On the Secrecy of RIS-aided THz Wireless System subject to $\alpha-\mu$ fading with Pointing Errors

TL;DR

This paper analyzes the secrecy performance of RIS-assisted THz wireless systems under $eta- ext{mu}$ fading with pointing errors, deriving SOP and IP expressions validated by simulations.

Contribution

It provides new analytical expressions for SOP and IP in RIS-enabled THz systems considering $eta- ext{mu}$ fading and pointing errors, with validation through simulations.

Findings

Analytical SOP and IP expressions are accurate under various parameters.

RIS phase shift optimization enhances secrecy performance.

Monte Carlo simulations confirm the theoretical results.

Abstract

The study examines the secrecy outage probability (SOP) and intercept probability (IP) of a reflecting intelligent surface (RIS)-enabled THz wireless network experiencing $\alpha-\mu$ fading with pointing errors. Specifically, the base station (BS) sends information to a legitimate user $\ell$ via the RIS while an eavesdropper $e$ tries to overhear the conversation. Furthermore, receive nodes are equipped with a single antenna, and the RIS phase shifts were selected to boost the SNR at node $\ell$. Elementary functions are used to accurately approximate the statistical features of channel gain in BS-$\ell$ and BS-$e$ links, leading to SOP and IP approximate and asymptotic expressions. Monte Carlo simulation validates all analytical findings for different system parameters' values.