Patents by Inventor Biqiang Luo

Biqiang Luo 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).

  • Systems and methods for frequency synchronization between transmitters and receivers in a communication system
    Patent number: 9912512
    Abstract: Systems and methods which provide training sequence or preamble-based synchronization with respect to non-coherent modulated signals and/or differentially coherent modulated signals are described. Embodiments provide for time synchronization using a technique for mitigating the effect of carrier frequency offset (CFO) with respect to the received signal. Embodiments of the present invention provide for frequency synchronization using a technique for estimating CFO using a constant bias induced with respect to the received signal by CFO. Additionally or alternatively, embodiments of the present invention provide for frequency synchronization using a technique for estimating CFO using phase rotation caused by CFO. The time synchronization and frequency synchronization of embodiments may be performed independently, without requiring the results of one synchronization operation for performing the other synchronization operation.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: March 6, 2018
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Shaohua Zhao, Wuxue Ni, Biqiang Luo, Li Li
  • SYSTEMS AND METHODS FOR FREQUENCY SYNCHRONIZATION BETWEEN TRANSMITTERS AND RECEIVERS IN A COMMUNICATION SYSTEM
    Publication number: 20170257248
    Abstract: Systems and methods which provide training sequence or preamble-based synchronization with respect to non-coherent modulated signals and/or differentially coherent modulated signals are described. Embodiments provide for time synchronization using a technique for mitigating the effect of carrier frequency offset (CFO) with respect to the received signal. Embodiments of the present invention provide for frequency synchronization using a technique for estimating CFO using a constant bias induced with respect to the received signal by CFO. Additionally or alternatively, embodiments of the present invention provide for frequency synchronization using a technique for estimating CFO using phase rotation caused by CFO. The time synchronization and frequency synchronization of embodiments may be performed independently, without requiring the results of one synchronization operation for performing the other synchronization operation.
    Type: Application
    Filed: March 7, 2016
    Publication date: September 7, 2017
    Inventors: Shaohua Zhao, Wuxue Ni, Biqiang Luo, Li Li