Interference Or Noise Reduction Patents (Class 375/346)
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Apparatus, system and method of leakage cancellation for multiple input multiple output (MIMO) radar
Patent number: 11372081Abstract: For example, a MIMO radar may include a plurality of Tx chains to process a plurality of digital Tx signals for transmission of a plurality of Tx RF signals; a plurality of Rx chains configured to output a plurality of digital Rx signals based on a plurality of Rx RF signals and a plurality of digital leakage-cancellation signals, wherein an Rx chain of the plurality of Rx chains is configured to output a digital Rx signal based on an Rx RF signal and a digital leakage-cancellation signal corresponding to the Rx chain; and a digital MIMO filter to generate the plurality of digital leakage-cancellation signals based on the plurality of digital Tx signals, the digital MIMO filter configured to generate the digital leakage-cancellation signal corresponding to the Rx chain by applying to the plurality of digital Tx signals a respective plurality of filters corresponding to the Rx chain.Type: GrantFiled: December 27, 2019Date of Patent: June 28, 2022Assignee: INTEL CORPORATIONInventors: Mark A. Lehne, Dan Ohev Zion, Alon Cohen, Arnaud Amadjikpe -
Patent number: 11374599Abstract: Circuits for identifying interferers using compressed-sampling, comprising: a low noise amplifier (LNA); a passive mixer having a first input coupled to an output of the LNA; a local oscillator (LO) source having an output coupled to a second input of the passive mixer; a low pass filter having an input coupled to an output of the passive mixer; an analog-to-digital converter (ADC) having an input coupled to the output of the low pass filter; a digital baseband (DBB) circuit having an input coupled to an output of the ADC; and a compression-sampling digital-signal-processor (DSP) having an input coupled to the output of the DBB circuit, wherein the compression-sampling DSP is configured to output identifiers of frequency locations of interferers, wherein, in a first mode, the LO source outputs a modulated LO signal that is formed by modulating an LO signal with a pseudo-random sequence.Type: GrantFiled: October 23, 2017Date of Patent: June 28, 2022Assignee: The Trustees of Columbia University in the City of New YorkInventors: Tanbir Haque, Peter R. Kinget, Matthew W. Bajor
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Patent number: 11346884Abstract: A signal analysis method is disclosed. The method comprises the following steps: An input signal comprising a symbol sequence is received, wherein the input signal is associated with a first clock signal comprising at least one jitter component. A second clock signal is recovered based on said input signal. At least one jitter parameter is determined that is associated with said at least one jitter component. A jitter signal is reconstructed based on said at least one jitter parameter, wherein said jitter signal is associated with said at least one jitter component. A third clock signal is determined based on said second clock signal and said jitter signal. Further, a measurement instrument is disclosed.Type: GrantFiled: November 22, 2019Date of Patent: May 31, 2022Assignee: Rohde & Schwarz GmbH & Co. KGInventors: Adrian Ispas, Julian Leyh
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Patent number: 11296816Abstract: A method of signal demodulation includes receiving, by a signal receiver, a first signal modulated by a symbol corresponding to a point in a constellation; generating, by the signal receiver and on the basis of the first signal, a modulation estimate; identifying, by the signal receiver and on the basis of the modulation estimate, a row or column of a candidate lookup table, the row or column corresponding to a region of the constellation; reading, by the signal receiver, from the row or column of the candidate lookup table one or more candidate points of the constellation, at least one among the one or more candidate points being more distant, from a center of the region, than a point, in the constellation, not among the one or more candidate points, and demodulating, by the signal receiver and on the basis of the one or more candidate points, the first signal.Type: GrantFiled: August 13, 2020Date of Patent: April 5, 2022Assignee: Samsung Electronics Co., Ltd.Inventors: Farrokh Etezadi, Hyukjoon Kwon, Jooyeol Yang
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Patent number: 11295083Abstract: Techniques for named-entity recognition are described. An exemplary implementation of a method includes extracting character features for each word of the document using a first encoder; extracting word level representations of for each word position using a second encoder, the word level representations being a concatenation of spelling variants; classifying the word level representations according to a first decoder; and outputting the classifications as named-entity labels.Type: GrantFiled: September 26, 2018Date of Patent: April 5, 2022Assignee: Amazon Technologies, Inc.Inventors: Hyokun Yun, Yaser Al-Onaizan
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Patent number: 11291014Abstract: A device, system and method for radio-frequency emissions control is provided. The device comprises: a communication unit configured to communicate via main radio channels and a control channel, the main radio channels contributing to radio-frequency (RF) emissions; and a controller interconnected with the communication unit. The controller is configured to: receive, via the communication unit communicating over the control channel, an RF emissions control command to reduce the RF emissions emitted by the communication unit; and in response to receiving the RF emissions control command, control one or more of the communication unit and activity on the main radio channels to reduce the RF emissions.Type: GrantFiled: December 23, 2019Date of Patent: March 29, 2022Assignee: MOTOROLA SOLUTIONS, INC.Inventors: Robert T. Croswell, Bruce D. Mueller, Rodger W. Caruthers, Duane S. Andres, Randall Brace
