Patents by Inventor Uwe Dettmar

Uwe Dettmar 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: 7760834
    Abstract: A method and a device of providing timing information within a wireless communication system is described. The timing information is extracted from a received transmit signal. The inventive method comprises the steps of providing a training signal on the receiver side relating to a known signal portion of the transmit signal, scaling the training signal, quantizing the scaled training signal, correlating one or more parts of the received transmit signal with the scaled training signal to obtain one or more correlation results, and determining the timing information on the basis of the correlation results.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: July 20, 2010
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fabian Wenger, Uwe Dettmar, Udo Wachsmann, Peter Schramm
  • Patent number: 7729460
    Abstract: A method and a device of providing timing information within a wireless communication system is described. The timing information is extracted from a received transmit signal. The inventive method comprises the steps of providing a training signal on the receiver side relating to a known signal portion of the transmit signal, scaling the training signal, quantizing the scaled training signal, correlating one or more parts of the received transmit signal with the scaled training signal to obtain one or more correlation results, and determining the timing information on the basis of the correlation results.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: June 1, 2010
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fabian Wenger, Uwe Dettmar, Udo Wachsmann, Peter Schramm
  • Publication number: 20090052598
    Abstract: A method and a device of providing timing information within a wireless communication system is described. The timing information is extracted from a received transmit signal. The inventive method comprises the steps of providing a training signal on the receiver side relating to a known signal portion of the transmit signal, scaling the training signal, quantizing the scaled training signal, correlating one or more parts of the received transmit signal with the scaled training signal to obtain one or more correlation results, and determining the timing information on the basis of the correlation results.
    Type: Application
    Filed: December 12, 2007
    Publication date: February 26, 2009
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fabian WENGER, Uwe Dettmar, Udo Wachsmann, Peter Schramm
  • Publication number: 20090034667
    Abstract: A method and a device of providing timing information within a wireless communication system is described. The timing information is extracted from a received transmit signal. The inventive method comprises the steps of providing a training signal on the receiver side relating to a known signal portion of the transmit signal, scaling the training signal, quantizing the scaled training signal, correlating one or more parts of the received transmit signal with the scaled training signal to obtain one or more correlation results, and determining the timing information on the basis of the correlation results.
    Type: Application
    Filed: December 12, 2007
    Publication date: February 5, 2009
    Applicant: Telefonaktiebolaget LM Ericsson (publ),
    Inventors: Fabian WENGER, Uwe Dettmar, Udo Wachsmann, Peter Schramm
  • Patent number: 7327817
    Abstract: A method and a device of providing timing information within a wireless communication system is described. The timing information is extracted from a received transmit signal. The inventive method comprises the steps of providing a training signal on the receiver side relating to a known signal portion of the transmit signal, scaling the training signal, quantizing the scaled training signal, correlating one or more parts of the received transmit signal with the scaled training signal to obtain one or more correlation results, and determining the timing information on the basis of the correlation results.
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: February 5, 2008
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fabian Wenger, Uwe Dettmar, Udo Wachsmann, Peter Schramm
  • Patent number: 7009932
    Abstract: A frequency tracking device (FTD) in particular for use in a OFDM communication system comprises a selector (SEL) which selects on the basis of N channel coefficients (Cest) a number M of subcarriers corresponding to the M channel coefficients (Cest) having the largest absolute values. An evaluator (EVAL) of the frequency tracking device (FTD) determines a frequency deviation estimate (foff,est) on the basis of the selected M subcarriers and the selected M channel coefficients. In addition to or instead of a feedback correction unit (CORR1) provided upstream of a multi-carrier filter bank (8; FFT), the frequency tracking device (FTD) can also comprise a feed forward correction unit (CORR2) provided downstream of the receiver multi-carrier filter bank (8).
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: March 7, 2006
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kirsten Matheus, Udo Wachsmann, Uwe Dettmar
  • Patent number: 6807154
    Abstract: A TDMA/TDD link adaptation method determines radio link quality at a base station. The radio link quality is used to update and broadcast a physical layer parameter indicator (10-16) from the base station on a broadcast control channel having a common physical layer parameter indicator for all uplink and downlink channels.
    Type: Grant
    Filed: October 11, 1999
    Date of Patent: October 19, 2004
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Göran Malmgren, Jamshid Khun-Jush, Hui Li, Uwe Dettmar, Peter Schramm, Jörn Thielecke, Udo Wachsmann
  • Publication number: 20040180666
    Abstract: A method and a device of providing timing information within a wireless communication system is described. The timing information is extracted from a received transmit signal. The inventive method comprises the steps of providing a training signal on the receiver side relating to a known signal portion of the transmit signal, scaling the training signal, quantizing the scaled training signal, correlating one or more parts of the received transmit signal with the scaled training signal to obtain one or more correlation results, and determining the timing information on the basis of the correlation results.
    Type: Application
    Filed: January 5, 2004
    Publication date: September 16, 2004
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fabian Wenger, Uwe Dettmar, Udo Wachsmann, Peter Schramm
  • Publication number: 20020021715
    Abstract: A frequency tracking device (FTD) in particular for use in a OFDM communication system comprises a selector (SEL) which selects on the basis of N channel coefficients (Cest) a number M of subcarriers corresponding to the M channel coefficients (Cest) having the largest absolute values. An evaluator (EVAL) of the frequency tracking device (FTD) determines a frequency deviation estimate (foff,est) on the basis of the selected M subcarriers and the selected M channel coefficients. In addition to or instead of a feedback correction unit (CORR1) provided upstream of a multi-carrier filter bank (8; FFT), the frequency tracking device (FTD) can also comprise a feed forward correction unit (CORR2) provided downstream of the receiver multi-carrier filter bank (8).
    Type: Application
    Filed: May 31, 2001
    Publication date: February 21, 2002
    Inventors: Kirsten Matheus, Udo Wachsmann, Uwe Dettmar
  • Patent number: 5995572
    Abstract: In a process for demodulation of a received signal that contains, in addition to data to be transmitted, a preset synchronization sequence, the following is done to estimate a frequency shift. At least two nonoverlapping partial sequences of the synchronization sequence are picked off. Using a least-square process, the coefficients of the channel step response at each observation window are determined. The frequency shift, in the form of a phase rotation per symbol, is then estimated.
    Type: Grant
    Filed: February 19, 1997
    Date of Patent: November 30, 1999
    Assignee: Ascom Tech AG
    Inventor: Uwe Dettmar
  • Patent number: 5928376
    Abstract: A method and apparatus for receiving a signal by the ETS/HIPERLAN standard. In the method decoding is done by the BCH standard. Differential pre-coding is done and integration for cancelling transmitter side differential pre-coding is done only after BCH encoding. The apparatus contains a non-coherent demodulation a BCH decoder and an integrator.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: July 27, 1999
    Assignee: Ascom Tech AG
    Inventors: Uwe Dettmar, Armin Wittneben, Weilin Liu