Patent ID: 7471728

Claim:
A method of tracking a transmission channel on the basis of a multicarrier, comprising the following steps: a) estimating the channel on the basis of the pilot symbols, to produce estimated channel values that are estimated for at least certain of the symbols of a frame which correspond to the pilot symbols; b) performing first interpolations, on the basis of said estimated channel values, according to all directions parallel to a first specific direction and passing through at least two different pilot symbols for which there exists an estimated channel value to produce first interpolated values of the channel for the symbols of the frame in all these directions; c) performing second interpolations, on the basis of said first interpolated values, in all directions parallel to a second specific direction and passing through at least two symbols for which there exists a first interpolated value, to produce second interpolated values of the channel for substantially the entirety of the symbols of the frame; d) assigning, to each frame symbol for which there exists no second interpolated value of the channel, respectively, the interpolated value of the channel for the frame symbol which is the closest thereto and for which there exists a second interpolated value of the channel, wherein the step of estimating the channel is carried out by joint estimation on the basis of the pilot symbols in blocks of pilot symbols, a block of pilot symbols being a group of non-contiguous pilot symbols with a maximum temporal spacing less than a tenth of the inverse of the fading frequency through the transmission channel and with a maximum frequency spacing less than a tenth of the inverse of the maximum delay between the multipaths through the propagation channel.