Experimental study on particle filter based synchronization of chaotic Colpitts circuit with application to secure communications

Bi, Songjie; Shi, Zhiguo; Zhang, Hongtao; Shen, Xuemin

doi:10.1109/wcsp.2012.6542894

Cited by 1 publication

(2 citation statements)

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“…This work was supported in part by the National Science Foundation of China under grant 61171149, the Research Foundation of Chinese State Key Laboratory of Industrial Control Technology under grant ICT1119, the Fundamental Research Funds for the Chinese Central Universities under grant 2013xzzx008‐2, and the ORF‐RE, Ontario, Canada. Part of this paper was presented at the 2012 International Conference on Wireless Communications and Signal Processing .…”

Section: Acknowledgementsmentioning

confidence: 99%

“…In , we have proposed a PF‐based synchronization and communication scheme for the chaotic Colpitts circuit over the AWGN channel. In this paper, we extend the work in by fully studying the synchronization and communication over both the AWGN channel and the multipath fading channel, proposing an improved auxiliary particle filter (IAPF) algorithm considering the feature that the chaotic attractor is confined in a bounded state space and conducting a security analysis of the proposed communication system. The main contribution of this paper can be summarized as follows.…”

Section: Introductionmentioning

confidence: 99%

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Improved auxiliary particle filter‐based synchronization of chaotic Colpitts circuit and its application to secure communication

Shi

Zhang

et al. 2013

Wireless Communications

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In this paper, we propose a synchronization scheme based on an improved auxiliary particle filter (IAPF) for chaotic Colpitts circuit and conduct an experimental study on the synchronization performance with application to secure communications. Specifically, with the synchronization scheme, when the chaotic signals generated by an analog Colpitts circuit are transmitted through a nonideal channel, the distorted signals are processed digitally by the novelly designed IAPF at the receiver, in order to obtain the synchronized signals of the transmitter circuit. Experimental results indicate that synchronization can be achieved over both the additive white Gaussian noise channel and the multipath fading channel with low signal‐to‐noise ratio, even if there exist severe circuit parameter mismatches between the transmitter and the receiver. Furthermore, a chaos‐masking secure communication system is constructed and verified over both the additive white Gaussian noise channel and the multipath fading channel, and the bit error rate is evaluated versus different signal‐to‐noise ratios and symbol periods. It is shown that the achievable bit error rate can reach the order of magnitude of 10 − 4 without error correction coding techniques. In addition, security analysis demonstrates that the proposed chaotic secure communication system is resistant to the brute‐force attack. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Acknowledgementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%