一种非数据辅助的MPSK载波频偏估计算法

A Non-Data-Aided Carrier Frequency Offset Estimator for MPSK Signal

本文针对MPSK信号,提出了一种基于最大似然的非数据辅助的载波频偏估计算法,本算法采用一种新的相位展开和迭代的方法,通过选取最佳的迭代权系数,使得本算法具有高精度、宽估计的特点。同时,在同等估计性能的情况下,本算法的复杂度远远低于文献中的算法。

Aiming at the MPSK, this paper proposes a non-data-aided carrier frequency offset estimator, which is based on the maxi- mum likelihood （ML） principle. This algorithm adopts a new phase unwrapping and iterative means to ensure that it have the highest accuracy and extensive estimation. In addition, under the same evaluating efficiency, the complication of this method is far lower than the one in the reference.