J4 ›› 2009, Vol. 26 ›› Issue (4): 456-464.

• 量子光学 • 上一篇    下一篇

一种超混沌保密通信方案与数字信号处理器实现

张朝霞 禹思敏   

  1. 广东工业大学自动化学院, 广东 广州 510006
  • 收稿日期:2008-08-18 修回日期:2008-11-18 出版日期:2009-07-28 发布日期:2009-06-29
  • 通讯作者: 禹思敏(1957-),男,博士,教授,博士生导师,主要从事非线性电路与系统理论、混沌理论与保密通信、复杂混沌系统建模、分析与应用等方面的研究。 E-mail:siminyu@163.com
  • 作者简介:张朝霞(1976-),女,博士研究生,主要从事混沌理论与保密通信方面的研究。
  • 基金资助:

    国家自然科学基金(批准号: 60572073, 60871025)和广东省自然科学基金(批准号: 8151009001000060, 5001818, 8351009001000002)

A scheme for hyperchaotic secure communication and its implementation via digital signal processor

ZHANG Zhao-Xia, Yu-Si-Min   

  1. College of Automation, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2008-08-18 Revised:2008-11-18 Published:2009-07-28 Online:2009-06-29

摘要:

提出了一种基于振荡器耦合实现超混沌保密通信的新方案。在两个RC振荡器耦合产生超混沌信号基础上,构建一个包括信息在内的非线性耦合环路,实现对信息的加密与解密。对其混沌动力学行为进行了分析,包括分岔和最大Lyapunov指数。利用数字化处理技术,对连续时间系统作离散化处理和变量比例扩张变换,最后给出了用数字信号处理器来实现该方案的设计原理与硬件实现结果。

关键词: 混沌, 保密通信, 数字信号处理器实现, RC振荡器, 非线性环形耦合

Abstract:

A novel scheme for hyperchaotic secure communication based on ring coupled RC oscillators is proposed. The presented scheme uses RC oscillator-based hyperchaotic signal generators and nonlinear ring couplers, from which information encryption and decryption can be realized. Basic dynamics behaviors are then investigated, including bifurcation diagram and maximum Lyapunov exponents. Furthermore, by appropriate discrete processing and variable proportion transformation of continuous time systems, this approach is designed and implemented by digital signal processor (DSP) and its hardware experimental results are also given.

Key words: chaos, secure communications, digital signal processor-based realization, RC oscillators, nonlinear ring coupler

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