Patents by Inventor Zhao Xueyuan

Zhao Xueyuan 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).

  • Accurate channel quality indicator for link adaptation of MIMO communication systems
    Patent number: 7778340
    Abstract: A method for performing link adaptation in a Multiple Input Multiple Output (MIMO) system comprises: receiving a signal at a receiving unit of the MIMO system, calculating channel state information (CSI) from the received signal, and calculating a plurality of values of a parameter from the CSI, the parameter mapping to an error rate of the system, the mapping being substantially one-to-one within a range of interest of the error rate, each one of the calculated values corresponding to one of a plurality of Modulation Coding Schemes (MCSs).
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: August 17, 2010
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Pan Zhengang, Chan Wingchau, Zhao Xueyuan, Lo Chiming, Nejib Boubaker
  • Estimation of Error Propagation Probability to Improve Performance of Decision-Feedback Based Systems
    Publication number: 20090238255
    Abstract: A decision feedback-based communication system comprising a unit for computing an estimated Error Propagation Probability (EPP) for a plurality of received signals, and a unit for receiving the EPP estimation and improving detected signal quality based thereon. The system can be a coded system or an uncoded system.
    Type: Application
    Filed: March 24, 2008
    Publication date: September 24, 2009
    Applicant: Hong Kong Applied Science and Technology Research Institute Co, Ltd.
    Inventors: Chan Wing Chau, Zhao Xueyuan, Pan Zhengang, Lo Chi Ming, Derek Lee
  • Accurate Channel Quality Indicator for Link Adaptation of MIMO Communication Systems
    Publication number: 20090067557
    Abstract: A method for performing link adaptation in a Multiple Input Multiple Output (MIMO) system comprises: receiving a signal at a receiving unit of the MIMO system, calculating channel state information (CSI) from the received signal, and calculating a plurality of values of a parameter from the CSI, the parameter mapping to an error rate of the system, the mapping being substantially one-to-one within a range of interest of the error rate, each one of the calculated values corresponding to one of a plurality of Modulation Coding Schemes (MCSs).
    Type: Application
    Filed: September 6, 2007
    Publication date: March 12, 2009
    Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Pan Zhengang, Chan Wingchau, Zhao Xueyuan, Lo Chiming, Nejib Boubaker