Patents by Inventor Bo Bernhardsson
Bo Bernhardsson 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).
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Publication number: 20240041378Abstract: There is provided mechanisms for determining calibration of positions of EEG electrodes on a subject. A method is performed by a controller. The method comprises obtaining a set of signals representative of estimated positions for the EEG electrodes when placed on the subject. Each of the estimated positions represents a position of one of the EEG electrodes relative to the subject. The method comprises comparing the set of signals representative of estimated positions to a set of reference signals representative of reference positions. The set of reference positions represents intended positions for the EEG electrodes when placed on the subject. The method comprises determining the calibration of positions of the EEG electrodes using a difference between a property of the obtained signals and the set of reference signals.Type: ApplicationFiled: December 18, 2020Publication date: February 8, 2024Inventors: Pex Tufvesson, Johan Eker, Bo Bernhardsson
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Publication number: 20150278485Abstract: A method of generating a combination therapy model for treating HIV is described. The method includes receiving a group of selected antibodies for the treatment of HIV and fitness parameters for a number of escape mutants and utilizing an iterative algorithm to determine suboptimal or optimal combinations of antibodies and concentrations for each selected antibody. The algorithm explicitly accounts for evolutionary dynamics of a generic disease.Type: ApplicationFiled: March 27, 2015Publication date: October 1, 2015Inventors: Vanessa JONSSON, Nikolai MATNI, Anders RANTZER, Bo Bernhardsson
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Patent number: 8798213Abstract: Methods and devices for detecting a symbol in a radio channel and for cell identification are disclosed. A signal is received from the radio channel and the signal is filtered by a filter being responsive to the symbol thereby establishing a first signal. A second signal dependent on the noise floor of the received signal is established—whereby a time interval expected to include multi-path components being excluded or suppressed. A third signal being the ratio between the first signal and the noise floor is established, and the presence of the symbol is detected by detecting a peak in the third signal.Type: GrantFiled: August 27, 2008Date of Patent: August 5, 2014Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Bengt Lindoff, Bo Bernhardsson, Johan Nilsson
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Patent number: 8744026Abstract: A method of detecting a desired signal within a composite signal provides for suppression of interfering signal(s). The method, implemented in a wireless communication apparatus, for example, includes receiving the composite signal and obtaining sample values therefrom. At least some of the sample values include desired and interfering signal components. The method further includes generating an interfering signal channel estimate by: forming sample pairs for some or all of the sample values; identifying sample pairs of interest as those sample pairs in which the interfering signal component is the same; and calculating the interfering signal channel estimate as an average value determined from one or more of the sample pairs of interest. The method further includes detecting desired signal symbols from the composite signal in a joint detection process that functionally depends on the interfering signal channel estimate.Type: GrantFiled: October 13, 2010Date of Patent: June 3, 2014Assignee: Telefonakktiebolaget LM Ericsson (Publ)Inventors: Anders Rosenqvist, Niklas Andgart, Bo Bernhardsson
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Patent number: 8594694Abstract: A user equipment (UE) in a mobile communications system is operated in a manner that alleviates or avoids an overload condition in the UE. This involves operating a receiver of the UE to receive one or more data blocks via a channel. In response to a user equipment overload condition being detected, a channel quality indicator (CQI) value is reported to a serving base station, wherein the reported CQI value represents a channel quality that is lower than an actual quality of the channel. The UE is then operated in a manner that is consistent with the reported CQI value. UE overload conditions include overheating, and an inability to process received data blocks at the rate at which they are being received.Type: GrantFiled: November 21, 2011Date of Patent: November 26, 2013Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Bengt Lindoff, Bo Bernhardsson, Johan Nilsson, Torgny Palenius, Andreas Wilde, Werner Anzill
