计算机应用与软件Issue(5)：79-82,4.DOI:10.3969/j.issn.1000-386x.2014.05.020
一种高阶Q AM信号多普勒频率参数估计算法
A DOPPLER PARAMETERS ESTIMATION ALGORITHM FOR HIGH-ORDER QAM SIGNALS
摘要
Abstract
To solve the problem of dynamic Doppler parameters estimation in the carrier synchronisation of high-order QAM signals,we propose a method which is based on phase polynomial coefficients estimation of frequency modulation signals.The method constructs a quadratic phase (QP)function for the expression of QAM signals which have been wiped off the modulation information,and obtains the estimated value of Doppler frequency variation rate through the estimation of the quadratic term coefficient.In the next step,the algorithm gets the estimated Doppler frequency value by estimating the linear term coefficient of phase in compliance with the ML rule.Finally,the phase is obtained with principal value taken approach.Computer simulation experiments indicate that the proposed algorithm can be effectively applied in dynamic Doppler parameters estimation for high-order QAM signals.关键词
高阶QAM信号/多普勒频率变化率/二次相位函数/多项式相位系数Key words
High-order QAM signals/Doppler frequency variation rate/Quadratic phase function/Polynomial phase coefficients分类
信息技术与安全科学引用本文复制引用
吴天琳,彭华,黄艳艳..一种高阶Q AM信号多普勒频率参数估计算法[J].计算机应用与软件,2014,(5):79-82,4.基金项目
河南省自然科学基金项目（0611051400）。 （）
