多用户混沌序列扩频通信系统设计与性能分析

该文介绍了多用户混沌扩频通信系统原理，分析了Chebyshev，Logistic，Tent 3种混沌扩频序列的平衡性、相关性，建立了多用户混沌扩频通信系统动态可视化仿真模型，利用模型研究了这3种不同混沌扩频序列扩频码的初始值、信噪比、用户数以及截取的序列长度对系统误码率的影响。仿真结果表明，Chebyshev映射的扩频性能最好，Logistic映射次之，Tent映射最差，且这3种混沌扩频码的扩频性能均优于传统的扩频码。

Design and Performance Analyses of Multi-user Chaotic Sequence Spread-Spectrum Communication System

The principle of multi-user chaotic sequence spread-spectrum communication system is introduced. Performances of balance and correlation properties of three different chaotic spread series (Chebyshev,Logistic and Tent) are analyzed.The dynamic visual simulation modeling of multi-user chaotic sequence spread-spectrum communication system is established.Based on this modeling,the error-bit rate performances of these systems with different initial values,signal to noise ratio,number of users and the length of sequence are investigated. Simulation results show that the spread-spectrum performance of Chebyshev is the best,then Logistic and Tent, and the spread-spectrum performances of the three chaotic spread series are better than that of the conventional spread sequence.