基于FPGA的多路数据单信道传输方法研究

Research on Method for Single Channel Transmitting Multi-channel Data Based on FPGA

为了解决图像数据远距离快速传输的问题,以光纤作为传输媒介,对基于FPGA平台的图像数据传输方法进行了研究;对图像数据的特点及远距离传输面临的问题进行了分析;设计了运行在FPGA上的多路图像数据时分复用系统;从算法设计的角度展开,对系统的整个运行框架、时分复用模块工作原理、优缺点进行了分析,提出了一种结合优先级的时间轮片通道复用方式,重点对通道复用模块核心算法进行了介绍,详述了编码单元、发送请求模块的设计方法及特点;最后,在仿真环境下,对整个算法进行了验证,实验仿真分析表明数据得到有效传输,实验结果证明多路数据单信道传输方法有效合理。

In order to solve the problem of fast and long-distance transmission for image data,using optical fiber as medium,optimization for the method of image transmission based on the FPGA was studied.Characteristic and the long-distance transmission difficulties of image data were also analysed.We designed a time-division multiplexing （TDM） transmission system running on the FPGA.To begin with algorithm design,this paper analyses the advantages and disadvantages of the operating framework and operating principles of reused-module.Meanwhile,a reused-module based on the time-slice was proposed.This paper introduces the core algorithms of reused-module,details the coding unit and the design method and characteristics of the transmission requiring module.Finally,the effectiveness of the image transmitting method was verified by the experiment,and the results demonstrate that the method for single channel transmitting multi-channel data is efficient and reliable.