Self-energy recycling (sER), which allows transmit energy re-utilization, has emerged as a viable option for improving the energy efficiency (EE) in low-power Internet of Things networks. In this work, we investigate its benefits also in terms of reliability improvements and compare the performance of full-duplex (FD) and half-duplex (HD) schemes when using multi-antenna techniques in a communication system. We analyze the trade-offs when considering not only the energy spent on transmission but also the circuitry power consumption, thus making the analysis of much more practical interest. In addition to the well known spectral efficiency improvements, results show that FD also outperforms HD in terms of reliability. We show that sER introduces not only benefits in EE matters but also some modifications on how to achieve maximum reliability fairness between uplink and downlink transmissions, which is the main goal in this work. In order to achieve this objective, we propose the use of a dynamic FD scheme where the small base station (SBS) determines the optimal allocation of antennas for transmission and reception. We show the significant improvement gains of this strategy for the system outage probability when compared to the simple HD and FD schemes.
翻译:自能循环利用(SER)是能够传输能源的再利用的自能循环利用(sER)的一个可行的选择,在低功率Things互联网网络中,它已成为提高能源效率(EEE)的一个可行选择,在这项工作中,我们从可靠性的提高的角度调查其好处,比较在通信系统中使用多线传输技术和半线传输(HD)的性能。我们不仅在考虑输电所用能源,而且考虑电路电消耗时分析权衡得失,从而分析更多的实际利益。除了众所周知的光谱效率改进外,结果显示FD在可靠性方面也优于HD。我们表明,SER不仅在E问题上带来好处,而且在如何实现最大可靠性、连通和下链传输(HD)之间最大程度的公平性方面作了一些修改,这是这项工作的主要目标。为了实现这一目标,我们提议使用动态的FD计划,即小型基地台站(SBSBS)确定传输和接收天线的最佳分配。我们展示了这一战略在与简单的HDD和DF计划相比,在系统超出概率方面的巨大改进。