  This paper proposes a virtual harvest-transmit model and a
harvest-transmit-store model for amplify-and-forward full-duplex relay (FDR)
networks with power splitting-based simultaneous wireless information and power
transfer. The relay node employs a battery group consisting of two rechargeable
batteries. By switching periodically between two batteries for charging and
discharging in two consecutive time slots of each transmission block, all the
harvested energy in each block has been applied for full duplex transmission in
the virtual harvest-transmit model. By employing energy scheduling, the relay
node switches among the harvesting, relaying, harvesting-relaying, and idle
behaviors at a block level, so that a part of the harvested energy in a block
can be scheduled for future usage in the harvest-transmit-store model. A greedy
switching policy is designed to implement the harvest-transmit-store model,
where the FDR node transmits when its residual energy ensures decoding at the
destination. Numerical results verify the outage performance of the proposed
schemes.
