  Full duplex (FD) communication enables simultaneous transmission and
reception on the same frequency band. Though it has the potential of doubling
the throughput on isolated links, in reality, higher interference and
asymmetric traffic demands in the uplink and downlink could significantly
reduce the gains of FD operations. In this paper, we consider the application
of FD operation in self-backhauled small cells, where multiple FD capable small
cell base stations (SBS) are wirelessly backhauled by a FD capable macro-cell
BS (MBS). To increase the capacity of the backhaul link, the MBS is equipped
with multiple antennas to enable space division multiple access (SDMA). A
scheduling method using back-pressure algorithm and geometric programming is
proposed for link selection and interference mitigation. Simulation results
show that with FD SDMA backhaul links, the proposed scheduler almost doubles
throughput under asymmetric traffic demand and various network conditions.