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Patent number: 8472538Abstract: Methods for calculating a delay spread estimate in an OFDM-receiver are described, along with computer program products and electronic apparatuses for performing the methods. The methods comprise determining a position of an FFT-window in relation to one or more OFDM-symbols of a received OFDM-signal and using the determined position to obtain a first OFDM-symbol from the received OFDM-signal. An FFT is applied to the first OFDM-symbol to produce an FFT-output signal. A frequency dependent phase rotation component of the FFT-output signal is determined and removed from the FFT-output signal. A number of zero-crossings of at least one of a real component and an imaginary component of a transfer function of a channel, over which the received OFDM-signal has been transmitted, derived from the FFT-output signal where the frequency dependent phase rotation component has been removed is determined, and a delay spread estimate is calculated based on the determined number of zero-crossings.Type: GrantFiled: December 8, 2008Date of Patent: June 25, 2013Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Leif Wilhelmsson, Bo Bernhardsson, Lars Björkman
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Patent number: 8401128Abstract: A method and system are described for processing a received signal at a receiver in a communication system. The receiver includes a digital filter and automatic gain control means. Information indicating the frequency band of operation and the type of service of the received signal is received at the receiver from the communication system. The gain and filtering parameters of the receiver are set according to the received information. The received signal is processed at the receiver using the gain and filtering parameters. Optionally, a determination of whether the received signal contains adjacent channel interference above a predetermined allowable threshold may also be made and the determination may then be used in setting the gain and filtering parameters.Type: GrantFiled: April 22, 2004Date of Patent: March 19, 2013Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Bengt Lindoff, Bo Bernhardsson
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Patent number: 8385222Abstract: In one aspect, a method and apparatus derive channel quality estimates for given subcarriers in an OFDM signal, based on reference signal (RS) or other known-signal measurements made for another set of subcarriers. In at least one embodiment, a wireless communication apparatus implements a method whereby it is configured for receiving reference information on the first set of subcarriers; generating the first channel quality estimates in the frequency domain, based on the received reference information; computing a power delay profile for the first set of subcarriers; and determining the second channel quality estimates either by extrapolating from the first channel quality estimates or as an average of the first channel quality estimates, depending on a delay spread of the power delay profile.Type: GrantFiled: March 12, 2010Date of Patent: February 26, 2013Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Bengt Lindoff, Bo Bernhardsson, Muhammad Ali Kazmi
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Publication number: 20120093263Abstract: A method of detecting a desired signal within a composite signal provides for suppression of interfering signal(s). The method, implemented in a wireless communication apparatus, for example, includes receiving the composite signal and obtaining sample values therefrom. At least some of the sample values include desired and interfering signal components. The method further includes generating an interfering signal channel estimate by: forming sample pairs for some or all of the sample values; identifying sample pairs of interest as those sample pairs in which the interfering signal component is the same; and calculating the interfering signal channel estimate as an average value determined from one or more of the sample pairs of interest. The method further includes detecting desired signal symbols from the composite signal in a joint detection process that functionally depends on the interfering signal channel estimate.Type: ApplicationFiled: October 13, 2010Publication date: April 19, 2012Inventors: Anders Rosenqvist, Niklas Andgart, Bo Bernhardsson
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Publication number: 20120064909Abstract: A user equipment (UE) in a mobile communications system is operated in a manner that alleviates or avoids an overload condition in the UE. This involves operating a receiver of the UE to receive one or more data blocks via a channel. In response to a user equipment overload condition being detected, a channel quality indicator (CQI) value is reported to a serving base station, wherein the reported CQI value represents a channel quality that is lower than an actual quality of the channel. The UE is then operated in a manner that is consistent with the reported CQI value. UE overload conditions include overheating, and an inability to process received data blocks at the rate at which they are being received.Type: ApplicationFiled: November 21, 2011Publication date: March 15, 2012Inventors: Bengt Lindoff, Bo Bernhardsson, Johan Nilsson, Torgny Palenius, Andreas Wilde, Werner Anzill
