一类直接混沌序列扩频通信置换编码方案

摘要

直接序列扩频通信需要大线性复杂度的序列用作扩频调制码，混沌序列可以胜任。为实现一类扩频通信编码方案，提出基于“天书”模型的混沌序列发生器，对其进行了置换编码，随后分析了置换编码的保密强度，最后给出了该编码的应用途径和理由。%Chaotic sequence could be competent for the need of very large linear complexity sequence ,which modulated for spread spectrum for Direct Sequence Spread Spectrum (DSSS) .Firstly a skytale‐based chaotic sequence generator was proposed ,and spread spectrum communication was encoded with permutation ,then the security level of permutation coding was analyzed .At last ,the application and account was provided for the new chaotic coding design .