| 摘要 |
The system uses a signal delay in order to ensure reliable identification of original transmission clock signal. The method enables isolation of a frequency block from a received signal which is formatted in blocks. The received signal is preferably formed of symbols having a coded modulation emitted according to an orthogonal frequency division multiplex pattern (OFDM). The circuit comprises an element for delaying (12) the symbol blocks, and for correlating (13) a block of symbols with a delayed block of symbols to which it corresponds. This results in a difference signal (e(t)) which serves for synchronisation purposes. |
