The precision of link-level theoretical performance analysis for emerging wireless communication paradigms is critical. Recent studies have demonstrated the excellent fitting capabilities of the mixture gamma (MG) distribution in representing small-scale fading in outdoor terahertz (THz)-band scenarios. Our study establishes an in-depth performance analysis for outdoor point-to-point THz links under realistic configurations, incorporating MG small-scale fading combined with the misalignment effect. We derive closed-form expressions for the bit-error probability, outage probability, and ergodic capacity. Furthermore, we conduct an asymptotic analysis of these metrics at high signal-to-noise ratios and derive the necessary convergence conditions. Simulation results, leveraging precise measurement-based channel parameters in various configurations, closely align with the derived analytical equations.
@article{arxiv.2409.00836,
title = {Performance Analysis of Outdoor THz Links under Mixture Gamma Fading with Misalignment},
author = {Hakim Jemaa and Simon Tarboush and Hadi Sarieddeen and Mohamed-Slim Alouini and Tareq Y. Al-Naffouri},
journal= {arXiv preprint arXiv:2409.00836},
year = {2024}
}