1. A method for determining parameters for configuring a regularized zero-forcing precoder T applied to a plurality of n transmitters for transmitting data from the plurality of n transmitters to a plurality of K receivers via a Multiple-Input Multiple Output MIMO transmission channel in a wireless communication system, each transmitter having a quantity MTX of transmit antennas, each receiver having a single receive antenna, K?nMTX=M, characterized in that the method comprises a first phase comprising:obtaining long-term statistics about observations of the MIMO transmission channel as follows, for any and all j-th transmitter among the n transmitters and any and all k-th receiver among the K receivers:

?k(j), which is representative of a ratio between an average power of the MIMO channel from said j-th transmitter to said k-th receiver and an average power of an estimation noise in Channel State Information at Transmitter CSIT obtained, at said j-th transmitter, when estimating the MIMO channel from said j-th transmitter to said k-th receiver;

?k, which is a covariance matrix of the MIMO channel from said plurality of n transmitters toward said k-th receiver; and

?k(j,j?), which is representative of a correlation between qk(j) and qk(j?), wherein qk(j) is a whitened estimation noise, obtained at the j-th transmitter, in the CSIT of the MIMO channel between said j-th transmitter and said k-th receiver, and wherein qk(j?) is a whitened estimation noise, obtained at the j?-th transmitter, in the CSIT of the MIMO channel between said j?-th transmitter and said k-th receiver;

obtaining a power scaling factors vector ?* gathering power scaling factors ?j for any and all j-th transmitter among the n transmitters and meeting a power constraint P, by solving an optimization problem as a function of a signal to noise ratio asymptotic expression SINRko from a standpoint of each receiver as follows:

wherein Ej?MTX×M is a matrix defined as follows:

Ej=[0MTX×(j-1)MTX,IMTX,0MTX×(n-j)MTX]

wherein the notation IZ means an identity matrix or sub-matrix of size Z and the notation OZ×W means a null sub-matrix of size Z×W,

wherein the asymptotic expression SINRko of the signal to noise ratio from a standpoint of any k-th receiver among the K receivers is as follows:

wherein Iko is as follows:

wherein ?j,j?o is a function defined as follows:

wherein ?j is a regularization coefficient of the regularized zero-forcing precoder T,

wherein ?j,j?,k (with k=1, . . . , K) is a k-th entry of the vector ?j,j??K×1 such that:

(I?A?j,j?)?=b?j,j?

wherein A?j,j??K×K is a matrix having an entry at each index l, t equal to:

wherein b?j,j? is a vector having an entry at each index l equal to

and wherein ?j,k is defined as follows:

and in that the method further comprises a second phase, performed independently by any and all j-th transmitter of said plurality of n transmitters, comprising:

obtaining an estimation ?(j) of the MIMO transmission channel from a standpoint of each j-th transmitter of said plurality of n transmitters;

configuring the regularized zero-forcing precoder T as follows:

wherein Tj(j) represents the parameters of the regularized zero-forcing precoder T which are applied by said j-th transmitter,

and wherein ?(j) is a power normalization scalar defined as follows:

?(j)=?((?(j))?(j)+M?jIM)?1(?(j))?F2

wherein ?j results from execution of the first phase.