Patents by Inventor Khishigbayer Dushchuluun

Khishigbayer Dushchuluun 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).

  • Method for dividing the bit rate of QPSK signals into two or several subchannels
    Patent number: 7515645
    Abstract: The invention relates to a method for dividing the bit rate of QPSK signals by splitting the spectrum of said QPSK signals into at least two channels having band-limited filters in the modulator and demodulator. The prefiltered QPSK signal is split into at least one real and at least one imaginary spectrum at the transmitter end, is transmitted in frequency multiplex, and the filters in the modulator of the transmitter and the demodulator of the receiver are dimensioned according to the transmission function.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: April 7, 2009
    Assignee: Interessengemeinschaft für Runfunkschutzrechte GmbH Schutzrechtsverwertung & Co. KG
    Inventors: Willmut Zschunke, Khishigbayer Dushchuluun
  • Method for dividing the bit rate of qpsk signals into two or several subchannels
    Publication number: 20060056535
    Abstract: The invention relates to a method for dividing the bit rate of QPSK signals by splitting the spectrum of said QPSK signals into at least two channels having band-limited filters in the modulator and demodulator. The prefiltered QPSK signal is split into at least one real and at least one imaginary spectrum at the transmitter end, is transmitted in frequency multiplex, and the filters in the modulator of the transmitter and the demodulator of the receiver are dimensioned according to the transmission function.
    Type: Application
    Filed: July 29, 2003
    Publication date: March 16, 2006
    Inventors: Willmut Zschunke, Khishigbayer Dushchuluun