Patents by Inventor Bjorn Jelonnek

Bjorn Jelonnek 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).

  • Publication number: 20240030948
    Abstract: Disclosed is a method comprising transmitting a first signal, obtaining an indication of a harmonic, wherein the harmonic is caused by the transmission of the first signal, determining, based on the indication of the harmonic, an estimation of the harmonic, receiving a second signal, wherein the second signal comprises the harmonic, and subtracting the estimation of the harmonic from the second signal.
    Type: Application
    Filed: July 18, 2023
    Publication date: January 25, 2024
    Inventors: Marko FLEISCHER, Björn JELONNEK, Martin STEIERT, Rene RÖSCHKE, Jan HELLMANN, Dirk SÖNNICHSEN
  • Publication number: 20230155614
    Abstract: Disclosed is a method comprising selecting a mathematical model associated with a nonlinear component, determining an error signal associated with the nonlinear component, wherein the error signal indicates a difference between a first signal and a second signal, estimating one or more parameters that minimize the error signal based on the mathematical model, and estimating and/or linearizing the nonlinear component based on the estimated one or more parameters.
    Type: Application
    Filed: April 7, 2020
    Publication date: May 18, 2023
    Inventors: Björn JELONNEK, Andre BAUMGART, Michael WEBER
  • Patent number: 11637573
    Abstract: An apparatus comprises a digital processing device configured to generate a digital transmission signal, a digital-to-analog converter connected to the digital processing device and configured to convert the digital transmission signal into an analog transmission signal, and a power amplifier connected to the digital-to-analog converter and configured to amplify the analog transmission signal. An antenna filter is connected to the power amplifier and configured to filter the amplified analog transmission signal; the antenna filter is configured to pass frequencies in at least one passband and to attenuate frequencies in at least one stopband. The digital processing device is configured to perform a process of reducing peak power in the digital transmission signal; in this process error components having different frequencies are produced. A frequency spectrum of the error components is manipulated such that a part of the error components is deposited in the stopband of the antenna filter.
    Type: Grant
    Filed: October 10, 2022
    Date of Patent: April 25, 2023
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Gunter Wolff, Radoslaw Ceszkiel, Grzegorz Haza, Björn Jelonnek, Michael Weber
  • Publication number: 20230111822
    Abstract: An apparatus comprises a digital processing device configured to generate a digital transmission signal, a digital-to-analog converter connected to the digital processing device and configured to convert the digital transmission signal into an analog transmission signal, and a power amplifier connected to the digital-to-analog converter and configured to amplify the analog transmission signal. An antenna filter is connected to the power amplifier and configured to filter the amplified analog transmission signal; the antenna filter is configured to pass frequencies in at least one passband and to attenuate frequencies in at least one stopband. The digital processing device is configured to perform a process of reducing peak power in the digital transmission signal; in this process error components having different frequencies are produced. A frequency spectrum of the error components is manipulated such that a part of the error components is deposited in the stopband of the antenna filter.
    Type: Application
    Filed: October 10, 2022
    Publication date: April 13, 2023
    Inventors: Gunter WOLFF, Radoslaw CESZKIEL, Grzegorz HAZA, Björn JELONNEK, Michael WEBER
  • Patent number: 11575401
    Abstract: An apparatus includes an estimation circuitry configured to receive a first set of one or more digital signals of transmitters of a communication system, and capture a set of one or more radio frequency signals that have been generated from the first set of digital signals The set of radio frequency signals being input of an antenna system of the communication system. Based on the first set of digital signals and the corresponding set of radio frequency signals, a set of weights related to a distortion effect caused by the generation of the radio frequency signals is derived. A received second set of digital signals is weighted using the set of weights, resulting in filtered signals. Using the filtered signals, a correction signal indicative of an interference caused by transmission of the second set of digital signals at a receiver of the communication system is estimated.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: February 7, 2023
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Marko Fleischer, Jan Hellmann, Rene Röschke, Björn Jelonnek, Jürgen Hellstab
  • Publication number: 20220109462
    Abstract: An apparatus includes an estimation circuitry configured to receive a first set of one or more digital signals of transmitters of a communication system, and capture a set of one or more radio frequency signals that have been generated from the first set of digital signals The set of radio frequency signals being input of an antenna system of the communication system. Based on the first set of digital signals and the corresponding set of radio frequency signals, a set of weights related to a distortion effect caused by the generation of the radio frequency signals is derived. A received second set of digital signals is weighted using the set of weights, resulting in filtered signals. Using the filtered signals, a correction signal indicative of an interference caused by transmission of the second set of digital signals at a receiver of the communication system is estimated.
