Secrecy Rate Analysis of STAR-RIS in Presence of Energy Harvesting Eavesdroppers

Autor:	Kavianinia, Mohammad Reza, Emadi, Mohammad Javad
Rok vydání:	2022
Předmět:	Computer Science - Information Theory Electrical Engineering and Systems Science - Signal Processing
Druh dokumentu:	Working Paper
Popis:	This work peruses a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) based wireless system wherein untrusted energy harvesting nodes wiretap the legitimate signal. The achievable secrecy rate and the harvested energy for multicast communication are computed as functions of STAR-RIS transmission and reflection coefficients (TARCs). Thus, to maximize the secrecy rate while satisfying the minimum required harvested energies, the non-convex optimization problem is investigated. By using the Dinkelbach transformation and semi-definite relaxation technique, the optimization problem is transformed into a convex problem. Eventually, the numerical results are reported to specify the effects of the size of the STAR-RIS and optimizing its TARCs elements on magnifying the secrecy rate-energy harvesting region. Comment: 6 Pages, 5 figures, This work has been submitted for possible publication
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2209.12105 Zobrazit plný text záznamu View this record from Arxiv