Interference Or Noise Reduction Patents (Class 375/346)
  • Patent number: 10848229
    Abstract: 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: Grant
    Filed: April 2, 2020
    Date of Patent: November 24, 2020
    Assignee: Nokia Technologies Oy
    Inventors: Filippo Tosato, Marco Maso, Nhat-Quang Nhan, Hao Liu
  • Patent number: 10827211
    Abstract: 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: Grant
    Filed: October 10, 2016
    Date of Patent: November 3, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Zhengye Liu, Jin Wang, Yali Liu, Yongdong Zhao
  • Patent number: 10812133
    Abstract: A communication device may include a communication interface configured to receive signals and a controller configured to: receive an input signal based on the received signals; perform transform operations on the input signal to generate a spectral periodogram of the input signal; calculate spectral vector powers for each bin of a plurality of bins of the spectral periodogram; determine a median spectral power for a selected range of bins of the plurality of bins; generate a median-scaled spectral density vector based on the median spectral power and a reference spectral density of an expected signal; calculate a detection threshold vector based at least in part on the median-scaled spectral density vector; and identify one or more interference-including bins of the plurality of bins of the spectral periodogram by comparing the spectral vector powers for each bin of the plurality of bins to the detection threshold vector.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: October 20, 2020
    Assignee: Rockwell Collins, Inc.
    Inventor: Carlos J. Chavez
  • Patent number: 10812118
    Abstract: 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: Grant
    Filed: November 16, 2018
    Date of Patent: October 20, 2020
    Assignee: Massachusetts Institute of Technology
    Inventors: Kenneth E. Kolodziej, Bradley Perry, Siva Yegnanarayanan
  • Patent number: 10805117
    Abstract: Embodiments of the present disclosure include an OFDM receiver circuit, which includes an FFT circuit configured to calculate an FFT of a plurality of sample values received by the receiver circuit, and a smoothing circuit configured to identify equalizer coefficients for the sample values by truncating portions of an impulse response of the FFT.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: October 13, 2020
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Hamid Shafiee, Mohsen Pourkhaatoun, Kiran Gowda, Siddharth Shetty, Esmael Heidari, Ali Fard, Rahim Bagheri, Masoud Djafari
  • Patent number: 10805125
    Abstract: An apparatus and a method are provided in which a processor of a receiving apparatus regenerates time domain samples of an interfering data numerology from frequency domain received signals. The processor performs FFT, with a size corresponding to a desired data numerology, on the regenerated time domain samples to generate an interfering numerology cancellation signal. The processor subtracts the interfering numerology cancellation signal from a frequency domain received signal of the desired data numerology.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: October 13, 2020
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hamed Maleki, Pranav Dayal, Kee-Bong Song
  • Patent number: 10805014
    Abstract: Improving a status of a wireless signal includes a display, a wireless transceiver, a processor and memory to monitor a status of a wireless signal of the wireless transceiver and a Basic Input Output System (BIOS) to, in response to the status indicating a degradation of the wireless signal and receiving a command to improve the status of the wireless signal, modify a parameter of an enhanced display port (eDP) signal of the display to reduce interference with the wireless signal generated by the display of the computer.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: October 13, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ming-Shien Tsai, Chang-Cheng Hsieh, Tzu-Chiang Cheng
  • Patent number: 10797852
    Abstract: A method of frame synchronization comprises receiving a stream of bits, the stream comprising a sequence of frames, wherein each frame comprises a frame counter value representing the number of the frame in the sequence, and frame check bits for checking the validity of the frame counter value. The method comprises decoding a first section of bits, and trailing a first portion of the first section of bits as a trial counter value, and a second portion of the first section of bits as trial check bits. The method comprises checking if the trial counter value corresponds to a valid frame counter value using the trial check bits, and synchronizing based on whether the trial counter value is determined to correspond to a valid frame counter value.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: October 6, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Roberto Pacchetti, Davide Sanguinetti
  • Patent number: 10790929
    Abstract: A system and method for receiving a quadrature amplitude modulation symbol. In some embodiments, the symbol has a plurality of bits and is associated with a point in a constellation of quadrature amplitude modulation points, each point of the constellation having associated with it a binary word. The method includes receiving a first analog signal carrying a modulation; performing initial estimation, to generate a first initial modulation estimate, for a portion of the first analog signal carrying a modulation; identifying, based on the first initial modulation estimate, a row of an initial candidate lookup table, the row corresponding to a region of the constellation; and reading from the row of the initial candidate lookup table a first plurality of initial candidate points of the constellation.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: September 29, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Farrokh Etezadi, Hyukjoon Kwon, Jooyeol Yang
  • Patent number: 10784910
    Abstract: Embodiments of the present invention include a system, method and computer program product for mitigating interference in data received by a multiple antenna array. Processor(s) executing program code identify signals from users, including active users, and by identifying these signals, mitigate interference and jamming in the received data, overall.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: September 22, 2020
    Assignee: Perspecta Labs Inc.
