基于功率分配能量采集的全双工放大转发中继系统

发布时间：2018-01-06 23:24

本文关键词：基于功率分配能量采集的全双工放大转发中继系统　出处：《信号处理》2017年04期 　论文类型：期刊论文

【摘要】：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。
[Abstract]:For a three-node amplifier relay system, a full-duplex relay transmission scheme based on power distribution energy acquisition is studied. Three antenna selection methods are proposed when the relay is equipped with a large scale antenna. The approximate closed expression of the rate of the three antenna selection methods is deduced by reasonable assumptions, and the antenna selection mode switching scheme is designed based on three different antenna selection methods. This paper analyzes the optimal power allocation factor based on power allocation acquisition protocol and the complexity of different schemes. Finally, the accuracy of the closed expression is proved by Monte Carlo simulation. The advantages and disadvantages of the three schemes are analyzed based on the transmission power and channel gain. In the case of small transmission power, the performance of scheme two is optimal. In the case of medium transmission power, the performance of compromise 3 is optimal.
【作者单位】：华侨大学厦门市移动多媒体通信重点实验室;
【基金】：国家自然科学基金(61401165,61362018,61302095) 福建省自然科学基金(2015J01262,2014J01243) 华侨大学中青年教师科研提升资助计划(ZQN-PY407);华侨大学研究生科研创新能力培育计划资助项目(1511401022)
【分类号】：TN929.5
【正文快照】： 1引言传统的无线中继网络受限于电池寿命而无法长时间工作,需要定时更换电池。由于天气的复杂性,传统的自然资源很难解决中继能量供给问题。一种能够获取射频信号所携带能量的无线能量采集技术(SWIPT)有效地解决了这一难题[1]。传统的频分双工技术对于频谱资源浪费严重,如果中

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