基于多值量化的混沌扩频序列及其性能分析  

Performance analysis of chaotic spread spectrum based on multilevel quantification

作　　者：于一丁[1] 王永川[1] 王长龙[1] 

机构地区：[1]军械工程学院无人机工程系,河北石家庄050003

出　　处：《微型机与应用》2017年第6期58-61,共4页Microcomputer & Its Applications

基　　金：装备预研基金项目(9140A25031314JB34004)

摘　　要：为了分析基于多值量化的混沌扩频序列的性能,以Chebyshev混沌映射为例,结合其概率密度分布函数的特点给出对其进行多值量化的方法。仿真分析多值量化混沌序列的平衡性和相关性,在高斯白噪声信道中对传统二值量化混沌序列和多值量化混沌序列扩频通信系统进行误码率仿真,并从低检测概率和低利用概率两个角度对多值量化混沌序列的抗截获性能进行分析。仿真结果表明多值量化混沌序列的误码率性能更好,其抗截获性能也有所提高。In order to analyse the performance of chaotic spread spectrum sequence based on multilevel quantification,taking the Chebyshev map chaotic sequence for example,a method of multilevel quantification is proposed based on the characteristics of the probability density distribution function of chaotic map. The balance and correlation performance of multilevel quantification spread spectrum sequence is analyzed,the BER of traditional binary sequence and multilevel quantification sequence are simulated in the presence of AWGN channel,and then the anti-interception capability of multilevel quantification sequence is analyzed from two aspects of LPD and LPE. The results show that the multilevel quantification spread spectrum sequence has better BER performance,and the capability of anti-interception is also improved.

关 键 词：混沌序列 多值量化 抗截获 

分 类 号：TN914[电子电信—通信与信息系统]