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Phaselock threshold correction

  • US 6,229,858 B1
  • Filed: 06/30/1998
  • Issued: 05/08/2001
  • Est. Priority Date: 12/09/1996
  • Status: Expired due to Term
First Claim
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1. A correction circuit for automatic gain control of a variable gain amplifier in a communications receiver, comprising:

  • a signal estimator responsive to the output of the variable gain amplifier and generating an output signal representing an estimate of the noise component of a signal received by the communications receiver;

    a reference source generating an output reference signal;

    a summer receiving the output signal of the signal estimator and the output signal of the reference source and generating an output representing an automatic gain control voltage applied to the variable gain amplifier.

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