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Transceiver hardware impairment (THI) is inevitable for high-date rateterahertz (THz) communication. Existing statistical analysis either neglectsTHI's effect or provides approximate results when analyzing the performance ofthe THz system combined with channel fading and antenna misalignment. In thispaper, we develop exact analytical expressions for the average signal-to-noiseratio (SNR), ergodic capacity, and average bit-error-rate (BER) performance ofa THz wireless link under the combined effect of $\alpha$-$\mu$ fading channel,zero-boresight pointing errors, and the Gaussian distributed THI. We alsoderive asymptotic expressions for the outage probability and average BER, whichshows that the diversity order of the THz link is independent of THI'sparameters. Simulations validate the derived analytical results and demonstratethe impact of the THI parameters on the THz performance.

Exact Performance Analysis of THz Link Under Transceiver Hardware Impairments