Patents by Inventor Dung-Huy Han

Dung-Huy Han 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).

  • Transmitter compensation in decoding of intensity modulated optical OFDM with direct detection
    Patent number: 8699640
    Abstract: A method by an optical OFDM receiver includes converting a received optical signal to an electrical signal, deriving a digital signal from the electrical signal, and emulating, with an iterative OFDM demodulator responsive to the digital signal, a transmitter effect in the received signal of lower peak clipping and top peak distortion and applying the transmitter effect to the received signal and a decision-made signal for estimating an error function to be applied to a demodulation of the received optical signal.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: April 15, 2014
    Assignee: NEC Laboratories America, Inc.
    Inventors: Junqiang Hu, Dung-Huy Han, Ting Wang
  • TRANSMITTER COMPENSATION IN DECODING OF INTENSITY MODULATED OPTICAL OFDM WITH DIRECT DETECTION
    Publication number: 20100142637
    Abstract: A method by an optical OFDM receiver includes converting a received optical signal to an electrical signal, deriving a digital signal from the electrical signal, and emulating, with an iterative OFDM demodulator responsive to the digital signal, a transmitter effect in the received signal of lower peak clipping and top peak distortion and applying the transmitter effect to the received signal and a decision-made signal for estimating an error function to be applied to a demodulation of the received optical signal.
    Type: Application
    Filed: December 3, 2009
    Publication date: June 10, 2010
    Applicant: NEC LABORATORIES AMERICA, INC.
    Inventors: Junqiang Hu, Dung-Huy Han, Ting Wang