2020/10/12 by Abdullateef Almohamad, Almohamad, Abdullateef, Ayman Al‐Kababji +7
Engineering · #Advanced Wireless Communication Technologies #Antenna Design and Analysis #FOS: Computer and information sciences #FOS: Electrical engineering #Information Theory (cs.IT) #Signal Processing (eess.SP) #Wireless Communication Security Techniques #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2010.06052
openalex publication_date 2020/10/12 · openalex created_date 2022/07/25 · openalex updated_date 2026/07/28
Employing reconfigurable intelligent surfaces (RIS) is emerging as a\ngame-changer candidate, thanks to their unique capabilities in improving the\npower efficiency and supporting the ubiquity of future wireless communication\nsystems. Conventionally, a wireless network design has been limited to the\ncommunicating end points, i.e., the transmitter and the receiver. In general,\nwe take advantage of the imposed channel state knowledge to manipulate the\ntransmitted signal and to improve the detection quality at the receiver. With\nthe aid of RISs, and to some extent, the propagation channel has become a part\nof the design problem. In this paper, we consider a single-input single-output\ncooperative network and investigate the effect of using RISs in enhancing the\nphysical layer security of the system. Specifically, we formulate an\noptimization problem to study the effectiveness of the RIS in improving the\nsystem secrecy by introducing a weighted variant of the secrecy capacity\ndefinition. Numerical simulations are provided to show the design trade-offs\nand to present the superiority of RIS-assisted networks over the conventional\nones in terms of the system's secrecy performance.\n