System for estimating the transfer function of a channel for the variable transmission of a multicarrier signal, is performed using a frequency digital signal which corresponds to the signal received

摘要

The method comprises a step (6) involving the calculation of the value of a first estimated transfer function (C1) of the transmission channel. The value of the autocorrelation function (R(C1)) of the aforementioned first estimated transfer function (C1) is calculated, thereby enabling the separation of the noise component There is a step (10) in which a noise reduction filter (F) is determined from the autocorrelation function (R(C1)), and a step (12) whereby the noise reduction filter (F) is applied to the first estimated transfer function (C1) in order to deliver a second estimated, noise-corrected transfer function (C2) of the transmission channel.