Patents by Inventor John Puthen Panicker

John Puthen Panicker 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).

  • System and method for channel estimation
    Patent number: 8520781
    Abstract: A method for channel estimation includes receiving data at a number of frequency intervals in a frequency band over a number of first time intervals. A first set of channel estimates is determined for each pilot symbol within the data over a second time interval comprising at least one first time interval, and time-direction interpolation is performed to determine a second set of channel estimates for a number of data portions in a frequency interval using the first set of channel estimates. The frequency interval comprises a data portion comprising a pilot symbol. Frequency-direction interpolation is performed to determine a third set of channel estimates for each first time interval. The time-direction interpolation and the frequency-direction interpolation can be performed in reverse order with the channel estimates generated by the frequency-direction interpolation being used as inputs for time-direction interpolation.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: August 27, 2013
    Assignee: BlackBerry Limited
    Inventors: Jianfeng Weng, Jason Robert Duggan, Edgar Filiberto Velez, Martin Kosakowski, John Puthen Panicker
  • SYSTEM AND METHOD FOR CHANNEL ESTIMATION
    Publication number: 20120027140
    Abstract: A method for channel estimation includes receiving data at a number of frequency intervals in a frequency band over a number of first time intervals. A first set of channel estimates is determined for each pilot symbol within the data over a second time interval comprising at least one first time interval, and time-direction interpolation is performed to determine a second set of channel estimates for a number of data portions in a frequency interval using the first set of channel estimates. The frequency interval comprises a data portion comprising a pilot symbol. Frequency-direction interpolation is performed to determine a third set of channel estimates for each first time interval. The time-direction interpolation and the frequency-direction interpolation can be performed in reverse order with the channel estimates generated by the frequency-direction interpolation being used as inputs for time-direction interpolation.
    Type: Application
    Filed: July 29, 2010
    Publication date: February 2, 2012
    Inventors: Jianfeng Weng, Jason Robert Duggan, Edgar Filiberto Velez, Martin Kosakowski, John Puthen Panicker