  In this letter we consider emulation of a Full Duplex (FD) cellular base
station (BS) by using two spatially separated and coordinated half duplex (HD)
BSs. The proposed system is termed CoMPflex (CoMP for In-Band Wireless Full
Duplex) and at a given instant it serves two HD mobile stations (MSs), one in
the uplink and one in the downlink, respectively. We evaluate the performance
of our scheme by using a geometric extension of the one-dimensional Wyner
model, which takes into account the distances between the devices. The results
show that CoMPflex leads to gains in terms of sum-rate and energy efficiency
with respect to the ordinary FD, as well as with respect to a baseline scheme
based on unidirectional traffic.
