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Synchronization judging circuit capable of operating moderately

  • US 20050054309A1
  • Filed: 09/09/2004
  • Published: 03/10/2005
  • Est. Priority Date: 09/10/2003
  • Status: Active Grant
First Claim
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1. A synchronization judging circuit comprising:

  • a measuring portion for measuring a signal to interference power ratio of a received signal at each frame;

    an averaging portion for calculating a moving average of a series of signal to interference power ratios for a predetermined number of frames to produce a mean value at each frame; and

    a counter for counting a number of consecutive frames each of which the mean value meets a predetermined threshold requirement;

    wherein;

    said counter compares a counted value with a predetermined threshold value to decide whether to perform a transmission control operation or not.

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