Patents by Inventor Syed Zeeshan Ismail

Syed Zeeshan Ismail 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).

  • Method and apparatus for identifying channel bandwidth and channel offset of an orthogonal frequency division multiplexing signal
    Patent number: 9537702
    Abstract: Methods, apparatuses and systems for identifying a channel bandwidth and channel offset of an orthogonal frequency division multiplexing (OFDM) signal. The OFDM signal is received by a receiver apparatus that may be tuned to RF bandwidth of 20 MHz, 40 MHz or 80 MHz. The method utilized by the apparatus includes identifying the location of the primary channel and subsequently determining a sequence of equalized frequency domain sub-symbols of the signal field in the lower and the upper frequency band. Further, a cross-correlation between the sequence of equalized frequency domain sub-symbols is computed along with the computing energy of the sequence of equalized frequency domain sub-symbols. Finally, the cross-correlation and the computed energy are compared for identifying the channel offset and the channel bandwidth.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: January 3, 2017
    Assignee: Uurmi Systems Private Limited
    Inventors: Nanda Kishore Chavali, Syed Zeeshan Ismail
  • Method and Apparatus for Identifying Channel Bandwidth and Channel Offset of an Orthogonal Frequency Division Multiplexing Signal
    Publication number: 20160119174
    Abstract: Methods, apparatuses and systems for identifying a channel bandwidth and channel offset of an orthogonal frequency division multiplexing (OFDM) signal. The OFDM signal is received by a receiver apparatus that may be tuned to RF bandwidth of 20 MHz, 40 MHz or 80 MHz. The method utilized by the apparatus includes identifying the location of the primary channel and subsequently determining a sequence of equalized frequency domain sub-symbols of the signal field in the lower and the upper frequency band. Further, a cross-correlation between the sequence of equalized frequency domain sub-symbols is computed along with the computing energy of the sequence of equalized frequency domain sub-symbols. Finally, the cross-correlation and the computed energy are compared for identifying the channel offset and the channel bandwidth.
    Type: Application
    Filed: October 23, 2014
    Publication date: April 28, 2016
    Inventors: Nanda Kishore Chavali, Syed Zeeshan Ismail