Patents by Inventor Sharif Sazzad

Sharif Sazzad 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).

  • NOISE POWER ESTIMATION IN DIGITAL COMMUNICATIONS SYSTEMS WITH FAST FADING CHANNELS
    Publication number: 20160028423
    Abstract: An accurate and fast method for estimation of noise power in digital communication systems is presented. Exemplary embodiments of the present invention do not rely upon the need for embedding reference sequences in the transmitted data. Accordingly, such exemplary embodiments are especially suited for tracking variations of noise power in digital communication systems with fast fading channels.
    Type: Application
    Filed: March 18, 2014
    Publication date: January 28, 2016
    Inventors: Sharif Sazzad, Carl Scarpa, Edward Schell
  • Systems and methods for antenna diversity combining for satellite radio signals
    Patent number: 7742750
    Abstract: Systems and methods are presented for digital antenna diversity combining. In exemplary embodiments of the present invention, at least two antenna signal paths can be communicably connected to a receiver. Each antenna signal path can be provided with an RF tuner communicably connected to a demodulator, which can estimate the signal to noise ratio (SNR) and time of arrival of its respective antenna signal. In exemplary embodiments of the present invention, a time alignment circuit can be communicably connected to each antenna signal path, and a maximum ratio combiner can be communicably connected to the time alignment circuit. In operation, the time alignment circuit can use the time of arrival estimate to align the multiple signals and the maximum ratio combiner can use the SNR estimate obtained for each antenna signal to respectively weight each signal and thereby generate a combined output signal.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: June 22, 2010
    Assignee: Sirius XM Radio Inc.
    Inventors: Carl Scarpa, Sharif Sazzad, Christopher Strolle
  • Systems and methods for antenna diversity combining for satellite radio signals
    Publication number: 20070142009
    Abstract: Systems and methods are presented for digital antenna diversity combining. In exemplary embodiments of the present invention, at least two antenna signal paths can be communicably connected to a receiver. Each antenna signal path can be provided with an RF tuner communicably connected to a demodulator, which can estimate the signal to noise ratio (SNR) and time of arrival of its respective antenna signal. In exemplary embodiments of the present invention, a time alignment circuit can be communicably connected to each antenna signal path, and a maximum ratio combiner can be communicably connected to the time alignment circuit. In operation, the time alignment circuit can use the time of arrival estimate to align the multiple signals and the maximum ratio combiner can use the SNR estimate obtained for each antenna signal to respectively weight each signal and thereby generate a combined output signal.
    Type: Application
    Filed: December 1, 2006
    Publication date: June 21, 2007
    Applicant: Sirius Satellite Radio, Inc.
    Inventors: Carl Scarpa, Sharif Sazzad, Christopher Strolle