Department of Engineering, La Trobe University, Bundoora 3086, Australia.
Department of Computer Science and Information Technology, La Trobe University, Bundoora 3086, Australia.
Sensors (Basel). 2020 Feb 23;20(4):1222. doi: 10.3390/s20041222.
In this paper, we investigated a buffer-aided decode-and-forward (DF) wireless relaying system over fading channels, where the source and relay harvest radio-frequency (RF) energy from a power station for data transmissions. We derived exact expressions for end-to-end throughput considering half-duplex (HD) and full-duplex (FD) relaying schemes. The numerical results illustrate the throughput and energy efficiencies of the relaying schemes under different self-interference (SI) cancellation levels and relay deployment locations. It was demonstrated that throughput-optimal relaying is not necessarily energy efficiency-optimal. The results provide guidance on optimal relaying network deployment and operation under different performance criteria.
在本文中，我们研究了衰落信道下的一种基于缓冲辅助的解码转发（DF）无线中继系统，其中源和中继从电站接收射频（RF）能量以进行数据传输。我们推导了在半双工（HD）和全双工（FD）中继方案下考虑端到端吞吐量的精确表达式。数值结果说明了在不同的自干扰（SI）消除水平和中继部署位置下中继方案的吞吐量和能量效率。结果表明，吞吐量最优的中继不一定是能量效率最优的。这些结果为在不同性能标准下的最佳中继网络部署和操作提供了指导。
