Abstract

A secure digital communication system based on chaotic theory is proposed to fence off the intrusion of eavesdroppers during the transmission of signal and data. With the master-slave M-synchronization technique, the transmitter and the receiver are designed using the chaotic phase shift keying. A new discrete-time modified Chua's circuit using the xlxl nonlinearity is adopted. This methodology for the design of secure communication systems can be applied to most real time communication applications, such as Internet telephone, ecommerce transactions, and digital data transfer.

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