标题： 波形设计用于无线功率传输 显示英文标题

标题： Waveform Design for Wireless Power Transfer

摘要： 远场无线电力传输（WPT）近年来引起了广泛关注。尽管取得了快速进展，但过去十年中，研究界的重点主要集中在改进能量收集器（所谓的整流天线）的设计上，而忽略了发射机设计的影响。受无线通信工具的启发，我们研究了发射波形的设计和优化，以提高整流天线输出的直流功率。我们推导了整流天线非线性的可处理模型，并利用该模型设计了适应信道状态信息（CSI）的新型多正弦波形。通过实际仿真，在基于整流天线线性模型设计的自适应波形和非自适应波形方面，展示了显著的增益（以收集的直流功率为指标）。我们还分析计算了各种波形在收集能量方面的理论缩放规律，作为正弦波数量和发射天线数量的函数。这些缩放规律突出了在WPT中发射端CSI知识的优势，以及基于非线性整流天线模型的WPT设计优于基于线性模型的设计。最后，我们介绍了一种有前景的架构，该架构依赖于专用于WPT的大规模多正弦多天线波形。 显示英文摘要

摘要： Far-field Wireless Power Transfer (WPT) has attracted significant attention in recent years. Despite the rapid progress, the emphasis of the research community in the last decade has remained largely concentrated on improving the design of energy harvester (so-called rectenna) and has left aside the effect of transmitter design. Inspired by tools from wireless communication, we study the design and optimization of transmit waveform so as to enhance the DC power at the output of the rectenna.We derive a tractable model of the non-linearity of the rectenna and use it to design novel multisine waveforms that are adaptive to the channel state information (CSI). Through realistic simulations, significant gains (in terms of harvested DC power) are demonstrated over adaptive waveforms designed based on a linear model of the rectenna and over non-adaptive waveforms. We also compute analytically the theoretical scaling laws of the harvested energy for various waveforms as a function of the number of sinewaves and transmit antennas. Those scaling laws highlight the benefits of CSI knowledge at the transmitter in WPT and of a WPT design based on a non-linear rectenna model over a linear model. Finally, we introduce a promising architecture relying on large-scale multisine multi-antenna waveforms dedicated to WPT.