    Type: Application
    Filed: September 28, 2021
    Publication date: April 7, 2022
    Inventors: Marko FLEISCHER, Jan HELLMANN, Rene RÖSCHKE, Björn JELONNEK, Jürgen HELLSTAB
  • Patent number: 11228330
    Abstract: A method comprising: obtaining a first radio signal and a second radio signal, determining a first envelope signal based on the first radio signal and a second envelope signal based on the second radio signal, determining a preview envelope signal based on the first envelope signal and the second envelope signal, determining a common clipping gain signal based on the preview envelope signal, determining a first clipping gain signal based on the common clipping gain signal and a first weighing factor, determining a second clipping gain signal based on the common clipping gain signal and a second weighing factor, performing a first crest factor reduction for the first radio signal utilizing the first clipping gain signal, and performing a second crest factor reduction for the second radio signal utilizing the second clipping gain signal.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: January 18, 2022
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Grzegorz Haza, Radoslaw Ceszkiel, Gunter Wolff, Björn Jelonnek
  • Publication number: 20210119657
    Abstract: A method comprising: obtaining a first radio signal and a second radio signal, determining a first envelope signal based on the first radio signal and a second envelope signal based on the second radio signal, determining a preview envelope signal based on the first envelope signal and the second envelope signal, determining a common clipping gain signal based on the preview envelope signal, determining a first clipping gain signal based on the common clipping gain signal and a first weighing factor, determining a second clipping gain signal based on the common clipping gain signal and a second weighing factor, performing a first crest factor reduction for the first radio signal utilizing the first clipping gain signal, and performing a second crest factor reduction for the second radio signal utilizing the second clipping gain signal.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 22, 2021
    Inventors: Grzegorz HAZA, Radoslaw CESZKIEL, Gunter WOLFF, Björn JELONNEK
  • Patent number: 7415252
    Abstract: A system and a method create a pre-distorted signal y(k) from an interpolated broadband baseband signal x(k) for a transmitter power amplifier having at least three branches to which the signal x(k) is respectively connected on the input side. A first branch contains a distortion device for taking into account memory effects of the transmitter power amplifier to which the signal x(k) is supplied on the input side. Where 2=j=n, each other j-th branch contains the following serially mounted elements: a deceleration device with a signal x(k) supplied on the input side, a first adder, a digital low-pass filter, and a second adder, the output signal formed by the second adder being used to create the pre-distorted signal y(k). The distortion device pertaining to the first branch is connected, on the input side, to another input of the second adder of the second branch, and on the output side, to another input of the first adder of the second branch.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: August 19, 2008
    Assignee: Nokia Siemens Networks GmbH & Co. KG
    Inventor: Björn Jelonnek
  • Patent number: 7386078
    Abstract: A radio signal in a radio communication system may be filtered to prepare an EDGE-signal. In this case, the signal-to-noise-ratios are calculated according to a first operation in addition to previously known methods for detecting a neighboring channel interference. In addition, other variously tuned filters are activated when a corresponding threshold is reached, where the thresholds are associated with correspondingly intense interferences from neighboring channel influences. A filtering method or filter module can be mounted in an existing station behind an existing receiving filter. In the first filtering operation, the previous filter effect is reduced to the smallest amount possible before new filtering is carried out to produce a desired signal. The EDGE signals can also be produced in a simple manner from GMSK signals.