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Patent number: 11283536Abstract: A method and a network node (700) serving a first cell in a wireless network, for reducing interference in a second cell caused by transmission of reference signals in the first cell. The network node (700) transmits (7:2) in the first cell a scheduling block where a number of said reference signals are located in predefined resource element positions in the scheduling block, using a time offset relative transmission of a scheduling block in the second cell. Thereby, the impact of interference from a reference signal from one network node will be distributed over several resource elements in the other network node so that the impact in each resource element is reduced, as compared to when all interference from the reference signal hits one single resource element when no time offset is used.Type: GrantFiled: September 15, 2016Date of Patent: March 22, 2022Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: David Sandberg, Mats Åhlander, Ari Kangas
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Patent number: 11277287Abstract: In one example, a communications circuit processes an amplitude modulated signal by using a first circuit having signal paths to process an amplitude modulated signal as represented by an in-phase component and by a quadrature component, and by using a second circuit to discern random noise pulses from the quadrature component of the amplitude modulated signal. In response, the second circuit generates an estimate of overall noise representing the random noise pulses in the amplitude modulated signal. In the above and more specific examples, the random noise pulses may appear as pulses which overlap with, in terms of time and bandwidth of frequency spectrum, information of the amplitude modulated signal, and the first and second circuits may be part of an RF radio receiving the amplitude modulated signal from an antenna.Type: GrantFiled: March 30, 2020Date of Patent: March 15, 2022Assignee: NXP B.V.Inventors: Joris Louis L Luyten, Christophe Marc Macours, Temujin Gautama
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Patent number: 11272382Abstract: Systems, methods, and devices reduce interference experienced by wireless communications devices. Methods include receiving a first signal from a first transceiver, the first signal being compatible with a first communications protocol, and configuring a filter based, at least in part, on the received first signal, the filter being communicatively coupled to a second transceiver collocated in a same wireless communications device as the first transceiver. The methods further include receiving a second signal, the second signal being compatible with a second communications protocol, and filtering the second signal to remove at least some components of the first signal from the second signal, the filtering reducing at least some interference from the first signal with the second signal. The methods also include providing the filtered second signal to the second transceiver.Type: GrantFiled: March 26, 2020Date of Patent: March 8, 2022Assignee: Cypress Semiconductor CorporationInventors: Ankit Sharma, Ayush Sood, Suprojit Mukherjee, Ashok Nimmala, Rajendra Kumar Gundu Rao
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Patent number: 11265032Abstract: A method and apparatus for intermodulation product (IMP) cancellation. In one embodiment, the method comprises: acquiring copies of source signals that create IMPs in a passband of interest; creating copies of the IMPs for use as IMP cancellation signals by either multiplying the source signals together as a series of digital samples such that the multiplied signals create a near real and continuous time copy of the IMPs or creating a sum of the source signals in near real and continuous time and convolving the sum of the source signals with a mathematical model to effectively multiply the signals together to create a copy of the IMPs; adjusting one or both of phase and amplitude of the copies; and using the copies to cancel the IMPs inband of the passband of interest.Type: GrantFiled: July 6, 2020Date of Patent: March 1, 2022Assignee: FINESSE WIRELESS, LLCInventor: Francis J. Smith
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Patent number: 11258643Abstract: In at least one embodiment of the invention, a method for reducing a dynamic range of a received radio frequency signal includes receiving digital IQ signals corresponding to an in-phase component of the received radio frequency signal and a quadrature component of the received radio frequency signal. The method includes demodulating the digital IQ signals to generate an instantaneous frequency signal. The method includes selecting a center frequency of a selectable filter according to whether an interfering signal is detected in a target frequency band of the received radio frequency signal. The center frequency is selected from a predetermined frequency and an estimated center frequency determined using the instantaneous frequency signal. The method includes filtering the digital IQ signals using the selectable filter configured using the center frequency to generate output digital IQ signals.Type: GrantFiled: May 18, 2021Date of Patent: February 22, 2022Assignee: Skyworks Solutions, Inc.Inventor: Alexander August Arthur Hakkola
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Patent number: 11251522Abstract: A radio frequency antenna system is provided and can include a radio printed circuit board, a first antenna element located proximate an edge of the radio printed circuit board, a second antenna element located proximate the edge of the radio printed circuit board, and a cancelation circuit located on the radio printed circuit board and connected to feeding points of the first antenna and the second antenna, wherein the cancelation circuit can provide a cancelation effect at output ports of the cancelation circuit with respect to signals broadcast by the first antenna element and the second antenna element over air.Type: GrantFiled: August 15, 2019Date of Patent: February 15, 2022Assignee: Ademco Inc.Inventor: Michal Pokorny
