Interference Or Noise Reduction Patents (Class 375/346)
  • Patent number: 11895059
    Abstract: A guard period for switching between uplink and downlink subframes is created by shortening a downlink subframe, i.e., by not transmitting during one or more symbol intervals at the end of the subframe. A grant message includes signaling indicating when a shortened subframe is being transmitted. An example method is implemented in a receiving node configured to receive data from a transmitting node in subframes having a predetermined number of symbol intervals. In an LTE system, this receiving node may be a UE, and the subframes are downlink subframes. This example method includes determining that a received subframe is to be shortened, relative to the predetermined number of symbol intervals and, in response to this determination, disregarding a last part of the received subframe by disregarding one or more symbols at the end of the received subframe when processing the received subframe.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: February 6, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Henrik Sahlin, Qiang Zhang, Johan Furuskog, Stefan Parkvall
  • Patent number: 11888671
    Abstract: A transmitting apparatus includes a first signal generating unit that generates, on the basis of data a first signal transmitted by single carrier block transmission; a second signal generating unit that generates, on the basis of an RS, a second signal transmitted by orthogonal frequency division multiplex transmission; a switching operator that selects and outputs the second signal in a first transmission period and selects and outputs the first signal in a second transmission period; an antenna that transmits the signal output from the switching operator; and a control-signal generating unit that controls the second signal generating unit such that, in the first transmission period, the RS is arranged in a frequency band allocated for transmission of the RS from the transmitting apparatus among frequency bands usable in OFDM.
    Type: Grant
    Filed: January 6, 2022
    Date of Patent: January 30, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Fumihiro Hasegawa, Akinori Taira
  • Patent number: 11843447
    Abstract: Systems and methods are provided for achieving interference coordination for 5G flight communication. That is, systems and methods are disclosed that improve QoS by implementing interference coordination between nodes, wherein one of the nodes is optimized for flight communication.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: December 12, 2023
    Assignee: AERO5G, INC.
    Inventors: Jun Wang, Bin Liu
  • Patent number: 11817972
    Abstract: A receiver comprising: a processing module configured to: receive a first portion of a packet of received signalling from a first antenna; receive a carrier estimate signal; adjust the first portion based on the carrier estimate signal and correlate the signal with an expected code sequence to provide a first correlated signal; a tracking module configured to: receive the first correlated signal and update the carrier estimate signal, wherein the processing module is further configured to: receive a second portion of the packet from a second antenna; adjust the second portion based on the carrier estimate signal and correlate the signal to provide a second correlated signal, and wherein the receive path further comprises a phase calculation module configured to: receive the first and second correlated signals and determine a respective first and second carrier phase and an angle of arrival of the received signalling.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: November 14, 2023
    Assignee: NXP B.V.
    Inventors: Manuel Lafer, Wolfgang Küchler
  • Patent number: 11811482
    Abstract: A method for sidelink beam acquisition for device to device (D2D) communication includes calculating, by a base station, one or more first directions, where the one or more first directions are directions of a second electronic device located relative to a first electronic device; calculating, by the base station, one or more second directions, where the one or more second directions are directions of the first electronic device located relative to the second electronic device; transmitting, by the base station and to the first electronic device, the one or more first directions; and transmitting, by the base station and to the second electronic device, the one or more second directions.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: November 7, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Pengfei Xia, Bin Liu, Young Hoon Kwon
  • Patent number: 11811439
    Abstract: A mobile communication device that is configured to cancel interference within received millimeter wave band signals. The device includes a receiver circuit that is configured to receive a millimeter wave band signal, adjust gain provided to the millimeter wave band signal at a first amplifier, cancel interference in millimeter wave band signal after gain is adjusted by the first amplifier, and adjust gain provided to the millimeter wave band signal at a second amplifier after interference is cancelled.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: November 7, 2023
    Assignee: Apple Inc.
    Inventors: Mikhail T. Galeev, Oner Orhan, Arnaud Lucres Amadjikpe, Benjamin Grewell, Navid Naderi, Hosein Nikopour, Susruth Sudhakaran, Shilpa Talwar, Liang Xian
  • Patent number: 11785564
    Abstract: A communication system comprises a clock generator configured to generate a plurality of system clock signals used to synchronize components included in each of communication nodes in the communication system based on an external clock signal provided by an external clock source located outside the communication system and a physical layer configured to transmit any one of the generated system clock signals to a small cell communicatively connected to an end communication node of the communication system.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: October 10, 2023
    Assignee: SOLiD, INC.
