A digital pre-distortion method for OFDM-based communication system, wherein a transmitter is designed to transmit an OFDM symbol comprised of a set of N FFT complex symbols {s k}, with each complex symbol s k being intended to be transmitted onto a single subcarrier k among a set of N FFT sub-carriers, with each complex symbol s k being modulated according to a determined Modulation Coding Scheme among a plurality of implementable MCSs and each subcarrier k belonging to a subset of said N FFT sub-carriers among a plurality of predetermined subsets, said transmitter being designed to consult a set of data tables, wherein each data table is predetermined for one determined of said implementable MCSs and wherein each table comprising a plurality of weighting coefficients, with each weighting coefficient being associated to a determined subset of subcarriers, the method comprising the following steps, after a so-called frequency mapping step for generating said set of N FFT complex symbols {s k} of the OFDM symbol: 1) Compute a Peak-to-Average Power Ratio of the OFDM symbol, 2) If the computed PAPR is larger than a predetermined threshold value: a) For at least one complex symbol s k, compute a vector metric M k, with said vector metric M k measuring the contribution of the subcarrier k to the computed Peak-to-Average Power Ratio, and b) For said at least one complex symbol s k, determine a weighting coefficient W k by consulting the one of said data tables which is predetermined for the MCS according to which said at least one complex symbol s k is modulated and with said weighting coefficient W k being associated in the data table with the determined subset to which belongs the subcarrier k onto which said at least one complex symbol s k is intended to be transmitted, then c) For said at least one complex symbol s k, compute an error signal e k in function of the computed vector metric M k and the determined weighting coefficient W k, and d) For said at least one complex symbol s k, compute a perturbed complex symbol s k in function of said at least one complex symbol s k and the computed error signal e k, then 3) Generate a perturbed set of N FFT complex symbols { s k} by replacing, in said set of N FFT complex symbols {s k}, each of said at least one complex symbol s k by the computed perturbed complex symbol s k which corresponds thereto, then 4) Perform an N FFT - point Inverse Fast Fourier Transform to the perturbed set of N FFT complex symbols { s k}, for generating a corresponding set of time-domain samples { t k} to be pushed, through a power amplifier of the transmitter, towards radiofrequency transmission. 1) Compute a Peak-to-Average Power Ratio of the OFDM symbol, 2) If the computed PAPR is larger than a predetermined threshold value: a) For at least one complex symbol s k, compute a vector metric M k, with said vector metric M k measuring the contribution of the subcarrier k to the computed Peak-to-Average Power Ratio, and b) For said at least one complex symbol s k, determine a weighting coefficient W k by consulting the one of said data tables which is predetermined for the MCS according to which said at least one complex symbol s k is modulated and with said weighting coefficient W k being associated in the data table with the determined subset to which belongs the subcarrier k onto which said at least one complex symbol s k is intended to be transmitted, then c) For said at least one complex symbol s k, compute an error signal e k in function of the computed vector metric M k and the determined weighting coefficient W k, and d) For said at least one complex symbol s k, compute a perturbed complex symbol s k in function of said at least one complex symbol s k and the computed error signal e k, then a) For at least one complex symbol s k, compute a vector metric M k, with said vector metric M k measuring the contribution of the subcarrier k to the computed Peak-to-Average Power Ratio, and b) For said at least one complex symbol s k, determine a weighting coefficient W k by consulting the one of said data tables which is predetermined for the MCS according to which said at least one complex symbol s k is modulated and with said weighting coefficient W k being associated in the data table with the determined subset to which belongs the subcarrier k onto which said at least one complex symbol s k is intended to be transmitted, then c) For said at least one complex symbol s k, compute an error signal e k in function of the computed vector metric M k and the determined weighting coefficient W k, and d) For said at least one complex symbol s k, compute a perturbed complex symbol s k in function of said at least one complex symbol s k and the computed error signal e k, then 3) Generate a perturbed set of N FFT complex symbols { s k} by replacing, in said set of N FFT complex symbols {s k}, each of said at least one complex symbol s k by the computed perturbed complex symbol s k which corresponds thereto, then 4) Perform an N FFT - point Inverse Fast Fourier Transform to the perturbed set of N FFT complex symbols { s k}, for generating a corresponding set of time-domain samples { t k} to be pushed, through a power amplifier of the transmitter, towards radiofrequency transmission.