Device for synchronizing a receiver on received preamble symbol modulated by an orthogonal frequency division multiplexing scheme, characterized in that the device comprises: - means for executing a coarse synchronization which provides an estimate of a first time offset and fractional frequency offset, - means for removing the fractional frequency offset from the preamble symbol, - means for performing on the symbol period localized by the first estimate of the time offset, an orthogonal frequency division multiplexing demodulation on the preamble symbol on which the fractional frequency offset is removed, - means for removing from the subcarriers of the demodulated preamble symbol the effect of a phase shift keying modulation, - means for performing an inverse discrete Fourier transform on the demodulated preamble symbol on which effect of a modulation, - means for determining a time offset τ from the output of the inverse discrete Fourier transform, - means for multiplying an inverse discrete Fourier transform of an array containing binary values equal to one at the indices of the non-zero subcarriers on which the preamble symbol is mapped by the time shifted output of the inverse discrete Fourier transform, - means for performing a discrete Fourier transform on the output of the multiplying means, - means for determining an integer carrier frequency offset from the output of the discrete Fourier transform, - means for compensating the effect of the carrier frequency offset for next received orthogonal division multiplexing symbol using the determined integer carrier frequency offset, - means for compensating the effect of the time offset for next received orthogonal division multiplexing symbol using the time offset τ. - means for executing a coarse synchronization which provides an estimate of a first time offset and fractional frequency offset, - means for removing the fractional frequency offset from the preamble symbol, - means for performing on the symbol period localized by the first estimate of the time offset, an orthogonal frequency division multiplexing demodulation on the preamble symbol on which the fractional frequency offset is removed, - means for removing from the subcarriers of the demodulated preamble symbol the effect of a phase shift keying modulation, - means for performing an inverse discrete Fourier transform on the demodulated preamble symbol on which effect of a modulation, - means for determining a time offset τ from the output of the inverse discrete Fourier transform, - means for multiplying an inverse discrete Fourier transform of an array containing binary values equal to one at the indices of the non-zero subcarriers on which the preamble symbol is mapped by the time shifted output of the inverse discrete Fourier transform, - means for performing a discrete Fourier transform on the output of the multiplying means, - means for determining an integer carrier frequency offset from the output of the discrete Fourier transform, - means for compensating the effect of the carrier frequency offset for next received orthogonal division multiplexing symbol using the determined integer carrier frequency offset, - means for compensating the effect of the time offset for next received orthogonal division multiplexing symbol using the time offset τ.