Adaptive Link Optimization for 802.11 UAV Uplink Using a Reconfigurable Antenna
Adaptive Link Optimization for 802.11 UAV Uplink Using a Reconfigurable Antenna
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使用可重新配置天线的 802.11 无人机上行链路自适应链路优化
DOI：
10.1109/milcom.2018.8599696
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
K. Dandekar
中科院分区：
文献类型：
--
作者：
Stephen Wolfe;Simon Begashaw;Yuqiao Liu;K. Dandekar
本文提出了一种低成本和灵活的实验测试平台，空中通信研究沿着的实施和实验评估的空-地802.11 g链路与自适应波束控制天线系统。该系统由一个软件定义无线电（SDR）平台，和一个方向图可重构天线安装在一个六旋翼无人机（UAV）。首先，系统设计方面的测试进行了说明。可重构天线的性能，其特征在于通过辐射方向图测量，而天线安装在无人机的下腹部。为了提高链路质量，在机载软件无线电测试平台上实现了一种低复杂度的基于强化学习的自适应天线选择算法。我们提出了在各种室内和室外的飞行场景中获得的SNR测量。结果表明，在视距（LOS）和非视距（NLOS）两种情况下，利用机载可重构天线和智能天线选择策略，与全向天线相比，可提供更高的平均信噪比，并且对同频干扰具有更强的抗干扰能力。
This paper presents a low-cost and flexible experimental testbed for aerial communication research along with an implementation and experimental evaluation of an aerial-to-ground 802.11g link with an adaptive beamsteering antenna system. The system consists of a software-defined radio (SDR) platform, and a pattern reconfigurable antenna mounted on a hexacopter unmanned aerial vehicle (UAV). First, the system design aspects of the tesbed are described. The performance of the reconfigurable antenna is characterized through radiation pattern measurements while the antenna is mounted on the underbelly of the UAV. A low complexity reinforcement learning based adaptive antenna selection algorithm is implemented on the aerial SDR testing platform to enhance the link quality. We present SNR measurements obtained during various indoor and outdoor flight scenarios. The results show that utilizing a reconfigurable antenna and intelligent antenna selection strategy onboard a UAV provides a higher mean SNR compared to an omni-directional antenna in both line of sight (LOS) and non-line of sight (NLOS) scenarios, and is more resilient to co-channel interference.
DOI：
10.1109/glocom.2016.7841815
发表时间：
2016
期刊：
GLOBECOM 2016 - Proceedings
影响因子：
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作者：
Begashaw, Simon;Nguyen, Danh H.;Dandekar, Kapil R.
通讯作者：
Dandekar, Kapil R.
具有集成开关控制电路的平面可重构天线
DOI：
10.1109/eucap.2014.6902391
发表时间：
2014
期刊：
EuCAP 2014
影响因子：
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作者：
Patron, Damiano;Dandekar, Kapil R.
通讯作者：
Dandekar, Kapil R.