Since 2020, aggregated from related topics
Physical-layer security is a research area that focuses on securing wireless communication systems at the physical layer, which is the most fundamental and critical layer of the communication system. This approach aims to protect the communication system from various types of attacks, including eavesdropping, jamming, and interference. Physical-layer security techniques rely on exploiting the characteristics of the physical transmission medium to enhance the security of the communication system. This can include techniques such as signal masking, artificial noise generation, beamforming, and encryption at the physical layer. Overall, physical-layer security research aims to improve the confidentiality, integrity, and availability of wireless communication systems by addressing vulnerabilities at the physical layer.