• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical Communication >Path-optimization method for UAV-aided relay broadcast communication system
【24h】

Path-optimization method for UAV-aided relay broadcast communication system

机译：无人机辅助中继广播通信系统的路径优化方法

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Unmanned aerial vehicle (UAV) relay technology is an important means of long-distance wireless communication. In this paper, we address a broadcast communication system using a fixed-wing UAV as a relay platform between a base station (BS) and a cluster of mobile-task UAVs. To improve the system performance, especially to ensure the quality of service (QoS) of high-priority task UAVs, the path-optimization method for the relay UAV is investigated.We first present the system and signal model of the UAV-aided relay broadcast communication system and derive the approximate expression of the ergodic capacity of the single link. Then, considering the different demands of the task UAVs, we propose a relay UAV path-optimization method based on the criterion of maximizing the weighted sum-ergodic capacity of each link. After that, the mathematical expressions of accurate outage probability and closed-form ergodic capacity of the relay links are derived to quantify the system performance. Finally, we give the optimal path of the relay UAV in two simulation scenarios and provide the effects of the task UAVs' priority and maximal heading angle of relay UAV on optimal path of relay UAV and communication performance of links using the proposed method. The computer simulation results demonstrate the validity of the proposed method and the performance analysis expressions. Our work can provide a useful reference for UAV relay broadcast communication system design. (C) 2018 Elsevier B.V. All rights reserved.
机译：无人机（UAV）中继技术是远程无线通信的重要手段。在本文中，我们解决了一种广播通信系统，该系统使用固定翼无人机作为基站（BS）与一组移动任务无人机之间的中继平台。为了提高系统性能，特别是确保高优先级任务无人机的服务质量，研究了中继无人机的路径优化方法。首先，介绍了无人机辅助广播的系统和信号模型。通信系统并推导单链路的遍历容量的近似表达式。然后，考虑到任务无人机的不同需求，提出了一种基于最大化各链路加权和遍历能力的准则的中继无人机路径优化方法。然后，得出精确的中断概率和中继链路的闭合形式遍历容量的数学表达式，以量化系统性能。最后，在两种仿真场景下给出了中继无人机的最优路径，并提出了任务无人机的优先级和中继无人机的最大航向角对中继无人机最优路径和链路通信性能的影响。计算机仿真结果证明了该方法的有效性和性能分析表达式。我们的工作可以为无人机中继广播通信系统设计提供有用的参考。 （C）2018 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号