    Inventors: Donghee Kwon, Hoopyo Hong
  • Patent number: 11770284
    Abstract: Apparatuses, methods, and systems for per carrier scaling of a cancellation pulse of a multi-carrier signal are disclosed. One method includes identifying a target PAPR (peak to average power ratio) for the multi-carrier signal, identifying a target EVM (error vector magnitude) for each of cj carriers of the multi-carrier signal, setting a scaling factor for each of the cj carrier to an initial value, or each carrier cj adjusting the scaling factor for the carrier cj until a measured EVM of the carrier cj satisfies the target EVM for the subcarrier cj while maintaining the PAPR target for the multi-carrier signal, and the cancellation pulse of the multi-carrier signal with the adjusted scaling factor for each of the cj carriers.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: September 26, 2023
    Assignee: Meta Platforms, Inc.
    Inventors: Mohammad Janani, Djordje Tujkovic
  • Patent number: 11757481
    Abstract: Technologies directed to co-channel interference detection using a signal correlation test are described. One method includes receiving a radio frequency (RF) signal and generating digital sample corresponding to the RF signal. The method further includes determining a first correlation coefficient using the digital samples, a first value, and a second value. The first value corresponds to a signal lag parameter and the second value corresponds to a cyclic frequency parameter. The method further includes determining a second correlation coefficient using the digital samples, the first value, and a third value corresponding to the cyclic frequency parameter. The second value and the third value are multiples of a fourth value. The method further includes determining, using the first correlation coefficient and the second correlation coefficient, that first RF signal comprises a first portion from a second communication device and a second portion from a third communication device.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: September 12, 2023
    Assignee: Amazon Technologies, Inc.
    Inventors: Pengfei Xia, Timothy Leo Gallagher, Danijela Cabric
  • Patent number: 11742047
    Abstract: Methods, systems, and devices for shared error correction coding (ECC) circuitry are described. For example, a memory device configured with shared ECC circuitry may be configured to receive data at the shared circuitry from either a host device or a set of memory cells of the memory device. The shared circuitry may be configured to generate a set of multiple syndromes associated with a cyclic error correction code, based on the received data. As part of an encoding process, an encoder circuit may generate a set of parity bits based on the generated syndromes. As part of a decoding process, a decoder circuit may generate an error vector for decoding the received data, based on the generated syndromes. The decoder circuit may also correct one or more errors in the received data based on generating the error vector.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: August 29, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Marco Sforzin, Paolo Amato, Christophe Vincent Antoine Laurent
  • Patent number: 11736140
    Abstract: RF communication systems with interference cancellation for coexistence are provided herein. In certain embodiments, an RF communication system includes a transmitter that transmits a transmit signal through a first front end circuit, a receiver that processes a receive signal from a second front end circuit, and a feedback receiver that processes a feedback signal from the first front end circuit to generate a digital interference cancellation signal that compensates the receiver for interference arising from the transmitter.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: August 22, 2023
    Assignee: Skyworks Solutions, Inc.
    Inventors: David Richard Pehlke, Anand Raghavan, Poul Olesen, Werner Schelmbauer, Thorsten Tracht, Wolfgang Thomann, Amir Israel Rubin, Assi Jakoby, Ofer Benjamin
  • Patent number: 11726166
    Abstract: A full duplex dual polar radar transceiver comprising a dual polarisation radar antenna, a transmission path, a horizontal polarisation receive path, and a vertical polarisation receive path, a first cancellation path connected between the transmission path and the vertical polarisation receive path, and a second cancellation path connected between the transmission path and the horizontal polarisation receive path. Each cancellation path is configured to vary a transmission signal provided by the transmission path by varying at least one of a phase shift, a delay, or an amplitude so as to cancel self-interference on each of the vertical and horizontal polarisation receive paths.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: August 15, 2023
    Assignee: Kabushiki Kaislia Toshiba
    Inventors: Alfred Daniel Wiffen, Gavin Watkins
  • Patent number: 11722339
    Abstract: A pilot information symbol sending method, a channel estimation method, and a communications device. The method includes: determining, based on a discrete Fourier transform DFT matrix and a sensing matrix, a pilot information symbol corresponding to each antenna on each pilot resource; and sending a corresponding pilot information symbol on each of the pilot resources for each of the antennas; where the sensing matrix is determined through training of channel information.