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Patent number: 11228383Abstract: A system configured to perform a method for estimating external noise in a communication channel between a transmitter and a receiver is described. The method comprises obtaining a measurement of effective noise on decoded symbols at the receiver, the decoded symbols comprising noisy versions of symbols conveyed by a communication signal transmitted over the communication channel. The method further comprises storing a representation of a relationship between the effective noise, external noise in the communication channel, and one or more variable parameters. The method further comprises storing applicable values of the variable parameters, wherein each applicable value is associated with current properties of the transmitter or current properties of the receiver or both. The method further comprises calculating an estimate of the external noise in the communication channel using the effective noise, the applicable values of the variable parameters, and the representation of the relationship.Type: GrantFiled: December 19, 2019Date of Patent: January 18, 2022Assignee: CIENA CORPORATIONInventors: Andrew D. Shiner, David Boertjes, Michael Andrew Reimer, Maurice O'Sullivan
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Patent number: 11219024Abstract: Wireless communication under IEEE 802.11 standards utilizing carrier specific interference mitigation where an AP or UE employs an ultra-wideband tuner to evaluate available spectrum between several communication bands. Rather than being constrained to communicate in a single communication band, the AP and UEs may utilize more than one communication band to communicate with one another. In doing so, the AP and UE search across several bands and measure interference on a carrier-by-carrier basis across those bands. Either of the AP and UE may select a cluster of carriers for communication, where the cluster of carriers may comprise 1) contiguous carriers in a single sub-channel, 2) contiguous carriers spanning across more than one sub-channel, 3) discontinuous carriers in a single sub-channel, or 4) discontinuous carriers spanning across more than one sub-channel. The mapping between a cluster and its carriers can be fixed or reconfigurable.Type: GrantFiled: December 16, 2019Date of Patent: January 4, 2022Assignee: NETGEAR, Inc.Inventor: Michael Clegg
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Patent number: 11218980Abstract: Disclosed are systems, devices and methods for transmission of messages between wireless transceiver devices including fields representing values such as, for example, a range between devices, time of transmission of a message or time of receipt of a previous message. In particular embodiments, message may also comprise fields to express a maximum error in values representing range, time of transmission of a message or time of receipt of a previous message.Type: GrantFiled: June 27, 2018Date of Patent: January 4, 2022Assignee: QUALCOMM IncorporatedInventor: Carlos Horacio Aldana
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Patent number: 11194934Abstract: A new computational machine is invented, called a clock machine, that is a novel alternative to computing machines (digital computers) based on logic gates. In an embodiment, computation is performed with one or more clock machines that use time. In an embodiment, a cryptographic cipher is implemented with random clock machines, constructed from a non-deterministic process, wherein the compiled set of instructions (i.e., the implementation of the cryptographic procedure) is distinct on each device or chip that executes the cryptographic cipher. In an embodiment, by using a different set of clock machines to execute two different instances of the same cryptographic procedure, each execution of a procedure looks different to malware that may try to infect and subvert the cryptographic procedure. This cryptographic process also makes timing attacks more challenging. In an embodiment, a detailed implementation of the Midori cipher with random clock machines is described.Type: GrantFiled: December 2, 2019Date of Patent: December 7, 2021Assignee: Aemea Inc.Inventor: Michael Stephen Fiske
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Patent number: 11177892Abstract: A method of analyzing at least one periodic horizontal impairment component of an input signal is described. The input signal is received that includes at least a periodic horizontal impairment component. The at least one periodic horizontal impairment component is analyzed based on a first model, thereby obtaining a first estimated parameter set for each analyzed periodic horizontal impairment component. The at least one periodic horizontal impairment component is analyzed based on a second model, thereby obtaining a second estimated parameter set for each analyzed periodic horizontal impairment component. The first model is different to the second model. Further, the present disclosure provides a measurement instrument.Type: GrantFiled: May 22, 2020Date of Patent: November 16, 2021Assignee: Rohde & Schwarz GmbH & Co. KGInventors: Adrian Ispas, Julian Leyh
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Patent number: 11152978Abstract: A communication device includes a processing circuit, the processing circuit being configured as: mapping a first information bit part used for a receiving end to a corresponding channel based on a pre-set mapping rule so as to execute spatial modulation with respect to the first information bit part of the receiving end; allocating a transmission power to the receiving end; and controlling the transmission power allocated through a mapped channel to transmit a second information bit part used for the receiving end. In the case of the first information bit parts used for multiple receiving ends being the same, the channels mapped for multiple receiving ends are the same. The multi-user spatial modulation performs spatial modulation for multiple receiving ends at the same time through a multiplexing channel of the transmitting end, improving the additional modulation order and the data transmission rate which can be obtained by each receiving end.Type: GrantFiled: June 24, 2020Date of Patent: October 19, 2021Assignee: SONY CORPORATIONInventors: Xudong Zhu, Zhaocheng Wang, Jianfei Cao