    Inventors: Nicholas Chang, Joseph C. Liberti
  • Patent number: 10784697
    Abstract: A vehicle power supply control method includes switching, when a constant voltage is required of a power supply circuit in generating electric power by a power generator, the power supply circuit being connected to a primary storage battery and configured to be connected to a secondary storage battery that has a lower internal resistance than that of the primary storage battery, between connection of the secondary storage battery to the power supply circuit and disconnection of the secondary storage battery from the power supply circuit depending on the required constant voltage, current output to the power supply circuit by the power generator, and a state of charge of the secondary storage battery.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: September 22, 2020
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Akifumi Koishi, Masahiko Tahara, Atsushi Tezuka, Tomoyuki Koike, Munemitsu Watanabe, Terumasa Tsuchiya
  • Patent number: 10778553
    Abstract: A jitter determination method for determining at least one jitter component of a data signal is disclosed.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: September 15, 2020
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Andreas Maier, Bendix Koopmann
  • Patent number: 10771100
    Abstract: A method of operation for an Ethernet transceiver is disclosed. The method includes entering a fast retrain sequence of steps. The fast retrain sequence of steps includes transferring two-level symbols to a link partner; and directly following transferring of the two-level symbols, transferring multi-level symbols to the link partner, the multi-level symbols having greater than two symbol levels.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: September 8, 2020
    Assignee: Marvell Asia Pte., LTD.
    Inventors: Seid Alireza Razavi Majomard, Hossein Sedarat, Dragan Labalo
  • Patent number: 10764886
    Abstract: A data transmission method, a wireless network device, and a communications system are provided. The method includes: sending, by a first wireless network device, at least two channels for common information on a same carrier, where the at least two channels for common information include a first channel for common information and a second channel for common information, the first channel for common information and the second channel for common information are on different subbands of the same carrier, and the common information includes at least one of a synchronization signal, a broadcast signal, or a system message.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: September 1, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yuanjie Li, Ting Wang, Lixia Xue
  • Patent number: 10749555
    Abstract: A system, method, and electronic device for compensating in-phase (I) and quadrature (Q) mismatch (IQMM) are herein disclosed. The system includes an IQ mismatch compensator (IQMC) configured to compensate for IQMM between a time-domain I signal and a time-domain Q signal using filter weight coefficients, and output a compensated I signal and a compensated Q signal, a fast Fourier transformation (FFT) circuit configured to perform an FFT on the compensated I signal and the compensated Q signal to a frequency-domain compensated signal, and a coefficient updater configured to update the filter weight coefficients based on a frequency-domain observation of the frequency-domain compensated signal.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: August 18, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Elina Nayebi, Pranav Dayal, Kee-Bong Song
  • Patent number: 10736074
    Abstract: Techniques are provided for positioning of a mobile device in a wireless network using directional positioning reference signals (PRS), also referred to as PRS beamforming. In an example method, a plurality of directional PRSs are generated for at least one cell for a base station, such that each of the plurality of directional PRSs comprises at least one signal characteristic and a direction of transmission, either or both of which may be distinct or unique. The plurality of directional PRSs is transmitted within the at least one cell, such that each of the plurality of directional PRSs is transmitted in the direction of transmission. A mobile device may acquire and measure at least one of the directional PRSs which may be identified using the associated signal characteristic. The measurement may be used to assist position methods such as OTDOA and ECID and to mitigate multipath.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: August 4, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Stephen William Edge, Sven Fischer, Rayman Pon
  • Patent number: 10720947
    Abstract: Methods, systems, and devices for wireless communications are described. A device, which may be otherwise known as user equipment (UE), may support spurious emission attenuation. A device may determine, based on a first frequency scan on a radio frequency (RF) spectrum band, that a signal strength of a signal at a frequency of the RF spectrum band satisfies a threshold. The device may perform, based on the first frequency scan on the RF spectrum band, a second frequency scan on the RF spectrum band to determine whether the signal strength of the signal at the frequency of the RF spectrum band satisfies the threshold during the second frequency scan. Subsequently, the device may determine that the signal is a spurious emission at the frequency based on the signal strength of the signal, and configure a notch filter for mitigating the spurious emission at the frequency.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: July 21, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Ravisankar Regadamilli, Rahul Shailesh Gaikwad
  • Patent number: 10708796
