Enhancing Secrecy Capacity Using Reconfigurable Intelligent Surfaces in Line-of-Sight (LOS) Scenarios for Beyond 5G Networks

Physical Layer Security (PLS) is a promising approach for securing the Beyond 5G (B5G) wireless networks by exploiting the physical properties of communication channels. Reconfigurable Intelligent Surfaces (RIS) are used to enhance PLS by dynamically controlling signal reflections to favor the legitimate users while degrading eavesdropper channels. This paper focuses on using RIS to improve the secrecy capacity in Line-of-Sight (LOS) scenarios.