无人机协助无线通信系统的链路仿真分析

Simulation Analysis of UAV-assisted Wireless Communication System

将无人机作为移动转发节点是协助无线通信系统的重要技术。为此,针对由基站、无人机和用户组成的两跳转发的协助通信系统,分析了基于无人机协助的半双工、全双工模式下的协助通信系统的性能。先推导了系统的中断概率和吞吐量的闭合表达式。再分析了环路自干扰对基于全双工模式下中断概率的性能。性能分析表明,采用选择合并技术可降低链路的中断概率。此外,若在无人机端采用干扰消除技术,可有效地降低中断概率。

The deployment of unmanned aerial vehicles(UAVs) as a mobile relay is an emerging technique in cooperative wireless communication system.In this paper,we analyze the performance of UAV assisted full,half duplex cooperative communication in a dual hop relaying scenario,which consists of a base station,UAV as relay and a user.We derived the closed form expressions for outage probability,throughput.Then,we also presented the impact of loop back self-interference on system performance in FD systems.Performance analysis shows that,outage probability is reduced by using the selective merging technique.In addition,if we employ interference cancellation at the UAV,the outage probability is reduced.