Wireless single-input single-output vector synthesis secure transmission method based on RIS

Abstract

The invention discloses a wireless single-input single-output vector synthesis secure transmission method based on an RIS (Radio Information System), which mainly solves the problem of ensuring the information security of a physical layer of a single-input single-output system in the existing RIS-assisted wireless transmission technology. Comprising the steps that a single-antenna transmitting end transmits a signal to be synthesized, and the signal is designed according to known channel state information; then, for randomly selecting RIS array element reflection coefficients, respectively designing two RIS reflected signal vector synthesis signal transmission schemes with different implementation complexity so as to realize vector synthesis of received signals by a legal receiving end and obtain regular receiving constellation symbols, but the received signals at an eavesdropping end keep random disturbance, and ideal synthesis processing cannot be realized; and finally, the legal receiving end and the eavesdropping end respectively detect and decode the received signals obtained by the legal receiving end and the eavesdropping end. According to the invention, the security of information transmission can be guaranteed, the reliability of information transmission is effectively improved, and the hardware implementation cost of the RIS control end is low.

Description

technical field [0001] The invention belongs to the field of communication technology, and further relates to physical layer information security technology in wireless communication, specifically a wireless single-input single-output vector synthesis security transmission method based on a reconfigurable intelligent surface RIS (Reconfigurable Intelligent Surface), which can be used to improve The RIS enables transmission security for a single-input single-output wireless communication system. Background technique [0002] In recent years, the development of 5G mobile communication has made people's daily production and life more convenient and efficient, but its difficult layout, high energy consumption, and the openness of the communication environment have also brought many difficulties to the upgrading of mobile communication. The proposal of reconfigurable intelligent surface RIS and its application in communication technology have opened up new ideas for the developme...

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Problems solved by technology

[0006] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, and propose a RIS-based wireless single-input single-output vector synthesis security transmission method, which is used to solve the problem of existing RIS-assisted wireless transmission technology in the single-input single-output system physical layer information security. Weaknesses in safeguarding issues

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