Patents by Inventor Jiahong Zeng

Jiahong Zeng 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: 9438352
    Abstract: The present invention discloses a QPSK signal conjugate relationship identification method and apparatus. The method includes: receiving a first binary sequence signal, using the first binary sequence signal to modulate an optical signal, and determining, within a first predetermined range, a first bias voltage in a QPSK modulator; receiving a second binary sequence signal, using the second binary sequence signal to modulate the optical signal, determining a second range within the first predetermined range according to the first bias voltage, and determining, within the second range, a second bias voltage in the QPSK modulator; and determining a conjugate relationship of the QPSK signal according to a value relationship between the first bias voltage and the second bias voltage. The present invention features low costs and a small component size.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: September 6, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Jiahong Zeng
  • Patent number: 9071355
    Abstract: A dynamic dispersion detecting method and apparatus are disclosed. The apparatus includes a tunable dispersion compensation module (101), a demodulator (102), a receiver (103), a partial band radio frequency power detecting unit (104), and an electrical signal ratio calculating unit (105). The method includes: demodulating a phase of a received optical signal; converting the demodulated optical signal into an electrical signal; sampling radio frequency power of the electrical signal to obtain an radio frequency signal; obtaining an electrical signal ratio of the radio frequency signal; and comparing a value of a currently detected electrical signal ratio with the values of the previously detected electrical signal ratios, tuning a dispersion compensation value according to a comparison result to find a peak electrical signal ratio, and obtaining a residual dispersion value of a system according to the peak electrical signal ratio.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: June 30, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Dezhong Yu, Fanming Meng, Junbo Xie, Yu Xu, Jiahong Zeng, Binlin Deng
  • Publication number: 20150132014
    Abstract: The present invention discloses a QPSK signal conjugate relationship identification method and apparatus. The method includes: receiving a first binary sequence signal, using the first binary sequence signal to modulate an optical signal, and determining, within a first predetermined range, a first bias voltage in a QPSK modulator; receiving a second binary sequence signal, using the second binary sequence signal to modulate the optical signal, determining a second range within the first predetermined range according to the first bias voltage, and determining, within the second range, a second bias voltage in the QPSK modulator; and determining a conjugate relationship of the QPSK signal according to a value relationship between the first bias voltage and the second bias voltage. The present invention features low costs and a small component size.
    Type: Application
    Filed: September 10, 2014
    Publication date: May 14, 2015
    Inventor: Jiahong Zeng
  • Publication number: 20120232819
    Abstract: A dynamic dispersion detecting method and apparatus are disclosed. The apparatus includes a tunable dispersion compensation module (101), a demodulator (102), a receiver (103), a partial band radio frequency power detecting unit (104), and an electrical signal ratio calculating unit (105). The method includes: demodulating a phase of a received optical signal; converting the demodulated optical signal into an electrical signal; sampling radio frequency power of the electrical signal to obtain an radio frequency signal; obtaining an electrical signal ratio of the radio frequency signal; and comparing a value of a currently detected electrical signal ratio with the values of the previously detected electrical signal ratios, tuning a dispersion compensation value according to a comparison result to find a peak electrical signal ratio, and obtaining a residual dispersion value of a system according to the peak electrical signal ratio.
    Type: Application
    Filed: May 21, 2012
    Publication date: September 13, 2012
    Applicant: Huawei Technologies, Co., Ltd.
    Inventors: Dezhong YU, Fanming Meng, Junbo Xie, Yu Xu, Jiahong Zeng, Binlin Deng