Patents by Inventor Stefan Fechtel

Stefan Fechtel 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: 10057389
    Abstract: A method including processing a data frame, the data frame having a predetermined frame size and including at least one data symbol configured to form a plurality of sub-carriers in the frequency domain, wherein each of the at least one data symbol comprises a user data portion and a guard interval portion, wherein each of the at least one data symbol includes a plurality of sub-symbols, and wherein at least one of the following parameters is variable during the processing: a size of the guard interval portion, a size of the user data portion, a size of the at least one data symbol, a number of data symbols the data frame comprises, a content of the guard interval portion, and a configuration of the sub-symbol boundaries.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: August 21, 2018
    Assignee: Intel Deutschland GmbH
    Inventor: Stefan Fechtel
  • Publication number: 20180175959
    Abstract: A method for detecting a transmission from an interfering radio cell includes: receiving a signal comprising transmissions from a serving radio cell and from a plurality of interfering radio cells, wherein a reference symbol of a transmission from at least one interfering radio cell of the plurality of interfering radio cells is colliding with a reference symbol of a transmission from the serving radio cell; generating a set of transmission signal hypotheses, each of which is dependent on at least one interferer parameter of the at least one interfering radio cell; obtaining at least one interferer radio cell identifier; and detecting a transmission from at least one interfering radio cell of the plurality of interfering radio cells in the received signal based on the at least one interferer radio cell identifier and the set of transmission signal hypotheses.
    Type: Application
    Filed: May 24, 2016
    Publication date: June 21, 2018
    Inventors: Manoj RAVICHANDRAN, Andrey CHERVYAKOV, Franz EDER, Stefan FECHTEL, Sabine ROESSEL
  • Publication number: 20180159704
    Abstract: A channel estimation coefficients generator (200) for generating channel estimation coefficients for channel estimation filtering includes: a parameter acquisition unit (205) configured to acquire a first set of input parameters (208) and to acquire a second set of input parameters (209), wherein a time variability of the first set of input parameters (208) is smaller than a time variability of the second set of input parameters (209); a first channel estimation coefficients generator (201) configured to generate a prototype set of channel estimation coefficients (202) based on the first set of input parameters (208); and a second channel estimation coefficients generator (203) configured to generate a refined set of channel estimation coefficients (204) based on the prototype set of channel estimation coefficients (202) and based on the second set of input parameters (209).
    Type: Application
    Filed: May 18, 2016
    Publication date: June 7, 2018
    Inventors: Stefan Fechtel, Cecilia Carbonelli, Stefan Franz
  • Patent number: 9832667
    Abstract: A method for estimating noise and interferer parameters includes receiving a signal comprising a noise and interference signal contribution. Noise and interference power samples are generated based on the signal. The noise and interference power samples are quantized into quantization levels. The occurrences of noise and interference power samples are accumulated for each quantization level during an observation period. Noise and interferer parameters are estimated based on the number of occurrences of noise and interference power samples per quantization level during the observation period.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: November 28, 2017
    Assignee: Intel IP Corporation
    Inventor: Stefan Fechtel
  • Patent number: 9787446
    Abstract: A method (700) for processing resource blocks in a receiver may include receiving (701) a signal comprising transmissions from a plurality of radio cells, wherein received samples of the signal are arranged in a plurality of resource blocks (300); forming (702) a plurality of clusters ({xi,jN}) based on a similarity criterion with respect to the plurality of resource blocks (300); and assigning (703) each resource block of the plurality of resource blocks (300) to one cluster of the plurality of clusters ({xi,jN}).
