Patents by Inventor Paul T. Yang

Paul T. Yang 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 multi-carrier modulation
    Patent number: 8537934
    Abstract: A method of compensating for carrier frequency and phase errors of a received multi-carrier modulated signal. The received multi-carrier signal including modulated carriers for transmitting known data and unmodulated carriers for error correction, comprising, time domain down converting the received multi-carrier signal to base-band to provide a down-converted signal, the down-converted signal including a plurality of modulated carriers for transmitting known data and unmodulated carriers for error correction. Sampling an unmodulated carrier of the down-converted signal to provide received data samples. Providing a reference signal derived from the unmodulated carrier of the down-converted signal. And, estimating phase errors from a phase difference between the ummodulated carrier and the reference signal derived from the unmodulated carrier of the down-converted signal to provide a plurality of received sample phase error estimates for each modulated carrier.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: September 17, 2013
    Assignee: Broadcom Corporation
    Inventors: Robindra B. Joshi, Jeffrey S. Putnam, Thuji S. Lin, Paul T. Yang
  • System and method for multi-carrier modulation
    Patent number: 7010062
    Abstract: A method of compensating for carrier frequency and phase errors of a received multi-carrier modulated signal. The received multi-carrier signal including modulated carriers for transmitting known data and unmodulated carriers for error correction, comprising, time domain down converting the received multi-carrier signal to base-band to provide a down-converted signal, the down-converted signal including a plurality of modulated carriers for transmitting known data and unmodulated carriers for error correction. Sampling an unmodulated carrier of the down-converted signal to provide received data samples. Providing a reference signal derived from the unmodulated carrier of the down-converted signal. And, estimating phase errors from a phase difference between the ummodulated carrier and the reference signal derived from the unmodulated carrier of the down-converted signal to provide a plurality of received sample phase error estimates for each modulated carrier.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: March 7, 2006
    Assignee: Broadcom Corporation
    Inventors: Robindra B. Joshi, Jeffrey S. Putnam, Thuji S. Lin, Paul T. Yang
  • System and method for multi-carrier modulation
    Publication number: 20020064240
    Abstract: A method of compensating for carrier frequency and phase errors of a received multi-carrier modulated signal. The received multi-carrier signal including modulated carriers for transmitting known data and unmodulated carriers for error correction, comprising, time domain down converting the received multi-carrier signal to base-band to provide a down-converted signal, the down-converted signal including a plurality of modulated carriers for transmitting known data and unmodulated carriers for error correction. Sampling an unmodulated carrier of the down-converted signal to provide received data samples. Providing a reference signal derived from the unmodulated carrier of the down-converted signal. And, estimating phase errors from a phase difference between the ummodulated carrier and the reference signal derived from the unmodulated carrier of the down-converted signal to provide a plurality of received sample phase error estimates for each modulated carrier.
    Type: Application
    Filed: April 4, 2001
    Publication date: May 30, 2002
    Inventors: Robindra B. Joshi, Jeffrey S. Putnam, Thuji S. Lin, Paul T. Yang
  • MSK spread-spectrum receiver which allows CDMA operations
    Patent number: 5963585
    Abstract: A method for demodulating a received spread-spectrum signal using a minimum-shift-keyed (MSK) receiver. Using the method, an in-phase-component and a quadrature-phase-component of the received spread-spectrum signal are processed and combined in such a way as to estimate data of the received-spread-spectrum signal.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: October 5, 1999
    Assignee: P-Com, Inc.
    Inventors: Jimmy K. Omura, Paul T. Yang, Gurgen H. Khachatrian, Karen M. Nikogossian, Karen S. Hovakimian, Armen L. Vartapetian
  • MSK spread-spectrum receiver which allows CDMA operations
    Patent number: 5825810
    Abstract: A method for demodulating a received spread-spectrum signal using a minimum-shift-keyed (MSK) receiver. Using the method, an in-phase-component signal and a quadrature-phase-component signal are generated from a received spread-spectrum signal. The in-phase-component signal and the quadrature-phase-component signal are then processed and combined in such a way as to estimate data of the received-spread-spectrum signal.
    Type: Grant
    Filed: November 29, 1996
    Date of Patent: October 20, 1998
    Assignee: Cylink Corporation
    Inventors: Jimmy K. Omura, Paul T. Yang, Gurgen H. Khachatrian, Karen M. Nikogossian, Karen S. Hovakimian, Armen L. Vartapetian
  • MSK spread-spectrum receiver which allows CDMA operations
    Patent number: 5592506
    Abstract: A method for demodulating a received spread-spectrum signal using a minimum-shift-keyed (MSK) receiver. Using the method, an in-phase-component signal and a quadrature-phase-component signal are generated from a received spread-spectrum signal. The in-phase-component signal and the quadrature-phase-component signal are then processed and combined in such a way as to estimate data of the received-spread-spectrum signal.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: January 7, 1997
    Assignee: Cylink Corporation
    Inventors: Jimmy K. Omura, Paul T. Yang, Gurgen H. Khachatrian, Karen M. Nikogossian, Karen S. Hovakimian, Armen L. Vartapetian