On the Performance of THz Wireless Systems over $α$-$\mathcal{F}$ Channels with Beam Misalignment, Mobility and Hardware Impairments
This paper investigates the performance of terahertz (THz) wireless systems over the $α$-$\mathcal{F}$ fading channels with beam misalignment, mobility and hardware impairments. New expressions are derived for the probability density, cumulative distribution, and higher-order moments of the instantaneous signal-to-noise ratio (SNR). Building upon the aforementioned expressions, we extract novel formulas for the outage probability (OP), average symbol error probability, and average channel capacity. Asymptotic expressions are also derived, providing useful insights into system performance in the high-SNR regime. Furthermore, an upper bound on the capacity metric is obtained. Monte Carlo simulation results are presented to validate the developed analytical framework.