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Apparatus and method for corresponding frequency synchronization in on-channel repeater

  • US 7,773,665 B2
  • Filed: 05/12/2005
  • Issued: 08/10/2010
  • Est. Priority Date: 05/12/2004
  • Status: Expired due to Fees
First Claim
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1. A frequency synchronizing apparatus for an on-channel repeater receiving signals on one channel and distributing the signals on the same channel, comprising:

  • a carrier recovery means for compensating a carrier frequency error of a receiving signal;

    a timing recovery means for compensating a sampling timing error of the receiving signal;

    a carrier error reflecting means for reflecting the carrier frequency error extracted from the carrier recovery means to a transmitting signal;

    a timing error reflecting means for reflecting the sampling timing error extracted from the timing recovery means to the transmitting signal; and

    wherein the timing error reflecting means includes;

    a numerically controlled oscillator for converting the sampling timing phase error extracted from the timing recovery means into a sample rate;

    an inverse converter for obtaining an inverse value of the converted sample rate; and

    a resampler for resampling the transmitting signal according to the inverse value of the sample rate.

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