• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

计算机工程与科学 ›› 2022, Vol. 44 ›› Issue (06): 1023-1029.

• 计算机网络与信息安全 • 上一篇    下一篇

基于FD-NOMA的无人机通信系统容量分析

牛春雨1,贾向东1,2,曹胜男1,万妮妮1   

  1. (1.西北师范大学计算机科学与工程学院,甘肃 兰州 730070;
    2.南京邮电大学江苏省无线通信重点实验室,江苏 南京 210003)

  • 收稿日期:2021-04-08 修回日期:2021-10-10 接受日期:2022-06-25 出版日期:2022-06-25 发布日期:2022-06-17
  • 基金资助:
    国家自然科学基金(61261039,61561043);甘肃省教育厅优秀研究生“创新之星”项目(2021CXZX-268)

Capacity analysis of UAV communication system based on FD-NOMA

NIU Chun-yu1,JIA Xiang-dong 1,2,CAO Sheng-nan1,WAN Ni-ni1   

  1. (1.College of Computer Science and Engineering,Northwest Normal University,Lanzhou 730070;
    2.Wireless Communication Key Lab of Jiangsu Province,
    Nanjing University of Posts and Telecommunications,Nanjing 210003,China)
  • Received:2021-04-08 Revised:2021-10-10 Accepted:2022-06-25 Online:2022-06-25 Published:2022-06-17

摘要: 为了提高无人机与地面用户的通信质量,提出了一种基于全双工和非正交多址接入技术的无人机通信系统模型,并分析了城市和郊区两种场景下该系统模型的遍历容量。首先,推导出两种场景下该系统模型的精确容量表达式;然后,通过引入Q函数和利用截断方法解决了式中指数积分函数的计算问题,得到了容量的近似闭式表达式,并在城市场景下,采用取系数因子的方法得到了更精确的容量近似闭式表达式;最后,仿真和数值结果表明,莱斯因子对系统容量存在一定影响,增加无人机数量或非正交多址接入功率向量都可以获得更好的容量性能。

关键词: 无人机通信, 全双工, 非正交多址接入, 容量分析

Abstract: In order to improve the communication quality between unmanned aerial vehicle (UAV) and ground users, an UAV communication system model based on full-duplex and non-orthogonal multiple access (FD-NOMA) technology is proposed, and the capacity of the system model in urban and suburban scenarios are analyzed. Firstly, the accurate capacity expression of the system model is given. Secondly, the calculation problem of the exponential integral function in the formula is solved by introducing the Q function and the truncation method, and the approximate closed-form expression of the capacity is obtained. Thirdly, in urban scenarios, the coefficient factor is used to obtain a more accurate approximate closed-form expression. Finally, simulation and numerical results show that rice factor has a certain influence on the system capacity, and increasing the number of UAV or NOMA power vector can achieve better capacity performance.

Key words: UAV communication, full-duplex(FD), non-orthogonal multiple access(NOMA), capacity analysis ,