Method for pre-equalizing a data signal transmitted using frequency-division duplexing, FDD, by a source communicating entity, having a set of source antennas (A1 1,... A1 M1), to a destination communicating entity having a set of destination antennas (A2 1,... A2 M2), characterized in that it includes steps of: • reception, by a reference antenna (A1 ref) of the set of source antennas, of a first pilot sequence transmitted by a destination antenna (A2 j) through a first propagation channel on a carrier frequency, f2, of the frequency band dedicated to the transmissions from the destination communicating entity to the source communicating entity, and of estimating a first impulse response representative of said first propagation channel, • reception, by the destination antenna, of a second pilot sequence transmitted by a source antenna (A1 i) through a second propagation channel between said source antenna and the destination antenna on a carrier frequency, f1, of the frequency band dedicated to the transmissions from the source communicating entity to the destination communicating entity, and of estimating a second impulse response representative of said second propagation channel, • reception, by the reference antenna, of a third pilot sequence, modulated by said second impulse response, transmitted by the destination antenna on a carrier frequency, f2, of the frequency band dedicated to the transmissions from the destination communicating entity to the source communicating entity, and of estimating a combined impulse response representative of the succession of said second and first propagation channels, • temporal reversal, by the source communicating entity, of the combined impulse response, • combination, by the source communicating entity, of the temporally reversed combined impulse response and of the first impulse response, said steps being reiterated for at least some of the set of destination antennas and at least some of the set of source antennas, and • determination of pre-equalization coefficients for the data signal on the basis of a set of said combinations of impulse responses. • reception, by a reference antenna (A1 ref) of the set of source antennas, of a first pilot sequence transmitted by a destination antenna (A2 j) through a first propagation channel on a carrier frequency, f2, of the frequency band dedicated to the transmissions from the destination communicating entity to the source communicating entity, and of estimating a first impulse response representative of said first propagation channel, • reception, by the destination antenna, of a second pilot sequence transmitted by a source antenna (A1 i) through a second propagation channel between said source antenna and the destination antenna on a carrier frequency, f1, of the frequency band dedicated to the transmissions from the source communicating entity to the destination communicating entity, and of estimating a second impulse response representative of said second propagation channel, • reception, by the reference antenna, of a third pilot sequence, modulated by said second impulse response, transmitted by the destination antenna on a carrier frequency, f2, of the frequency band dedicated to the transmissions from the destination communicating entity to the source communicating entity, and of estimating a combined impulse response representative of the succession of said second and first propagation channels, • temporal reversal, by the source communicating entity, of the combined impulse response, • combination, by the source communicating entity, of the temporally reversed combined impulse response and of the first impulse response, • determination of pre-equalization coefficients for the data signal on the basis of a set of said combinations of impulse responses.