摘要
随着无线通信的快速发展,分布式无人机群引发了国内外学者的广泛关注。针对一个分布式无人机群通信系统,分析无人机位置偏移产生的相位误差对系统传输性能的影响。首先,在假设无人机群存在随机相位误差的情况下,考虑目的节点采用等增益合并技术接收来自各个无人机的信号以使系统获得最优的性能。接着,假设无人机通信链路的小尺度衰落服从Nakagami-m分布,推导出系统的中断概率和遍历容量的闭合表达式。最后,利用计算机仿真验证理论分析的正确性,并定量分析无人机数、随机相位误差等关键参数对系统性能的影响,为实际分布式无人机群通信提供参考。
With the rapid development of wireless communication,distributed unmanned aerial vehicles(UAVs)have attracted many researchers all over the globe.The impact of phase error caused by UAV position deviations on the transmission performance of a distributed UAVs communication system is analyzed.Firstly,under the case when UAVs experience random phase error,the destination node is considered to employ equal gain combining(EGC)technique to receive signals from each UAV to harvest its optimal performance.Secondly,under the assumption that the small-scale fading of each UAV link follows Nakagami-m fading,the closed-form expressions of outage probability(OP)and ergodic capacity(EC)for system are derived.Finally,computer simulations are provided to validate the correctness of the theoretical analysis and the impact of key parameters such as the number of UAVs and random phase error on the system performance is analyzed,thus serving as a reference for enabling the practical distributed UAVs communication.
作者
戴叶玲
郭焱
冯一帆
韩略
DAI Yeling;GUO Yan;FENG Yifan;HAN Lüe(College of Telecommunications and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;Portland Institute,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)
出处
《电子信息对抗技术》
2024年第4期72-79,共8页
Electronic Information Warfare Technology
基金
复杂电子系统仿真实验室基础研究课题(614201003012206)
南京邮电大学引进人才科研启动基金(NY222114)
江苏省研究生科研与实践创新计划项目(KYCX24_1178,KYCX23_1018)。
关键词
分布式无人机群
随机相位误差
等增益合并
Nakagami-m
性能分析
distributed unmanned aerial vehicles(UAVs)
random phase error
equal gain combining(EGC)
Nakagami-m
performance analysis
