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DIGITAL PRE-DISTORTION SYSTEM FOR RADIO FREQUENCY TRANSMITTERS WITH REDUCED SAMPLING RATE IN OBSERVATION LOOP

  • US 20140161207A1
  • Filed: 07/01/2013
  • Published: 06/12/2014
  • Est. Priority Date: 12/07/2012
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a digital to analog converter that generates analog data based on digital data;

    a power amplifier that generates output data based on the analog data;

    an analog-to-digital converter that generates samples based on the output data at a sampling rate less than a Nyquist sampling rate;

    a filter that filters the digital data and that generates filtered data; and

    a pre-distortion module that distorts the digital data based on the samples and the filtered data to compensate for distortion generated by the power amplifier.

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