Amplify-and-Forward Full-Duplex Relay with Power Splitting-Based Energy Harvesting

According to the three-node amplify-and-forward relay system, the relaying schemes is investigated by combining power splitting based energy harvesting and full-duplex technologies. When the relay is equipped with large scale antennas, three antenna selection schemes are proposed, and the asymptotic closed-form s of the average rate for those schemes are derived based on the reasonable assumptions. The antenna mode switching method is also provided. Based on the three distinct antenna selection methods, we analysis the optimal power allocation factor under the background of PSR and also calculate the complexity of the three antenna selection methods, respectively. Finally, the accuracy of the closed-form s is verified by Monte Carlo simulations, and the advantages and disadvantages are analyzed by varying the transmit power and the channel average gains. The performance of scheme 1 is optimal under the condition of high transmitting power. Scheme 2 outperforms other two schemes with low transmitting power. Under the assumption of moderate transmitting power, the trade-off scheme named scheme 3 is optimal.