| 摘要 |
The invention relates to a method of isolating a block frequency on the bas is of a received signal formatted in blocks. Preferably, the signal is formed b y symbols having a coded modulation transmitted according to an orthogonal frequency division multiplexing (OFDM). The invention comprises means for delaying (12) the symbol blocks an d for correlating (13) a symbol block with a delayed symbol block that corresponds thereto. One thus obtains a difference signal e(t) which is used, for example, for synchronization purposes.
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