  The abundance of unlicensed spectrum in the 60 GHz band makes it an
attractive alternative for future wireless communication systems. Such systems
are expected to provide data transmission rates in the order of multi-gigabits
per second in order to satisfy the ever-increasing demand for high rate data
communication. Unfortunately, 60 GHz radio is subject to severe path loss which
limits its usability for long-range outdoor communication. In this work, we
propose a multi-hop 60 GHz wireless network for outdoor communication where
multiple full-duplex buffered relays are used to extend the communication range
while providing end-to-end performance guarantees to the traffic traversing the
network. We provide a cumulative service process characterization for the 60
GHz outdoor propagation channel with self-interference in terms of the moment
generating function (MGF) of its channel capacity. We then use this
characterization to compute probabilistic upper bounds on the overall network
performance, i.e., total backlog and end-to-end delay. Furthermore, we study
the effect of self-interference on the network performance and propose an
optimal power allocation scheme to mitigate its impact in order to enhance
network performance. Finally, we investigate the relation between relay density
and network performance under a total power budget constraint. We show that
increasing relay density may have adverse effects on network performance unless
self-interference can be kept sufficiently small.
