Patents by Inventor Karim Toussi

Karim Toussi 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).

  • Patent number: 7394861
    Abstract: Apparatus and method for generating signal gain coefficients for use in packet data communication between a single-input-single-output (SISO) transceiver and a single-input-multiple-output/multiple-input-single-output (SIMO/MISO) transceiver. Coordinate rotation digital computation (CORDIC) techniques are used to generate transmit channel coefficients which are substantially complementary to receive channel coefficients representing relative strengths of individual signals received via multiple spatially diverse antenna elements and corresponding to a wireless data signal originating from a particular SISO radio frequency (RF) transceiver. Using such transmit channel coefficients to produce outgoing RF signals for transmission via the same antenna elements and reception by such particular SISO RF transceiver provides for signal transmission and reception diversity.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: July 1, 2008
    Assignee: National Semiconductor Corporation
    Inventors: Haiyun Tang, Karim Toussi, Ahmad Bahai
  • Patent number: 7228113
    Abstract: Apparatus and method for providing for packet data communication between a single-input-single-output (SISO) transceiver and a single-input-multiple-output/multiple-input-single-output (SIMO/MISO) transceiver. Receive channel coefficients representing relative strengths of individual signals received via multiple spatially diverse antenna elements and corresponding to a wireless data signal originating from a particular SISO radio frequency (RF) transceiver are used to provide substantially complementary transmit channel coefficients for use in producing outgoing RF signals to be transmitted via the same antenna elements for reception by such particular SISO RF transceiver.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: June 5, 2007
    Assignee: National Semiconductor Corporation
    Inventors: Haiyun Tang, Hamid Aghajan, Karim Toussi, Ahmad Bahai