| 摘要 |
The procedure involves the determination of the transmission format of complex symbols within a received signal which is formatted in complex symbol blocks. Each block comprises a first occurrence (GIk) of a complex symbol group, and a second occurrence (gIk) of the same complex symbol group. The format is determined by effecting an auto-correlation between the first and the second occurrences. This includes storage of the first complex symbol series with the aid of an acquisition time window (AW), and the auto-correlation (311,312) of the first complex symbol series with a second series selected at another moment with the aid of a correlation time window (CW). The transmission format is determined (330,340,350,380) by looking for a correlation maximum between the first and second series, by synchronising of the windows on the received signal.
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