Patents by Inventor Yuelun Guo

Yuelun Guo 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).

  • Patent number: 8606189
    Abstract: A system and method for determining the presence of interfering signals in a wireless environment. A programmable RF card is programmed to collect a wideband signal based upon user requested signals of interest. Collected signals are analyzed and the presence of specific interfering signals is determined. The interfering signals are then tracked and reported.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: December 10, 2013
    Assignee: PCTEL, Inc.
    Inventor: Yuelun Guo
  • Patent number: 8588136
    Abstract: A system and method for SSS detection under carrier frequency offset in an orthogonal frequency-division multiple access (OFDMA) downlink channel. A processor receives a signal sample that includes a transmission on a primary synchronization signal (PSS) and a transmission on a one secondary synchronization signal (SSS). The processor determines a correlation “P” of a first symbol transmitted in the PSS of the signal sample to a first known symbol at each time “t” of time increments k of the signal sample and a correlation “S” of a second symbol transmitted in the a SSS to a second known symbol at each time t-.5/7 msecs. The processor receives a candidate phase rotation of ?i from a set of “i” candidates and determines a correlation “Cmax” over the time increments k representing a maximum amplitude of a combined correlation of S and P, with P rotated by ?i.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: November 19, 2013
    Assignee: PCTEL, Inc.
    Inventors: Wei Zha, Amir Soltanian, Yuelun Guo, Wei Lu
  • Patent number: 8532027
    Abstract: A system and method for SSS detection under carrier frequency offset in an orthogonal frequency-division multiple access (OFDMA) downlink channel. A processor receives a signal sample that includes a transmission on a primary synchronization signal (PSS) and a transmission on a one secondary synchronization signal (SSS). The processor determines a correlation “P” of a first symbol transmitted in the PSS of the signal sample to a first known symbol at each time “t” of time increments k of the signal sample and a correlation “S” of a second symbol transmitted in the a SSS to a second known symbol at each time t-.5/7 msecs. The processor receives a candidate phase rotation of ?i from a set of “i” candidates and determines a correlation “Cmax” over the time increments k representing a maximum amplitude of a combined correlation of S and P, with P rotated by ?i.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: September 10, 2013
    Assignee: PCTEL, Inc.
    Inventors: Wei Zha, Amir Soltanian, Yuelun Guo, Wei Lu
  • Publication number: 20120171966
    Abstract: A system and method for determining the presence of interfering signals in a wireless environment. A programmable RF card is programmed to collect a wideband signal based upon user requested signals of interest. Collected signals are analyzed and the presence of specific interfering signals is determined. The interfering signals are then tracked and reported.
    Type: Application
    Filed: January 4, 2011
    Publication date: July 5, 2012
    Applicant: PCTEL, Inc.
    Inventor: Yuelun Guo
  • Publication number: 20110255394
    Abstract: A system and method for SSS detection under carrier frequency offset in an orthogonal frequency-division multiple access (OFDMA) downlink channel. A processor receives a signal sample that includes a transmission on a primary synchronization signal (PSS) and a transmission on a one secondary synchronization signal (SSS). The processor determines a correlation “P” of a first symbol transmitted in the PSS of the signal sample to a first known symbol at each time “t” of time increments k of the signal sample and a correlation “S” of a second symbol transmitted in the a SSS to a second known symbol at each time t-.5/7msecs. The processor receives a candidate phase rotation of ?i from a set of “i” candidates and determines a correlation “Cmax” over the time increments k representing a maximum amplitude of a combined correlation of S and P, with P rotated by ?i.
    Type: Application
    Filed: April 20, 2010
    Publication date: October 20, 2011
    Inventors: Wei Zha, Amir Soltanian, Yuelun Guo, Wei Lu