Beamforming Design for Simultaneous Transmission and Reflection Reconfigurable Intelligent Surface Assisted Secure Wireless Communication by considering Imperfect CSI

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Shahcheragh Seyedeh Reyhane; Mohamed pour Kamal

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Journal Paper

Paper Information

Journal: International Journal of Information and Communication Technology Research Year:2025 | Volume:17 | Issue:2 Page(s): 1-8

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Title

Beamforming Design for Simultaneous Transmission and Reflection Reconfigurable Intelligent Surface Assisted Secure Wireless Communication by considering Imperfect CSI

Author(s)

Shahcheragh Seyedeh Reyhane | Mohamed pour Kamal | Issue Writer Certificate

Keywords

Star RIS

Beamforming

secure wireless communication

Abstract

This paper invEStigatES Beamforming dESign for Simultaneous transmission and reflection reconfigurable intelligent surface (Star RIS) assisted ESs communication/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">secure wirelESs communication with three operating protocols (energy splitting (ES), mode switching (MS), and time switching (TS)) with the assumption of the availability of imperfect CSI of two eavESdroppers at BS. We maximize the sum rate of legitimate users by dESigning both active and passive Beamforming at BS and RIS, rESpectively, under the constraint of the limited maximum tolerable rate of eavESdroppers and a limited transmission power budget. The non-convex problem is solved by alternating optimization (AO) for active and passive Beamforming optimization, and also succESsive convex approximation (SCA), and the penalty concave-convex procedure (PCCP). According to the simulation rESulTS, Star-RIS outperforMS conventional RIS, ES mode outperforMS MS and TS, and the performance is higher with lower channel EStimation error.

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