Patents by Inventor Xue-Jian Liao

Xue-Jian Liao 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 adjusting reference frequency
    Patent number: 8289945
    Abstract: The invention discloses a method for adjusting a reference frequency. First, a training signal is received based on the reference frequency. Then, a target region of the training signal is divided by an original training sequence so that a quotient polynomial is generated. Afterward, the quotient polynomial is divided by a predetermined polynomial so that a remainder polynomial is generated. Finally, the reference frequency is adjusted based on the remainder polynomial.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: October 16, 2012
    Assignee: Qisda Corporation
    Inventors: Xue-Jian Liao, Kuo-Chuan Lin
  • Method and apparatus for acquiring frequency of multi-path signal
    Patent number: 8050341
    Abstract: A method and an apparatus for acquiring a target frequency of a multi-path signal are disclosed. The multi-path signal includes a first path signal and a second path signal. First, the first path signal is received through a first path and the second path signal is received through a second path. Then, a target region is determined. The target region is a portion of a second cyclic prefix in the second path signal which overlaps with a first cyclic prefix in the first path signal. Afterward, the target frequency is determined based on the target region.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: November 1, 2011
    Assignee: Qlsda Corporation
    Inventors: Xue-Jian Liao, Kuo-Chuan Lin
  • METHOD AND APPARATUS FOR ADJUSTING REFERENCE FREQUENCY
    Publication number: 20080307023
    Abstract: The invention discloses a method for adjusting a reference frequency. First, a training signal is received based on the reference frequency. Then, a target region of the training signal is divided by an original training sequence so that a quotient polynomial is generated. Afterward, the quotient polynomial is divided by a predetermined polynomial so that a remainder polynomial is generated. Finally, the reference frequency is adjusted based on the remainder polynomial.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 11, 2008
    Inventors: Xue-Jian Liao, Kuo-Chuan Lin
  • METHOD AND APPARATUS FOR ACQUIRING FREQUENCY OF MULTI-PATH SIGNAL
    Publication number: 20080267305
    Abstract: A method and an apparatus for acquiring a target frequency of a multi-path signal are disclosed. The multi-path signal includes a first path signal and a second path signal. First, the first path signal is received through a first path and the second path signal is received through a second path. Then, a target region is determined. The target region is a portion of a second cyclic prefix in the second path signal which overlaps with a first cyclic prefix in the first path signal. Afterward, the target frequency is determined based on the target region.
    Type: Application
    Filed: April 25, 2008
    Publication date: October 30, 2008
    Inventors: Xue-Jian Liao, Kuo-Chuan Lin