Patents by Inventor Cishuo Yan

Cishuo Yan 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 m-ary phase-shifting keying modulation
    Patent number: 7881618
    Abstract: System and method for m-ary phase shifting keying modulation. According to an embodiment, the present invention provides a method for performing m-ary phase-keying shift modulation. The method includes providing at least a first signal and a second signal by a signal source. The first signal and the second signal are characterized by a first signal strength level. The method also includes attenuating the second signal to provide a third signal. The second signal are characterized by a second signal strength level which is at approximate 50% of the first signal strength level. The method additionally includes coupling the first signal to a first bias voltage to provide a fourth signal. Furthermore, the method includes coupling the third signal to a second bias voltage to provide a fifth signal. The method also includes a step for providing a sixth signal by combing the fourth signal and the fifth signal.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: February 1, 2011
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Cishuo Yan, Xinyu Xu, Zhihui Tao
  • SYSTEM AND METHOD FOR M-ARY PHASE-SHIFTING KEYING MODULATION
    Publication number: 20080304598
    Abstract: System and method for m-ary phase shifting keying modulation. According to an embodiment, the present invention provides a method for performing m-ary phase-keying shift modulation. The method includes providing at least a first signal and a second signal by a signal source. The first signal and the second signal are characterized by a first signal strength level. The method also includes attenuating the second signal to provide a third signal. The second signal are characterized by a second signal strength level which is at approximate 50% of the first signal strength level. The method additionally includes coupling the first signal to a first bias voltage to provide a fourth signal. Furthermore, the method includes coupling the third signal to a second bias voltage to provide a fifth signal. The method also includes a step for providing a sixth signal by combing the fourth signal and the fifth signal.
    Type: Application
    Filed: June 7, 2007
    Publication date: December 11, 2008
    Applicants: Huawei Technologies Co., Ltd., Shanghai Jiao Tong University
    Inventors: Cishuo Yan, Xinyu Xu, Zhihui Tao