Patent ID: 8995576
Filing Date: 2015-03-31
Classification: H04L

Abstract:
1. A method of estimating a frequency bias negatively affecting a digital signal representative of a frame of symbols transmitted by a terminal to a station of a digital telecommunication system, said frequency bias corresponding to a difference between a supposed central frequency of a frequency spectrum of the digital signal and a real central frequency of said frequency spectrum, characterized in that it comprises the steps of: generating the digital signal by sampling of an analog signal, representative of the frame of symbols, with a sampling period Te shorter than a predefined duration of each of the frame symbols, such that the digital signal comprises at least three samples per symbol, estimating the frequency bias negatively affecting the digital signal according to values calculated for Np pairs of samples selected so that several of said Np pairs necessarily belong to a same symbol of the frame, each value being representative of a phase difference between the samples of the considered pair of samples, the samples of each of the Np pairs being separated by a same non-zero number D of sampling periods.