Full-Duplex Multiuser Wireless Information and Power Transfer with a Multistage Nonlinear Rectifier Energy Harvesting Model

This letter investigates radio resource allocation for simultaneous wireless information and power transfer between a full-duplex (FD) multiantenna access point (AP) and multiple half-duplex (HD) single-antenna energy harvesting (EH) user equipment devices (UEs). The EH model of an advanced multistage rectifier circuit design is derived and used for radio resource allocation. To account for both downlink (DL) and uplink (UL) traffic for each of the HD UEs, alternating DL and UL communication phases between two UE groups are considered. We use the weighted minimum mean squared error approach to develop an iterative algorithm to maximize the system sum rate, utilizing optimal receive and transmit beamformers.