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: June 10, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans Dieterich, Björn Jelonnek
  • Publication number: 20080084244
    Abstract: According to a method, a first signal is produced from a digital input signal by pre-emphasis and said signal is supplied, after carrier frequency translation, D/A conversion and modulation, to a power amplifier for producing a carrier-frequency output signal. IN order to linearize the characteristic curve of the power amplifier, pre-emphasis is carried out in a manner controlled by parameters. A test signal is superposed to the first signal, thereby producing an output signal having a carrier-frequency test signal portion in addition to a carrier-frequency input signal portion. A comparison of the carrier-frequency test signal portion of the output signal with the test signal yields the parameter for controlling pre-emphasis. Alternatively, the test signal can be superposed before the pre-emphasis to be carried out.
    Type: Application
    Filed: April 8, 2005
    Publication date: April 10, 2008
    Inventor: Bjorn Jelonnek
  • Patent number: 7327804
    Abstract: Partial signals of a basic frequency band are used to form a carrier frequency output signal. Each of n partial signals is attributed as an input signal to a representative main branch and the corresponding partial signal is limited in amplitude, filtered and converted into an intermediate frequency partial signal. As output signals of the main branch, the n partial signals are assembled into a common sum signal. Moreover, each partial signal reaches an auxiliary branch, whereby expected peak values of the partial signal can be determined as estimated values. Using the estimated values, the amplitude limitations of the corresponding partial signals, executed in the main branch, can be regulated in the branch.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: February 5, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventor: Björn Jelonnek
  • Patent number: 7249008
    Abstract: An arrangement for runtime compensation of a runtime difference, arising through emulation of a high frequency signal, is disclosed, with a signal x(t), for emulation by a signal processing device, which emulates the signal x(t) with a signal x(t) and a device for determining a difference signal between the signals x(t) and x(t). The arrangement is characterized in that the emulated signal x(t) is conducted via filter with a negative group runtime for certain frequency ranges.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: July 24, 2007
    Assignee: Nokia Siemens Networks GmbH & Co. KG
    Inventors: Björn Jelonnek, Armin Splett
  • Publication number: 20070063769
    Abstract: A system and a method create a pre-distorted signal y(k) from an interpolated broadband baseband signal x(k) for a transmitter power amplifier having at least three branches to which the signal x(k) is respectively connected on the input side. A first branch contains a distortion device for taking into account memory effects of the transmitter power amplifier to which the signal x(k) is supplied on the input side. Where 2=j=n, each other j-th branch contains the following serially mounted elements: a deceleration device with a signal x(k) supplied on the input side, a first adder, a digital low-pass filter, and a second adder, the output signal formed by the second adder being used to create the pre-distorted signal y(k). The distortion device pertaining to the first branch is connected, on the input side, to another input of the second adder of the second branch, and on the output side, to another input of the first adder of the second branch.
