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Amplifier measurement and modeling processes for use in generating predistortion parameters

  • US 20010050592A1
  • Filed: 07/05/2001
  • Published: 12/13/2001
  • Est. Priority Date: 07/13/1999
  • Status: Active Grant
First Claim
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1. A method of generating an initial set of compensation parameters for use within a compensation circuit that predistorts an input transmission signal to a wideband amplifier to compensate for nonlinearities in an amplification process, the method comprising:

  • applying stimulation signals to the amplifier while recording observation data that represents a resulting output of the amplifier;

    evaluating the observation data to measure selected characteristics of the amplifier;

    constructing a non-linear model of the amplifier which incorporates the selected characteristics;

    adaptively adjusting the amplifier model to improve an accuracy of the model; and

    using the adjusted amplifier model to generate the initial set of compensation parameters.

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