    Type: Grant
    Filed: November 14, 2022
    Date of Patent: August 8, 2023
    Assignee: VIVO MOBILE COMMUNICATION CO., LTD.
    Inventors: Jianjun Li, Yang Song, Fei Qin
  • Patent number: 11705628
    Abstract: 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: Grant
    Filed: December 8, 2021
    Date of Patent: July 18, 2023
    Assignee: Ademco Inc.
    Inventor: Michal Pokorny
  • Patent number: 11700157
    Abstract: A tracking and rejection filter for use in a receiver of a radio includes a selectable filter configured to provide an output digital in-phase signal and an output digital quadrature signal based on a center frequency, a digital in-phase signal corresponding to an in-phase component of a received radio frequency signal, and a digital quadrature signal corresponding to a quadrature component of the received radio frequency signal. The tracking and rejection filter includes a select circuit configured to select the center frequency of the 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 an instantaneous frequency signal. The instantaneous frequency signal is based on the digital in-phase signal and the digital quadrature signal.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: July 11, 2023
    Assignee: Skyworks Solutions, Inc.
    Inventor: Alexander August Arthur Hakkola
  • Patent number: 11693121
    Abstract: A method and a function for checking the integrity of the processing of a radionavigation signal emitted by a satellite, the signal being received by a receiver comprising reception means and processing means, the processing means comprising a linear anti-interference filter, the integrity checking method comprising at least a first phase of detection of a risk of false lock-on comprising the following steps: a step of recovery of a nominal theoretical self-correlation function of the received signal not processed by the linear anti-interference filter; a step of determination of a mean theoretical self-correlation function of the signal received and processed by the linear anti-interference filter over a defined integration period; a step of determination of the number of local maxima of the modulus or of the modulus squared of the mean theoretical self-correlation function, a risk of false lock-on being detected if the number of local maxima is greater than or equal to two.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: July 4, 2023
    Assignee: THALES
    Inventors: Nicolas Martin, Daniel Millwood, Stéphane Rollet
  • Patent number: 11688410
    Abstract: Example operations may include determining a first noise estimate of noise that propagates along a receive path of a device. The operations may further include determining a second noise estimate of the noise and determining a cross-relationship estimate with respect to the noise. In addition, the operations may include adjusting one or more correction filters configured to correct for imbalances between a first branch and a second branch of the receive path. The adjusting may be based on the first noise estimate, the second noise estimate, and the cross-relationship estimate.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: June 27, 2023
    Assignee: MaxLinear, Inc.
    Inventors: Reza Hoshyar, Hossein Dehghan, Abhishek Kumar Agrawal, Kapil Gulati, Eugenio Rivera Ramos, Shivashankar Beesanahalli, Georgy Gilyarovskiy
  • Patent number: 11689349
    Abstract: A Bluetooth receiver has an RF front end which has a gain control input, the RF front end converting wireless packets into a baseband signal which is coupled to the input of an analog to digital converter (ADC). A clock generator provides a clock coupled to the ADC, and an AGC processor performs an AGC process to provide a gain which places the baseband symbols in a range that is less than 90% of the input dynamic range of the ADC. When in a connected state, the clock generator provides a clock which is slower than is required to complete the AGC process during a preamble interval, and the AGC process uses a few initial bits of the address field. The remaining bits of the address field is compared with the corresponding address bits of the receiver to determine whether to receive the packet.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: June 27, 2023
    Assignee: Silicon Laboratories Inc.
    Inventor: Sriram Mudulodu
  • Patent number: 11665041
    Abstract: 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: Grant
    Filed: June 14, 2021
    Date of Patent: May 30, 2023
    Assignee: Cohere Technologies, Inc.
