Patents by Inventor Vish Nandlall

Vish Nandlall 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).

  • Channel estimation method and system for inter-carrier interference-limited wireless communication network
    Patent number: 8483338
    Abstract: A method and system for wireless communication channel estimation. A frequency offset hypothesis is determined. An interchannel interference (“ICI”) matrix based on the frequency offset hypothesis is generated. Pilot channel estimates based on the ICI matrix are obtained. A correlation error of the pilot channel estimates to the frequency offset hypothesis is calculated. The correlation error is compared with a predetermined correlation error value. The frequency offset hypothesis is updated and the aforementioned steps are iteratively repeated if the correlation error is greater than the predetermined correlation error value. The pilot channel estimates are used to estimate the wireless communication channel.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: July 9, 2013
    Assignee: Apple Inc.
    Inventors: John P. Panicker, Gary D. Boudreau, Neil McGowan, Vish Nandlall
  • CHANNEL ESTIMATION METHOD AND SYSTEM FOR INTER-CARRIER INTERFERENCE-LIMITED WIRELESS COMMUNICATION NETWORK
    Publication number: 20130022158
    Abstract: A method and system for wireless communication channel estimation. A frequency offset hypothesis is determined. An interchannel interference (“ICI”) matrix based on the frequency offset hypothesis is generated. Pilot channel estimates based on the ICI matrix are obtained. A correlation error of the pilot channel estimates to the frequency offset hypothesis is calculated. The correlation error is compared with a predetermined correlation error value. The frequency offset hypothesis is updated and the aforementioned steps are iteratively repeated if the correlation error is greater than the predetermined correlation error value. The pilot channel estimates are used to estimate the wireless communication channel.
    Type: Application
    Filed: August 16, 2012
    Publication date: January 24, 2013
    Inventors: John P. PANICKER, Gary D. BOUDREAU, Neil McGOWAN, Vish NANDLALL
  • Channel estimation method and system for inter-carrier interference-limited wireless communication network
    Patent number: 8270547
    Abstract: A method and system for wireless communication channel estimation. A frequency offset hypothesis is determined. An interchannel interference (“ICI”) matrix based on the frequency offset hypothesis is generated. Pilot channel estimates based on the ICI matrix are obtained. A correlation error of the pilot channel estimates to the frequency offset hypothesis is calculated. The correlation error is compared with a predetermined correlation error value. The frequency offset hypothesis is updated and the aforementioned steps are iteratively repeated if the correlation error is greater than the predetermined correlation error value. The pilot channel estimates are used to estimate the wireless communication channel.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: September 18, 2012
    Assignee: Apple Inc.
    Inventors: John P. Panicker, Gary D. Boudreau, Neil McGowan, Vish Nandlall
  • CHANNEL ESTIMATION METHOD AND SYSTEM FOR INTER-CARRIER INTERFERENCE-LIMITED WIRELESS COMMUNICATION NETWORK
    Publication number: 20100278288
    Abstract: A method and system for wireless communication channel estimation. A frequency offset hypothesis is determined. An interchannel interference (“ICI”) matrix based on the frequency offset hypothesis is generated. Pilot channel estimates based on the ICI matrix are obtained. A correlation error of the pilot channel estimates to the frequency offset hypothesis is calculated. The correlation error is compared with a predetermined correlation error value. The frequency offset hypothesis is updated and the aforementioned steps are iteratively repeated if the correlation error is greater than the predetermined correlation error value. The pilot channel estimates are used to estimate the wireless communication channel.
    Type: Application
    Filed: December 11, 2008
    Publication date: November 4, 2010
    Applicant: NORTEL NETWORKS LIMITED
    Inventors: John P. Panicker, Gary D. Boudreau, Neil McGowan, Vish Nandlall