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arXiv 2203.08282eess.SP
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通过固定翼无人机实现长距离mmWave空中回程链路:性能和设计

Enabling Long mmWave Aerial Backhaul Links via Fixed-Wing UAVs: Performance and Design

Mohammad Taghi Dabiri, Mazen Omar Hasna, Nizar Zorba, Tamer Khattab

摘要:

我们提出了一种基于固定翼无人机(无人机)的毫米波(mmWave)回程链路,该链路是一种经济高效且易于部署的解决方案,可将灾难或偏远地区连接到最近的核心网络。首先,我们充分表征单中继固定翼无人机基于通信系统考虑到现实的物理参数的影响,如无人机的圆形路径,飞行路径的临界点,障碍物的高度和位置,飞行高度,跟踪误差,无人机的振动的严重程度,真实的3D天线方向图,毫米波大气信道损耗,温度和气压。其次,我们推导出分布的信号噪声比(SNR)度量,这是基于一系列狄拉克δ函数的总和。使用SNR分布,我们推导出封闭形式的表达式中断概率和遍历容量的考虑系统作为所有系统参数的函数。为了提供一个可接受的服务质量较长的链路长度,我们扩展的解析表达式的多中继系统。通过Monte-Carlo模拟验证了封闭式表达式的准确性。最后,通过提供足够的仿真结果,我们调查的关键信道参数,如天线方向图增益和飞行路径上所考虑的系统的性能的影响,我们仔细分析这些参数之间的关系,以最大限度地提高平均信道容量。

英文摘要:

We propose a fixed wing unmanned aerial vehicles (UAV)-based millimeter wave (mmWave) backhaul links, that is offered as a cost effective and easy to deploy solution, to connect a disaster or remote area to the nearest core network. First, we fully characterize the single relay fixed-wing UAV-based communication system by taking into account the effects of realistic physical parameters, such as the UAV's circular path, critical points of the flight path, heights and positions of obstacles, flight altitude, tracking error, the severity of UAV's vibrations, the real 3D antenna pattern, mmWave atmospheric channel loss, temperature and air pressure. Second, we derive the distribution of the signal-to-noise ratio (SNR) metric, which is based on the sum of a series of Dirac delta functions. Using the SNR distribution, we derive closed-form expressions for the outage probability and the ergodic capacity of the considered system as a function of all system parameters. To provide an acceptable quality of service for longer link lengths, we extend the analytical expressions to a multi-relay system. The accuracy of the closed-form expressions are verified by Monte-Carlo simulations. Finally, by providing sufficient simulation results, we investigate the effects of key channel parameters such as antenna pattern gain and flight path on the performance of the considered system; and we carefully analyze the relationships between these parameters in order to maximize the average channel capacity.

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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