Patents by Inventor Ayman Elezabi

Ayman Elezabi 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).

  • Methods and apparatus for extracting bits of a source register based on a mask and right justifying the bits into a target register
    Patent number: 7685408
    Abstract: Techniques for performing a bit rake instruction in a programmable processor. The bit rake instruction extracts an arbitrary pattern of bits from a source register, based on a mask provided in another register, and packs and right justifies the bits into a target register. The bit rake instruction allows any set of bits from the source register to be packed together.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: March 23, 2010
    Assignee: Altera Corporation
    Inventors: Edward A. Wolff, Peter R. Molnar, Ayman Elezabi, Gerald George Pechanek
  • Methods and Apparatus for a Bit Rake Instruction
    Publication number: 20090019269
    Abstract: Techniques for performing a bit rake instruction in a programmable processor. The bit rake instruction extracts an arbitrary pattern of bits from a source register, based on a mask provided in another register, and packs and right justifies the bits into a target register. The bit rake instruction allows any set of bits from the source register to be packed together.
    Type: Application
    Filed: September 29, 2008
    Publication date: January 15, 2009
    Applicant: Altera Corporation
    Inventors: Edward A. Wolff, Peter R. Molnar, Ayman Elezabi, Gerald George Pechanek
  • Single-user decoder metrics for subtractive interference cancellation detectors in code-division multiple-access (CDMA) communication systems with time dependence variance residual multiple-access interference (RMAI)
    Patent number: 7035317
    Abstract: Improved branch metrics for Viterbi decoders in CDMA systems take into account the time dependency of the variance of the multiple access interference in any user's signal after the single-user detector, and the time dependency of the residual multiple access interference in any user's signal after subtractive interference cancellation is applied in two-stage detectors. The (residual) multiple access interference can be modeled as a Gaussian random variable with time dependent variance. Modeling the RMAI in such a way reduces the bit error rate in CDMA systems.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: April 25, 2006
    Assignee: North Carolina State University
    Inventors: Ayman Elezabi, Alexandra Duel-Hallen
  • Methods and apparatus for a bit rake instruction
    Publication number: 20030105945
    Abstract: Techniques for performing a bit rake instruction in a programmable processor. The bit rake instruction extracts an arbitrary pattern of bits from a source register, based on a mask provided in another register, and packs and right justifies the bits into a target register. The bit rake instruction allows any set of bits from the source register to be packed together.
    Type: Application
    Filed: October 29, 2002
    Publication date: June 5, 2003
    Applicant: BOPS, Inc.
    Inventors: Edward A. Wolff, Peter R. Molnar, Ayman Elezabi, Gerald George Pechanek
  • Single-user decoder metrics for subtractive interference cancellation detectors in code-division multiple-access (CDMA) communication systems
    Publication number: 20020122392
    Abstract: Improved branch metrics for Viterbi decoders in CDMA systems take into account the time dependency of the variance of the multiple access interference in any user's signal after the single-user detector, and the time dependency of the residual multiple access interference in any user's signal after subtractive interference cancellation is applied in two-stage detectors. The (residual) multiple access interference can be modeled as a Gaussian random variable with time dependent variance. Modeling the RMAI in such a way reduces the bit error rate in CDMA systems.
    Type: Application
    Filed: September 20, 2001
    Publication date: September 5, 2002
    Inventors: Ayman Elezabi, Alexandra Duel-Hallen