Patents by Inventor Sinja Brandes

Sinja Brandes 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: 8379780
    Abstract: A method for compensation of information losses caused by blanking out pulse-shaped interferences in a communication signal, wherein a receiver receives a modulated OFDM-based signal comprising an overlap of a sequence of a predetermined number of subcarrier signals whose frequencies differ by a constant amount and which have substantially no signal portions at the frequencies of the respective other subcarrier signals, and pulse-shaped interference signals. The pulse-shaped interference signals are eliminated by pulse blanking. The obtained signal in the frequency domain is characterized in that the signal portions at each subcarrier frequency consist of an overlap of determinable signal portions respectively of all other subcarrier signals.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: February 19, 2013
    Assignee: Deutsches Zentrum für Luft- und Raumfahrt e.V.
    Inventors: Michael Schnell, Sinja Brandes
  • Patent number: 7864873
    Abstract: The invention relates to N subcarriers of an OFDM communication system or OFDM based multi-carrier communication system M subcarriers used as cancellation subcarriers to achieve side lobe suppression of the OFDM transmission signal, where M<N. The M cancellation subcarriers are scaled with a generally complex weighting factor. Determining the weighting factor is performed in accordance with a suitable optimization criterion. Application in OFDM-based wireless and wired communication systems.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: January 4, 2011
    Assignee: Deutsches Zentrum für Luft- und Raumfahrt e. V.
    Inventors: Michael Schnell, Sinja Brandes
  • Patent number: 7693118
    Abstract: The subcarriers in an OFDM communication system or OFDM-based multicarrier communication system are multiplied with weighting factors, determined so that in accordance with an optimization criterion the side lobes are minimized in a determined frequency domain. In determining the weighting factors constraints can be taken into account to further boost system power output.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: April 6, 2010
    Assignee: Deutsches Zentrum für Luft- und Raumfahrt e. V.
    Inventors: Ivan Cosovic, Sinja Brandes, Michael Schnell
  • Publication number: 20100008454
    Abstract: A method for compensation of information losses caused by blanking out pulse-shaped interferences in a communication signal, wherein a receiver receives a modulated OFDM-based signal comprising an overlap of a sequence of a predetermined number of subcarrier signals whose frequencies differ by a constant amount and which have substantially no signal portions at the frequencies of the respective other subcarrier signals, and pulse-shaped interference signals. The pulse-shaped interference signals are eliminated by pulse blanking. The obtained signal in the frequency domain is characterized in that the signal portions at each subcarrier frequency consist of an overlap of determinable signal portions respectively of all other subcarrier signals.
    Type: Application
    Filed: July 10, 2009
    Publication date: January 14, 2010
    Inventors: Michael Schnell, Sinja Brandes
  • Publication number: 20060133261
    Abstract: The subcarriers in an OFDM communication system or OFDM-based multicarrier communication system are multiplied with weighting factors, determined so that in accordance with an optimization criterion the side lobes are minimized in a determined frequency domain. In determining the weighting factors constraints can be taken into account to further boost system power output.
    Type: Application
    Filed: October 12, 2005
    Publication date: June 22, 2006
    Inventors: Ivan Cosovic, Sinja Brandes, Michael Schnell
  • Publication number: 20060077885
    Abstract: Of N subcarriers of an OFDM communication system or OFDM based multi-carrier communication system M subcarriers are used as cancellation subcarriers to achieve side lobe suppression of the OFDM transmission signal, where M<N. The M cancellation subcarriers are scaled with a generally complex weighting factor. Determining the weighting factor is performed in accordance with a suitable optimization criterion. Application in OFDM-based wireless and wired communication systems.
    Type: Application
    Filed: October 12, 2005
    Publication date: April 13, 2006
    Inventors: Michael Schnell, Sinja Brandes