Patents by Inventor Timothy J. Lubecki

Timothy J. Lubecki 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).

  • Multiuser detector for variable spreading factors
    Patent number: 7778232
    Abstract: A multiuser detector method and receiver that detects and decodes synchronous or asynchronous CDMA subchannels having different spreading factors with reduced computational complexity. The multiuser receiver is compatible with ZF-BLE, MMSE, decorrelating detectors and the like using Cholesky decomposition to minimize numeric operations. The receiver and method arranges the columns of system transmission response matrices representing the response characteristics of individual users into a total system transmission response matrix which represents a plurality of matched-filter responses for a given block of received data. The invention when used in conjunction with Cholesky decomposition reduces the number of required mathematic operations prior to parallel matched filtering.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: August 17, 2010
    Assignee: InterDigital Technology Corporation
    Inventors: Alexander Reznik, Timothy J. Lubecki, Ariela Zeira
  • Multiuser detector for variable spreading factors
    Publication number: 20080198828
    Abstract: A multiuser detector method and receiver that detects and decodes synchronous or asynchronous CDMA subchannels having different spreading factors with reduced computational complexity. The multiuser receiver is compatible with ZF-BLE, MMSE, decorrelating detectors and the like using Cholesky decomposition to minimize numeric operations. The receiver and method arranges the columns of system transmission response matrices representing the response characteristics of individual users into a total system transmission response matrix which represents a plurality of matched-filter responses for a given block of received data. The invention when used in conjunction with Cholesky decomposition reduces the number of required mathematic operations prior to parallel matched filtering.
    Type: Application
    Filed: October 27, 2006
    Publication date: August 21, 2008
    Applicant: InterDigital Technology Corporation
    Inventors: Alexander Reznik, Timothy J. Lubecki, Ariela Zeira
  • Multiuser detector for variable spreading factors
    Patent number: 7136369
    Abstract: A multiuser detector that detects and decodes synchronous or asynchronous CDMA subchannels having different spreading factors with reduced computational complexity. The multiuser detector is compatible with ZF-BLE, MMSE, decorrelating detectors and the like using Cholesky decomposition to minimize numeric operations. The system and method arranges the columns of system transmission response matrices representing the response characteristics of individual users into a total system transmission response matrix which represents a plurality of matched-filter responses for a given block of received data. The invention in conjunction with Cholesky decomposition reduces the number of required mathematic operations prior to parallel matched filtering.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: November 14, 2006
    Assignee: InterDigtal Rechnology Corporation
    Inventors: Alexander Reznik, Timothy J. Lubecki, Ariela Zeira
  • Multiuser detector for variable spreading factors
    Publication number: 20020176392
    Abstract: A multiuser detector that detects and decodes synchronous or asynchronous CDMA subchannels having different spreading factors with reduced computational complexity. The multiuser detector is compatible with ZF-BLE, MMSE, decorrelating detectors and the like using Cholesky decomposition to minimize numeric operations. The system and method arranges the columns of system transmission response matrices representing the response characteristics of individual users into a total system transmission response matrix which represents a plurality of matched-filter responses for a given block of received data. The invention in conjunction with Cholesky decomposition reduces the number of required mathematic operations prior to parallel matched filtering.
    Type: Application
    Filed: March 19, 2002
    Publication date: November 28, 2002
    Inventors: Alexander Reznik, Timothy J. Lubecki, Ariela Zeira