Patents by Inventor Arvind Lonkar

Arvind Lonkar 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 multicarrier channel estimation and synchronization using pilot sequences
    Patent number: 7450654
    Abstract: Method and apparatus for OFDM synchronization and channel estimation. In a temporal embodiment, received embedded system pilot symbols are inverse Fourier transformed at expected index locations and correlated with computed complex conjugates of inverse Fourier transforms of pilot symbols for providing a correlation function for the channel impulse response. In a frequency domain embodiment, embedded system pilot symbols are augmented with pilot-spaced inferred guard band symbols, multiplied by scaled complex conjugates of computed pilot systems, and inverse Fourier transformed into the channel impulse response. Time and frequency are synchronized in feedback loops from information in the channel impulse response. The channel impulse response is filtered, interpolated, and then Fourier transformed for determining channel estimates for equalization.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: November 11, 2008
    Assignee: Texas Instruments Incorporated
    Inventors: Manoneet Singh, Arvind Lonkar, Jerry Krinock
  • Method and Apparatus for Multicarrier Channel Estimation and Synchronization Using Pilot Sequences
    Publication number: 20060291578
    Abstract: Method and apparatus for OFDM synchronization and channel estimation. In a temporal embodiment, received embedded system pilot symbols are inverse Fourier transformed at expected index locations and correlated with computed complex conjugates of inverse Fourier transforms of pilot symbols for providing a correlation function for the channel impulse response. In a frequency domain embodiment, embedded system pilot symbols are augmented with pilot-spaced inferred guard band symbols, multiplied by scaled complex conjugates of computed pilot systems, and inverse Fourier transformed into the channel impulse response. Time and frequency are synchronized in feedback loops from information in the channel impulse response. The channel impulse response is filtered, interpolated, and then Fourier transformed for determining channel estimates for equalization.
    Type: Application
    Filed: August 15, 2006
    Publication date: December 28, 2006
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Manoneet Singh, Arvind Lonkar, Jerry Krinock
  • Method and apparatus for multicarrier channel estimation and synchronization using pilot sequences
    Patent number: 7139320
    Abstract: Method and apparatus for OFDM synchronization and channel estimation. In a temporal embodiment, received embedded system pilot symbols are inverse Fourier transformed at expected index locations and correlated with computed complex conjugates of inverse Fourier transforms of pilot symbols for providing a correlation function for the channel impulse response. In a frequency domain embodiment, embedded system pilot symbols are augmented with pilot-spaced inferred guard band symbols, multiplied by scaled complex conjugates of computed pilot systems, and inverse Fourier transformed into the channel impulse response. Time and frequency are synchronized in feedback loops from information in the channel impulse response. The channel impulse response is filtered, interpolated, and then Fourier transformed for determining channel estimates for equalization.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: November 21, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: Manoneet Singh, Arvind Lonkar, Jerry Krinock