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RELAXED DIGITIZATION SYSTEM LINEARIZATION

  • US 20160094253A1
  • Filed: 05/20/2014
  • Published: 03/31/2016
  • Est. Priority Date: 05/20/2013
  • Status: Active Grant
First Claim
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1. A digital predistortion linearizer, comprising:

  • a first input to receive an input signal representative of a desired output from a plant, the desired output having a desired output bandwidth;

    a configurable pre-distorter to determine a driving signal representative of an input to the plant to achieve the desired output from the plant, the driving signal having a driving signal data rate equal to a product of a driving signal sampling rate and a driving signal precision;

    a first output to provide an output signal representative of the driving;

    a second input to receive an analog sensor signal representative of an achieved output from the plant;

    a sampler coupled to the second input to process the analog sensor signal, wherein the sampler is responsive to components of the analog sensor signal outside the desired output bandwidth in a sensor bandwidth greater than the desired output bandwidth, the sampler includes an analog to digital converter (ADC) coupled to the second input, the ADC is to provide digital outputs at a sensor signal precision lower than the driving signal precision, and the sampler is to provide a sampled sensor signal having a sensor signal data rate smaller than the driving signal data rate; and

    an estimator to receive the sampled sensor signal from the sampler and the driving signal determined by the pre-distorter, and to provide configuration data for configuring the pre-distorter.

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