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 expressions 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 closedform expressions 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.%针对三节点放大转发中继系统,研究了基于功率分配能量采集的全双工中继传输方案.在中继配置大规模天线的情况下,提出了三种天线选择方法,并通过合理的假设分别推导了三种天线选择方法的速率的近似闭合表达式,并设计了天线选择模式切换方案.基于三种不同的天线选择方法,该文分析了基于功率分配采集协议中的最优功率分配因子以及不同方案的算法复杂度.最后,通过蒙特卡洛仿真证明了闭合表达式的准确性,并基于发射功率和信道增益分析了三种方案的优缺点.其中在大发射功率的情况下,方案一的性能最优;在小发射功率的情况下,方案二的性能最优;在中等发射功率的情况下,折中的方案三的性能最优.
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