METHOD FOR ESTIMATING THE PHASE AND THE GAIN OF OBSERVATION DATA TRANSMITTED OVER A QAM-MODULATED TRANSMISSION CHANNEL

摘要

The invention concerns a method for estimating the gain and/or the phase of observation data (yk) transmitted in QAM modulation. The method consists in (A) iteratively estimating the phase and/or gain parameters based on a specific phase and/or gain law and (B) executing an adaptive procedure for estimating the phase and/or gain parameters, said adaptive procedure including at least one function for estimating said parameters based on the value of likelihood probability, expressed in terms of log-likelihood, of each observation data (yk) with respect to the set of bits constituting the symbols of the QAM modulation. The invention is applicable to single-carrier or multicarrier digital transmissions.