Communication system and method for improving security performance of physical layer by energy station

Abstract

The invention relates to a communication system and method for improving the security performance of a physical layer by an energy station. The communication system comprises a source node, a legitimate receiving node, an eavesdropping receiving node and the energy station; the energy station is equipped with N antennas, the source node is equipped with M antennas, and the legitimate receiving node and the eavesdropping receiving node are equipped with a single antenna respectively; the energy station and the source node constitute a wireless energy transmission subsystem; the source node and the legitimate receiving node constitute a wireless signal transmission subsystem; the energy station, the legitimate receiving node and the eavesdropping receiving node constitute a wireless interference signal transmission subsystem; and the energy station is provided with a beamformer w. The invention further relates to a method for improving the security performance of the physical layer by the energy station. The energy station can not only serve as a terminal to provide energy for the source node, but also can serve as an interference source and transmit a wireless interference signal, and the wireless interference signal generates relatively large interference to the eavesdropping receiving node, so the security performance of the physical layer is greatly improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a communication system and method for improving physical layer security performance by utilizing an energy station. Background technique [0002] With the rapid development of wireless communication technology, various wireless communication devices have increased dramatically, and the security problems of wireless communication have become increasingly serious. The traditional wireless communication security mechanism is mainly related to encryption technology based on cryptography, but with the rapid improvement of computer computing power, the confidentiality foundation of this technology has become unreliable, and physical layer security technology has emerged as the times require. [0003] From the perspective of information theory, the physical layer security technology of wireless communication uses the uniqueness and reciprocity of physical channels to realize information encryp...

AI Technical Summary

Problems solved by technology

At present, although the new wireless communication network architecture introduced into the power station has attracted widespread international attention, the related research work is still in its infancy. The application of the power station is only limited to providing energy for mobile devices, and the potential of the power station has not yet been fully explored. the potential

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