Cooperative physical layer security implementation method based on interference node optimization layout

Abstract

The invention provides a cooperative physical layer security implementation method based on interference node optimization layout, which is used for solving the technical problem of small confidentialcapacity acquired by transceiving node pairs in the prior art, and comprises the following implementation steps of: constructing a cooperative physical layer security system; measuring the channel gain between different nodes; calculating the channel capacity between the nodes; calculating the sum of confidential capacities provided by the cooperative interference nodes; establishing a cooperative interference node layout optimization model based on the sum of confidential capacities, and solving the cooperative interference node layout optimization model; and arranging the cooperative interference nodes and providing cooperative interference service according to a solving result, so as to achieve cooperative physical layer security. The method can be applied to different fields of wireless communication security, cooperative interference, secret communication and the like.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a method for implementing security of a cooperative physical layer, in particular to a method for implementing security of a wireless cooperative physical layer based on optimized layout of interference nodes, which can be applied to wireless communication security, cooperative interference, and confidential communication, etc. field. Background technique [0002] Due to the poor reliability of wireless communication links, the rapid growth of computing power of eavesdroppers, and the limited computing power of wireless terminals, key encryption security technology based on computational complexity can no longer guarantee the security of wireless communication networks. In order to make up for the shortcomings of key encryption security technology, physical layer security technology is proposed as an important means of wireless communication security. From the persp...

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Problems solved by technology

This method focuses on what kind of incentive strategies the cooperative jamming nodes adopt at different locations to maximize physical layer security. Although the method also considers the location of the cooperative jamming nodes, it does not focus on how to actively deploy cooperative jamming artificially. Nodes, optimally select the position of the cooperative interference node, resulting in low secrecy capacity that can be provided, and the effect on the realization of cooperative physical layer security is very limited

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