| 摘要 |
In a method for realising carrier wave synchronisation in the reception of a multi-level, two-dimensional modulation signal, the received signal is demodulated by using at least one local oscillator (3) in order to generate the local oscillator frequency. In the method, the local oscillator (3) performs a frequency scanning within the frequency range of the reception; during the frequency scanning, a demodulated signal point system is formed of the received signal by using the frequency generated by the local oscillator (3). Furthermore, the demodulated signal point system in the method is examined in order to find out at which point of time the frequency of the local oscillator is synchronised to the carrier wave frequency of the received modulation signal. <IMAGE>
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