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无人机交替中继通信及其轨迹优化和功率分配研究

张广驰 陈娇 崔苗 陈伟 张景

张广驰, 陈娇, 崔苗, 陈伟, 张景. 无人机交替中继通信及其轨迹优化和功率分配研究[J]. 电子与信息学报, 2021, 43(12): 3554-3562. doi: 10.11999/JEIT200684
引用本文: 张广驰, 陈娇, 崔苗, 陈伟, 张景. 无人机交替中继通信及其轨迹优化和功率分配研究[J]. 电子与信息学报, 2021, 43(12): 3554-3562. doi: 10.11999/JEIT200684
Guangchi ZHANG, Jiao CHEN, Miao CUI, Wei CHEN, Jing ZHANG. Trajectory Optimization and Power Allocation for UAV Alternate Relay Communications[J]. Journal of Electronics & Information Technology, 2021, 43(12): 3554-3562. doi: 10.11999/JEIT200684
Citation: Guangchi ZHANG, Jiao CHEN, Miao CUI, Wei CHEN, Jing ZHANG. Trajectory Optimization and Power Allocation for UAV Alternate Relay Communications[J]. Journal of Electronics & Information Technology, 2021, 43(12): 3554-3562. doi: 10.11999/JEIT200684

无人机交替中继通信及其轨迹优化和功率分配研究

doi: 10.11999/JEIT200684
基金项目: 广东省科技计划(2017B090909006, 2018A050506015, 2019B010119001, 2020A050515010, 2020A0505100012),广东特支计划项目(2019TQ05X409)
详细信息
    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

    崔苗:女,1978年生,讲师,研究方向为新一代无线通信网络

    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

    通讯作者:

    崔苗 cuimiao@gdut.edu.cn

  • 1)本文主要考虑通过调整无人机的飞行轨迹改变信道的功率增益,最大化飞行全程的平均吞吐量性能。由于小尺度衰落主要刻画无人机在微小范围内移动(厘米级,由载波频率决定)造成的信道增益变化,无人机飞行全程的系统平均吞吐量并不主要由信道的小尺度衰落决定,而是主要由大尺度衰落决定。因此,为简单起见,这里没有考虑小尺度衰落,而仅考虑大尺度衰落。
  • 中图分类号: TN915

Trajectory Optimization and Power Allocation for UAV Alternate Relay Communications

Funds: The Science and Technology Plan Project of Guangdong Province (2017B090909006, 2018A050506015, 2019B010119001, 2020A050515010, 2020A0505100012), The Special Support Plan for High-Level Talents of Guangdong Province (2019TQ05X409)
  • 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。
  • 图  1  无人机交替中继通信系统

    图  2  信息传输时隙图

    图  3  问题求解示意图

    图  4  $T = 105\;{\rm{s}}$时无人机的飞行轨迹

    图  5  $ T=205\;{\rm{s}}$时无人机的飞行轨迹

    图  6  $ T=205\;{\rm{s}}$时联合优化方案的源端和无人机端的功率分配

    图  7  吞吐量随初始功率$P$的变化图

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出版历程
  • 收稿日期:  2020-08-05
  • 修回日期:  2021-04-05
  • 网络出版日期:  2021-06-10
  • 刊出日期:  2021-12-21

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