A Covert Communication Method Based on Scrambling Division Multiple Access

Abstract

The invention belongs to the technical field of digital information transmission, and discloses a covert communication method based on interference division multiple access. The covert communication method is characterized by detecting non-cooperative signals within a transmitted electromagnetism range, estimating the number of the non-cooperative signals when detecting the non-cooperative signals; performing interference temperature measurement on the non-cooperative signals, wherein the interference temperature measurement relates to estimation of parameters and identification of modulationmodes for the time-frequency united domain non-cooperative signals; achieving covert communication transmission of multiple signals through an interference division multiple access mode under the measured interference temperature threshold, and achieving separation of the multiple signals at a receiving end through a blind source separation technology. By proceeding from the angle of time-frequency united domain and artificial intelligence and utilizing the interference division multiple access technology, the covert communication method of the invention enables confidential information to behidden in a communication environment tactfully, and a third party can find the information difficultly, in this way, the information can be avoided from being interfered and attacked, thereby achieving covert communication.

Description

technical field [0001] The invention belongs to the technical field of digital information transmission, in particular to a covert communication method based on scrambling division multiple access. Background technique [0002] Today, with the rapid development of information technology, information security has become very important. It is an issue that any country, government, department, or industry must attach great importance to. It is a national security strategy that cannot be ignored. In military communication, it is only hoped that the recipient of the information can receive the content of the communication without being known by a third party, that is, to ensure that the communication message is transmitted secretly. At present, the existing technology commonly used in the industry is as follows: use encrypted communication, but the existence of the communication cannot be hidden, so that only the information can be located and intercepted, but the interceptor can...

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problem existing in the existing technology is: using encrypted communication, but the existence of the communication cannot be hidden, so that only the information is located and intercepted, but the interceptor cannot crack it, and it is easy to be found by the interceptor

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