METHOD OF ESTIMATING CHANNEL BY PROJECTION ON ORTHOGONAL FAMILIES OF PARTICULAR CONSTRUCTION AND CORRESPONDING RECEIVER

摘要

The invention relates to a method for estimating a transmission channel, implementing a reception of a multicarrier signal formed of a temporal succession of symbols, each comprising a cyclic prefix.According to the invention, it is determined an improved estimation of said transmission channel, by orthogonal projection of a first estimate, performed by analysis of received data, on a space generated by a subsampled family of orthogonal Vm vectors, obtained by linear combinations from a family of Wm vectors each associated with a possible delay of said channel, said delay belonging to a set of delays M chosen according to a predetermined criterion of relevance. / P