Design and implementation of the Sprott chaotic secure digital communication systems

Yi You Hou, Hsin Chieh Chen, Jen Fuh Chang, Jun Juh Yan, Teh Lu Liao

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


In this paper, synchronization of Sprott chaotic systems and its application in secure communication are presented. We first utilize a proportional-integral-derivative (PID) control scheme to solve the synchronization problem of chaotic systems. Then for the purpose of application to secure communication, a state signal of the analog chaotic system is converted to a digital train with variable pulse width (square wave with random frequency) by voltage controlled oscillator (VCO). The original digital message is masked by the digital train generated from VCO in the chaotic transmitter via a logical exclusive-OR (XOR) operation and it can be successfully recovered by another VCO and XOR operation at the chaotic receiver due to the synchronization. To verify the system performance, basic electronic components containing operational amplifiers (OPAs), resistors and capacitors are used to implement the proposed PID-based chaotic secure communication system. Finally, the experimental results validate the proposed chaotic communication approach.

Original languageEnglish
Pages (from-to)11799-11805
Number of pages7
JournalApplied Mathematics and Computation
Issue number24
Publication statusPublished - 2012 Aug 15

All Science Journal Classification (ASJC) codes

  • Computational Mathematics
  • Applied Mathematics

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