多径条件下BPSK信号的循环平稳特性  

Parameter Estimation of Multipath BPSK Signal

作　　者：史建锋[1] 王可人[2] 

机构地区：[1]北京军代局,北京100042 [2]电子工程学院,安徽合肥230037

出　　处：《雷达科学与技术》2007年第4期296-299,共4页Radar Science and Technology

摘　　要：二相编码(BPSK)信号为常用的一种编码信号,单径情况下具有循环平稳特性。首先介绍了循环平稳信号的基本概念,然后推导了多径条件下多径BPSK信号的循环相关函数和谱相关函数,并通过表达式分析了其特性,分析表明多径条件下BPSK信号具有循环平稳特性。最后进行了计算机仿真实验,仿真结果表明多径BPSK信号具有循环平稳特性,并且可利用信号的循环平稳特性进行信号识别等。BPSK signal is one of coded signals, which has cyclostationary property. In this paper, the concept of cyclostationary signal is introduced, and then the cyclic correlation function and spectral correlation function of multipath BPSK signal are deduced and their properties are analyzed. The analysis results show that the multipath BPSK signal has cyclostationary property. Finally, computer simulation is given, and it can be seen from the results that the theory analysis are correct and signal recognition can be achieved by the cyclostationary property.

关 键 词：多径 二相编码信号 循环平稳 

分 类 号：TN911[电子电信—通信与信息系统] TN957[电子电信—信息与通信工程]