›› 2014, Vol. 27 ›› Issue (7): 30-.

• 论文 • 上一篇    下一篇

一种基于软件无线电的中频BPSK信号解调算法

胥嘉佳,许鸣   

  1. (南京模拟技术研究所 科研处,江苏 南京 210016)
  • 出版日期:2014-07-15 发布日期:2014-07-19
  • 作者简介:胥嘉佳(1981—),男,博士,工程师。研究方向:通信信号处理与通信系统设计。E-mail:pp_xx_bb@163.com

An Algorithm for IF BPSK Signal Demodulation Based on Software Radio Technology

XU Jiajia,XU Ming   

  1. (Department of Scientific Research,Nanjing Research Institute on Simulation Technique,Nanjing 210016,China)
  • Online:2014-07-15 Published:2014-07-19

摘要:

针对BPSK信号的特点,研究了一种基于软件无线电技术的中频BPSK信号解调算法。采用鉴相方式解调出基带码元,并通过不断调整相位判定门限的方法,实现了频率和相位同步功能,最后通过一个简单的卷积运算完成码元同步功能。该算法简单、实时性良好,可用于流水处理结构。与以往的解调方法相比,该算法以复信号运算和逻辑判断为主,适用于在FPGA器件上采用软件无线电技术实现。

关键词: BPSK信号, 解调, 软件无线电, FPGA

Abstract:

A demodulation algorithm for IF Bipolar Phase Shift Key (BPSK) signals based on software radio technology is proposed.Baseband elements are phase demodulated,frequency and phase synchronization is realized by repeated adjustments of phase threshold method,and finally symbol synchronization is fulfilled by a simple convolution operation.The algorithm is simple and real-time,and can be used in pipeline structure.Different from conventional methods,this algorithm consists mainly of arithmetic and logic judgments of complex signals.It is to realize the algorithm on FPGA device using software radio technology.

Key words: BPSK signal;demodulation;software radio technology;FPGA

中图分类号: 

  • TP212.9