In this paper, the performance of in-band fullduplex OFDM relaying systems with energy-harvesting and selfinterference cancellation in the polarization domain is analyzed.
Specifically, we use the time switching-based relaying protocol
to implement energy harvesting. The harvested energy is used
by the relay to forward the transmitted information from the
source. To cancel the self-interference, the polarization-enabled
digital self-interference cancellation scheme is deployed at the
relay. Our simulation results show that the full-duplex OFDM
energy harvesting relaying system almost doubles the throughput,
while maintaining the same bit error performance by a modest
increase in the signal-to-noise ratio compared to the half-duplex
OFDM energy harvesting relaying system. It is also revealed
that the optimal time splitting factor should be less than 0.3 to
maximize the full-duplex system throughput.