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Patent number: 11152967Abstract: There is provided systems and methods for mitigating interference from an interference signal. In one implementation the system comprises cancellation circuitry configured to: receive a first signal from a first antenna, the first signal comprising an interference component deriving from the interference signal and a desired component deriving from a desired signal; and receive a second signal comprising an interference component deriving from the interference signal and received at one or more of a different antenna or a different frequency to the first signal. The interference component in the second signal is stronger than that the interference component in the first signal. The cancellation circuitry is further configured to derive a cancellation signal from the second signal; generate an output signal by subtracting the cancellation signal from the input signal to substantially remove the interference component from the first signal; and output the output signal.Type: GrantFiled: August 23, 2019Date of Patent: October 19, 2021Assignee: THALES HOLDINGS UK PLCInventors: Gary Dent, Leslie David Westbrook, Sze-Ching Lu, Simon Delaney
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Patent number: 11153133Abstract: An integrated circuit equalizes a data signal expressed as a series of symbols. The symbols form data patterns with different frequency components. By considering these patterns, the integrated circuit can experiment with equalization settings specific to a subset of the frequency components, thereby finding an equalization control setting that optimizes equalization. Optimization can be accomplished by setting the equalizer to maximize symbol amplitude.Type: GrantFiled: November 23, 2020Date of Patent: October 19, 2021Assignee: Rambus Inc.Inventor: Ramin Farjad-Rad
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Patent number: 11112507Abstract: A method may be executed by a base station or mobile device to improve accuracy of a global positioning system (GPS)-based position or “geoposition” of the mobile device. A time-stamped first set of GPS data may be received via a GPS receiver, e.g., of the base station. A second set of GPS data describing a geoposition of the mobile device is received from the mobile device by the base station. A time of collection of the base station and mobile device GPS data coincides. The GPS data includes code phase and pseudo-range data from each of the GPS satellites, and may include carrier phase data. A predetermined GPS position correction technique is used to generate a corrected geoposition of the mobile device using the GPS data. The corrected geoposition is then transmitted to the mobile device and/or an external response system such as a drone or first responder.Type: GrantFiled: August 1, 2017Date of Patent: September 7, 2021Assignee: UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASAInventor: Evan T. Dill
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Patent number: 11115946Abstract: An operating method of a terminal in a wireless communication system including a cell and the terminal includes receiving an external signal including a synchronization signal block (SSB) from the cell, the SSB including a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH), obtaining a cell identification number of the cell using the PSS and the SSS, determining a plurality of decoding priorities of a plurality of candidate indexes of the SSB, and performing decoding on the PBCH based on the plurality of decoding priorities.Type: GrantFiled: November 11, 2019Date of Patent: September 7, 2021Assignee: Samsung Electronics Co., Ltd.Inventors: Dahae Chong, Haechul Lee, Joohyun Do, Myungjoon Shim, Sungyoon Cho
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Patent number: 11112483Abstract: An apparatus, method, or computer-readable storage medium encoded with computer-executable instructions that, when executed by a computer, cause the computer to carry out a method for determining one or more directions of arrival of one or more coherent or incoherent signals with a single radio frequency channel. The apparatus may comprise: a plurality of antenna elements (110) configured to determine the one or more coherent or incoherent signals; a plurality of radio frequency switches (120) configured to selectively activate one or more of the plurality of antenna elements; and a radio frequency combiner (140) configured to combine a plurality of radio frequency signals from one or more selectively activated antenna elements of the plurality of antenna elements.Type: GrantFiled: August 15, 2017Date of Patent: September 7, 2021Assignee: Lockheed Martin CorporationInventor: Tommy Lam
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Patent number: 11108536Abstract: A method for implementing an efficient clock recovery for multilane high-speed Serializer/Deserializer (SerDes) system having M interleaved lanes, has a non-recursive architecture.Type: GrantFiled: March 16, 2020Date of Patent: August 31, 2021Assignee: Mellanox Technologies, Ltd.Inventors: Hananel Faig, David (Dima) Rohlin, Matan Groen
