Patents by Inventor Irfan Mahmood

Irfan Mahmood 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).

  • Digital demodulator, a telecommunications receiver, and a method of digital demodulation
    Patent number: 7164730
    Abstract: A digital demodulator comprises means (14) to perform a complex frequency shift operation on the received signal so as to provide a first signal at an intermediate frequency of one quarter of the sampling frequency. The digital demodulator also comprises a quadrature down converter (22) operative to down convert the first signal so as to provide an output signal at baseband.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: January 16, 2007
    Assignee: Lucent Technologies Inc.
    Inventors: Michelle Lillian Key, Irfan Mahmood, David John Wedge
  • Digital demodulator, a telecommunications receiver, and a method of digital demodulation
    Publication number: 20030091128
    Abstract: A digital demodulator comprises means (14) to perform a complex frequency shift operation on the received signal so as to provide a first signal at an intermediate frequency of one quarter of the sampling frequency. The digital demodulator also comprises a quadrature down converter (22) operative to down convert the first signal so as to provide an output signal at baseband.
    Type: Application
    Filed: November 7, 2002
    Publication date: May 15, 2003
    Inventors: Michelle Lillian Key, Irfan Mahmood, David John Wedge