摘要
为了有效提升光通信系统信道传输效率,提出时变环境下的自由空间光通信系统信道建模研究。该方法基于通信时变环境,对光通信系统信号传播时的大气散射以及大气衰减特性分析。将大气散射系数以及大气衰减系数作为约束条件,结合光通信系统信道特性,获取光通信系统光源与接收器之间的距离,并计算系统接收端信号功率。通过上述约束条件以及距离、功率等参数建立信道冲击响应函数,实现自由空间光通信系统的信道传输模型的建立。实验结果表明,该方法模型与实际信道拟合效果好、信道模型效率最高达0.9以上,该方法的信道模型性能较高。
In order to effectively improve the channel transmission efficiency of optical communication systems,a research on channel modeling of free space optical communication systems in time-varying environments is proposed.This method is based on the analysis of atmospheric scattering and attenuation characteristics during signal propagation in optical communication systems in a time-varying communication environment.Using the atmospheric scattering coefficient and atmospheric attenuation coefficient as constraints,combined with the channel characteristics of the optical communication system,obtain the distance between the light source and receiver of the optical communication system,and calculate the signal power at the receiving end of the system.Establish a channel impulse response function based on the above constraints and parameters such as distance and power,and establish a channel transmission model for free space optical communication systems.The experimental results show that the method has a good fitting effect with the actual channel,and the channel model efficiency is as high as 0.9 or above.The channel model performance of this method is relatively high.
作者
鞠佳田
解志斌
李士俊
JU Jiatian;XIE Zhibin;LI Shijun(Jiangsu University of Science and Technology,Zhenjiang Jiangsu 212008,China;Harbin University of science and Technology,Harbin 150000,China)
出处
《激光杂志》
CAS
北大核心
2024年第10期152-157,共6页
Laser Journal
基金
国家自然科学基金资助项目(No.61871203)。
关键词
时变环境
自由空间
光通信系统
信道建模方法
信号接收功率计算
time-varying environment
free space
optical communication system
channel modeling methods
signal receiving power calculation