Patents by Inventor William Chimitt

William Chimitt 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).

  • Patent number: 7583608
    Abstract: Coefficients for an Minimum Mean Square Error (MMSE) equalizer may be generated without the receiver performing noise power estimation. The noise power may be inferred from knowledge of the Modulation and Coding Scheme (MCS) that is selected by the link adaptation system. The link adaptation system dynamically converges to a data rate, and that data rate implies an Signal-to-Noise Ratio (SNR) range within which the communication device operates. Using the SNR range, an upper end of the range is selected and used as an SNR value for the MMSE equalizer calculations.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: September 1, 2009
    Assignee: Intel Corporation
    Inventor: William Chimitt
  • Publication number: 20060269023
    Abstract: The effects of interference are mitigated in a wireless system by estimating spatial characteristics of an interfering signal, and using those characteristics in the formation of a spatial equalizer.
    Type: Application
    Filed: May 26, 2005
    Publication date: November 30, 2006
    Inventors: William Chimitt, Sudhakar Kalluri, Keith Holt
  • Publication number: 20060104377
    Abstract: A multicarrier transmitter performs bit-interleaving suitable for transmitting more than one spatial stream over a multicarrier communication channel. The multicarrier transmitter may include a bit-grouping shifter to shift QAM symbol-bit groupings of a spatial stream among subcarriers of the multicarrier communication signal, and a bit-position permuter to rotate bits among bit positions within subgroupings of the QAM symbol-bit groupings of the second spatial stream.
    Type: Application
    Filed: November 16, 2004
    Publication date: May 18, 2006
    Inventors: William Chimitt, Stanley Ling, Sumeet Sandhu
  • Publication number: 20060088006
    Abstract: Coefficients for an Minimum Mean Square Error (MMSE) equalizer may be generated without the receiver performing noise power estimation. The noise power may be inferred from knowledge of the Modulation and Coding Scheme (MCS) that is selected by the link adaptation system. The link adaptation system dynamically converges to a data rate, and that data rate implies an Signal-to-Noise Ratio (SNR) range within which the communication device operates. Using the SNR range, an upper end of the range is selected and used as an SNR value for the MMSE equalizer calculations.
    Type: Application
    Filed: October 27, 2004
    Publication date: April 27, 2006
    Inventor: William Chimitt
  • Publication number: 20050277423
    Abstract: Complex antennas weights for use in beamforming in a multiple-antenna system are determined based upon clear channel assessment (CCA) information in a wireless networking environment.
    Type: Application
    Filed: June 10, 2004
    Publication date: December 15, 2005
    Inventors: Sumeet Sandhu, William Chimitt
  • Publication number: 20050135468
    Abstract: Disclosed are a multi-tap filter, and method of using same, to filter an analog input signal to provide an equalized analog signal. Each of a plurality of coefficients in the multi-tap filter may be updated based, at least in part, upon a comparison of the equalized analog signal with one or more symbol values at an instance determined by inter-symbol timing information.
    Type: Application
    Filed: December 19, 2003
    Publication date: June 23, 2005
    Inventors: Bhushan Asuri, Anush Krishnaswami, William Chimitt
  • Publication number: 20050135473
    Abstract: Described are methods and devices for processing a signal transmitting symbols which are temporally spaced on symbol intervals. The signal may be tapped at fractional symbol intervals to provide a plurality of signal taps at the fractional symbol intervals. Each of a plurality of coefficients may be applied to a corresponding one of the signal taps to generate an equalized signal. For at least one of the signal taps, the corresponding coefficient may be updated no more frequently than once per symbol interval.
    Type: Application
    Filed: December 19, 2003
    Publication date: June 23, 2005
    Inventors: Bhushan Asuri, Anush Krishnaswami, William Chimitt
  • Publication number: 20050135467
    Abstract: Disclosed are a system, method and device for generating an equalized signal from an input signal. Symbols in the equalized signal may be detected on each of a sequence of symbol intervals to recover a symbol value in the symbol interval. A feedback coefficient may be applied to a symbol value recovered in a previous symbol interval to generate the equalized signal in a current symbol interval. The feedback coefficient may be generated based, at least in part, on an estimated error associated with the equalized signal. The estimated error associated with the equalized output signal from among a plurality of candidate estimated error values.
    Type: Application
    Filed: December 19, 2003
    Publication date: June 23, 2005
    Inventors: Bhushan Asuri, Anush Krishnaswami, William Chimitt