    Inventors: Ronny Hadani, Shlomo Selim Rakib
  • Patent number: 11658616
    Abstract: A frontend circuit for a radio frequency (RF) receiver comprises an RF amplifier circuit to receive an RF signal, a local oscillator (LO) circuit to produce a LO signal, a mixer circuit configured to mix the RF signal with the LO signal to produce a down-converted intermediate frequency (IF) signal, a transimpedance amplifier (TIA) circuit to receive the IF signal, and an error reduction circuit operatively coupled to the TIA circuit and configured to reduce voltage error caused by error charge from parasitic capacitance of the frontend circuit.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: May 23, 2023
    Assignee: Analog Devices International Unlimited Company
    Inventor: Debopam Banerjee
  • Patent number: 11652557
    Abstract: Aspects of the present disclosure include methods for communication using a MIMO channel, such as an acoustic channel for underwater communication. An acoustic receiver may receive a signal comprising information encoded in at least one transmitted symbol. Using a two-layer iterative process, the at least one transmitted symbol is estimated. The first layer of the two-layer process uses iterative exchanges of soft-decisions between an adaptive turbo equalizer and a MAP decoder. The second layer of the two-layer process uses a data-reuse procedure that adapts an equalizer vector of both a feedforward filter and a serial interference cancellation filter of the adaptive turbo equalizer using a posteriori soft decisions of the at least one transmitted symbol. After a plurality of iterations, a hard decision of the bits encoded on the at least one transmitted symbol is output from the MAP decoder.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: May 16, 2023
    Assignee: UNIVERSITY OF MISSOURI
    Inventors: Yahong Rosa Zheng, Weimin Duan, Chengshan Xiao
  • Patent number: 11651131
    Abstract: Glitch source identification and ranking is provided by: identifying a plurality of glitch sources in a circuit layout; back referencing the plurality of glitch sources to corresponding lines in a Resistor Transistor Logic (RTL) file defining the plurality of glitch sources; identifying, in the circuit layout, a plurality of glitch terminuses associated with the plurality of glitch sources; determining a plurality of glitch power consumption values associated with the plurality of glitch sources based on fanouts in the circuit layout extending from the plurality of glitch sources to the plurality of glitch terminuses; ranking, by a processor, the plurality of glitch sources based on corresponding glitch power consumption values of the plurality of glitch power consumption values corresponding to individual glitch sources of the plurality of glitch sources; and reporting the corresponding lines in the RTL file associated with the ranked plurality of glitch sources.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: May 16, 2023
    Assignee: Synopsys, Inc.
    Inventors: Vaibhav Jain, Solaiman Rahim, Myunghoon Yoon, Qing Su
  • Patent number: 11641426
    Abstract: A USB phone supporting multi-device conference application includes: a touch display module, an audio processing module, a digital enhanced cordless telecommunications (DECT) module, a Bluetooth module, a USB interface, and an MCU controller. The Bluetooth module is configured to establish a Bluetooth communication connection with an external Bluetooth terminal; the USB interface is configured to establish a USB communication connection with an external intelligent terminal; the DECT module is configured to establish a communication connection with an external wireless headphone; the touch display module is configured to display data, and recognize and obtain a touch operation instruction; the audio processing module is configured to perform audio processing on received audio data; the MCU controller is configured to process received data, further provided with a first mixer and connected to the touch display module, the audio processing module, the DECT module, the Bluetooth module, and the USB interface.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: May 2, 2023
    Assignee: YEALINK (XIAMEN) NETWORK TECHNOLOGY CO., LTD.
    Inventors: Yingkun Chu, Yun Liao
  • Patent number: 11636868
    Abstract: An audio processing method includes: converting a time-domain audio signal into a frequency-domain audio signal; determining a noise reduction gain according to the frequency-domain audio signal; and selecting at least one set of time-domain filter coefficients from a plurality sets of time-domain filter coefficients according to the noise reduction gain; configuring a time-domain filter according to the at least one selected set of time-domain filter coefficients, and filtering the time-domain audio signal with the time-domain filter.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: April 25, 2023
    Assignee: Realtek Semiconductor Corp.
