2020/02/01 by Ramy Amer, Amer, Ramy, Walid Saad +5 · 1 citation
Engineering · #Advanced MIMO Systems Optimization #Antenna Design and Analysis #FOS: Computer and information sciences #FOS: Electrical engineering #Information Theory (cs.IT) #Signal Processing (eess.SP) #UAV Applications and Optimization #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2002.00294
openalex publication_date 2020/02/01 · openalex created_date 2022/07/26 · openalex updated_date 2026/07/28
Providing seamless connectivity to unmanned aerial vehicle user equipments\n(UAV-UEs) is very challenging due to the encountered line-of-sight interference\nand reduced gains of down-tilted base station (BS) antennas. For instance, as\nthe altitude of UAV-UEs increases, their cell association and handover\nprocedure become driven by the side-lobes of the BS antennas. In this paper,\nthe performance of cellular-connected UAV-UEs is studied under 3D practical\nantenna configurations. Two scenarios are studied: scenarios with static,\nhovering UAV- UEs and scenarios with mobile UAV-UEs. For both scenarios, the\nUAV-UE coverage probability is characterized as a function of the system\nparameters. The effects of the number of antenna elements on the UAV-UE\ncoverage probability and handover rate of mobile UAV-UEs are then investigated.\nResults reveal that the UAV-UE coverage probability under a practical antenna\npattern is worse than that under a simple antenna model. Moreover,\nvertically-mobile UAV-UEs are susceptible to altitude handover due to\nconsecutive crossings of the nulls and peaks of the antenna side-lobes.\n