Patents by Inventor Srikrishna Bhashyam

Srikrishna Bhashyam 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 and channel estimation using low spreading factors
    Patent number: 8514909
    Abstract: Noise measurements are made within a fraction of a single symbol period of a longest orthogonal code symbol. A control processor identifies an unoccupied code having a spreading factor that is less than a longest spreading factor for the system. A despreader measures symbol energy based on the unoccupied code and a noise estimator generates noise estimations based on the measured symbol energies. The subscriber station uses similar techniques in order to perform channel estimations within a period that is a fraction of a symbol period of a longest-spreading-factor code.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: August 20, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Da-Shan Shiu, Durga Malladi Prasad, Srikrishna Bhashyam
  • Noise and channel estimation using low spreading factors
    Patent number: 8135056
    Abstract: Noise measurements are made within a fraction of a single symbol period of a longest orthogonal code symbol. A control processor identifies an unoccupied code having a spreading factor that is less than a longest spreading factor for the system. A despreader measures symbol energy based on the unoccupied code and a noise estimator generates noise estimations based on the measured symbol energies. The subscriber station uses similar techniques in order to perform channel estimations within a period that is a fraction of a symbol period of a longest-spreading-factor code.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: March 13, 2012
    Assignee: Qualcomm Incorporated
    Inventors: Da-shan Shiu, Durga Prasad Malladi, Srikrishna Bhashyam
  • NOISE AND CHANNEL ESTIMATION USING LOW SPREADING FACTORS
    Publication number: 20110158293
    Abstract: Noise measurements are made within a fraction of a single symbol period of a longest orthogonal code symbol. A control processor identifies an unoccupied code having a spreading factor that is less than a longest spreading factor for the system. A despreader measures symbol energy based on the unoccupied code and a noise estimator generates noise estimations based on the measured symbol energies.
    Type: Application
    Filed: March 11, 2011
    Publication date: June 30, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Da-Shan Shiu, Durga Prasad Malladi, Srikrishna Bhashyam
  • NOISE AND CHANNEL ESTIMATION USING LOW SPREADING FACTORS
    Publication number: 20080130731
    Abstract: Noise measurements are made within a fraction of a single symbol period of a longest orthogonal code symbol. A control processor identifies an unoccupied code having a spreading factor that is less than a longest spreading factor for the system. A despreader measures symbol energy based on the unoccupied code and a noise estimator generates noise estimations based on the measured symbol energies.
    Type: Application
    Filed: July 23, 2007
    Publication date: June 5, 2008
    Inventors: Da-shan Shiu, Durga P. Malladi, Srikrishna Bhashyam
  • Noise and channel estimation using low spreading factors
    Patent number: 7254170
    Abstract: Noise measurements are made within a fraction of a single symbol period of a longest orthogonal code symbol. A control processor identifies an unoccupied code having a spreading factor that is less than a longest spreading factor for the system. A despreader measures symbol energy based on the unoccupied code and a noise estimator generates noise estimations based on the measured symbol energies. The subscriber station uses similar techniques in order to perform channel estimations within a period that is a fraction of a symbol period of a longest-spreading-factor code.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: August 7, 2007
    Assignee: Qualcomm Incorporated
    Inventors: Da-shan Shiu, Durga P. Malladi, Srikrishna Bhashyam
  • Noise and channel estimation using low spreading factors
    Publication number: 20040091034
    Abstract: Noise measurements are made within a fraction of a single symbol period of a longest orthogonal code symbol. A control processor identifies an unoccupied code having a spreading factor that is less than a longest spreading factor for the system. A despreader measures symbol energy based on the unoccupied code and a noise estimator generates noise estimations based on the measured symbol energies.
    Type: Application
    Filed: November 7, 2002
    Publication date: May 13, 2004
    Inventors: Da-shan Shiu, Durga P. Malladi, Srikrishna Bhashyam