Patents by Inventor Patrick Vandenameele-Lepla

Patrick Vandenameele-Lepla 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).

  • Method and apparatus for frequency-domain tracking of residual frequency and channel estimation offsets
    Patent number: 7170961
    Abstract: Various methods and apparatus for frequency-domain estimation of carrier frequency offsets are provided in which the carrier frequency offset estimate is robust against non-white (frequency-dependent) noise. A carrier-specific weighting factor is associated with each carrier of a multi-carrier signal. Using the carrier-specific weighting factors, a carrier frequency offset estimate is computed from received signals and estimated channel transfer functions associated with each of the carriers. Because greater weights are given to carriers whose frequencies include lower noise and/or carriers transmitting a known sequence of symbols, the estimate of the carrier frequency offset is improved. The carrier frequency offset estimate may then be applied in a feedback loop to phase-compensate a subsequently received signal.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: January 30, 2007
    Inventor: Patrick Vandenameele-Lepla
  • Method and apparatus for channel estimation
    Patent number: 7031250
    Abstract: Various methods and systems efficiently implement broadband multi-carrier communication systems. The invention exploits the structural properties of a frequency-domain channel estimator and transforms it into the time domain. This allows the sharing of certain blocks of hardware (e.g., matched filters otherwise used for timing acquisition) which results in significant reduction of complexity.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: April 18, 2006
    Assignee: RF Micro Devices, Inc.
    Inventor: Patrick Vandenameele-Lepla
  • Method and apparatus for frequency-domain tracking of residual frequency and channel estimation offsets
    Publication number: 20030128751
    Abstract: Various methods and apparatus for frequency-domain estimation of carrier frequency offsets are provided in which the carrier frequency offset estimate is robust against non-white (frequency-dependent) noise. A carrier-specific weighting factor is associated with each carrier of a multi-carrier signal. Using the carrier-specific weighting factors, a carrier frequency offset estimate is computed from received signals and estimated channel transfer functions associated with each of the carriers. Because greater weights are given to carriers whose frequencies include lower noise and/or carriers transmitting a known sequence of symbols, the estimate of the carrier frequency offset is improved. The carrier frequency offset estimate may then be applied in a feedback loop to phase-compensate a subsequently received signal.
    Type: Application
    Filed: January 8, 2002
    Publication date: July 10, 2003
    Applicant: Resonext Communications, Inc.
    Inventor: Patrick Vandenameele-Lepla
  • Method and apparatus for channel estimation
    Publication number: 20030058787
    Abstract: Various methods and systems efficiently implement broadband multi-carrier communication systems. The invention exploits the structural properties of a frequency-domain channel estimator and transforms it into the time domain. This allows the sharing of certain blocks of hardware (e.g., matched filters otherwise used for timing acquisition) which results in significant reduction of complexity.
    Type: Application
    Filed: September 27, 2001
    Publication date: March 27, 2003
    Applicant: Resonext Communications, Inc.
    Inventor: Patrick Vandenameele-Lepla