High safety communication technology based on two-way time domain waveform aliasing

Abstract

The invention discloses a high safety communication technology based on two-way time domain waveform aliasing and belongs to the technical field of communication. The existing local signals of two communication parties are fully utilized to perform aliasing and covering on each other's signals. The two communication parties transmit and receive mixed signals. Each communication party receives and separates the signals of the other party and allows the same to be mixed with local signals for transmission. The cooperating parties can separate the signals by using local signals and waveform reconstruction offset to complete normal communication. Non-cooperating parties do not know signal samples of the cooperating parties, the mixed signals cannot be separated, and information transmission safety is guaranteed. The method aiming at the situation that communication information safety faces increasingly large threats has the advantages that the signals transmitted in channels are mixed by two signals, safety communication of the whole communication process can be achieved, and no extra communication bandwidth is needed.

Description

technical field [0001] The invention belongs to the direction of safe communication in the technical field of communication, relates to mixed signal transmission and waveform reconstruction offset technology, and can be applied to various communication occasions emphasizing the safety of information transmission. Background technique [0002] The basic way of communication is: the sending device modulates the information to be transmitted and sends it in the physical channel, and the receiving device receives the signal from the corresponding channel and demodulates it to restore the original sending information. In important occasions involving the country's military, politics, economy, etc., confidential communication is very important. In the current communication field, the main means to enhance communication security are source encryption and channel anti-interception technology. Source encryption is to use encryption algorithm to encrypt the transmitted signal before ...

AI Technical Summary

Problems solved by technology

However, for PCMA technology, its uplink signal is a single-channel signal, which does not have anti-intercept performance; the two signals that make up the downlink mixed signal are sent by different terminals, and a transparent transponder is needed for signal aliasing, making The application of the entire technical solution is limited, and the implementation process is complicated and the equipment is expensive

[0005] In order to further enhance the security of communication, the present invention provides a high-security communication technology based on two-way time-domain waveform aliasing. This technology uses the existing local signals of both communication parties to alias and cover up the other party's signal, so as to realize the whole process of communication. Confidential treatment, there is no patent declaration related to this technology

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