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Patent number: 11082059Abstract: A computer-executable method and system for querying sensor data of a plurality of sensors is provided. Sensor data is received that comprising sensor data values sampled by a first sensor of said plurality of sensors according to a first compressive sampling scheme. The first compressive sampling scheme can be applied by the first sensor within a sampling time window and the received sensor data corresponds to samples of a signal within the sampling time window. The sensor data is stored in a first database. A frequency decomposition of the signal is computed based on a sparsifying transform associated with the first compressive sampling scheme and the received sensor data. The frequency decomposition comprises one or more frequency components. The one or more frequency components are stored in a second database. A query is received from a client. The query specifies an event that indicates a critical signal condition of a signal.Type: GrantFiled: December 30, 2015Date of Patent: August 3, 2021Assignee: Teraki GmbHInventors: Daniel Lampert Richart, Markus Kopf
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Patent number: 11076419Abstract: The present invention relates to a method and an apparatus for transmitting and receiving data in a wireless communication system. The present invention may provide a method comprising the steps of: receiving, from a terminal, an urgent signal indicating the occurrence of an event related to an urgent situation; and transmitting, to at least one terminal included in a cell, a response signal for notifying the at least one terminal of the occurrence of the event.Type: GrantFiled: March 14, 2016Date of Patent: July 27, 2021Assignee: LG ELECTRONICS INC.Inventors: Eunjong Lee, Heejeong Cho, Genebeck Hahn, Ilmu Byun
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Patent number: 11063629Abstract: Various embodiments include techniques for detecting a poor-quality cable associated with a wired communications channel that is causing noise that interferes with a wireless communications channel. The techniques are directed towards a test that a processor performs when the cable is installed in a user system. A wireless test application, executing on one or more processors of the system, determines a noise floor for the wireless communications channel when the wired communications channel is disabled. The wireless test application determines the noise power for the wireless communications channel when the wired communications channel is enabled, thereby causing interference in the wireless communications channel. The wireless test application compares the noise power to the noise floor in order to determine whether the cable is a high-quality cable or a low-quality cable.Type: GrantFiled: October 14, 2020Date of Patent: July 13, 2021Assignee: NVIDIA CorporationInventors: Srirama Bhupatiraju, Tom Winton
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Patent number: 11057061Abstract: Apparatuses and methods for simultaneously operating as a wireless radio and monitoring the local frequency spectrum. For example, described herein are wireless radio devices that use a secondary receiver to monitor frequencies within the operating band and prevent or avoid interferers, including in particular half-IF interferers. The systems, devices, and methods described herein may adjust the intermediate frequency in a superheterodyne receiver to select an intermediate frequency that minimizes interference. In particular, described herein are apparatuses and methods that use a second receiver which is independent of the first receiver and may be connected to the same receiving antenna to monitor the geographically local frequency spectrum and may detect spurious interferers, allowing the primary receiver to adjust the intermediate frequency and avoid spurious interferes.Type: GrantFiled: February 12, 2020Date of Patent: July 6, 2021Assignee: UBIQUITI INC.Inventors: Lance D. Lascari, Robert J. Pera
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Patent number: 11057066Abstract: A filtering arrangement for a wireless communication receiver is disclosed. The filtering arrangement comprises an input port configured to receive a digital signal, wherein the digital signal has a signal bandwidth and comprises a desired signal, dividing circuitry configured to divide the digital signal into two or more signal parts, wherein the two or more signal parts comprise two edge signal parts, and a respective processing branch associated with each of the two or more signal parts. A processing branch configured to process a respective edge signal part comprises a digital edge filter configured to filter the edge signal part, determination circuitry configured to determine whether an un-desired signal is comprised in the edge signal part, and frequency shifting circuitry configured to frequency shift the edge signal part responsive to determination by the determination circuitry. Corresponding wireless communication receiver, filtering method and computer program product are also disclosed.Type: GrantFiled: December 22, 2017Date of Patent: July 6, 2021Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Magnus Nilsson, Peter Jakobsson
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Patent number: 11050458Abstract: A node is provided for a cooperative broadcast multi-hop network that employs broadcast flood routing and multi-hop transmission. The node includes antennas and a waveform module having a receiver processing chain that can include an adaptive space-spectrum whitener (ASSW) module and a multi-user RAKE (mRAKE) receiver. Each antenna can receive output a channel that includes direct-sequence spread-spectrum signals received from other nodes and multi-path components of those transmissions. The ASSW module can perform adaptive space-spectrum whitening to detect and remove interference signals received from each of the channels by performing a covariance analysis to generate channelized signals. The ASSW module can include modified Discrete Fourier Transform (MDFT) analysis and synthesis modules that generate an interference mitigated time-domain channelized signals.Type: GrantFiled: October 23, 2019Date of Patent: June 29, 2021Assignee: General Dynamics Mission Systems, Inc.Inventors: Scott David Blanchard, David Kunil Lee
