Patents by Inventor Lee Yong Tae

Lee Yong Tae 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).

  • Pre-distortion apparatus and method for recovering nonlinear distortion of high power amplifier
    Patent number: 7068980
    Abstract: A pre-distortion apparatus and method for recovering nonlinear distortion of a high power amplifier. The pre-distortion apparatus includes: a demodulator for demodulating a signal outputted from the high power amplifier, generating a demodulated signal; a first storage unit for storing the demodulated signal outputted from the demodulator; a second storage unit for storing a reference transmission signal outputted from a transmitter of a transmitting system; a digital signal processor for calculating a pre-distortion coefficient by comparing the demodulated signal and the reference transmission signal stored at the first storage unit and the second storage unit; and a third storage unit for storing the pre-distortion coefficient calculated at the digital signal processor.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: June 27, 2006
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae-Hyun Seo, Lee Yong Tae, Seung-Won Kim
  • Pre-distortion apparatus and method for recovering nonlinear distortion of high power amplifier
    Publication number: 20040203542
    Abstract: A pre-distortion apparatus and method for recovering nonlinear distortion of a high power amplifier. The pre-distortion apparatus includes: a demodulator for demodulating a signal outputted from the high power amplifier, generating a demodulated signal; a first storage unit for storing the demodulated signal outputted from the demodulator; a second storage unit for storing a reference transmission signal outputted from a transmitter of a transmitting system; a digital signal processor for calculating a pre-distortion coefficient by comparing the demodulated signal and the reference transmission signal stored at the first storage unit and the second storage unit; and a third storage unit for storing the pre-distortion coefficient calculated at the digital signal processor.
    Type: Application
    Filed: October 29, 2002
    Publication date: October 14, 2004
    Inventors: Jae-Hyun Seo, Lee Yong-Tae, Seung-Won Kim