Rapid technological advances in the domain of Wireless Power Transfer (WPT) pave the way for novel methods for power management in systems of wireless devices and recent research works have already started considering algorithmic solutions for tackling emerging problems. However, many of those works are limited by the system modelling, and more specifically the one-dimensional abstraction suggested by Friis formula for the power received by one antenna under idealized conditions given another antenna some distance away. Different to those works, we use a model which arises naturally from fundamental properties of the superposition of energy fields. This model has been shown to be more realistic than other one-dimensional models that have been used in the past and can capture superadditive and cancellation effects. Under this model, we define two new interesting problems for configuring the wireless power transmitters so as to maximize the total power in the system and we prove that the first problem can be solved in polynomial time. We present a distributed solution that runs in pseudo-polynomial time and uses various knowledge levels and we provide theoretical performance guarantees. Finally, we design three heuristics for the second problem and evaluate them via simulations.
翻译:无线电源传输领域的快速技术进步为无线电源传输系统电源管理系统的新颖方法铺平了道路,最近的研究工程已经开始考虑解决新出现问题的算法解决办法。然而,许多这类工程都受到系统建模的限制,更具体地说,Friis公式对在理想条件下在离另一天线一定距离的情况下一个天线所接收的电的单维抽取方法的限制。与这些工程不同,我们使用的模型是能源领域叠加的基本特性所自然产生的模型。这个模型已经证明比过去使用的其他一维模型更现实,能够捕捉到超添加和取消效应。在这个模型下,我们界定了两个新的有趣的问题来配置无线电源发射器,以便最大限度地发挥系统的全部功率。我们证明第一个问题可以在多元时间内解决。我们提出了一个分布式的解决方案,在假极时使用各种知识水平,我们提供了理论性表现保证。最后,我们为第二个问题设计了三个超值模型,并通过模拟来评估它们。