Patent ID: 7489748

Claim:
A method for the reception of a data signal which, before being sent, has undergone a linear precoding by means of a unitary precoding matrix, and a channel coding, wherein the method comprises: at least one iteration to improve an estimation of the received data signal, as a function of said received data signal and of a preceding estimation of said received data signal, said iteration comprising the following steps: an estimation of an interference, due at least to said linear precoding and affecting said received data signal, as a function of said preceding estimation so as to obtain an estimated interference, wherein said interference estimation step implements a multiplication of said preceding estimation by an interference matrix, wherein the interference matrix takes account of at least a matrix that is the conjugate transpose of a matrix representing the transmission channel of said received data signal and a matrix that is the conjugate transpose of said precoding matrix; a subtraction of said estimated interference from a preliminarily filtered and inverse precoded received data signal, so as to obtain an improved signal; an equalization of said improved signal, delivering an equalized received data signal; and an estimation of the data signal.