摘要
为了提高无人机中继通信系统的频谱利用率,该文提出一种交替中继方法,通过两个无人机中继交替工作,轮流将信息从源端转发到目的端。研究联合优化无人机中继的飞行轨迹和各发射端的发射功率,协调两条中继链路的相互干扰,实现端到端的吞吐量最大化。涉及的优化问题受限于无人机的高度约束、机动约束、防碰撞约束以及各发射端的平均与峰值发射功率约束,是难以求得最优解的非凸优化问题。该文提出一种基于交替最大化和连续凸优化技术的高效迭代算法求解次优解,并用计算机仿真验证了所提算法的有效性。
To improve the spectrum efficiency of the Unmanned Aerial Vehicle(UAV)relaying communication systems,a UAV alternate relay scheme is proposed,where two UAV relays alternately forward information from the source to the destination.To coordinate the interference among the two relaying data links,UAV trajectory and transmit power are investigated to maximize the end-to-end throughput of the UAV alternate relay system.The considered optimization problem is subject to the height,maneuver and collision avoidance constraints of the UAVs and the average and peak transmit power constraints of the source and UAV relays,which is non-convex and difficult to obtain the optimal solution.Nevertheless,an efficient iterative algorithm based on the alternating maximization and successive convex optimization techniques is proposed to obtain a suboptimal solution.Simulation results verify the effectiveness of the proposed algorithm.
作者
张广驰
陈娇
崔苗
陈伟
张景
ZHANG Guangchi;CHEN Jiao;CUI Miao;CHEN Wei;ZHANG Jing(School of Information Engineering,Guangdong University of Technology,Guangzhou 510006,China;Institute of Environmental Geology Exploration of Guangdong Province,Guangzhou 510080,China;China Academic of Electronics and Information Technology,Beijing 100043,China)
出处
《电子与信息学报》
EI
CSCD
北大核心
2021年第12期3554-3562,共9页
Journal of Electronics & Information Technology
基金
广东省科技计划(2017B090909006,2018A050506015,2019B010119001,2020A050515010,2020A0505100012)
广东特支计划项目(2019TQ05X409)。
关键词
无人机通信
交替中继
功率分配
轨迹优化
Unmanned Aerial Vehicle(UAV)communication
Alternate relay
Power allocation
Trajectory optimization
作者简介
张广驰:男,1982年生,教授,研究方向为新一代无线通信技术;陈娇:女,1995年生,硕士生,研究方向为新一代无线通信技术;通信作者:崔苗:女,1978年生,讲师,研究方向为新一代无线通信网络.cuimiao@gdut.edu.cn;陈伟:男,1979年生,高级工程师,研究方向为重大地质灾害防灾减灾与地下水风险管控;张景:男,1974年生,教授,研究方向为星地融合通信组网传输技术.
