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基于MPSK信号频偏估计的非线性滤波算法

李晶1,2;朱江1;张尔扬1;沈荣骏3   

  1. (1. 国防科技大学 电子科学与工程学院, 湖南 长沙 410073;
    2. 西安卫星测控中心, 陕西 西安 710043;
    3. 中国人民解放军总装备部科技委, 北京 100080)

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-06-20 发布日期:2004-06-20

A nonlinear filtering algorithm and achievement based on frequency estimation of MPSK modulated signals

LI Jing1,2;ZHU Jiang1;ZHANG Er-yang1;SHEN Rong-jun3

  

  1. (1. School of Electronic Science and Eng., N.U.D.T., Changsha 410073, China;
    2. Xi'an Satellite Control Centre, Xi'an 710043, China;
    3. General Equipment Dept. of PLA, Beijing 100080, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2004-06-20 Published:2004-06-20

摘要: 基于MPSK信号的非线性频偏估计算法,通过对叠加了高斯分布白噪声接收信号的非线性变换分析,将非线性滤波(中值滤波)算法应用于载波频率估计之中.运用Monte Carlo仿真手段对其进行了验证,结果表明,在非线性频率估计中运用中值滤波算法后,其估计的均方误差较之运用均值滤波算法有很大的改善.

关键词: 非线性滤波算法, 载波估计, MPSK调制信号

Abstract: Based on the nonlinear frequency algorithm, the nonlinear transform of white Gaussian noise, which is added to the received signals are analyzed. And the idea of applying nonlinear filtering(the median filtering) algorithm to nonlinear frequency estimation is proposed. At the same time, Monte Carlo simulation is used to validate the idea. The results show that the Mean Square Error(MES) of frequency estimation using a median filter is better than that by using a mean value filter.

Key words: nonlinear filtering algorithm, carrier estimation, MPSK modulated signal

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  • TN911
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