Patents by Inventor Reza Omrani

Reza Omrani 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).

  • Code cycle modulation in optical code division multiple access systems
    Patent number: 7616618
    Abstract: An optical code division multiple access (OCDMA) system includes an optical transmitter system configured to transmit data from a plurality of users through a shared optical channel by encoding the data from each user with a spreading code assigned to that user. Each spreading code includes a unique sequence of T time chips along a time axis. The data from each user is representable by T symbols. The OCDMA system further includes an optical receiver system configured to demodulate the data from each user by correlating signals received from the transmitter system with the spreading code assigned to that user. When transmitting a data symbol for each user, the transmitter system selects one out of T distinct cyclic shifts of the spreading code assigned to that user, and transmits the selected cyclic shift of the assigned spreading code along the time axis.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: November 10, 2009
    Assignee: University of Southern California
    Inventors: P. Vijay Kumar, Reza Omrani, Joseph D. Touch, Alan E. Willner, Poorya Saghari
  • Code cycle modulation in optical code division multiple access systems
    Publication number: 20060209739
    Abstract: An optical code division multiple access (OCDMA) system includes an optical transmitter system configured to transmit data from a plurality of users through a shared optical channel by encoding the data from each user with a spreading code assigned to that user. Each spreading code includes a unique sequence of T time chips along a time axis. The data from each user is representable by T symbols. The OCDMA system further includes an optical receiver system configured to demodulate the data from each user by correlating signals received from the transmitter system with the spreading code assigned to that user. When transmitting a data symbol for each user, the transmitter system selects one out of T distinct cyclic shifts of the spreading code assigned to that user, and transmits the selected cyclic shift of the assigned spreading code along the time axis.
    Type: Application
    Filed: November 29, 2005
    Publication date: September 21, 2006
    Inventors: P. Kumar, Reza Omrani, Joseph Touch, Alan Willner, Poorya Saghari