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LOOPBACK INTERFERENCE CANCELLATION

  • US 20200136660A1
  • Filed: 09/20/2019
  • Published: 04/30/2020
  • Est. Priority Date: 10/31/2018
  • Status: Abandoned Application
First Claim
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1. A system including:

  • an interference estimator configured to;

    generate a model for estimating one or more interference signals according to one or more first interference signals due to a first transmit radio (RF) signal output from a transmitter coupled to an input port of a power amplifier, andestimate, according to the model, one or more second interference signals due to a second transmit RF signal output from the transmitter;

    a predistortion calibrator coupled to the interference estimator, the predistortion calibrator configured to determine, based on the estimated one or more second interference signals due to the second transmit RF signal, non-linearity of the power amplifier; and

    a predistortion generator coupled to the predistortion calibrator, the predistortion generator configured to perform predistortion to compensate for the non-linearity of the power amplifier.

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