Physical Layer Security in ۵G Networks Using ArtificialInterference

This paper presents an innovative method for enhancing security in the physical layer of multi-antennawireless networks. The proposed system utilizes four key techniques to counter security threats: relayingwith Decode-and-Forward (DF) protocol, cooperative interference, artificial interference transmissionbeamforming using Maximum Ratio Transmission (MRT) scheme, and Receive Zero-Forcing (RZF)beamforming. The system structure consists of three authorized multi-antenna nodes and one eavesdroppingnode. Information transfer occurs in two stages, during which the aforementioned techniques are employedto reduce the Signal-to-Interference-plus-Noise Ratio (SINR) at the eavesdropping node and improvecommunication quality between authorized nodes. The main innovation of this research lies in itscooperative approach to generating artificial interference and simultaneous data reception at authorizednodes. Simulation results demonstrate that this comprehensive approach significantly reduces theprobability of eavesdropping while substantially increasing the overall system security.

کلیدواژه ها:

Physical layer security ، beamforming ، artificial interference ، cooperative jamming ، maximum ratio transmission (MRT).