Secure communication based on chaotic synchronization via interval time-varying delay feedback control

O. M. Kwon, Ju H. Park, S. M. Lee

Research output: Contribution to journalArticlepeer-review

144 Scopus citations

Abstract

In this paper, a synchronization method of Lur'e systems for chaotic secure communication systems with interval time-varying delay feedback control is proposed. To increase communication security, the transmitted message is encrypted with the techniques of N-shift cipher and public key. Based on Lyapunov method and linear matrix inequality (LMI) formulation, new delay-dependent synchronization criteria are established to not only guarantee stable synchronization of both transmitter and receiver systems but also recover the transmitted original signal at the receiver. Throughout a numerical example, the validity and superiority of the proposed method are shown.

Original languageEnglish
Pages (from-to)239-252
Number of pages14
JournalNonlinear Dynamics
Volume63
Issue number1-2
DOIs
StatePublished - Jan 2011

Keywords

  • Chaotic system
  • Interval time-varying delays
  • LMI
  • Lyapunov method
  • Secure communication

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