自由空间光通信网络拓扑自适应控制方法研究  

Research on topology adaptive control method of free space optical communication network

作　　者：王欣[1] 史春燕[1] 董建明[1] WANG Xin;SHI Chunyan;DONG Jianming(Zhangjiakou University,Zhangjiakou Hebei 075000,China)

机构地区：[1]张家口学院,河北张家口075000

出　　处：《激光杂志》2023年第5期149-153,共5页Laser Journal

基　　金：河北省科技厅项目(No.21555701D)。

摘　　要：自由空间光通信网络拓扑优化控制可以降低网络传输延迟,提高通信速率,提出基于平均辐射光功率调节的自由空间光通信网络拓扑自适应控制方法。构建自由空间光通信网络的光传输和信道模型,结合光学度量的方法分析光通信网络的辐射功率、辐射通量以及光通量参数,采用光谱光视度量的方法,进行自由空间光通信网络脉冲幅度调制,采用强度调制和直接检测的方法,实现自由空间光通信的平均辐射光功率调节。根据反馈调节和前置补偿的方法,构建等效自由空间光通信网络拓扑结构模型,实现光通信网络的信道均衡控制和视距链路自适应增益调节。测试表明,该方法提高了信道增益,安全传输速率较高。The topology optimization control of free space optical communication network can reduce the network transmission delay and improve the communication rate.An adaptive control method of free space optical communica-tion network topology based on the adjustment of average radiated optical power is proposed.The optical transmission and channel model of free space optical communication network are constructed.Combined with the optical measure-ment method,the radiation power,radiation flux and luminous flux parameters of optical communication network are analyzed.The spectral optical measurement method is used to modulate the pulse amplitude of free space optical com-munication network,and the average radiation power of free space optical communication is adjusted by intensity mod-ulation and direct detection.According to the methods of feedback adjustment and pre compensation,the equivalent free space optical communication network topology model is constructed to realize the channel equalization control and line of sight link adaptive gain adjustment of optical communication network.The test shows that this method improves the channel gain and the safe transmission rate is high.

关 键 词：自由空间光通信 网络拓扑 自适应控制 信道增益 

分 类 号：TN919[电子电信—通信与信息系统]