一种基于FFT的抛物线内插位定时估算方法

摘要

针对基于数据辅助的开环前馈的载波同步问题，本文分析了常用的位定时估计算法，并在此基础上为了适应短促突发快速位定时的要求，提出了一种基于FFT的抛物线内插的位定时估算方法，仿真表明达到了很好的估计精度和性能。%Aiming at the solution of carrier synchronization problem based on data supplementary open loop feed forward, some bit timing estimation algorithms are analyzed in this paper. On this basis, a parabolic interpolation bit timing estimation method based on fast Fourier transform (FFT) is proposed to meet the requirement of short burst quick bit timing. Simulation results validate the estimation accuracy and performance of this method.