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: 20240030948Abstract: 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: ApplicationFiled: July 18, 2023Publication date: January 25, 2024Inventors: Marko FLEISCHER, Björn JELONNEK, Martin STEIERT, Rene RÖSCHKE, Jan HELLMANN, Dirk SÖNNICHSEN
-
Publication number: 20230155614Abstract: 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: ApplicationFiled: April 7, 2020Publication date: May 18, 2023Inventors: Björn JELONNEK, Andre BAUMGART, Michael WEBER
-
Patent number: 11637573Abstract: 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: GrantFiled: October 10, 2022Date of Patent: April 25, 2023Assignee: NOKIA SOLUTIONS AND NETWORKS OYInventors: Gunter Wolff, Radoslaw Ceszkiel, Grzegorz Haza, Björn Jelonnek, Michael Weber
-
Publication number: 20230111822Abstract: 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: ApplicationFiled: October 10, 2022Publication date: April 13, 2023Inventors: Gunter WOLFF, Radoslaw CESZKIEL, Grzegorz HAZA, Björn JELONNEK, Michael WEBER
-
Patent number: 11575401Abstract: 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: GrantFiled: September 28, 2021Date of Patent: February 7, 2023Assignee: NOKIA SOLUTIONS AND NETWORKS OYInventors: Marko Fleischer, Jan Hellmann, Rene Röschke, Björn Jelonnek, Jürgen Hellstab
-
Publication number: 20220109462Abstract: 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: ApplicationFiled: September 28, 2021Publication date: April 7, 2022Inventors: Marko FLEISCHER, Jan HELLMANN, Rene RÖSCHKE, Björn JELONNEK, Jürgen HELLSTAB
-
Patent number: 11228330Abstract: 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: GrantFiled: October 9, 2020Date of Patent: January 18, 2022Assignee: Nokia Solutions and Networks OyInventors: Grzegorz Haza, Radoslaw Ceszkiel, Gunter Wolff, Björn Jelonnek
-
Publication number: 20210119657Abstract: 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: ApplicationFiled: October 9, 2020Publication date: April 22, 2021Inventors: Grzegorz HAZA, Radoslaw CESZKIEL, Gunter WOLFF, Björn JELONNEK
-
Patent number: 7415252Abstract: 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: GrantFiled: April 2, 2004Date of Patent: August 19, 2008Assignee: Nokia Siemens Networks GmbH & Co. KGInventor: Björn Jelonnek
-
Patent number: 7386078Abstract: 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: GrantFiled: August 19, 2002Date of Patent: June 10, 2008Assignee: Siemens AktiengesellschaftInventors: Hans Dieterich, Björn Jelonnek
-
Publication number: 20080084244Abstract: 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: ApplicationFiled: April 8, 2005Publication date: April 10, 2008Inventor: Bjorn Jelonnek
-
Patent number: 7327804Abstract: 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: GrantFiled: April 1, 2003Date of Patent: February 5, 2008Assignee: Siemens AktiengesellschaftInventor: Björn Jelonnek
-
Patent number: 7249008Abstract: 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: GrantFiled: January 23, 2002Date of Patent: July 24, 2007Assignee: Nokia Siemens Networks GmbH & Co. KGInventors: Björn Jelonnek, Armin Splett
-
Publication number: 20070063769Abstract: 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: ApplicationFiled: April 2, 2004Publication date: March 22, 2007Applicant: Siemens AktiengesellschaftInventor: Bjorn Jelonnek
-
Patent number: 7170346Abstract: 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: GrantFiled: February 27, 2003Date of Patent: January 30, 2007Assignee: Siemens AktiengesellschaftInventors: Björn Jelonnek, Armin Splett
-
Patent number: 7132969Abstract: 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: GrantFiled: July 28, 2003Date of Patent: November 7, 2006Assignee: Siemens AktiengesellschaftInventors: Armin Fuchs, Björn Jelonnek, Gunter Wolff
-
Publication number: 20060164275Abstract: 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: ApplicationFiled: July 28, 2003Publication date: July 27, 2006Applicant: ARMIN FUCHS, BJORN JELONNEK, GUNITER WOLFInventors: Armin Fuchs, Bjorn Jelonnek, Gunter Wolff
-
Patent number: 7030797Abstract: 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: GrantFiled: December 19, 2002Date of Patent: April 18, 2006Assignee: Siemens AktiengesellschaftInventor: Björn Jelonnek
-
Patent number: 7015843Abstract: 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: GrantFiled: December 19, 2002Date of Patent: March 21, 2006Inventor: Björn Jelonnek
-
Publication number: 20050163269Abstract: 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: ApplicationFiled: April 1, 2003Publication date: July 28, 2005Applicant: SIEMENS AGInventor: Bjorn Jelonnek