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: October 10, 2017
    Assignee: Intel IP Corporation
    Inventors: Kilian Roth, Cecilia Carbonelli, Stefan Fechtel
  • Patent number: 9584351
    Abstract: In embodiments, apparatuses, methods, and storage media may be described for removing, from a frequency domain (FD) portion of a signal, a guard interval portion. One or more data symbols of the resultant unconstrained FD portion of the signal may then be constrained according to one or more tolerance parameters or thresholds. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: February 28, 2017
    Assignee: Intel Corporation
    Inventor: Stefan Fechtel
  • Patent number: 9578653
    Abstract: Embodiments provide improved interference classification and parameter estimation at a User Equipment (UE) that uses received scheduling information associated with interfering cells from a network node together with parameters associated with interfering cells generated locally to the UE to generate an interference mapping data set that may be used to adjust subsequent interference classification and parameter estimation processing in the UE.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: February 21, 2017
    Assignee: Intel IP Corporation
    Inventors: Cecilia Carbonelli, Stefan Fechtel, Stefan Franz, Sabine Roessel
  • Publication number: 20160295597
    Abstract: Embodiments for providing signaling interference signaling information for UE assistance are generally described herein. In some embodiments, signaling information associated with interfering cells from a network node is received by user equipment (UE). The UE adjusts parameter estimation for mitigating interference based on the received signaling information.
    Type: Application
    Filed: March 28, 2014
    Publication date: October 6, 2016
    Inventors: Stefan Franz, Cecilia Carbonelli, Sabine Roessel, Stefan Fechtel
  • Publication number: 20160182267
    Abstract: In embodiments, apparatuses, methods, and storage media may be described for removing, from a frequency domain (FD) portion of a signal, a guard interval portion. One or more data symbols of the resultant unconstrained FD portion of the signal may then be constrained according to one or more tolerance parameters or thresholds. Other embodiments may be described and/or claimed.
    Type: Application
    Filed: December 17, 2014
    Publication date: June 23, 2016
    Inventor: Stefan Fechtel
  • Publication number: 20160095136
    Abstract: Embodiments provide improved interference classification and parameter estimation at a User Equipment (UE) that uses received scheduling information associated with interfering cells from a network node together with parameters associated with interfering cells generated locally to the UE to generate an interference mapping data set that may be used to adjust subsequent interference classification and parameter estimation processing in the UE.
    Type: Application
    Filed: September 26, 2014
    Publication date: March 31, 2016
    Inventors: Cecilia CARBONELLI, Stefan FECHTEL, Stefan FRANZ, Sabine ROESSEL
  • Patent number: 9178737
    Abstract: An OFDM signal generator includes a time domain data signal generator configured to generate a time domain data signal, a partial signal generator configured to generate a plurality of partial signals based on a tail section of the time domain data signal, and a circuit element configured to form a difference between or a sum of the time domain data signal and the plurality of partial signals.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: November 3, 2015
    Assignee: Intel Deutschland GmbH
    Inventor: Stefan Fechtel
  • Publication number: 20150270934
    Abstract: A method (700) for processing resource blocks in a receiver may include receiving (701) a signal comprising transmissions from a plurality of radio cells, wherein received samples of the signal are arranged in a plurality of resource blocks (300); forming (702) a plurality of clusters ({xi,jN}) based on a similarity criterion with respect to the plurality of resource blocks (300); and assigning (703) each resource block of the plurality of resource blocks (300) to one cluster of the plurality of clusters ({xi,jN}).
    Type: Application
    Filed: March 17, 2015
    Publication date: September 24, 2015
    Inventors: Kilian Roth, Cecilia Carbonelli, Stefan Fechtel
  • Publication number: 20150271687
    Abstract: A method for estimating noise and interferer parameters includes receiving a signal comprising a noise and interference signal contribution. Noise and interference power samples are generated based on the signal. The noise and interference power samples are quantized into quantization levels. The occurrences of noise and interference power samples are accumulated for each quantization level during an observation period. Noise and interferer parameters are estimated based on the number of occurrences of noise and interference power samples per quantization level during the observation period.
