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Synchronization of the chaotic secure communication system with output state delay

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  • Changchien, Shih-Kuen
  • Huang, Chuan-Kuei
  • Nien, Hsiau-Hsian
  • Shieh, Hong-Wei

Abstract

In this paper, we utilize a proper Lyapunov function and Lyapunov theorem, combined with LMIs method, in order to design a controller L, which ensures the synchronization between the transmission and the reception ends of the chaotic secure communication system with time-delay of output state. Meanwhile, for the purpose of increasing communication security, we encrypt and decrypt the original to-be-transmitted message with the techniques of n-shift cipher and public key. The result of simulation shows that the proposed method is able to synchronize the transmission and the reception ends of the system, and moreover, to recover the original message at the reception end. Therefore, the method proposed in this paper is effective and feasible to apply in the chaotic secure communication system.

Suggested Citation

  • Changchien, Shih-Kuen & Huang, Chuan-Kuei & Nien, Hsiau-Hsian & Shieh, Hong-Wei, 2009. "Synchronization of the chaotic secure communication system with output state delay," Chaos, Solitons & Fractals, Elsevier, vol. 39(4), pages 1578-1587.
    • Handle: RePEc:eee:chsofr:v:39:y:2009:i:4:p:1578-1587
    DOI: 10.1016/j.chaos.2007.06.046
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