| 摘要 |
A frequency converter converts the frequency of a PSK signal into a frequency of a carrier to be reproduced. A carrier reproducing circuit including a PLL circuit reproduces the carrier. The intended data contained in the reproduced carrier is demodulated. A frequency correction data generator forms correction data according to a bit error rate of the demodulated data, and superposes the correction data on a control voltage to a voltage controlled oscillator of the PLL circuit.
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