航空学报 > 2013, Vol. 34 Issue (1): 130-140   doi: 10.7527/S1000-6893.2013.0016

流体力学、飞行力学与发动机

非对称衰落信道下无人机中继传输方案及性能分析

欧阳键1, 庄毅1, 薛羽1, 王洲2   

  1. 1. 南京航空航天大学 计算机科学与技术学院, 江苏 南京 210016;
    2. 中航工业 洛阳电光设备研究所, 河南 洛阳 471009
  • 收稿日期:2012-01-17 修回日期:2012-02-01 出版日期:2013-01-25 发布日期:2013-01-19
  • 通讯作者: 庄毅,Tel.:025-84896779,E-mail:zhuangyi@nuaa.edu.cn E-mail:zhuangyi@nuaa.edu.cn
  • 作者简介:欧阳键,男,博士研究生。主要研究方向:分布计算、协同传输技术。,E-mail:ouyangjian@nuaa.edu.cn;庄毅,女,教授,博士生导师。主要研究方向:分布计算。Tel:025-84896779,E-mail:zhuangyi@nuaa.edu.cn;薛羽,男,博士研究生。主要研究方向:分布计算、电子对抗。,E-mail:xueyu_123@nuaa.edu.cn;王洲,男,硕士,工程师。主要研究方向:军用航电火控系统仿真技术。,E-mail:hi.wz@tom.com
  • 基金资助:

    航空科学基金(2010ZC13012);江苏省普通高校研究生科研创新计划(CXLX11_0202);中央高校基本科研业务费专项资金

UAV Relay Transmission Scheme and Its Performance Analysis over Asymmetric Fading Channels

OUYANG Jian1, ZHUANG Yi1, XUE Yu1, WANG Zhou2   

  1. 1. College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    2. Luoyang Institute of Electro-Optical Equipment, AVIC, Luoyang 471009, China
  • Received:2012-01-17 Revised:2012-02-01 Online:2013-01-25 Published:2013-01-19
  • Supported by:

    Aeronautical Science Foundation of China (2010ZC13012); Funding of Jiangsu Innovation Program for Graduate Education (CXLX11_0202); Fundmental Research Funds for the Central Universities

摘要:

无人机(UAV)作为中继传输平台受到了国内外研究人员的广泛关注。本文研究了非对称衰落信道下的无人机中继传输系统,提出了输出信噪比最大化准则下的波束形成(BF)优化方案,并推导出系统中断概率、遍历容量和平均误符号率等无线通信系统主要性能指标的理论表达式。通过计算机仿真验证了本文提出的中继传输方案及性能分析的正确性,并定量分析了天线数量、信道参数以及功率分配对系统性能的影响,为无人机中继传输系统的设计及性能评估提供了参考和依据。

关键词: 无人机, 中继传输, 性能分析, 波束形成, 非对称衰落信道

Abstract:

The application of unmanned aerial vehicles (UAVs) in relay transmission systems has received more and more attention recently. This paper presents a study of a UAV relay transmission system over asymmetric fading channels. Using the maximization of the output signal-to-noise ratio as the design criterion, the optimal beamforming (BF) for the relay system is first obtained. Then, the new accurate expressions for the outage probability, ergodic capacity and average symbol error rate are all derived. Finally, computer simulations demonstrate the validity of the proposed relay transmission scheme and its performance analysis, and provide a quantitative study of the effect of antenna number, channel parameters and power allocation on system performance. Our work can provide some useful reference and foundation work to the system engineer for the purpose of designing a UAV relay transmission system and evaluating its performance.

Key words: unmanned aerial vehicles, relay transmission, performance analysis, beamforming, asymmetric fading channel

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