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Patent number: 11044000Abstract: Embodiments of the present invention disclose a scheduling method, a base station, and a terminal. The method includes: performing, by a base station according to a preset matrix, orthogonal encoding on logical port information corresponding to a downlink reference signal, and mapping the logical port information obtained after the orthogonal encoding to a corresponding physical channel for sending; receiving channel quality indicator information fed back by a terminal, and calculating a spectral efficiency gain obtained after wavelength division multiplexing; and performing, according to the spectral efficiency gain, radio resource scheduling for the wavelength division multiplexing.Type: GrantFiled: August 27, 2019Date of Patent: June 22, 2021Assignee: Huawei Technologies Co., Ltd.Inventor: Pengcheng Zhang
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Patent number: 11038636Abstract: A method for modulating data for transmission within a communication system. The method includes establishing a time-frequency shifting matrix of dimension N×N, wherein N is greater than one. The method further includes combining the time-frequency shifting matrix with a data frame to provide an intermediate data frame. A transformed data matrix is provided by permuting elements of the intermediate data frame. A modulated signal is generated in accordance with elements of the transformed data matrix.Type: GrantFiled: February 18, 2020Date of Patent: June 15, 2021Assignee: Cohere Technologies, Inc.Inventors: Ronny Hadani, Shlomo Selim Rakib
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Patent number: 11026145Abstract: A method and a device for adaptive channel access are disclosed. In an embodiment includes adaptively adjusting, by a small base station (SBS), access parameters for small cells to ensure quality of service (QoS) to cellular users while minimizing collision probability for WiFi users.Type: GrantFiled: April 1, 2019Date of Patent: June 1, 2021Assignee: Huawei Technologies Co., Ltd.Inventor: Amine Maaref
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Patent number: 11012196Abstract: The present disclosure refers to base stations, user equipment and a system for wireless communication, as well as the corresponding wireless communication methods implementing mechanisms enabling fast, reliable and resource efficient retransmissions between a base station and one or a plurality of user equipment. The present disclosure is specifically directed to an uplink unicast case and a downlink multicast case and cooperates a proactive allocation of resources for a retransmission of the initial data in case that the initial data transmission fails, and a new data transmission if the initial data transmission successes.Type: GrantFiled: April 26, 2019Date of Patent: May 18, 2021Assignee: Huawei Technologies Co., Ltd.Inventors: Chan Zhou, Alexandros Kaloxylos, Ramya Panthangi Manjunath
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Patent number: 10999742Abstract: An apparatus is configured to operate in a wireless communications network cell that is operated so as to provide a first transmission band and a second transmission band being separated by a narrow band. The apparatus is configured to transmit a data signal using a frequency band having a center frequency. The center frequency is a frequency of the narrow band. The apparatus is configured to transmit an indicator signal in the frequency band prior to transmitting the data signal so as to indicate the transmission of the data signal.Type: GrantFiled: November 25, 2019Date of Patent: May 4, 2021Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Khaled Shawky Hassan Hussein, Rohit Datta
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Patent number: 10992505Abstract: An apparatus for receiving signals includes a receiver for receiving a time domain signal from a transmitter, wherein at least one first information bit is mapped, resulting in at least one first mapped symbol; at least one second information bit is mapped, resulting in at least one second mapped symbol; the at least one second mapped symbol is multiplied by at least one third information bit; and the time domain signal is generated from the at least one first mapped symbol and the at least one second mapped symbol.Type: GrantFiled: August 5, 2019Date of Patent: April 27, 2021Assignee: Microsoft Technology Licensing, LLCInventors: Yeong Hyeon Kwon, Seung Hee Han, Min Seok Noh, Young Woo Yun
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Patent number: 10965423Abstract: A method for reference signal configuration of a wireless communication system is provided. The method includes the following actions. An uplink channel is received by a base station from a user equipment (UE). A frequency offset and a coherence time effected by a phase noise and a Doppler shift are estimated by the base station in response to the uplink channel. A reference signal format is configured by the base station in response to the frequency offset and the coherence time effected by the phase noise and the Doppler shift. A physical uplink shared channel is configured by the UE in response to the reference signal format.Type: GrantFiled: October 18, 2019Date of Patent: March 30, 2021Assignee: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: Mitsuo Sakamoto
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Patent number: 10966098Abstract: An apparatus is configured to operate in a wireless communications network cell that is operated so as to provide a first transmission band and a second transmission band being separated by a narrow band. The apparatus is configured to transmit a data signal using a frequency band having a center frequency. The center frequency is a frequency of the narrow band. The apparatus is configured to transmit an indicator signal in the frequency band prior to transmitting the data signal so as to indicate the transmission of the data signal.Type: GrantFiled: November 25, 2019Date of Patent: March 30, 2021Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Khaled Shawky Hassan Hussein, Rohit Datta
