  Simultaneous use of high-end wearable wireless devices like smart glasses is
challenging in a dense indoor environment due to the high nature of
interference. In this scenario, the millimeter wave (mmWave) band offers
promising potential for achieving gigabits per second throughput. Here we
propose a novel system model for analyzing system performance of mmWave based
communication among wearables. The proposed model accounts for the non-isotropy
of the indoor environment and the effects of reflections that are predominant
for indoor mmWave signals. The effect of human body blockages are modeled and
the system performance is shown to hugely vary depending on the user location,
body orientation and the density of the network. Closed form expressions for
spatially averaged signal to interference plus noise ratio distribution are
also derived as a function of the location and orientation of a reference user.
