基于GPC算法的远距离多信道光纤通信网络时延控制方法

Delay control method for long-distance multi-channel optical fiber communication network based on GPC algorithm

针对远距离多信道光纤通信网络进行光纤数据传时输产生的时延问题,深入研究远距离多信道光纤通信网络的时延控制方法,分析光纤热膨胀、光纤折射率和光纤色散系数等因素对光纤通信网络时延的影响,传感器收集到的光纤数据经光纤通信网络传输到控制器后,控制器采用时间驱动方法执行GPC控制算法,同时设置缓冲区解决网络数据传输时序错乱,将采用GPC算法实施超前预测控制后的光纤信号数据序列发送到执行器,执行器采用缓冲区算法控制光纤色散、光谱宽度和光纤折射率,控制光纤通信网络时延。实验结果表明,本文方法控制下网络传输过程中数据的丢包率和误码率均为0,且传输数据的利用率为100%,均优于传统方法,说明该方法可以提高光纤通信网络数据可利用率和通信能力,是一种有效的时延控制方法。

Aiming at the problem of time delay caused by optical fiber data transmission in long-distance multichannel optical fiber communication network,the time delay control method of long-distance multi-channel optical fiber communication network is deeply studied.The influence of factors such as thermal expansion of optical fiber,refractive index of optical fiber and dispersion coefficient of optical fiber on the time delay of optical fiber communication network are analyzed.The optical fiber data collected by sensors are transmitted to the controller through optical fiber communication network.The controller uses time-driven method to implement GPC control algorithm,and the buffer is set to solve the disorder of network data transmission.The data sequence of optical fiber signal after GPC algorithm is sent to the actuator.The actuator uses buffer algorithm to control the dispersion,spectral width and refractive index of optical fiber,and to control the delay of optical fiber communication network.The experimental results show that the data loss rate and bit error rate are both 0 and the data utilization rate is 100%under the control of this method,which is superior to the traditional method.It shows that this method can improve the data availability and communication ability of optical fiber communication network,and it is an effective delay control method.