| 摘要 |
Disclosed is a digital demodulation technique in which a reception modulated-wave signal is converted into a digital signal in synchronism with a sampling frequency, whereafter carrier regeneration/detection is carried out upon the digital signal to thereby output a detection signal. Then, the detection signal is subject to interpolation and resampling on the basis of a clock frequency established asynchronously with and independently of the sampling frequency, so that a timing component is extracted from the detection signal in synchronism with the clock frequency to thereby output a reception data. In the digital demodulation technique, since the sampling frequency and the clock frequency are established asynchronously with and independently of each other, jitter or the like produced in clock regeneration do not affect the carrier regeneration/detection. Consequently, noiseless reception data with little jitters can be regenerated.
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