Anti-jamming secure communication system and method based on extended dimension coded modulation

Abstract

The invention relates to an anti-interference secret communication system and method based on dimension expansion coded modulation, and belongs to the field of anti-interference secret communication. The system comprises a dynamic dimension expansion transmitter arranged on a physical layer of a transmitting end, and a dynamic dimension expansion receiver arranged on a physical layer of a receiving end, wherein the transmitting end communicates with the receiving end through a main channel; and the receiving end feeds back through a public limited feedback channel. The method comprises the following steps that: at the transmitting end, the dynamic dimension expansion transmitter judges whether a previous information packet is transmitted successfully or not according to feedback of the receiving end, generates a transmission dimension expansion sequence based on a plaintext sequence which is transmitted successfully last time, and performs dimension expansion coded modulation by using the sequence; and at the receiving end, the dynamic dimension expansion receiver generates a dimension expansion sequence according to a plaintext sequence which is received successfully latest, performs dimension expansion demodulation and decoding by using the sequence to obtain a corresponding receiving plaintext, performs integrity verification, and feeds back a result to the transmitting end. Through adoption of the anti-interference secret communication system and method, anti-interference secret transmission of information can be realized.

Description

technical field [0001] The invention belongs to the field of anti-interference security communication, in particular to an anti-interference security communication system and method based on expansion code modulation. Background technique [0002] With the rapid development and wide application of wireless communication technology, wireless communication user terminals and communication traffic are increasing rapidly, spectrum resources are becoming more and more crowded, and channel interference is becoming more and more serious; at the same time, sensitive information related to business, personal privacy and national security It is also inevitable that it needs to be transmitted through an open wireless channel, which is very easy to be eavesdropped and intercepted by illegal users, and the problem of information security is prominent. How to carry out anti-interference and secure communication has become an urgent problem to be solved. [0003] In the traditional anti-j...

AI Technical Summary

Problems solved by technology

Therefore, the traditional anti-interference security communication system based on spread spectrum technology is facing serious challenges

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