  In this paper, a wireless powered communication network (WPCN) consisting of
a hybrid access point (H-AP) and multiple user equipment (UEs), all of which
operate in full-duplex (FD), is described. We first propose a transceiver
structure that enables FD operation of each UE to simultaneously receive energy
in the downlink (DL) and transmit information in the uplink (UL). We then
provide an energy usage model in the proposed UE transceiver that accounts for
the energy leakage from the transmit chain to the receive chain. It is shown
that the throughput of an FD WPCN using the proposed FD UEs can be maximized by
optimally allocating the UL transmission time to the UEs by solving a convex
optimization problem. Simulation results reveal that the use of the proposed FD
UEs efficiently improves the throughput of a WPCN with practical
self-interference cancellation (SIC) capability at the H-AP. With current SIC
technologies reducing the power of the residual self-interference to the level
of background noise, the proposed FD WPCN using FD UEs achieves 18% and 25 % of
throughput gain as compared to the conventional FD WPCN using HD UEs and HD
WPCN, respectively.
