| 摘要 |
<p>The invention relates to a system for the multicarrier transmission of digital data, comprising at least one transmitter including a series-parallel converter and an iFFT block (110), said transmitter also comprising a frequency-spreading device (100) which applies each signal resulting from the multiplication of a data sample and one of the pre-determined frequency coefficients of the prototype filter of a synthesis filter bank to one of the inputs of the iFFT block having a size strictly greater than the number of sub-channels. The invention also relates to one such system comprising at least one receiver including a series-parallel converter and an FFT block having a size strictly greater than the number of sub-channels of the system and in which the receiver also comprises a frequency-despreading device which multiplies the signal of each output of the FFT block by one of the pre-determined frequency coefficients of the prototype filter of an analysis filter bank and adds the results of these multiplications in order to provide at least part of the output signal of the receiver.</p> |
