Patents by Inventor Hasham El Gamal

Hasham El Gamal 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 of generating space-time codes for generalized layered space-time architectures
    Patent number: 7012967
    Abstract: Space-time codes for use with layered architectures with arbitrary numbers of antennas are provided such as rate k/n convolutional codes (e.g., rates higher than or equal to 1/n where n is the number of transmit antennas). Convolutional codes for layered space-time architectures are generated using matrices over the ring F[[D]] of formal power series in variable D.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: March 14, 2006
    Inventors: A. Roger Hammons, Jr., Hasham El Gamal
  • Method of generating space-time codes for generalized layered space-time architectures
    Publication number: 20030194022
    Abstract: Space-time codes for use with layered architectures with arbitrary numbers of antennas are provided such as rate k/n convolutional codes (e.g., rates higher than or equal to 1/n where n is the number of transmit antennas). Convolutional codes for layered space-time architectures are generated using matrices over the ring F[[D]] of formal power series in variable D.
    Type: Application
    Filed: May 6, 2003
    Publication date: October 16, 2003
    Applicant: HUGHES ELECTRONICS CORPORATION
    Inventors: A. Roger Hammons, Hasham El Gamal
  • Method of generating space-time codes for generalized layered space-time architectures
    Patent number: 6560295
    Abstract: Space-time codes for use with layered architectures with arbitrary numbers of antennas are provided such as rate k/n convolutional codes (e.g., rates higher than or equal to 1/n where n is the number of transmit antennas). Convolutional codes for layered space-time architectures are generated using matrices over the ring F[[D]] of formal power series in variable D.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: May 6, 2003
    Assignee: Hughes Electronics Corporation
    Inventors: A. Roger Hammons, Jr., Hasham El Gamal