ALL DIGITAL TRANSMITTER NOISE CORRECTION

  • US 20140269970A1
  • Filed: 03/12/2013
  • Published: 09/18/2014
  • Est. Priority Date: 03/12/2013
  • Status: Active Grant
First Claim
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1. A circuit comprising:

  • an estimator circuit modeling nonlinear signal distortion from a transmitter at a receiver based on an analysis of an outgoing digital signal converted to an analog signal and transmitted at the transmitter;

    a mixer mixing an output of the estimator circuit with a frequency offset signal and shifting the estimator circuit output to an intermediate frequency offset representing a difference between frequencies of the transmitter and the receiver; and

    a subtractor coupled to the mixer and subtracting the frequency shifted estimator circuit output from a digitized incoming signal received at the receiver.

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