An Asynchronous Secure Communication System

Abstract

The invention relates to an asynchronous secure communication system, which comprises a sending end and a receiving end, the sending end and the receiving end are connected for communication, and in the sending end, a first electrical chaotic signal generating device and an encoder are connected in sequence; The device, the first delay device and the encoder are connected in sequence; the encoder is connected with the modulator, the original signal input terminal accepts the original signal, and is connected with the signal processor, the signal processor is connected with the modulator, and the modulator is connected with the transmitter; receiving The terminal is provided with a modulator, a second delayer, a comparator, and a demodulator. The receiver, the second delayer, the comparator, and the demodulator are connected in sequence, and the receiver is also directly connected with the comparator; The signal will be received by the receiver. The system of the invention realizes the chaotic secure communication without synchronization of the receiving end, and has the characteristics of low cost, stable performance, low error rate and strong confidentiality.

Description

technical field [0001] The invention belongs to the technical field of optical information, and in particular relates to an asynchronous secure communication system. Background technique [0002] In recent years, with the rapid progress of communication technology, our daily life has become inseparable from the world of information, so the high-speed and safe transmission of information has become extremely important. Because chaotic sequence has the advantages of noise-like, strong correlation, unpredictable long-term behavior, and initial value sensitivity, it is well used in the field of secure communication. The traditional chaotic communication system needs to be synchronized, which requires the sender and the receiver to use chaotic synchronization to generate exactly the same chaotic sequence, that is, both the transmitter and the receiver need to have devices that generate chaotic signals, which makes the overall communication system more bulky. ,higher cost. There...

AI Technical Summary

Problems solved by technology

The traditional chaotic communication system needs to be synchronized, which requires the sending end and the receiving end to use chaotic synchronization to generate exactly the same chaotic sequence, that is, both the sending end and the receiving end need to have devices that generate chaotic signals, which makes the overall communication system more cumbersome ,higher cost

Images