MPSK信号的循环平稳特性分析  

Analysis of the Cyclic Stability Properties of MPSK Signals

作　　者：赵仕良[1] 

机构地区：[1]四川师范大学物理与电子工程学院,四川成都610066

出　　处：《四川师范大学学报（自然科学版）》2006年第1期78-81,共4页Journal of Sichuan Normal University（Natural Science）

摘　　要：介绍了循环平稳性的基本概念,分析了实信号与其复包络之间的循环谱的关系,从而得出MPSK信号的循环谱密度函数通式.还研究了MPSK信号的循环谱在传统傅立叶频率和循环频率截面的谱线特征,为在噪声中实现MPSK信号的检测及有关参数估计提供了理论基础,仿真结果证明了所得结论的正确性.The basic concept of cyclic stability signals is inroduced, the relationship of cyclic spectrum between the real signal and its complex envelope is analyzed. The general expression of the cyclic spectral density function of MPSK is obtained. The characteristics of the cyclic spectral lines of MPSK on Fourier frequency and the cyclic frequency cross section are also researched. It is shown that these characteristics are useful for detection and estimation in noisy environments, which is proved by the computer simulation.

关 键 词：循环平稳 循环谱 MPSK 

分 类 号：TN761.3[电子电信—电路与系统]