CARRIER WAVE REPRODUCING DEVICE, DEMODULATOR, REPRODUCED CARRIER WAVE FALSE DRAWING DETECTING METHOD, AND ITS PROGRAM
摘要
<P>PROBLEM TO BE SOLVED: To shorten a time from the re-drawing of a received signal to the judgement of synchronization by independently detecting a false drawing state of a carrier wave by a demodulator without using a frame asynchronization signal. <P>SOLUTION: A carrier wave reproducing part 50 detects a false drawing signal point position of a reproduced carrier wave signal on the basis of the signal point position of a reproduced carrier wave signal at which the reproduced carrier wave signal is mapped onto a phase plane. A phase control signal area judgment control part 60 generates a control signal for avoiding synchronous drawing at a false drawing signal point position on the basis of a phase control signal at the false drawing signal point position of the reproduced carrier wave signal. <P>COPYRIGHT: (C)2008,JPO&INPIT
