Patents by Inventor Mohamad A. Zeidan

Mohamad A. Zeidan 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: 10243678
    Abstract: Dynamic characterization of complex high-order nonlinearity in transmitter (TX) and receiver (RX) signal chains of transceiver systems can be efficiently and accurately performed. A loopback connection may be used to facilitate self-characterization. Appropriate RX and TX configuration settings may be developed to facilitate de-coupling of individual RX and TX nonlinearities from measured cascade nonlinearity. The system's high-order response to a two-tone signal generation may be measured, and complex mathematical analysis may be performed to identify and isolate passband nonlinear components to extract a high-order memory-less model for the system. The extracted system model may be used in the corrective and non-iterative pre-distortion of generated signals and in the post-distortion of received signals to improve linearity performance of the transceiver.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: March 26, 2019
    Assignee: National Instruments Corporation
    Inventors: Mohamad A. Zeidan, Christopher J. Behnke, Syed Jaffar Shah
  • Publication number: 20160055726
    Abstract: A tactile communication apparatus that includes a signal receiver configured to decode data received via a wireless signal a plurality of electro tactile pads on one side, each pad configured to respectively activate and deactivate to form a plurality of pad combinations based on a plurality of activation signals, and a communication processor configured to generate the plurality of electro tactile pad activation signals based on the received data so as to convey the data to a user through the plurality of pad combinations of the tactile communication apparatus.
    Type: Application
    Filed: August 20, 2014
    Publication date: February 25, 2016
    Inventors: Thieab Aldossary, Mohamad A. Zeidan
  • Publication number: 20150118971
    Abstract: Dynamic characterization of complex high-order nonlinearity in transmitter (TX) and receiver (RX) signal chains of transceiver systems can be efficiently and accurately performed. A loopback connection may be used to facilitate self-characterization. Appropriate RX and TX configuration settings may be developed to facilitate de-coupling of individual RX and TX nonlinearities from measured cascade nonlinearity. The system's high-order response to a two-tone signal generation may be measured, and complex mathematical analysis may be performed to identify and isolate passband nonlinear components to extract a high-order memory-less model for the system. The extracted system model may be used in the corrective and non-iterative pre-distortion of generated signals and in the post-distortion of received signals to improve linearity performance of the transceiver.
    Type: Application
    Filed: July 11, 2014
    Publication date: April 30, 2015
    Inventors: Mohamad A. Zeidan, Christopher J. Behnke, Syed Jaffar Shah
  • Patent number: 7315172
    Abstract: A mechanism for measuring noise densities below the noise floor of a measuring instrument. The measuring instrument may first acquire a fully-averaged reference spectral noise density trace and estimate corresponding reference statistical parameters. Based on the reference statistical parameters, the measuring instrument may construct a reference spectral noise density distribution. The measuring instrument may also acquire a fully-averaged sum spectral noise density trace and estimate corresponding sum statistical parameters. Based on the sum statistical parameters, the measuring instrument may construct a sum spectral noise density distribution. The measuring instrument may extract a spectral noise density distribution from the reference and sum distributions. The measuring instrument may also determine a confidence interval based on a desired confidence level.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: January 1, 2008
    Assignee: National Instruments Corporation
    Inventor: Mohamad A. Zeidan