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A self-interference communication method and system

A communication method, self-interference technology, applied in the field of communication

Inactive Publication Date: 2014-02-12
西南电子电信技术研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention uses mixed signals to

Method used

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  • A self-interference communication method and system
  • A self-interference communication method and system
  • A self-interference communication method and system

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Experimental program
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Embodiment Construction

[0025] Fig. 1 shows a schematic diagram of the communication spectrum of the self-interference communication method provided by the present invention. Useful signal S1 and self-drying

[0026] Fig. 2 shows a block diagram of the working principle of the secure communication method proposed by the present invention. The sender generates two messages

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Abstract

A self-interference communication method and system belong to the technical field of communication. The sender converts the useful sequence to be sent into a specific format and modulates it to generate a self-interference signal, linearly superimposes the useful signal and the self-interference signal into a mixed signal, and sends it on the same channel. According to the known self-interference signal generation format, the cooperative receiver estimates the channel parameters of the self-interference signal for the received mixed signal, reconstructs the self-interference signal, and then subtracts the reconstructed self-interference signal from the received mixed signal Demodulate to get the useful sequence. In the whole communication process from the transmitting party to the cooperating receiving party in the present invention, part of the transmission is a mixed signal, which has great anti-interception performance. Since the non-cooperating party does not know the format of the self-jamming signal and cannot reconstruct the self-jamming signal, there is no way to extract useful information from the mixed signal and ensure the information security of communication. Compared with the PCMA technology, the invention can enhance the security of the whole communication process and widen the application scope.

Description

A self-interference communication method and system Technical field The present invention belongs to technical field of communication, relate to a kind of communication method of carrying interference signal, be mainly used in keeping secret communication occasions. technical background The basic mode of communication is: sending equipment transmits in physical channel after the information to be transmitted is modulated, then The receiving device receives the signal from the corresponding channel and demodulates it to restore the original sending information. conventional means of communication, in the channel The signals being transmitted are essentially one-way signals. For spread / frequency hopping communication, the signal becomes regular after despreading and dehopping single-channel communication signal. For multiple access communication, the signal is also a single channel signal after removing the multiple access, such as the local code used in CDMA The de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00
Inventor 廖灿辉万坚朱中梁
Owner 西南电子电信技术研究所
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