Interference management method and system for maximizing secure data transmission rate

Abstract

The invention discloses an interference management method and system for maximizing a secure data transmission rate. The scheme comprises the steps of sharing a channel state and data information among transmitters; respectively designing a pre-coding vector and a filtering vector for the target communication pair and the interference communication pair; a target communication transmitter introducing a power distribution factor alpha and a safety factor beta to construct a maxSRIM signal; then obtaining alpha and beta values which enable the safety rate of the system to be maximum through traversal, calculating a precoding vector of a maxSRIM signal according to the alpha and beta values, constructing the maxSRIM signal by a target communication transmitter, and sending the maxSRIM signal and an expected signal to a target communication receiver together; and finally, the target communication receiver recovering expected data of target communication from the received mixed signal. According to the method, the transmitting power of the target communication transmitter is reasonably distributed, so that the safety rate of the system can be maximized, and the method is used for data transmission under the conditions that the target communication receiver is interfered and is threatened by eavesdropping.

Description

technical field [0001] The invention belongs to the field of communication technology, and mainly designs an interference management method that maximizes the safe data transmission rate, specifically a method for realizing wireless security and eliminating the influence of interference on desired communication, which can be used in the case of known eavesdropper channel information It can be applied to a variety of wireless communication systems to maximize the security rate of the system. Background technique [0002] With the rapid development of information technology and the widespread use of mobile terminal equipment, wireless communication technology has been fully used in business, work, entertainment and other activities. Due to the broadcast nature of the wireless channel, the wireless air interface is open to all users, which makes the communication content vulnerable to eavesdropping by malicious users. Physical Layer Security (Physical Layer Security, PLS) was ...

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Problems solved by technology

[0006] To sum up, the wireless network is facing the threat of interference and eavesdropping at the same time, and the existing security management methods cannot guarantee the reliability of communication because the interference is not dealt with. Therefore, the design takes into account both communication reliability (anti-interference) and information confidentiality (anti-eavesdropping) transmission method is of great significance

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