  This paper focuses on delivering quantified results for the evaluation of the
aggregated impact of stochastic antenna misalignment, multipath fading and
hardware imperfections on the terahertz (THz) wireless fiber extenders. In this
line, we present the appropriate signal model that accommodates the different
technical and environmental parameters. In particular, it takes into
consideration the antenna gains, the central frequency, the transmission range,
the environmental conditions, i.e. temperature, humidity and pressure, the
spatial jitter between the transmitter and receiver antennas, which results to
antenna misalignment, the intensity of hardware imperfections, and the
stochastic behavior of the wireless channel. Based on this model, we assess the
joint impact of antenna misalignment and multipath fading, by providing Monte
Carlo simulation results for the channels ergodic capacity.
