金：航空科学基金(98E53047)

摘　　要：分析以往提出的一些对差分相关解调方式的改进算法,从另外一个角度论证其性能,证明这些方法在本质上都是等价的;在此基础上提出一种对加性高斯噪声信道随机相位估计的新算法,并得出一种新的DPSK或PSK的解调方法。这种方法模糊了相关解调和非相关解调的界线,实现简单,当阶数足够高的时候,其性能接近相关解调。To our hest knowledge, existing multiple-symbol DPSK (differential phase shift keying) detection algorithms are more complicated than we deem to be necessary. Fig. 1 is the schematical diagram of the new much simplified algorithm proposed by us. Fig. 1 corresponds to eq. (15) that we derived. In the discussion of Fig. 1, we explain in detail the reason why our new algorithm is much simplified. Figs. 2 and 3 give simulation results, which show that the detection performance of our new algorithm is about the same as that of the much more complicated method proposed by Divsalar and Simon in Ref [1].

关 键 词：多码元参考相位估值 DPSK 解调算法 差分相干解调 多码元差分检测 调制理论 数据反馈判决 

分 类 号：TN911.3[电子电信—通信与信息系统]