    Abstract: A base station may determine a Doppler metric associated with a wireless channel and a user equipment (UE). The Doppler metric may be determined from received information related to Doppler effects measured by the UE or from directly measured Doppler effects associated with uplink data received from the UE. Based on the determined Doppler metric, the base station may select one or both of a reference signal (RS) density and a channel estimation technique for the wireless channel and associated UE. The base station may transmit an indication of the RS density to the UE. Downlink data bursts and uplink data bursts may include RSs and data according to the indicated RS density. Further, the base station may transmit to the UE, an indication to communicate using the selected wireless channel estimation technique.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: July 7, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Jing Sun, Taesang Yoo, Tao Luo
  • Patent number: 10693686
    Abstract: An apparatus includes an interface and a training circuit. The interface may be configured to transmit signals to/from a plurality of I/O channels. The training circuit may be configured to generate a training voltage on a current one of the I/O channels, read an output of an eye monitor slicer to determine voltage transition values corresponding to the training voltage at a plurality of sampling times, map the voltage transition values to coefficients for the current I/O channel and determine the coefficients for each of the I/O channels. The training circuit may comprise the eye monitor slicer. The voltage transition values may correspond to an interference response for one of the I/O channels. The coefficients may be applied as feedback to cancel the interference.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: June 23, 2020
    Inventors: Xudong Shi, Paul Scott
  • Patent number: 10693512
    Abstract: The present disclosure provides for distortion cancelled by receiving a collided signal comprising first and second signals carrying respective first and second packets; digitizing the collided signal into a first digital signal and decoding the first packet therefrom; calculating a digital linear interference component of the first packet on the second from an estimated signal re-encoding the decoded first packet; synthesizing an analog linear interference component from the digital linear interference component; determining a digital nonlinear interference component of the first packet on the second from the first digital signal; amplifying the collided signal to produce a second amplified signal; removing the analog linear interference component from the second amplified signal to produce a partially de-interfered signal; removing the digital nonlinear interference component from the partially de-interfered signal to produce a de-interfered signal; and decoding the second packet from the de-interfered sign
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: June 23, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Khashayar Mirfakhraei, Ardalan Alizadeh, Xu Zhang, Gautam D. Bhanage, Daniel J. Lyons, Brian D. Hart
  • Patent number: 10691836
    Abstract: Methods and systems are provided for a charge withholding converter reshuffling technique that decorrelates input power of a multi-phase switched capacitor (SC) voltage converter relative to the output power provided to a load. The load may be a cryptographic device. The technique provides a countermeasure against power analysis attacks. A controller including a first random number generator coupled to the stages of the SC voltage converter controls gating for charging a first subset of the stages. A controller including a second random number generator coupled the stages of the SC voltage converter controls gating for discharging a second subset the stages. A number of the switched capacitor stages maintain their charge beyond the switch period in which they are charged. The SC voltage converter withholds a random portion of input charge and delivers this charge to the load after a random time period.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: June 23, 2020
    Assignee: University of South Florida
    Inventors: Selcuk Kose, Weize Yu
  • Patent number: 10687284
    Abstract: A system that incorporates aspects of the subject disclosure may perform operations including, for example, obtaining performance measurements, identifying a performance measurement from the performance measurements that is below performance threshold and, in turn, initiating corrective action to improve the performance measurement of an affected network element falling below the performance threshold. The performance measurements can be determined from measurements associated with signals generated by communication devices, noise levels in a spectral portion used by communication devices to transmit the signals, and interference signals exceeding an adaptive inter-cell interference threshold. Other embodiments are disclosed.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: June 16, 2020
    Assignee: ISCO International, LLC
    Inventors: Amr Abdelmonem, Jorge Seoane, Mikhail Galeev, Krishna Komoravolu, Gordon Reichard, Jr.
  • Patent number: 10673659
    Abstract: An iterative two dimension equalizer usable in a receiver of orthogonal time frequency space (OTFS) modulated signals is described. In one configuration of the equalizer, a forward path generates, from received time-frequency domain samples and a channel estimate, estimates of data bits and likelihood numbers associated with the estimates of data bits, generated by delay-Doppler domain processing. In the feedback direction, the estimates of data bits are used to generate symbol estimates and autocorrelation matrix estimate in the time domain. In another configuration, a soft symbol mapper is used in the feedback direction for directly generating the feedback input symbol estimate without having to generate estimates of data bits.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: June 2, 2020
    Assignee: Cohere Technologies, Inc.