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Patent number: 8103219Abstract: The automatic frequency correction value applied by a receiver is altered to minimize long-term drift of a path delay profile. In one embodiment, the phase or timing error resulting from constant frequency corrections is accumulated, and an estimated frequency correction value is selectively quantized into an actual frequency correction value in response to the accumulated phase/timing error. The quantized value above or below the estimate is selected to minimize the accumulated phase/timing error that gives rise to path delay profile drift. In another embodiment, a timing circuit measures the instantaneous path delay profile drift incurred with each frequency correction, and integrates the instantaneous drift measurements over time to yield a path delay profile drift. The drift (or its rate of change) is then used to adjust a frequency correction value so as to minimize the drift.Type: GrantFiled: December 18, 2008Date of Patent: January 24, 2012Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Andres Reial, Bo Bernhardsson, Xiaohui Wang
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Patent number: 8086229Abstract: A user equipment (UE) in a mobile communications system is operated in a manner that alleviates or avoids an overload condition in the UE. This involves operating a receiver of the UE to receive one or more data blocks via a channel. In response to a user equipment overload condition being detected, a channel quality indicator (CQI) value is reported to a serving base station, wherein the reported CQI value represents a channel quality that is lower than an actual quality of the channel. The UE is then operated in a manner that is consistent with the reported CQI value. UE overload conditions include overheating, and an inability to process received data blocks at the rate at which they are being received.Type: GrantFiled: September 26, 2008Date of Patent: December 27, 2011Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Bengt Lindoff, Bo Bernhardsson, Johan Nilsson, Torgny Palenius, Andreas Wilde, Werner Anzill
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Patent number: 8036694Abstract: A method for generating a power control command in a transceiver in a wireless communication system, where the method comprises the steps of calculating, at the beginning of a predefined time period, a quality measure reference value, generating, repeatedly during the predefined time period, an estimated quality measure value of a signal received at the transceiver; generating a power control command in dependence of the estimated quality measure value and the quality measure reference value; and generating, a number of times during the predefined time period, a modified quality measure reference value from the quality measure reference value. The step of generating the power control command comprises comparing the estimated quality measure value with the modified quality measure reference value. A power control unit, comprising a quality measure estimator, a calculator, a first controller, a second controller and an inner loop element, is configured to implement the method.Type: GrantFiled: December 19, 2005Date of Patent: October 11, 2011Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Lennart Andersson, Johan Nilsson, Bengt Lindoff, Bo Bernhardsson
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Patent number: 7991378Abstract: Methods and apparatus for automatic frequency control in wireless receivers configured to simultaneously receive multiple carrier signals at distinct radio frequencies are disclosed. An exemplary wireless device comprises at least first and second radio front-end circuits configured to receive first and second wireless communication signals transmitted via first and second radio-frequency carriers at distinct first and second radio frequencies, respectively, a control processor configured to designate a master carrier signal and a slave carrier signal from among the received wireless communication signals, and a frequency error estimation circuit configured to estimate a first receiver frequency error using the received master carrier signal. The control processor is further configured to calculate a second receiver frequency error from the first receiver frequency error, for use in compensating one or more receiver processes performed on the slave carrier signal.Type: GrantFiled: August 26, 2008Date of Patent: August 2, 2011Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Bengt Lindoff, Bo Bernhardsson, Fredrik Nordström
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Publication number: 20110176466Abstract: According to various embodiments of the methods and apparatus disclosed herein, a “micro-sleep” functionality is selectively enabled in a wireless receiver, based on an evaluation of channel conditions, traffic characteristics, or both. When micro-sleep operation is appropriate, such as when an estimated signal-to-interference ratio is higher than a pre-determined threshold, one or more receiver circuits in a mobile station can be de-activated for a portion of a sub-frame (or other transmission-time interval) that generally carries traffic data but is not currently carrying data targeted to the mobile station. In this manner, significant power savings can be achieved, independently of or in addition to any power savings provided by existing discontinuous-receive (DRX) technologies.Type: ApplicationFiled: March 8, 2010Publication date: July 21, 2011Inventors: Bengt Lindoff, Bo Bernhardsson
