Exponentiated Weibull大气湍流下航空激光通信性能分析  

Performance of airborne optical communication over Exponentiated Weibull atmospheric turbulence

作　　者：赵静[1] 赵尚弘[1] 赵卫虎[2] 刘韵[1] 李轩[1] 

机构地区：[1]空军工程大学信息与导航学院 [2]西安通信学院

出　　处：《光电子．激光》2017年第9期957-964,共8页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61571461);陕西省自然科学基金(2015JM6360)资助项目

摘　　要：研究了Exponentiated Weibull(EW)大气湍流信道下航空激光通信的性能,综合考虑大气湍流及气动光学效应的影响,利用Meijer′s G函数推导出了航空激光通信链路的性能指标的闭合表达式,包括平均误码率(BER)、中断概率及平均信道容量。在不同的航空飞行条件下,根据平均BER、中断概率和平均容量闭合表达式分别给出了数值仿真实例,分析了航空飞行高度、传输距离、信噪比(SNR)与航空激光通信系统性能的关系,同时分析了孔径平均效应对航空激光通信链路性能改善作用。The analytical expressions for the performance of airborne optical com munication systems under the combined influence of atmospheric turbulence and aero-optic e ffects are presented in this paper.The atmospheric turbulence is modeled by the exponentia ted Weibull （EW） distribution.The closed-form expressions for average bit error rate （BER）,probability of fade and average channel capacity are derived based on a Meijer′s G function.These sys tem performances are evaluated under the influence of various flight altitudes and propagation di stances.The effects of aperture averaging on the system performance are studied as well.Our results demonstrate that the aperture averaging technique can significantly improve the system performanc e under turbulence and aero-optics effects.Furthermore,this work is helpful for the c ompensation technique of system performance on airborne optical communication sy stem.

关 键 词：航空激光通信 误码率(BER) 中断概率 平均信道容量 exponentiated Weibull(EW)分布 

分 类 号：TN929[电子电信—通信与信息系统]