    Type: Application
    Filed: April 2, 2004
    Publication date: March 22, 2007
    Applicant: Siemens Aktiengesellschaft
    Inventor: Bjorn Jelonnek
  • Patent number: 7170346
    Abstract: A system reduces non-linear distortions in an output signal of an amplifier stage that is configured according to the feed forward principle. An amplifier stage input signal arrives at a main branch of an amplifier. The output signal of the amplifier, which is distorted in a non-linear manner, arrives at an adder. An output of the adder forms the amplifier stage output signal. The output signal which is distorted in a non-linear manner and the amplifier stage input signal are fed to a secondary branch that comprises an error signal device. The error signal device generates an error signal from the delayed amplifier stage input signal and the output signal of the amplifier, which is distorted in a non-linear manner. The error signal is fed to the adder in order to reduce distortions in the amplifier stage output signal. The error signal device comprises at least one transmission device that is provided with a negative group delay time.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: January 30, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Björn Jelonnek, Armin Splett
  • Patent number: 7132969
    Abstract: A delay device has at least one first delay element and optional additional delay elements connected downstream from the first in a serially consecutive manner. The digital input signal is connected to an input of the first delay element and is connected to an input of a first D/A converter. The output of the first delay element is connected to an input of another D/A converter assigned thereto. The optional additional delay elements each have outputs connected to an input of another D/A converter assigned to the respective delay elements. All D/A converters are combined on the output side in a step-by-step manner so that output signals of all D/A converters form the analog output signal or the device. A specific coefficient is assigned to each D/A converter, and a specific delay time is assigned to each delay element for realizing a filter characteristic.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: November 7, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventors: Armin Fuchs, Björn Jelonnek, Gunter Wolff
  • Publication number: 20060164275
    Abstract: A delay device has at least one first delay element and optional additional delay elements connected downstream from the first in a serially consecutive manner. The digital input signal is connected to an input of the first delay element and is connected to an input of a first D/A converter. The output of the first delay element is connected to an input of another D/A converter assigned thereto. The optional additional delay elements each have outputs connected to an input of another D/A converter assigned to the respective delay elements. All D/A converters are combined on the output side in a step-by-step manner so that output signals of all D/A converters form the analog output signal or the device. A specific coefficient is assigned to each D/A converter, and a specific delay time is assigned to each delay element for realizing a filter characteristic.
    Type: Application
    Filed: July 28, 2003
    Publication date: July 27, 2006
    Applicant: ARMIN FUCHS, BJORN JELONNEK, GUNITER WOLF
    Inventors: Armin Fuchs, Bjorn Jelonnek, Gunter Wolff
  • Patent number: 7030797
    Abstract: A sigma-delta modulator converting digital input signals x(k) includes a first feedback loop of a spectrally formed output signal y(k) of the sigma-delta modulator and a second feedback loop of a spectrally formed differential signal e(k), obtained from an intermediate signal u(k) and the output signal y(k). The intermediate signal u(k) constitutes the differential signal of the input signal x(k) and the total signal r(k) of the first and second feedback loops. A quantizer determines the output signal y(k) based on the intermediate signal u(k), whereby k is the discrete independent time variable. The sigma-delta converter generates a skew between the output signal y(k) and the input signal x(k).
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: April 18, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventor: Björn Jelonnek
  • Patent number: 7015843
    Abstract: A digital input signal passes through a principal path, containing at least one sigma-delta modulator having a transmission function and a digital-to-analog converter, and at least one parallel path, connected in parallel to the principal path and having at least one sigma-delta modulator and a digital-to-analog converter. The sigma-delta converter produces an analog output signal by summing the analog output signals of the principal and parallel paths. A differential signal from which at least the noise outside a useful band has been filtered is obtained from the digital output signal of the sigma-delta modulator of the principal path and the input signal that has been spectrally formed by a filter, according to the transmission function of the sigma-delta modulator in the principal path. This differential signal is supplied as the input signal to the sigma-delta modulator in the parallel path(s).
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: March 21, 2006
    Inventor: Björn Jelonnek
  • Publication number: 20050163269
    Abstract: Partial signals of a basic frequency band are used to form a carrier frequency output signal. Each of n partial signals is attributed as an input signal to a representative main branch and the corresponding partial signal is limited in amplitude, filtered and converted into an intermediate frequency partial signal. As output signals of the main branch, the n partial signals are assembled into a common sum signal. Moreover, each partial signal reaches an auxiliary branch, whereby expected peak values of the partial signal can be determined as estimated values. Using the estimated values, the amplitude limitations of the corresponding partial signals, executed in the main branch, can be regulated in the branch.
    Type: Application
    Filed: April 1, 2003
    Publication date: July 28, 2005
    Applicant: SIEMENS AG
    Inventor: Bjorn Jelonnek