Patents by Inventor Aracely W. Forrester

Aracely W. Forrester has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Adaptive digital post distortion reduction
    Patent number: 8498369
    Abstract: A method for adaptive digital post distortion reduction is described. An analog radio frequency (RF) signal is received. The frequency of the analog RF signal is downconverted using analog circuitry. The analog RF signal is converted to a digital signal using an analog to digital converter (ADC). Digital post distortion reduction is applied to the digital signal to reduce nonlinearities in the digital signal.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: July 30, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Aracely W. Forrester, Roberto Rimini, Peter D. Heidmann, Joseph P. Burke, Paul J. Drexler
  • Adaptive digital predistortion of complex modulated waveform using peak and RMS voltage feedback from the output of a power amplifier
    Patent number: 8384476
    Abstract: Exemplary embodiments of the invention includes an amplifier and a processor that adapts a baseline or previous model of the input-output signal characteristic of the amplifier using metrics of the system, including peak power, peak voltage, average power, root mean square (RMS) voltage, samples of the output signal of the amplifier, or environmental metrics such as temperature, power supply voltage, signal frequency, etc. In particular, the system comprises an amplifier; a device to measure a metric of the system; a processor to generate a present model of the input-output signal characteristic of the amplifier based on the system metric; and a predistortion device to predistort the input signal for the amplifier based on the present amplifier model.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: February 26, 2013
    Assignee: QUALCOMM, Incorporated
    Inventors: Paul J. Draxler, Bruce A. Judson, Aracely W. Forrester
  • ADAPTIVE DIGITAL POST DISTORTION REDUCTION
    Publication number: 20110103455
    Abstract: A method for adaptive digital post distortion reduction is described. An analog radio frequency (RF) signal is received. The frequency of the analog RF signal is downconverted using analog circuitry. The analog RF signal is converted to a digital signal using an analog to digital converter (ADC). Digital post distortion reduction is applied to the digital signal to reduce nonlinearities in the digital signal.
    Type: Application
    Filed: October 30, 2009
    Publication date: May 5, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Aracely W. Forrester, Roberto Rimini, Peter D. Heidmann, Joseph P. Burke, Paul J. Draxler
  • ADAPTIVE DIGITAL PREDISTORTION OF COMPLEX MODULATED WAVEFORM USING LOCALIZED PEAK FEEDBACK FROM THE OUTPUT OF A POWER AMPLIFIER
    Publication number: 20100271123
    Abstract: Exemplary embodiments of the invention includes an amplifier and a processor that adapts a baseline or previous model of the input-output signal characteristic of the amplifier using metrics of the system, including peak power, peak voltage, average power, root mean square (RMS) voltage, samples of the output signal of the amplifier, etc. In particular, the system comprises an amplifier; a device to measure a metric of the system; a processor to generate a present model of the input-output signal characteristic of the amplifier based on the system metric as determined through a localized sampling window of the output signal; and a predistortion device to predistort the input signal for the amplifier based on the present amplifier model.
    Type: Application
    Filed: April 27, 2009
    Publication date: October 28, 2010
    Applicant: QUALCOMM INCORPORATED
    Inventors: Aracely W. Forrester, Philip D. Coan, Paul J. Draxler
  • ADAPTIVE DIGITAL PREDISTORTION OF COMPLEX MODULATED WAVEFORM USING PEAK AND RMS VOLTAGE FEEDBACK FROM THE OUTPUT OF A POWER AMPLIFIER
    Publication number: 20100033246
    Abstract: Exemplary embodiments of the invention includes an amplifier and a processor that adapts a baseline or previous model of the input-output signal characteristic of the amplifier using metrics of the system, including peak power, peak voltage, average power, root mean square (RMS) voltage, samples of the output signal of the amplifier, or environmental metrics such as temperature, power supply voltage, signal frequency, etc. In particular, the system comprises an amplifier; a device to measure a metric of the system; a processor to generate a present model of the input-output signal characteristic of the amplifier based on the system metric; and a predistortion device to predistort the input signal for the amplifier based on the present amplifier model.
    Type: Application
    Filed: August 11, 2008
    Publication date: February 11, 2010
    Applicant: QUALCOMM INCORPORATED
    Inventors: Paul J. Draxler, Bruce A. Judson, Aracely W. Forrester