SYSTEM, METHOD AND COMPUTER PROGRAM TO COMPUTE A FAST FOURIER TRANSFORM OF DATA BLOCKS

摘要

The present invention relates to a method and a demodulator for processing a Fast Fourier Transform using data blocks. The invention is characterized in that it comprises a Fast Fourier Transform coprocessor (FFT P) and a digital signal processor (DSP). Said coprocessor (FFT P) comprises a start function (F STRT) and a computation function (F FFT). Said start function (F STRT) is adapted to send to said computation function (F FFT) a start signal (S STRT) each time a first data (D) of a new block is received. Said digital signal processor (DSP) comprises a time error function (F TMERR), which indicates to the start function (F STRT) for how much data it has to wait before a new start signal (S STRT) is sent.Use: demodulator in a terrestrial receiver.