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arXiv 1801.06374cs.ITmath.IT
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IoT分布式天线系统中能量有效的SWIPT

Energy-Efficient SWIPT in IoT Distributed Antenna Systems

Yuwen Huang, Mengyu Liu, Yuan Liu

摘要:

物联网(IoT)的快速增长显著增加了无线设备的功耗。同时无线信息和电力传输(SWIPT)是物联网设备可持续运行的一种有前途的解决方案。在本文中,我们研究了基于SWIPT的分布式天线系统(DAS)中的能量效率(EE),其中在物联网设备中应用功率分配(PS),通过改变分布式天线(DA)端口的发射功率和物联网设备的PS比率来协调能量收集(EH)和信息解码(ID)过程。在单个物联网设备的情况下,我们通过基于Karush-Kuhn-Tucker(KKT)条件导出一些有用的性质来找到最佳的封闭形式解,并且该解不需要数值迭代。对于多个IoT设备的情况,我们提出了一种有效的次优算法来解决EE最大化问题。仿真结果表明,在单个和多个物联网设备的情况下,与其他基准方案相比,所提方案都具有更好的EE性能。

英文摘要:

The rapid growth of Internet of Things (IoT) dramatically increases power consumption of wireless devices. Simultaneous wireless information and power transfer (SWIPT) is a promising solution for sustainable operation of IoT devices. In this paper, we study energy efficiency (EE) in SWIPT-based distributed antenna system (DAS), where power splitting (PS) is applied at IoT devices to coordinate the energy harvesting (EH) and information decoding (ID) processes by varying transmit power of distributed antenna (DA) ports and PS ratios of IoT devices. In the case of single IoT device, we find the optimal closed-form solution by deriving some useful properties based on Karush-Kuhn-Tucker (KKT) conditions and the solution is no need for numerical iterations. For the case of multiple IoT devices, we propose an efficient suboptimal algorithm to solve the EE maximization problem. Simulation results show that the proposed schemes achieve better EE performance compared with other benchmark schemes in both single and multiple IoT devices cases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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