Patent ID: 8842754

Claim:
A process for estimating a channel in an OFDM communication system, wherein an OFDM sample is based on a time-frequency grid comprising a set of pilots, the process comprising the steps of: receiving, by a receiver, OFDM sample based subframes comprising a set of pilot signals; performing an iterative loop for the purpose of computing (M k , k k ) respectively corresponding to the covariance matrix and the mean of the probability distribution of p(h k |y k , l k ) at time instant k, y k , and l k respectively corresponding to the received signal and to a priori known information and h k being a true channel at time instant k; and said value of (M k , k k ) being computed as a function of (M k−1 , k k−1 ) as well as the values of the pilots received at instant k.