    Type: Application
    Filed: March 17, 2015
    Publication date: September 24, 2015
    Inventor: Stefan Fechtel
  • Patent number: 8995543
    Abstract: The method comprises receiving a signal comprising a symbol-carrier matrix, the symbol-carrier matrix comprising a predetermined pattern of reference symbols, the reference symbols comprising a target reference symbol, determining a first channel estimate vector based on demodulating received reference symbols with known reference symbols, and determining a second channel estimate vector by multiplying the first channel estimate vector with an interference cancellation matrix, wherein the second channel estimate vector includes an interference cancelled channel estimate at a position of the target reference symbol.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: March 31, 2015
    Assignee: Intel Mobile Communications GmbH
    Inventors: Stefan Fechtel, Andreas Bury
  • Publication number: 20150003573
    Abstract: The method comprises receiving a signal comprising a symbol-carrier matrix, the symbol-carrier matrix comprising a predetermined pattern of reference symbols, the reference symbols comprising a target reference symbol, determining a first channel estimate vector based on demodulating received reference symbols with known reference symbols, and determining a second channel estimate vector by multiplying the first channel estimate vector with an interference cancellation matrix, wherein the second channel estimate vector includes an interference cancelled channel estimate at a position of the target reference symbol.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Stefan FECHTEL, Andreas Bury
  • Publication number: 20140355626
    Abstract: A method including processing a data frame, the data frame having a predetermined frame size and including at least one data symbol configured to form a plurality of sub-carriers in the frequency domain, wherein each of the at least one data symbol comprises a user data portion and a guard interval portion, wherein each of the at least one data symbol includes a plurality of sub-symbols, and wherein at least one of the following parameters is variable during the processing: a size of the guard interval portion, a size of the user data portion, a size of the at least one data symbol, a number of data symbols the data frame comprises, a content of the guard interval portion, and a configuration of the sub-symbol boundaries.
    Type: Application
    Filed: May 28, 2013
    Publication date: December 4, 2014
    Inventor: Stefan FECHTEL
  • Patent number: 8848837
    Abstract: A method for carrier frequency tracking of a received signal having a burst structure includes dividing each burst into a number of segments. The carrier frequency offset of a first segment within a burst is measured to obtain a first segment carrier frequency offset measurement value. The carrier frequency offset of a second segment within the burst is corrected by a second segment carrier frequency offset correction value based on the first segment carrier frequency offset measurement value.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: September 30, 2014
    Assignee: Intel Mobile Communications GmbH
    Inventors: Burkhard Becker, Stefan Fechtel
  • Publication number: 20140140194
    Abstract: An OFDM signal generator includes a time domain data signal generator configured to generate a time domain data signal, a partial signal generator configured to generate a plurality of partial signals based on a tail section of the time domain data signal, and a circuit element configured to form a difference between or a sum of the time domain data signal and the plurality of partial signals.
    Type: Application
    Filed: November 20, 2012
    Publication date: May 22, 2014
    Inventor: Stefan Fechtel
  • Patent number: 8509054
    Abstract: In an OFDM-based transmission method it can be stated for the preamble (4, 7) of a data packet that its N preamble segments (B, B) are obtained from the segment-by-segment multiplication of an initial segment, which is fixed for all N preamble segments, by a multiplication sequence with a length of N elements. It can be stated for the OFDM data symbols that a plurality of OFDM symbols which are transmitted successively in time each include at least one pilot signal, with the respective subcarrier which transmits the at least one pilot signal being dependent on the time index of the espective OFDM symbol.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: August 13, 2013
    Assignee: Lantiq Deutschland GmbH
    Inventor: Stefan Fechtel
  • Patent number: 8488690
    Abstract: A method of channel estimation and a channel estimator for a multiple carrier radio transmission system is described. The method comprises receiving a signal comprising a symbol-carrier matrix, the symbol-carrier matrix comprising a pre-determined pattern of pilot symbols, and determining first channel estimates at pilot symbol positions of the pilot symbols in the symbol-carrier matrix. The method further comprises determining second channel estimates at intermediate positions of the symbol-carrier matrix, wherein the intermediate positions are separated from the pilot symbol positions of the pilot symbols by positions associated with non-determined channel estimates and determining third channel estimates at further positions of the symbol-carrier matrix.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: July 16, 2013
    Assignee: Intel Mobile Communications GmbH
    Inventors: Cecilia Carbonelli, Stefan Fechtel