Is a
Patent attributes
Current Assignee
0
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masayuki Tsumura0
Date of Patent
March 16, 2010
0Patent Application Number
105336300
Date Filed
November 19, 2003
0Patent Primary Examiner
Patent abstract
It is determined whether phase noise and parasitic oscillation take place on the basis of a carrier-to-noise (C/N) ratio calculated with amplitudes in an amplitude direction of signal points of a reception signal and a C/N ratio calculated with amplitudes in a phase direction of the signal points of the reception signal. Further, when it has been determined that phase noise and parasitic oscillation take place, an alarm is displayed on a screen. When it has been determined that phase noise and parasitic oscillation take place, the phase of a demodulation circuit is compensated based on the detected phase noise.
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