Trajectory Planning for OTFS-Based UAV Communications

作     者：Rui Han Jiahao Ma Lin Bai Rui Han;Jiahao Ma;Lin Bai

作者机构：Tsinghua Space CenterTsinghua UniversityBeijing 100084China School of Cyber Science and TechnologyBeihang UniversityBeijing 100191China 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2023年第20卷第1期

页      面：114-124页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 0804[工学-仪器科学与技术] 080402[工学-测试计量技术及仪器] 

基　　金：supported by the National Key Research and Development Program of China(Grant 2020YFB1804800) the National Natural Science Foundation of China(Grant U22B2008 and Grant 61922010) the Beijing Natural Science Foundation(Grant JQ20019)。 

主　　题：orthogonal time frequency space(OTFS) orthogonal frequency division multiplexing(OFDM) unmanned aerial vehicle(UAV) 6G trajectory planning 

摘      要：Unmanned aerial vehicles(UAVs)have attracted growing research interests in recent years,which can be used as cost-effective aerial platforms to transmit collected data packets to ground access points(APs).Thus,it is crucial to investigate robust airto-ground(A2G)wireless links for high-speed UAVs.However,the A2G wireless link is unstable as it suffers from large path-loss and severe Doppler effect due to the high mobility of UAVs.In order to meet these challenges,we propose an orthogonal time frequency space(OTFS)-based UAV communication system to relief the Doppler effect.Besides,considering that the energy of UAV is limited,we optimize the trajectory planning of UAV to minimize the energy consumption under the constraints of bit error rate(BER)and transmission rate,where the Doppler compensation is taken into account.Simulation results show that the performance of OTFS-based UAV system is superior to orthogonal frequency division multiplexing(OFDM)-based UAV systems,which can accomplish transmission tasks over shorter distances with lower energy consumption.