跳码直扩系统的伪随机序列应用  

The Application of Pseudo Random Sequence in CH-DSSS System

作　　者：夏惊雷[1] 叶永涛[1] 贺荣[1] 

机构地区：[1]总参第63研究所,江苏南京210007

出　　处：《中国电子商情（通信市场）》2008年第2期65-69,共5页

摘　　要：跳码直扩及扩展的跳码／跳频通信系统中，扩频序列随时间跳变，系统抗干扰和反侦察性能有一定程度的增强。通过Berlekamp-Massey迭代算法对GOLD序列与DFS结构的混沌序列进行线性复杂度分析，结果表明低线性复杂度的码字反侦察性能差，进而将影响跳码直扩系统抗相关干扰的性能，而混沌序列在随机特性尤其是线性复杂度方面的性能良好，因而在跳码直扩系统中具有重要的应用价值。The performance of anti-jamming and counterreconnaissance is enhanced in CH-DSSS or CH-FH System, due to the variety of sequences. Berlekamp-Massey iterative algorithm is used to analyze the complexity of GOLD sequence and DFS chaos sequence. It shows that linear sequences have low complexity and the DFS chaos sequences, nonlinear sequences, have the finer linear complexity, so application of nonlinear sequences are preferable in CH-DSSS System.

关 键 词：跳码直扩 伪随机序列 混沌 线性复杂度 

分 类 号：TN914.4[电子电信—通信与信息系统] TN914.42[电子电信—信息与通信工程]