标题： 无人机通信：障碍物对信道特性的影响 显示英文标题

标题： UAV Communications: Impact of Obstacles on Channel Characteristics

摘要： 近年来，无人驾驶飞行器（UAVs）已被用作携带Wi-Fi接入点（APs）和蜂窝基站（BSs）的有效平台，从而实现了低成本、灵活且具有高质量服务（QoS）的无线网络。 下一代无线通信将越来越多地依赖于高频段，这些频段容易被障碍物阻挡。 尚未完全解决的关键概念之一是在考虑障碍物的情况下将无人机定位在最佳坐标上。 为了确保无人机与用户设备（UE）之间的视线（LoS），提高QoS，并建立覆盖范围最大的可靠无线链路，必须将障碍物整合到所提出的定位算法中。 本文介绍了一种基于仿真的测量方法，用于在简单场景中表征空对地（AG）信道。 通过考虑障碍物，我们提出了一个关于信道表征的新观点。 在吞吐量、数据包交付、数据包丢失和延迟方面，结果是通过所提出的定位方法进行比较的。 显示英文摘要

摘要： In recent years, Unmanned Aerial Vehicles (UAVs) have been utilized as effective platforms for carrying Wi-Fi Access Points (APs) and cellular Base Stations (BSs), enabling low-cost, agile, and flexible wireless networks with high Quality of Service (QoS). The next generation of wireless communications will rely on increasingly higher frequencies, which are easily obstructed by obstacles. One of the most critical concepts yet to be fully addressed is positioning the UAV at optimal coordinates while accounting for obstacles. To ensure a line of sight (LoS) between UAVs and user equipment (UE), improve QoS, and establish reliable wireless links with maximum coverage, obstacles must be integrated into the proposed placement algorithms. This paper introduces a simulation-based measurement approach for characterizing an air-to-ground (AG) channel in a simple scenario. By considering obstacles, we present a novel perspective on channel characterization. The results, in terms of throughput, packet delivery, packet loss, and delay, are compared using the proposed positioning approach.