Patents Assigned to Ultrabit Communications LLC
  • Quadrature modulation without carrier
    Patent number: 8731022
    Abstract: Transmitters, receivers and associated methods are disclosed for providing phase and amplitude modulation in a carrier-less communication system (e.g., an ultra-wide band communication system). An approximate quadrature signal is provided by delaying the in-phase signal by an amount determined by various criteria, such as the bandwidths of the component signals, minimizing the mean square error between an approximate quadrature signal and the true quadrature signal, and minimizing the auto-correlation function of the in-phase signal.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: May 20, 2014
    Assignee: Ultrabit Communications LLC
    Inventor: Stephan V. Schell
  • QUADRATURE MODULATION WITHOUT CARRIER
    Publication number: 20140016673
    Abstract: Transmitters, receivers and associated methods are disclosed for providing phase and amplitude modulation in a carrier-less communication system (e.g., an ultra-wide band communication system). An approximate quadrature signal is provided by delaying the in-phase signal by an amount determined by various criteria, such as the bandwidths of the component signals, minimizing the mean square error between an approximate quadrature signal and the true quadrature signal, and minimizing the auto-correlation function of the in-phase signal.
    Type: Application
    Filed: September 24, 2013
    Publication date: January 16, 2014
    Applicant: ULTRABIT COMMUNICATIONS LLC
    Inventor: Stephan V. Schell
  • Quadrature modulation without carrier
    Patent number: 8553806
    Abstract: Transmitters, receivers and associated methods are disclosed for providing phase and amplitude modulation in a carrier-less communication system (e.g., an ultra-wide band communication system). An approximate quadrature signal is provided by delaying the in-phase signal by an amount determined by various criteria, such as the bandwidths of the component signals, minimizing the mean square error between an approximate quadrature signal and the true quadrature signal, and minimizing the auto-correlation function of the in-phase signal.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: October 8, 2013
    Assignee: Ultrabit Communications LLC
    Inventor: Stephan V. Schell
  • QUADRATURE MODULATION WITHOUT CARRIER
    Publication number: 20110286496
    Abstract: Transmitters, receivers and associated methods are disclosed for providing phase and amplitude modulation in a carrier-less communication system (e.g., an ultra-wide band communication system). An approximate quadrature signal is provided by delaying the in-phase signal by an amount determined by various criteria, such as the bandwidths of the component signals, minimizing the mean square error between an approximate quadrature signal and the true quadrature signal, and minimizing the auto-correlation function of the in-phase signal.
    Type: Application
    Filed: May 20, 2011
    Publication date: November 24, 2011
    Applicant: ULTRABIT COMMUNICATIONS LLC
    Inventor: Stephan V. Schell
  • Quadrature modulation without carrier
    Patent number: 7953182
    Abstract: Transmitters, receivers and associated methods are disclosed for providing phase and amplitude modulation in a carrier-less communication system (e.g., an ultra-wide band communication system). An approximate quadrature signal is provided by delaying the in-phase signal by an amount determined by various criteria, such as the bandwidths of the component signals, minimizing the mean square error between an approximate quadrature signal and the true quadrature signal, and minimizing the auto-correlation function of the in-phase signal.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: May 31, 2011
    Assignee: Ultrabit Communications LLC
    Inventor: Stephan V. Schell