Communication system based on superlattice chaotic synchronization

Abstract

The invention relates to a communication system based on superlattice chaotic synchronization. The communication system based on superlattice chaotic synchronization includes a raw information generating device, a first chaotic signal generating device, a modulating device, a demodulating device, a second chaotic signal generating device and a raw information receiving device. The first chaotic signal generating device and the second chaotic signal generating device are both chaotic signal generating circuits based on superlattice devices and circuit parameters are coupled with each other. The first chaotic signal generating device generates a first chaotic signal. The modulating device modulates raw information according to the first chaotic signal. The second chaotic signal generating device generates a second chaotic signal that is synchronous with the first chaotic signal. The demodulating device demodulates the modulated information and a demodulated signal is obtained. According to the invention, circuit parameters of the chaotic signal generating devices at a transmitting end and a receiving end are coupled with each other, so that synchronous random numerical code streams can be produced and automatic synchronization of the transmitting end and the receiving end can be realized. The raw information cannot be decoded even when a third part knows the parameters of the transmitting end and the receiving end.

Description

【Technical field】 [0001] The invention relates to the field of synchronous and secure communication, in particular to a communication system based on superlattice chaos synchronization. 【Background technique】 [0002] The traditional secure communication method is that the two communicating parties encrypt the original information with a string of data held only by themselves, and the receiver decrypts the original information through the string of data. In the above process, as long as a third party intercepts the sent information and also holds this string of encrypted codes, the original information sent can be easily eavesdropped. This is obviously very insecure and it is impossible to realize public confidential communication. [0003] In 1976, Diffie and Hellman proposed a secure key exchange protocol based on number theory, which enables the confidential communication of information in public channels. This discovery laid the foundation for modern cryptography. In r...

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Problems solved by technology

However, the circuit uses thermal noise as a chaotic signal source, and the rate is very low; using a chaotic laser requires a large area and is not easy to implement

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