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Patent number: 10958551Abstract: A jitter determination method for determining at least one random jitter component of an input signal is described, wherein the input signal is generated by a signal source, comprising: receiving the input signal; determining a time interval error associated with the random jitter component; determining at least one statistical moment of the time interval error based on the determined time interval error, wherein the order of the statistical moment is two or larger; at least one of determining an impulse response based on the input signal and receiving the impulse response, the impulse response being associated with at least the signal source; and determining the standard deviation of the random jitter component based on at least one of the determined statistical moment and the determined impulse response. Moreover, a measurement instrument is described.Type: GrantFiled: January 23, 2020Date of Patent: March 23, 2021Assignee: Rohde & Schwarz GmbH & Co. KGInventors: Bernhard Nitsch, Adrian Ispas
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Patent number: 10932266Abstract: A multiple input multiple output network node, an access network node, a computer program and method are disclosed. The method comprises prior to transmitting signals in an unlicensed band: estimating at least one channel within the unlicensed band between at least one access network node operable to transmit in the unlicensed band and the multiple input multiple output network node; determining precoding operations required to generate a null signal beam for the at least one estimated channel; monitoring the unlicensed band using the determined precoding operations. In response to detecting the unlicensed band to be clear of signals: transmitting at least one signal in the unlicensed band with the null beam in place such that no signal is transmitted on the at least one estimated channel.Type: GrantFiled: October 12, 2017Date of Patent: February 23, 2021Assignee: Nokia Technologies OYInventors: David Lopez-Perez, Lorenzo Galati Giordano, Giovanni Geraci, Andrea Bonfante
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Patent number: 10924141Abstract: There is provided a passive intermodulation (PIM) mitigation module for mitigating PIM within a receiver of a wireless network, the PIM mitigation module comprising: at least one processor executing a code for: receiving transmit signals transmitted by at least one transmission source, receiving received signals received by at least one reception source, computing a plurality of synthetic PIM signals from the transmit signals, wherein each of the plurality of synthetic PIM signals is a respective combination of a plurality of frequency components of the transmit signals, computing a plurality of mitigation weights for mitigating the plurality of synthetic PIM signals, and performing a PIM mitigation process on the received signal with the plurality of mitigation weights to generate clean signals to provide to the receiver.Type: GrantFiled: July 15, 2019Date of Patent: February 16, 2021Assignee: Ubiqam Ltd.Inventors: Baruch Cyzs, Oren Amidan, Amir Meir, Daniel Manor
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Systems and methods for creating non-orthogonal dimensionality between signals in electronic devices
Patent number: 10917143Abstract: Systems and methods for creating non-orthogonal dimensionality between signals are disclosed. Signals are received from at least one electronic device. An adjustment of a parameter of a received signal of a first device of the at least one of the electronic device that would result in an adjusted signal that is not orthogonal but differentiates the signal from at least one other signal of the received signals is determined. An instruction is communicated to the first device to implement the adjustment of the parameter.Type: GrantFiled: June 8, 2015Date of Patent: February 9, 2021Assignee: COLLISION COMMUNICATIONS, INC.Inventors: Joseph Farkas, Jared Fry, Barry West -
Patent number: 10911272Abstract: A multi-tap Differential Feedforward Equalizer (DFFE) configuration with both precursor and postcursor taps is provided. The DFFE has reduced noise and/or crosstalk characteristics when compared to a Feedforward Equalizer (FFE) since DFFE uses decision outputs of slicers as inputs to a finite impulse response (FIR) unlike FFE which uses actual analog signal inputs. The digital outputs of the tentative decision slicers are multiplied with tap coefficients to reduce noise. Further, since digital outputs are used as the multiplier inputs, the multipliers effectively work as adders which are less complex to implement. The decisions at the outputs of the tentative decision slicers are tentative and are used in a FIR filter to equalize the signal; the equalized signal may be provided as input to the next stage slicers. The bit-error-rate (BER) of the final stage decisions are lower or better than the BER of the previous stage tentative decisions.Type: GrantFiled: January 13, 2020Date of Patent: February 2, 2021Inventors: Chaitanya Palusa, Rob Abbott, Wei-Li Chen, Po-Hsiang Lan, Dirk Pfaff, Cheng-Hsiang Hsieh
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Patent number: 10897277Abstract: Disclosed herein are a method for estimating a self-interference signal based on iterative estimation and an apparatus for the same. The method is configured to transmit two preamble signals from the transmission antenna of one terminal to the reception antenna thereof, to estimate third-order nonlinear distortion, which distorts a self-interference signal, based on a transmission signal and a reception signal for each of the two preamble signals, to update the reception signal by eliminating the third-order nonlinear distortion therefrom, to re-estimate the third-order nonlinear distortion based on the updated reception signal, and to estimate the self-interference signal based on the final third-order nonlinear distortion, which is acquired by repeatedly re-estimating the third-order nonlinear distortion as many times as a preset number of iterations.Type: GrantFiled: October 5, 2018Date of Patent: January 19, 2021Assignee: Electronics and Telecommunications Research InstituteInventors: Myung-Sun Baek, Joon-Young Jung, Heung-Mook Kim
