Patents by Inventor Deepali Garg

Deepali Garg 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: 8145132
    Abstract: A method and apparatus for reducing frequency space from code space search is disclosed in a wireless network. The method and apparatus reduces the frequency space without compromising the probability of detection, so that user equipment can expedite system acquisition and reduce power consumption. To reduce the frequency space, the described aspects note that the power spectral density of the WCDMA signal is essentially flat within the channel bandwidth. By capturing in-phase quadrature samples and doing frequency domain analysis of the signal in bandwidth around the center frequency, to the described aspects can eliminate some channels from the WCDMA code space search during frequency scan.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: March 27, 2012
    Assignee: Qualcomm Incorporated
    Inventors: Messay Amerga, Vivek Chawla, Deepali Garg
  • Publication number: 20090131047
    Abstract: A method and apparatus for reducing frequency space from code space search is disclosed in a wireless network. The method and apparatus reduces the frequency space without compromising the probability of detection, so that user equipment can expedite system acquisition and reduce power consumption. To reduce the frequency space, the described aspects note that the power spectral density of the WCDMA signal is essentially flat within the channel bandwidth. By capturing in-phase quadrature samples and doing frequency domain analysis of the signal in bandwidth around the center frequency, to the described aspects can eliminate some channels from the WCDMA code space search during frequency scan.
    Type: Application
    Filed: September 17, 2008
    Publication date: May 21, 2009
    Applicant: QUALCOMM INCORPORATED
    Inventors: Messay Amerga, Vivek Chawla, Deepali Garg
  • Publication number: 20080117959
    Abstract: Techniques for selectively filtering a received signal in order to reduce false alarms in the detection of a synchronization signal are described. In one design, frequency characteristics of a received signal may be estimated. Large spectral peaks in the estimated frequency characteristics may be detected. Filter coefficients for a pseudo-whitening filter may then be derived based on the detected large spectral peaks. To derive these filter coefficients, a filter gain for each of multiple frequency bins may be set to a predetermined value if a large spectral peak is not detected or a value inversely related to the large spectral peak if detected. The filter gains for all frequency bins may be transformed to time domain and further processed to obtain the filter coefficients. The received signal may be filtered based on the filter coefficients to attenuate the large spectral peaks. The filtered signal may be processed to detect for the synchronization signal.
    Type: Application
    Filed: November 8, 2007
    Publication date: May 22, 2008
    Applicant: QUALCOMM INCORPORATED
    Inventors: Parvanthanathan Subrahmanya, Vivek Chawla, Deepali Garg