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| Chaotic Synchronization Secure Communications Based on the Lorenz Systems Switch |
| Liu Yang-zheng ①②; Jiang Chang-sheng②; Lin Chang-sheng①; Xiong Xin①; Shi Lei① |
| ①Institute of Nonlinear Physics, Nanjing Institute of Technology, Nanjing 210013, China;②College of Automatic Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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Abstract A chaotic synchronization secure communication method based on several Lorenz systems switch is proposed. These Lorenz systems are built, which are relevant and can be switched each other via the choicer. Chaotic synchronization of these systems is realized using same nonlinear feedback control method. The transmitter can be switched discretionarily among several chaotic systems, bring on ceaseless changing of the chaotic carriers in transport channel. In the receiver, the chaotic carriers are retrieved from the received signals, then the information signals are recovered. The experiment result shows that this chaotic synchronization secure communications method based on several chaotic systems switch is better in security because of the transmitter can be switched and the chaotic carriers can be changed discretionarily.
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Received: 27 April 2006
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2007, Vol. 29 
