Performance comparison of two synchronization schemes for Colpitts circuits based chaotic communication system over noise channel

The synchronization performance of the Pecora-Carroll scheme and the error feedback scheme was investigated for two coupled chaotic Colpitts circuits. Both the mathematical derivation and numeric simulations indicate that the error feedback synchronization scheme outperforms the Pecora-Carroll synchronization scheme when the chaotic signal is transmitted over a noisy channel in which there exist an additive white Gaussian noise source and a channel filter. As a result, the information embedded in the chaotic signal, which passes a noisy channel from the transmitter to the receiver, can be recovered in a better way when the error feedback synchronization scheme is used.

[1]  Michael Peter Kennedy,et al.  The role of synchronization in digital communications using chaos. II. Chaotic modulation and chaotic synchronization , 1998 .

[2]  Radu Marculescu,et al.  Low-power realizations of secure chaotic communication schemes , 2000, IEEE APCCAS 2000. 2000 IEEE Asia-Pacific Conference on Circuits and Systems. Electronic Communication Systems. (Cat. No.00EX394).

[3]  Lixin Ran,et al.  Error feedback synchronization of chaotic Colpitts circuit , 2003, 2003 46th Midwest Symposium on Circuits and Systems.

[4]  R. Ostojic,et al.  Synchronization of chaotic Colpitts oscillators with applications to binary communications , 1999, ICECS'99. Proceedings of ICECS '99. 6th IEEE International Conference on Electronics, Circuits and Systems (Cat. No.99EX357).

[5]  Michael Peter Kennedy.  Chaos in the Colpitts oscillator , 1994 .

[6]  Carroll,et al.  Driving systems with chaotic signals. , 1991, Physical review. A, Atomic, molecular, and optical physics.