›› 2012, Vol. 25 ›› Issue (8): 32-.

• 论文 • 上一篇    下一篇

基于FPGA的数字信号传输性能分析仪

孙盼,姚佳毅,林阅斌   

  1. (山东大学 信息科学与工程学院,山东 济南 250000)
  • 出版日期:2012-08-15 发布日期:2012-08-28
  • 作者简介:孙盼(1992—),男,本科。研究方向:通信技术。

Analyzer of Transmission Performance for Digital Signals Based on FPGA

 SUN Pan, YAO Jia-Yi, LIN Yue-Bin   

  1. (School of Information Science and Engineering,Shandong University,Jinan 250000,China)
  • Online:2012-08-15 Published:2012-08-28

摘要:

文中分析的FPGA系统以数字电路为核心,由数字信号发生器、低通滤波器、加法器、伪随机信号发生器、数字信号分析电路组成。并通过对系统方案的对比,以及电路、软件的分析与设计,针对数据率误差、伪随机码误差、眼图和眼幅度均进行了实测,检测结果显示误差值均在允许范围内。

关键词: 曼彻斯特码, 数字锁相环, 同步信号, 眼图

Abstract:

The FPGA system analyzed in this paper has the digital circuit as its core.It is composed of the digital signal generator,low pass filter,adder,pseudo random signal generator and digital signal analysis circuit.The system scheme is compared and the circuit and software are analyzed and designed.To reduce the data rate error and pseudo random code error,eye and eye amplitude were measured.Test results show that error values are within the allowable range.

Key words: manchester code;digital phase-locked loop;synchronized clock signal;eye diagram

中图分类号: 

  • TN919.6+4