Error tracking loop

  • US 5,406,587 A
  • Filed: 02/08/1993
  • Issued: 04/11/1995
  • Est. Priority Date: 02/08/1993
  • Status: Expired due to Term
First Claim
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1. A phase noise tracking circuit comprising:

  • means for receiving a complex data signal having an in-phase data component and a related quadrature component;

    means for recovering said in-phase data component from said received signal;

    means for approximating said quadrature component from said recovered in-phase data component; and

    means for adjusting the phase of the vector comprising said recovered in-phase data component and said approximated quadrature component to reduce the phase noise characterizing said recovered in-phase data component.

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