一种新的OFDM载波频偏盲估计方法

A New Blind Method for CFO Estimation Via Oversamping for OFDM Systems

通过研究连续时间OFDM信号的相位特性,采用了一种新的过采样CFO盲估计算法。这种方法利用由CFO产生的共同相偏来获得高性能频偏估计,具有高带宽和数据利用率的特点。无论在有噪声还是无噪声的情况下,都有良好的性能。仿真表明这种新方法比许多现存的盲估计算法性能更好。

By investigating the properties of the phase information embedded in the continuous time OFDM signal,we propose a blind deterministic algorithm for the extimation of the OFDM frequency offset via overasmpling.It uses the intrinsic phase shift of neighboring sample points incurred by the frequency offset that is common among all subcarriers and it is bandwidth/power efficient and data efficient.Whether is noise or not,the method has excellent performance.This new scheme proves to be superior to most existing...