    Inventor: Wei-Hung He
  • Patent number: 11637639
    Abstract: Methods and systems for a passive noise dampener. A system includes a hybrid fiber-coaxial network which carries content signals between a service provider system and premises, where the hybrid fiber-coaxial network is susceptible to receiving wireless noise signals, a plurality of passive noise dampeners, each passive noise dampener connected between the hybrid fiber-coaxial network and a premise of the premises. Each passive noise dampener includes an antenna based on medium used in the hybrid fiber-coaxial network. The antenna receives the wireless noise signals. A phase shifting device phase shifts 180 degrees phase shift the wireless noise signals received by the antenna to generate a counter signal. A directional coupler injects the counter signal into the hybrid fiber-coaxial network to mitigate impact of the wireless noise signals received by the hybrid fiber-coaxial network on the content signals. The antenna, the phase shifting device, and the directional coupler are passive devices.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: April 25, 2023
    Assignee: Charter Communications Operating, LLC
    Inventor: Michael David Dionne
  • Patent number: 11630185
    Abstract: A method for calibrating a cascaded radar system includes transmitting first radar transmission signal from a radar device. First radar reflection signals corresponding to the respective first radar transmission signal reflected from calibration target are received at each of the radar devices. The first radar reflection signals are demodulated to generate first baseband signals at each of the radar devices. A second radar transmission signal is modulated with respect to the first radar transmission signal at the respective one of the radar devices. The second radar transmission signal is transmitted from the respective one of the radar devices and are received as second radar reflection signals at each of the radar devices. The second radar reflection signals are demodulated to generate second baseband signals at each of the radar devices, and each of the radar devices are calibrated based on the first and second baseband signals.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: April 18, 2023
    Assignee: Texas Instruments Incorporated
    Inventors: Karthik Subburaj, Vashishth Dudhia, Shailesh Joshi
  • Patent number: 11627543
    Abstract: 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: Grant
    Filed: September 3, 2021
    Date of Patent: April 11, 2023
    Assignee: SAMSUNG ELECTRONICS CO, LTD.
    Inventors: Dahae Chong, Haechul Lee, Joohyun Do, Myungjoon Shim, Sungyoon Cho
  • Patent number: 11611425
    Abstract: A Bluetooth receiver has an RF front end which has a gain control input, the RF front end converting wireless packets into a baseband signal which is coupled to the input of an analog to digital converter (ADC). A clock generator provides a clock coupled to the ADC, and an AGC processor performs an AGC process to provide a gain which places the baseband symbols in a range that is less than 90% of the input dynamic range of the ADC. When in a connected state, the clock generator provides a clock which is slower than is required to complete the AGC process during a preamble interval, and the AGC process uses a few initial bits of the address field. The remaining bits of the address field is compared with the corresponding address bits of the receiver to determine whether to receive the packet.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: March 21, 2023
    Assignee: Silicon Laboratories Inc.
    Inventor: Sriram Mudulodu
  • Patent number: 11582035
    Abstract: A method for generating a secret key at a first node for data communication between the first node and a second node. A channel estimate of a communication channel between the first and second nodes is obtained. A time-frequency matrix associated with the communication channel is then obtained based on the time-frequency transformation of the channel estimate. The secret key is then produced based on the time-frequency matrix. Furthermore, a corresponding key generator may be provided for generating a secret key.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: February 14, 2023
    Assignee: Agency for Science, Technology and Research
    Inventors: Duy Hieu Nguyen, Sumei Sun, Yong Dong Wu, Boon Shyang Lim
  • Patent number: 11563620
    Abstract: Methods, systems, and devices for wireless communications are described that support a single carrier multi-level coding (MLC) amplitude phase shift keying (APSK) modulated waveform. For example, a user equipment (UE) capable to communicate using MLC APSK modulated waveforms may transmit a channel state information (CSI) report, including a recommendation for a waveform configuration, to a base station. The base station may receive the CSI report and may transmit a configuration message to the UE, which may configure the UE with a set of waveform parameters associated with MLC APSK modulation. The UE may receive the configuration message and may communicate with the base station using MLC APSK modulated waveforms and based on the set of waveform parameters, which may reduce phase noise and provide lower peak average power ratio (PAPR) signaling.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: January 24, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Daniel Paz, Michael Levitsky, Assaf Touboul
  • Patent number: 11563514
    Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a network may schedule a user equipment (UE) for multiple transmission/reception point (TRP) communication. The network may transmit a single downlink control information (DCI) message to the UE to dynamically configure multiple transmission configuration indicator (TCI) states for the multiple TRPs. In a first example, the DCI message may include a bit field indicating a set of antenna ports and the multi-TRP scheme for transmission. In a second example, the DCI message may include a separate field indicating the multi-TRP scheme (e.g., based on UE capabilities). In a third example, the DCI may indicate redundancy versions (RVs) for different TRPs in an RV field or across multiple fields. In a fourth example, the DCI may include an indication of a precoding resource block group (PRG) size that may be interpreted differently based on the indicated multi-TRP scheme.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: January 24, 2023
    Assignee: QUALCOMM INCORPORATED
    Inventors: Mostafa Khoshnevisan, Xiaoxia Zhang, Jing Sun, Tao Luo, Arumugam Chendamarai Kannan
  • Patent number: 11533148
    Abstract: A communication device (20) includes a processing unit (232) that performs a NOMA transmission process on a partial range of transmission data to be transmitted to another communication device (40), the NOMA transmission process being signal processing for non-orthogonal multiple access, and a transmitting unit (235) that transmits data obtained after the NOMA transmission process to the another communication device.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: December 20, 2022
    Assignee: SONY CORPORATION
    Inventors: Hiroki Matsuda, Naoki Kusashima
  • Patent number: 11490396
    Abstract: A communication apparatus that performs wireless communication obtains information of a channel with a possibility of interference in wireless communication that is output based on position information of the communication apparatus, position information of a source of a radio wave which has a possibility of interference in the wireless communication, and time information, and selects a channel to be used in the wireless communication. Whether a channel corresponding to the obtained channel information is the currently selected channel is determined, and the currently selected channel is changed to a channel other than the channel corresponding to the obtained channel information if the channel corresponding to the obtained channel information is the same channel as the currently selected channel. If communication is being performed, it is determined after the communication whether the channel corresponding to the obtained channel information is the same channel as the currently selected channel.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: November 1, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Keigo Tsuchiya, Ayumi Kabata
  • Patent number: 11483024
    Abstract: An Ethernet physical layer (PHY) transceiver includes a transmitter and a receiver. The transmitter is configured to precode a first data stream by summing two or more mutually-delayed replicas of the first data stream, and to transmit the precoded first data stream over a full-duplex wired channel to a peer Ethernet PHY transceiver. The receiver is configured to receive a second data stream from the peer Ethernet PHY transceiver over the full-duplex wired channel, and to decode the received second data stream while the transmitter concurrently is transmitting the precoded first data stream.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: October 25, 2022
    Assignee: MARVELL ASIA PTE LTD
    Inventors: Shaoan Dai, Xing Wu, Mats Oberg
  • Patent number: 11483184
    Abstract: Some embodiments include apparatus having multiple samplers in a decision feedback equalizer (DFE). The multiple samplers include at least two samplers and are configured to be activated in a first mode of the DFE to receive first input information from a summing circuit. At least one of the samplers is configured to be deactivated in a second mode of the DFE. At least one of the samplers is configured to be activated in the second mode of the DFE to receive second input information from the summing circuit.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: October 25, 2022
    Assignee: Intel Corporation
    Inventors: Yikui Dong, Shenggao Li
  • Patent number: 11474044
    Abstract: Devices and methods for determining the cumulative distribution of a polymer property in a reactor without physical separation of reaction subcomponents. The device includes a means of measuring an instantaneous property of the polymers being produced in a reaction vessel a plurality of times during a polymerization reaction as well as a means of determining the corresponding change in polymer concentration in the reaction vessel between measurements of the instantaneous polymer property The device also includes a means of computing a statistical distribution appropriate to the polymer characteristic and applying the statistical distribution to a recently measured instantaneous value of the polymer property so as to have an instantaneous distribution of the polymer property and a means of adding together the instantaneous distributions of the polymer property in order to obtain the cumulative distribution of the polymer property in the reactor.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: October 18, 2022
    Assignees: ADVANCED POLYMER MONITORING TECHNOLOGIES, INC., THE ADMINISTRATORS OF THE TULANE EDUCATIONAL FUND
    Inventors: Wayne Frederick Reed, Rick D. Montgomery, Michael Felix Drenski, Aide Wu
  • Patent number: 11456818
    Abstract: The invention belongs to the field of low-power consumption Bluetooth technology in wireless communication, in particular to a method for improving the sensitivity of the receiver in a low-power consumption Bluetooth system. The method of the invention is to introduce a deinterleaver between the symbol pattern mapper and GFSK modulator of the transmitting terminal under the low-power consumption Bluetooth coding mode, which is used to perform additional processing on the bitstream data and then perform modulation; then, due to the introduction of interleaving, Turbo iterative processing of demodulation and decoding can be performed at the receiving terminal; the receiving terminal comprises a Turbo iterative demodulator and decoder, which is used to model the low-power consumption Bluetooth GFSK modulator and convolutional coder into finite state machines, and then combine the deinterleaver to use the BCJR algorithm for iterative demodulation and decoding.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: September 27, 2022
