一种全数字化载波频偏估计器算法

本文提出一种适合ＱＡＭ调制信号的全数字经载波频偏观测器算法，它用于不再采用锁相环同步器的全数字接收机中直接测量频偏的大小，文中提出了频偏观测器算法，接着引入频偏的卡尔曼滤波算法，最终把频偏观测器与卡尔曼滤波器相结合构成了频偏估计器，为存在较大偏的移动通信信道中解决载波同步问题提供了一种实现方案。

An Algorithm to Estimate Frequency Deviation

This paper presents an algorithmto observe frequency deviation (FD) for QAM signal reception.It can be used in an all degital receiver where the synchronizer no longer employs any PLL.This paper first presents the algorithm of the FD observer,and then introduces 1st order FD Kalman filtering algorithm,at last combines the FD observer and thd FD Kalman filter to form an FD estimator,which provides a practical solution for carrier synchronization in mobile communication channel.