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Patent number: 10891967Abstract: A method and an apparatus for enhancing speech are provided. The method includes: obtaining time domain speech of multiple channels acquired by a microphone array; generating frequency domain speech of at least one channel based on the time domain speech of the multiple channels; analyzing the frequency domain speech of the at least one channel to obtain a normalized enhancement coefficient of the frequency domain speech of the at least one channel; enhancing the frequency domain speech of the at least one channel by using the normalized enhancement coefficient of the frequency domain speech of the at least one channel to obtain enhanced frequency domain speech of the at least one channel; and performing an inverse Fourier transform on the enhanced frequency domain speech of the at least one channel to obtain enhanced time domain speech of the at least one channel.Type: GrantFiled: December 28, 2018Date of Patent: January 12, 2021Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.Inventors: Chao Li, Jianwei Sun
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Patent number: 10877532Abstract: An energy storage system includes: a host; energy storage modules; a plurality of nodes, each implemented at a corresponding one of the energy storage modules and configured to monitor and control that energy storage module; a communications and data transmission medium forming a loop from a first portion of the host and sequentially through the nodes to a second portion of the host; and in each of the nodes, first and second devices configured to perform at least partially redundant communication and data transmission functions using the communications and data transmission medium.Type: GrantFiled: April 2, 2015Date of Patent: December 29, 2020Assignee: Tesla, Inc.Inventor: Ian C. Dimen
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Patent number: 10880901Abstract: A system that incorporates the subject disclosure may include, for example, a process that includes adjusting a filter in electrical communication between an input terminal and a demodulator. The filter is applied to an information bearing signal, e.g., to mitigate interference, received at the input terminal, resulting in a filtered signal. An error signal is received, indicative of errors detected within information obtained by demodulation of a modulated carrier of the filtered signal. A modified filter state is determined in response to the error signal and the filter is adjusted according to the modified filter state, e.g., to improve mitigation of the interference. Other embodiments are disclosed.Type: GrantFiled: November 18, 2019Date of Patent: December 29, 2020Assignee: ISCO International, LLCInventors: Amr Abdelmonem, Mikhail Galeev, Sean S. Cordone, Howard Wong
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Patent number: 10848229Abstract: Embodiments of the present disclosure relate to methods, devices, apparatuses and computer readable storage media for Uplink Control Information (UCI) design. The method comprises determining, at a terminal device, a matrix comprising a set of non-zero linear combination coefficients for quantizing a channel between the terminal device and a network device, the matrix having spatial components and frequency components; shifting the frequency components of the matrix circularly, such that a target coefficient of the set of non-zero linear combination coefficients is located in a frequency component with a predetermined index of the frequency components in a shifted matrix; generating a first indication indicating the spatial component associated with the target coefficient in the matrix; and transmitting, to the network device, uplink control information comprising the first indication. In this way, a new solution for designing the UCI may reduce the overhead for reporting the parameters in the UCI.Type: GrantFiled: April 2, 2020Date of Patent: November 24, 2020Assignee: Nokia Technologies OyInventors: Filippo Tosato, Marco Maso, Nhat-Quang Nhan, Hao Liu
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Patent number: 10827211Abstract: Aspects of the subject disclosure may include, for example, a device including a processing system including a processor and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, including monitoring network traffic to determine a transmission control protocol traffic pattern, determining a target video rate from the transmission control protocol traffic pattern, and modifying an over-the-top video delivery service network according to the target video rate. Other embodiments are disclosed.Type: GrantFiled: October 10, 2016Date of Patent: November 3, 2020Assignee: AT&T Intellectual Property I, L.P.Inventors: Zhengye Liu, Jin Wang, Yali Liu, Yongdong Zhao
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Patent number: 10812118Abstract: In-band full-duplex (IBFD) wireless systems offer the ability to revolutionize frequency spectrum utilization for future networks. For IBFD systems to work, the self-interference (SI) generated by each wireless node should be sufficiently mitigated, which becomes more challenging as the bandwidth increases. RF cancellation enables this interference reduction but has been limited so far to narrowband operation or restricted to distinctive environments. Fortunately, a photonic-enabled RF canceller can provide broadband interference cancellation using photonic components in a wideband vector modulator architecture with tunable time-delay taps. An example of this canceller with 20 canceller taps provides 25 and 20 dB of cancellation over 500-MHz and 1-GHz instantaneous bandwidths, respectively, and is tunable between 0.5 and 5.5 GHz. This photonic-enabled RF canceller provides the wideband operation and high tap counts for successfully deploying future wireless systems with IBFD technology.Type: GrantFiled: November 16, 2018Date of Patent: October 20, 2020Assignee: Massachusetts Institute of TechnologyInventors: Kenneth E. Kolodziej, Bradley Perry, Siva Yegnanarayanan