    Assignee: FUDAN UNIVERSITY
    Inventors: Yi Jiang, Jie Yang, Qinghe Du, Rui Wang, Wei Zhang, Fengjie Li
  • Patent number: 11456897
    Abstract: A communication apparatus 300 includes a first channel estimating unit 131 configured to perform a first channel estimation at a first frequency using a reference signal included in a signal sequence, a first weight information generating unit 133 configured to generate first weight information based on the first channel estimation, a synthesis processing unit 135 configured to perform weighted synthesis processing based on the first weight information, a second channel estimating unit 137 configured to perform a second channel estimation at a second frequency higher than the first frequency using a reference signal included in the signal sequence subjected to the weighted synthesis processing, a second weight information generating unit 139 configured to generate second weight information based on the second channel estimation, and a demodulation processing unit 141 configured to perform demodulation processing of the signal sequence subjected to the weighted synthesis processing based on the second weight i
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: September 27, 2022
    Assignee: NEC CORPORATION
    Inventor: Motoya Iwasaki
  • Patent number: 11438046
    Abstract: A method of performing channel estimation in a multiple-input-multiple-output (MIMO) communication system comprising a downlink device and an uplink device arranged to communicate over a communication channel, the method including at the uplink device: analyzing a first channel vector representing channel gains between the downlink device and a first antenna of the uplink device in the angular domain to identify a set of angular domain support points; generating from the set of angular domain support points a value vector; and feeding back from the uplink device to the downlink device an indication of the value vector; and at the downlink device: analyzing a second channel vector representing channel gains between the downlink device and a second antenna of the uplink device; generating a transmit steering matrix; and generating an estimate of the first channel vector.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: September 6, 2022
    Assignee: British Telecommunications Public Limited Company
    Inventors: Linglong Dai, Jingbo Tan, Bichai Wang, Richard MacKenzie, Mo Hao
  • Patent number: 11432369
    Abstract: A user equipment (UE) can include processing circuitry coupled to memory. To configure the UE for New Radio (NR) communications above a 52.6 GHz carrier frequency, the processing circuitry is to decode radio resource control (RRC) signaling to obtain a cyclic shift value in time domain. The cyclic shift value is associated with a demodulation reference signal (DM-RS) antenna port (AP) of a plurality of available DM-RS APs. A single carrier based waveform DM-RS sequence corresponding to the DM-RS AP is generated using a base sequence and the cyclic shift value. The single carrier based waveform DM-RS sequence is encoded with uplink data for transmission to a base station using a physical uplink shared channel (PUSCH) using a carrier above the 52.6 GHz carrier frequency.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: August 30, 2022
    Assignee: Apple Inc.
    Inventors: Gang Xiong, Yushu Zhang, Dae Won Lee, Alexei Vladimirovich Davydov, Seunghee Han, Jie Zhu, Dmitry Belov, Debdeep Chatterjee, Andrey Chervyakov, Fatemeh Hamidi-Sepehr, Hong He, Toufiqul Islam, Jeongho Jeon, Alexey Vladimirovich Khoryaev, Lopamudra Kundu, Yongjun Kwak, Jose Armando Oviedo, Sergey Panteleev, Mikhail Shilov, Sergey Sosnin, Salvatore Talarico, Jan Zaleski
  • Patent number: 11431367
    Abstract: The present invention relates to a system for cancelling interference in a full-duplex wireline communication link. The communication link has a transceiver at each end and configured to transmit a signal and receive a signal. The transceiver comprises: a self-interference (SI) canceller module configured to subtract self-interference of the signal transmitted by the transceiver from the signal received by the same transceiver in analog domain; and an echo canceller module configured to subtract reflected version of the signal transmitted by the transceiver from the signal received by the same transceiver in analog domain.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: August 30, 2022
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY, BOMBAY
    Inventors: Shalabh Gupta, Pranav Agarwal, Sandeep Goyal
  • Patent number: 11418286
    Abstract: Implementations of this disclosure generally may relate to the field of wireless communications. More specifically, implementations described in this disclosure relate to different 3GPP LTE and LTE-A system enhancements to address the issue and support reliable V2X operation in the high mobility environments. Several solutions to improve the V2X system performance in the high mobility vehicular channel propagation conditions are described. Some aspects relate to the suggestion of a new DMRS patterns within individual subframes that promote more accurate CFO estimation. Moreover, another aspect provides DMRS mapping or puncturing patterns to transmit individual DMRS in a periodic pattern on respective OFDM/SC-FDMA symbols so that they do not occupy all REs of the OFDM/SC-FDMA symbols, respectively.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: August 16, 2022
    Assignee: Apple Inc.
