  Recent studies indicate the feasibility of full-duplex (FD) bidirectional
wireless communications. Due to its potential to increase the capacity,
analyzing the performance of a cellular network that contains full-duplex
devices is crucial. In this paper, we consider maximizing the weighted sum-rate
of downlink and uplink of an FD heterogeneous OFDMA network where each cell
consists of an imperfect FD base-station (BS) and a mixture of half-duplex and
imperfect full-duplex mobile users. To this end, first, the joint problem of
sub-channel assignment and power allocation for a single cell network is
investigated. Then, the proposed algorithms are extended for solving the
optimization problem for an FD heterogeneous network in which intra-cell and
inter-cell interferences are taken into account. Simulation results demonstrate
that in a single cell network, when all the users and the BSs are perfect FD
nodes, the network throughput could be doubled. Otherwise, the performance
improvement is limited by the inter-cell interference, inter-node interference,
and self-interference. We also investigate the effect of the percentage of FD
users on the network performance in both indoor and outdoor scenarios, and
analyze the effect of the self-interference cancellation capability of the FD
nodes on the network performance.
