The present invention concerns a method and a device for transferring, by a first telecommunication device, data to a second telecommunication device through a telecommunication network using multiple carrier frequencies. The first telecommunication device maps the data on first carrier frequencies of plural consecutive groups of first carrier frequencies, where each group of first carrier frequencies is spaced from the next group of first carrier frequencies by a second carrier frequency and at least two second carrier frequencies are carrier frequencies which are susceptible to be the demodulation carrier frequency of the second telecommunication device. The first telecommunication device also transfers the mapped data to the second telecommunication device.