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Patent number: 7949036Abstract: Disclosed is a method of generating a detection signal for detecting energy in a spread-spectrum signal, comprising: de-spreading the spread-spectrum signal by applying a predetermined spreading code to obtain a sequence of de-spread signal symbols (202A-202D); accumulating a number of said signal symbols to obtain a single detection signal. The accumulation includes: obtaining a first and a second subset of said de-spread signal symbols, wherein the symbols of the first subset have values that are known to the receiver or at least known to be the same for all symbols of the first subset, and wherein the symbols of the second subset have unknown values; coherently accumulating the symbols of the first subset to obtain a first partial detection signal (203A, 203B, 203C); non-coherently accumulating the symbols of the second subset to obtain a second partial detection signal (204A, 204B, 204C); and combining the first and second partial detection signals to obtain the single detection signal (208).Type: GrantFiled: March 7, 2006Date of Patent: May 24, 2011Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Johan Nilsson, Bo Bernhardsson, Bengt Lindoff
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Publication number: 20110096680Abstract: In one aspect, a method and apparatus derive channel quality estimates for given subcarriers in an OFDM signal, based on reference signal (RS) or other known-signal measurements made for another set of subcarriers. In at least one embodiment, a wireless communication apparatus implements a method whereby it is configured for receiving reference information on the first set of subcarriers; generating the first channel quality estimates in the frequency domain, based on the received reference information; computing a power delay profile for the first set of subcarriers; and determining the second channel quality estimates either by extrapolating from the first channel quality estimates or as an average of the first channel quality estimates, depending on a delay spread of the power delay profile.Type: ApplicationFiled: March 12, 2010Publication date: April 28, 2011Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Bengt Lindoff, Bo Bernhardsson, Muhammad Ali Kazmi
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Publication number: 20110019749Abstract: Methods for calculating a delay spread estimate in an OFDM-receiver are described, along with computer program products and electronic apparatuses for performing the methods. The methods comprise determining a position of an FFT-window in relation to one or more OFDM-symbols of a received OFDM-signal and using the determined position to obtain a first OFDM-symbol from the received OFDM-signal. An FFT is applied to the first OFDM-symbol to produce an FFT-output signal. A frequency dependent phase rotation component of the FFT-output signal is determined and removed from the FFT-output signal. A number of zero-crossings of at least one of a real component and an imaginary component of a transfer function of a channel, over which the received OFDM-signal has been transmitted, derived from the FFT-output signal where the frequency dependent phase rotation component has been removed is determined, and a delay spread estimate is calculated based on the determined number of zero-crossings.Type: ApplicationFiled: December 8, 2008Publication date: January 27, 2011Applicant: TELEFONAKTIEBOLAGET L.M. ERRICSSONInventors: Leif Wilhelmsson, Bo Bernhardsson, Lars Björkman
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Publication number: 20100311346Abstract: Methods and devices for detecting a symbol in a radio channel and for cell identification are disclosed. A signal is received from the radio channel and the signal is filtered by a filter being responsive to the symbol thereby establishing a first signal. A second signal dependent on the noise floor of the received signal is established—whereby a time interval expected to include multi-path components being excluded or suppressed. A third signal being the ratio between the first signal and the noise floor is established, and the presence of the symbol is detected by detecting a peak in the third signal.Type: ApplicationFiled: August 27, 2008Publication date: December 9, 2010Inventors: Bengt Lindoff, Bo Bernhardsson, Johan Nilsson
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Publication number: 20100272219Abstract: A method and apparatus for adjusting the gain of an amplifier (202) in a communication receiver comprising: estimating the power of a time domain signal (307); estimating the power distribution on one or more sub-carriers of a frequency domain signal (309) transformed from the time domain signal; and generating a gain control signal for the amplifier based on the estimated power of the time domain signal and the power distribution on sub-carriers of the frequency domain signal (311).Type: ApplicationFiled: December 15, 2008Publication date: October 28, 2010Inventors: Niklas Andgart, Bo Bernhardsson, Fredrik Nordstrom, Leif Wilhelmsson