Method and device to estimate the channel transfer function for a COFDM demodulator

摘要

The method involves determining linear combination coefficients in an iterative manner, where a new value of one of the coefficients is equal to a sum of last determined value of the coefficient and a term comprising a product of an iteration pace and an error term. The error term is equal to the difference of predetermined estimations for a given carrier of the symbol. The iteration pace is determined in an iterative manner. The estimation is equal to a ratio between a received coefficient associated to the carrier and a predetermined theoretical coefficient. An independent claim is also included for a coded orthogonal frequency division multiplex (COFDM) demodulator that receives successive symbols of a signal received from a transmission channel.