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Method and apparatus for electronic item identification in a communication system using known source parameters

  • US 20040179588A1
  • Filed: 03/11/2003
  • Published: 09/16/2004
  • Est. Priority Date: 03/11/2003
  • Status: Active Grant
First Claim
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1. A communications method comprising the steps of:

  • receiving signals from at least one signal source during a first signal source transmission;

    estimating at least one signal source parameter based on said received signals during said first signal source transmission;

    receiving signals from at least one signal source during a second signal source transmission; and

    determining a difference between said first and second signal source transmissions using said at least one estimated signal source parameter.

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