移动通信系统中一种基于对数包络的多普勒频移估计方法

Novel Doppler Shift Estimation Based on Logarithmic Envelope Algorithm in Mobile Communication Systems

文章提出了一种基于对数包络算法的多普勒频移估计器。该算法利用接收导频信号的对数包络自相关来获得移动通信系统中最大多普勒频移,并通过计算机仿真对该算法进行评估。仿真结果表明算法在很宽的多普勒频率范围内均具有优异的性能,且实现简单。

In this paper, a LE （logarithmic envelope） algorithm is proposed to estimate the maximum Doppler frequency in mobile communication systems. The algorithm uses LE autocorrelation of received pilot signals, which is strongly related with the maximum Doppler frequency in a fading environment. The computer simulation is utilized to evaluate the proposed algorithm, and the results show that the proposed algorithm is very simple and of good performance over wide Doppler frequency range.