摘要
设计了一种基于FPGA的数字信号传输性能分析系统,实现对数字信号传输性能的分析。系统采用FPGA为数字信号发生模块和分析模块控制芯片,按键输入传送控制信号给FPGA,FPGA产生频率步进可调的m序列,并进行曼彻斯特编码,信号经过模拟传输信道后,再由信号分析模块FPGA通过快速同步检测算法对信号进行同步提取,在示波器上测得眼图眼幅度等信息,实现了数字信号传输性能测试的功能。该系统密闭封装,人机界面友好,非常便于操作演示。
A FPGA-based digital signal transmission performance analysis system has been designed to analyze digital signal transmission performance. It uses FPGA for digital signal control chip module and analysis module. Control signal is sent to the FPGA by keys, FPGA generates the m-sequence whose frequency can be adjusted step by step and Manchester encoding. Through the analog transmission channel, a fast synchronization detection arithmetic is used to extract synchronization signal by analysis module FPGA,the oscilloscope measures eye margin and other information, to achieve digital signal transmission performance testing capabilities. The system whose encapsulation is compact has friendly interface and it is very easy to operate and demonstrate.
出处
《电子测量技术》
2012年第8期78-81,共4页
Electronic Measurement Technology
关键词
FPGA
M序列
曼彻斯特编码
同步提取
FPGA
m-sequence
manchester encoding
extracting synchronization