    Inventors: Andrey Chervyakov, Alexey Khoryaev, Dmitry Belov, Mikhail Shilov, Sergey Sosnin
  • Patent number: 11418310
    Abstract: A method for operating a communications controller adapted for full duplex (FD) operation includes receiving a measurement report from a user equipment served by the communications controller, the measurement report indicating a first power margin between a current transmit power and a transmit power break point and a second power margin between the current transmit power and a maximum transmit power capable of supporting FD operation, performing FD link adaptation (LA) in accordance with the first power margin and the second power margin to adjust one or more FD configuration parameters of a link between the communications controller and the user equipment, wherein the link includes a downlink and an uplink, and instructing the user equipment to communicate over the link in accordance with the one or more FD configuration parameters.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: August 16, 2022
    Assignee: Futurewei Technologies, Inc.
    Inventors: Bin Liu, Richard Stirling-Gallacher, Jian Wang, Lili Zhang
  • Patent number: 11402485
    Abstract: A system and method is disclosed where an operating state may be determined by selecting one or more transmitting nodes for transmitting one or more radio-frequency (RF) signals. One or more receiving nodes may receive the one or more RF signals that may include one or more channel state data. The operating state may be determined based on one or more features extracted from the one or more channel state data. Another system and method is disclosed where a range compensation value may be determined by transmitting a radio-frequency (RF) signal from at least one transmitting node. The one or more receiving nodes may receive the RF signal and a channel state data may be estimated using the signal. The range compensation value may be determined using the channel state data and a position value indicating a location of the at least one transmitting node.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: August 2, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Vivek Jain, Sushanta Mohan Rakshit, Yunze Zeng
  • Patent number: 11387871
    Abstract: A technique is provided including at least obtaining a noise and interference covariance matrix, performing scaling of the noise and interference covariance matrix, determining a sum of diagonal elements of the scaled noise and interference covariance matrix, performing a first spectral shift by the sum to the scaled noise and interference covariance matrix to obtain a first spectral shifted matrix, performing eigenvalue decomposition to the first spectral shifted matrix to obtain an eigenvalue matrix, performing a second spectral shift by the sum to the eigenvalue matrix, limiting the eigenvalue matrix to a diagonal matrix, and obtaining a new noise and interference covariance matrix adding the scaled noise and interference covariance matrix and eigenvalue pairs that are obtained based, at least partly, on the performed eigenvalue decomposition.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: July 12, 2022
    Assignee: Nokia Technologies Oy
    Inventors: Olli Piirainen, Jaakko Vihriälä, Ori Shental, Sivarama Venkatesan, Juha Myllylä
  • Patent number: 11372081
    Abstract: 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: Grant
    Filed: December 27, 2019
    Date of Patent: June 28, 2022
    Assignee: INTEL CORPORATION
    Inventors: Mark A. Lehne, Dan Ohev Zion, Alon Cohen, Arnaud Amadjikpe
  • Patent number: 11374599
    Abstract: 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: Grant
    Filed: October 23, 2017
    Date of Patent: June 28, 2022
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Tanbir Haque, Peter R. Kinget, Matthew W. Bajor
  • Patent number: 11346884
    Abstract: 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: Grant
    Filed: November 22, 2019
    Date of Patent: May 31, 2022
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Adrian Ispas, Julian Leyh
  • Patent number: 11296816
    Abstract: 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: Grant
    Filed: August 13, 2020
    Date of Patent: April 5, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Farrokh Etezadi, Hyukjoon Kwon, Jooyeol Yang
  • Patent number: 11295083
    Abstract: 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: Grant
    Filed: September 26, 2018
    Date of Patent: April 5, 2022
    Assignee: Amazon Technologies, Inc.
    Inventors: Hyokun Yun, Yaser Al-Onaizan