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arXiv 2511.03401eess.SP

无线供电夹持天线系统的性能分析

Performance Analysis of Wireless-Powered Pinching Antenna Systems

Kunrui Cao, Jingyu Chen, Panagiotis D. Diamantoulakis, Lei Zhou, Xingwang Li, Yuanwei Liu, George K. Karagiannidis

备注：
13 pages, 8 figures
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AI总结：

本文引入无线供电夹持天线系统（PAS）概念，推导了有损与无损波导下的中断概率和遍历速率闭式表达式，并分析了波导与用户的最优部署，发现存在最优时间分配因子和PS-AP距离以优化系统性能。

摘要：

夹持天线系统（PAS）作为一种开创性范式，通过灵活调整夹持天线（PA）的位置并建立强视距（LoS）链路来增强无线通信，从而降低自由空间路径损耗。本文引入了无线供电PAS的概念，并研究了无线供电PAS的可靠性，以探讨PA在提升无线供电通信（WPC）系统性能方面的优势。此外，我们分别针对实际有损波导情况和理想无损波导情况，推导了中断概率和遍历速率的闭式表达式，并分析了波导和用户的最优部署，为其部署提供有价值的指导。结果表明，吸收系数和用户区域尺寸的增加分别导致更高的波导内和自由空间传播损耗，进而增加无线供电PAS的中断概率并降低其遍历速率。然而，无线供电PAS的性能受吸收系数和波导长度的影响严重，例如，在高吸收系数和长波导条件下，无线供电PAS的中断概率甚至比传统WPC系统更差。而在高吸收系数和长波导条件下，无线供电PAS的遍历速率优于传统WPC系统。有趣的是，无线供电PAS具有最优时间分配因子以及功率站（PS）与接入点（AP）之间的最优距离，以最小化中断概率或最大化遍历速率。此外，PS和AP处于最优距离时分离部署的系统性能优于将PS和AP集成在混合接入点中的系统性能。

英文摘要：

Pinching antenna system (PAS) serves as a groundbreaking paradigm that enhances wireless communications by flexibly adjusting the position of pinching antenna (PA) and establishing a strong line-of-sight (LoS) link, thereby reducing the free-space path loss. This paper introduces the concept of wireless-powered PAS, and investigates the reliability of wireless-powered PAS to explore the advantages of PA in improving the performance of wireless-powered communication (WPC) system. In addition, we derive the closed-form expressions of outage probability and ergodic rate for the practical lossy waveguide case and ideal lossless waveguide case, respectively, and analyze the optimal deployment of waveguides and user to provide valuable insights for guiding their deployments. The results show that an increase in the absorption coefficient and in the dimensions of the user area leads to higher in-waveguide and free-space propagation losses, respectively, which in turn increase the outage probability and reduce the ergodic rate of the wireless-powered PAS. However, the performance of wireless-powered PAS is severely affected by the absorption coefficient and the waveguide length, e.g., under conditions of high absorption coefficient and long waveguide, the outage probability of wireless-powered PAS is even worse than that of traditional WPC system. While the ergodic rate of wireless-powered PAS is better than that of traditional WPC system under conditions of high absorption coefficient and long waveguide. Interestingly, the wireless-powered PAS has the optimal time allocation factor and optimal distance between power station (PS) and access point (AP) to minimize the outage probability or maximize the ergodic rate. Moreover, the system performance of PS and AP separated at the optimal distance between PS and AP is superior to that of PS and AP integrated into a hybrid access point.

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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