基于Matlab仿真的幅值同步混沌通信性能比较  

Comparison of the Characteristics of Chaotic Communication with Amplitude Synchronization Based on Matlab Simulation

作　　者：孔德彭[1] 舒露丝[1] 闫艳敏[2] 

机构地区：[1]浙江工业大学技术与教育发展研究中心,浙江杭州310014 [2]商丘职业技术学院,河南商丘476000

出　　处：《实验室研究与探索》2013年第10期59-64,83,共7页Research and Exploration In Laboratory

基　　金：浙江省社科联资助项目(201113054);浙江教育厅资助项目(GD11011080100);浙江工业大学教改资助项目(ZY1109);浙江工业大学预研基金(1103108010708)

摘　　要：混沌技术在通信领域中具有重要的应用价值,在混沌通信系统中,由于通信类型不同得出的性能指标也不同。文中以寻找合适的混沌模型使通信系统的性能指标达到最佳为出发点,利用Matlab技术构造一种新三维混沌系统,基于幅值同步技术快速实现混沌遮掩通信,给出对比效果图;同时与其他混沌系统对比,得出新系统相比其他系统更适合四进制多因子参数扩频技术混沌通信。文中首先通过Matlab分析系统的平衡点、分岔图、相关性、混沌吸引子等特性,再通过幅值实现同步,并与非线性同步性能作比较,得出幅值同步简单、响应快、误差小等优点,同时进行了掩膜通信验证;最后将本系统与其他混沌系统分别基于变参数扩频技术进行仿真对比,得出二四进制误码率的结果。Chaos theory plays an important role in digital communication. This paper constructs a new chaotic three- dimensional model. This article first analyses the equilibrium points of the system, chaotic attractor, bifurcation diagram, relativity and other characteristics. The system can achieve synchronization based on amplitude and then is compared with nonlinear synchronization. The system is simple, fast response and small error. The security of the communication using chaos synchronization is guaranteed. Encryption and decryption become more convenient. The system can be applied in spread spectrum whose parameter is variable. According to two four hex bit error rates, we can make some comparison. The system is suitable for multi-factor digital spread spectrum communication. This paper also gives a comparison result by using simulation technology.

关 键 词：MATLAB仿真 混沌通信 性能比较 

分 类 号：TN391.9[电子电信—物理电子学]