Importance

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Abstract

This invention provides a reception synchronization control device that controls reception synchronization of demodulated signals to be established, the demodulated signals being obtained by demodulating a phase modulated signal transmitted by a phase modulation, wherein the reception synchronization control device includes a signal level detector that detects signal levels of sampled demodulated signals extracted by sampling analog demodulated signals; a constellation position specifier that specifies constellation positions of plural kinds of data contained in the sampled demodulated signals displayed on a polar coordinates display based on the detected signal levels; and a phase angle difference calculation processor that calculates a difference between a phase angle calculated based on the specified constellation positions and a reference phase angle, thereby controlling the phase angle so that the difference is within a predetermined range. Further, the invention discloses a reception synchronization control method, to control reception synchronization of demodulated signals to be established, using the above reception synchronization control device, etc.

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First Claim