UAV-Assisted FSO Communication System with Amplify-and-Forward Protocol under AOA Fluctuations:A Performance Analysis  

作　　者：Maozhe Xu Guanjun Xu Youran Dong Weizhi Wang Qinyu Zhang Zhaohui Song 

机构地区：[1]Shanghai Key Laboratory of Multidimensional Information Processing,East China Normal University,Shanghai 200241,China [2]State Key Laboratory of Integrated Services Networks,Xidian University,Xi’an 710126,China [3]Space Information Research Institute,Hangzhou Dianzi University,Hangzhou,310018,China [4]Peng Cheng Laboratory,Shenzhen 518052,China [5]Communication Engineering Research Center,Harbin Institute of Technology,Shenzhen 518055,China

出　　处：《China Communications》2023年第11期111-130,共20页中国通信（英文版）

摘　　要：Free space optical(FSO)communication has recently aroused great interest in academia due to its unique features,such as large transmission band,high data rates,and strong anti-electromagnetic interference.With the aim of evaluating the performance of an FSO communication system and extending the line-of-sight transmission distance,we propose an unmanned aerial vehicle(UAV)-assisted dual-hop FSO communication system equipped with amplifyand-forward protocol at the relay node.Specifically,we consider impairments of atmospheric absorption,pointing errors,atmospheric turbulence,and link interruptions due to angle-of-arrival fluctuations in the relay system.The Gamma-Gamma and Malaga distributions are used to model the influence of atmospheric turbulence on the source-to-UAV and UAVto-destination links,respectively.We derive closedform expressions of the probability density function(PDF)and cumulative distribution function(CDF)for the proposed communication system,in terms of the Meijer-G function.Based on the precise PDF and CDF,analytical expressions for the outage probability,average bit error rate,and ergodic capacity are proposed with the aid of the extended generalized bivariate Fox’s H function.Finally,we show that there is a match between the analytical results and numerical results,and we analyze the influence of the system and channel parameters on the performance.

关 键 词：amplify-and-forward protocol angle-ofarrival fluctuations FSO communication Malaga distribution UAV relay 

分 类 号：TN929.1[电子电信—通信与信息系统]