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AGC system with pilot using digital data reference

DC
  • US 5,565,932 A
  • Filed: 11/08/1994
  • Issued: 10/15/1996
  • Est. Priority Date: 11/08/1994
  • Status: Expired due to Term
First Claim
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1. A method of operating a digital data receiver for receiving a digital signal including a pilot and a plurality of multilevel data symbols occurring at a constant symbol rate comprising:

  • converting received data symbols to corresponding digital values;

    eliminating effects of said pilot on said digital values;

    sampling said data symbols for a predetermined time for determining an average data symbol value;

    comparing the determined average data symbol value with a reference average data symbol value; and

    adjusting the gain of said receiver as a function of the comparison.

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