  This paper presents the theoretical framework for the performance evaluation
of terahertz (THz) wireless fiber extender in the presence of misalignment and
multipath fading. In more detail, after providing the appropriate system model
that incorporates the different operation, design, and environmental
parameters, such as the operation frequency, transceivers antenna gains, the
level of misalignment as well as the stochastic behavior of the channel, we
extract novel closed-form expressions for the ergodic capacity. These
expressions are expected to be used as useful tools for the analysis and design
of such systems. Moreover, several insightful scenarios are simulated. Their
results highlight the importance of taking into account the impact of
misalignment fading when analyzing the performance of the THz wireless fiber
extender.
