论文标题
用于多用户多用户无线功率传递的精制非线性直流建模和最佳波形设计
Refined Nonlinear Rectenna Modeling and Optimal Waveform Design for Multi-User Multi-Antenna Wireless Power Transfer
论文作者
论文摘要
在本文中，我们在多路径频率选择通道中同时研究了从多端纳纳能量发射机（ET）到多个单个Antenna Energy接收器（ERS）的最佳波形设计（WPT）。首先，我们提出了ER整流器中二极管的精制非线性电流电压模型，因此在ER处为输出直流电（DC）电压（DC）电压（DC）电压和相应的收获功率得出新的表达式。利用这种新的Rectenna模型，我们首先考虑了基于无线通道的多键电波设计，并研究了基于多的功率波形设计，以最大程度地利用ER的收获功率。我们提出了两种有效的算法，以找到针对此非凸优化问题的高质量次优溶液。接下来，我们将我们的配方波形设计问题扩展到一般的多ER案例，以最大程度地提高所有ERS收获功率的加权总和，并提出有效的基于Convex功能编程（DCP）基于基于的算法来解决此问题。最后，我们根据新的Rectenna模型与通过模拟相比，基于新的Rectenna模型与现有方案/模型相比，我们提出的波形设计的出色性能。
In this paper, we study the optimal waveform design for wireless power transfer (WPT) from a multi-antenna energy transmitter (ET) to multiple single-antenna energy receivers (ERs) simultaneously in multi-path frequency-selective channels. First, we propose a refined nonlinear current-voltage model of the diode in the ER rectifier, and accordingly derive new expressions for the output direct current (DC) voltage and corresponding harvested power at the ER. Leveraging this new rectenna model, we first consider the single-ER case and study the multisine-based power waveform design based on the wireless channel to maximize the harvested power at the ER. We propose two efficient algorithms for finding high-quality suboptimal solutions to this non-convex optimization problem. Next, we extend our formulated waveform design problem to the general multi-ER case for maximizing the weighted sum of the harvested powers by all ERs, and propose an efficient difference-of-convex functions programming (DCP)-based algorithm for solving this problem. Finally, we demonstrate the superior performance of our proposed waveform designs based on the new rectenna model over existing schemes/models via simulations.
