直序扩频信号码元的同步方法研究  

Research of direct sequence spread spectrum signal code element synchronization

作　　者：邱冬冬[1] 鲁新龙[1] 杜建尧[1] 金华松[1] 

机构地区：[1]中国卫星海上测控部,江阴214431

出　　处：《国外电子测量技术》2012年第9期23-26,共4页Foreign Electronic Measurement Technology

摘　　要：扩频通信技术是指用来传输信息的射频带宽远大于信息本身带宽的一种信息传输方式,介绍了直接序列扩频系统码元同步的两种捕获方法:全并行捕获方法和串行捕获方法。详细讲述了串行捕获方法的分类和原理,并对它们作了比较,最后,就码元同步中的码元跟踪进行了介绍,给出了码跟踪环—延迟锁定环(DLL)的一般工作模型,并使用System View对其进行了仿真。The spread spectrum technology is a form of information transmitting in which the RF bandwidth is much larger than the bandwidth of the information itself,two kinds of capture methods of direct sequence spread spectrum system code element synchronization were introduced in this paper;they were the full parallel capture method and the serial capture method.Then,classification and principles of the serial capture method were introduced in detail,and they were compared.Finally,code element tracking in code element synchronization was introduced,a general working model of code element tracking loop-delay locked loop was put forward,and it was simulated by System View.

关 键 词：直接序列扩频 同步 捕获 跟踪 

分 类 号：TN911.3[电子电信—通信与信息系统]