    Inventors: Ronny Hadani, Shachar Kons
  • Patent number: 10666486
    Abstract: In accordance with an embodiment of the present invention, a method for receiving a signal, comprising the estimation step for estimating time and frequency shifts that are embedded in the received signal, to cancel-out shifts, wherein the method refers to the non-commutative shift parameter space of co-dimension 2.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: May 26, 2020
    Assignee: radius co., ltd.
    Inventor: Tohru Kohda
  • Patent number: 10652882
    Abstract: A data transmission method, a wireless network device, and a communications system are provided. The method includes: sending, by a first wireless network device, at least two channels for common information on a same carrier, where the at least two channels for common information include a first channel for common information and a second channel for common information, the first channel for common information and the second channel for common information are on different subbands of the same carrier, and the common information includes at least one of a synchronization signal, a broadcast signal, or a system message.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: May 12, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yuanjie Li, Ting Wang, Lixia Xue
  • Patent number: 10628297
    Abstract: Embodiments of a device and method to automatically acquire signal quality metrics in a digital communication system are disclosed. The device may include acquisition means to sample the likelihood of a digital communication signal passing through a grid of time and amplitude regions, and storage means by which such likelihood measurements may be accumulated in a computer memory array for analysis. A state machine may execute a method that controls both the acquisition means and the storage means, requiring minimal intervention from supervisory systems.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: April 21, 2020
    Assignee: Finisar Corporation
    Inventors: Henry Meyer Daghighian, Lucy G. Hosking, Gilles P. Denoyer
  • Patent number: 10629998
    Abstract: The present disclosure provides a radar apparatus and a method of correcting an error of the radar apparatus. According to the present disclosure a first transmitting antenna group and a first receiving antenna group are constituted by elongating some of a plurality of transmitting antennas and a plurality of receiving antennas in a first direction of vertical directions, a second transmitting antenna group and a second receiving antenna group are constituted by elongating the other antennas in a second direction opposite to the first direction, and one or more of transmitting antennas that transmit transmission signals and one or more of receiving antennas that receive reflection signals are included in different groups, thereby being able to measure elevation information of an object and correct a mounting position of the radar apparatus on the basis of the information.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: April 21, 2020
    Assignee: MANDO CORPORTION
    Inventors: Hae Sueng Lim, Jae Eun Lee, Seong Hee Jeong
  • Patent number: 10623030
    Abstract: 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: Grant
    Filed: December 26, 2018
    Date of Patent: April 14, 2020
    Assignee: Ubiquiti Inc.
    Inventors: Lance D. Lascari, Robert J. Pera
  • Patent number: 10617941
    Abstract: A computer game interface is disclosed, having controller inputs configured to receive an input signal from a user interface controller and to enable the user to control a user controllable element of a game on a computer. The computer game interface also has a controller output that sends an output signal to the computer, the output signal having information to control the user controllable element of the game. Another element of the computer game interface is a switching module in communication with the controller inputs and the controller output. The switching module selects an input signal from the input signals received by the controller inputs and communicates the input signal to the controller output. An additional element of the computer game interface is a timer controlling the switching module to switch the input signal communicated to the controller output based on a time period.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: April 14, 2020
    Inventor: Douglas Howard Dobyns
  • Patent number: 10613680
    Abstract: An electronic device is described which has a sensor panel comprising a plurality of receive electrodes configured to measure signals received from one or more transmit electrodes; and a sensor panel control module. The module is configured to receive signals from the plurality of receive electrodes; and for an individual one of the received signals, compute a difference between the received signal and an expected signal which is expected to be received in the absence of impulse noise. The module clips or blanks the received signals according to a threshold applied to the computed difference.
    Type: Grant
    Filed: March 4, 2017
    Date of Patent: April 7, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Benjamin Imanilov
  • Patent number: 10594262
    Abstract: A novel and useful apparatus and method for an image-interferer aware single quadrature RF downconversion (SQRD) low intermediate frequency (LIF) receiver and related power reduction techniques utilized therein. The invention applies zero-margin adaptive transceiver (ZMAT) design principles to considerably reduce the receiver's power consumption in an adaptive fashion in accordance with the instantaneous reception conditions. In a low IF dual-branch (i.e. quadrature) downconversion receiver, the radio monitors the image strength and shuts off the receiver's Q branch (or I branch) when image rejection is not needed (i.e. when the relative image strength is below a threshold), thus significantly reducing power consumption in the RF receiver. A zero IF receiver is switched to a SQRD low IF receiver of lower power consumption when the image interferer strength is low enough to allow for a given required level of performance.
    Type: Grant
    Filed: July 16, 2017
    Date of Patent: March 17, 2020
    Assignee: Short Circuit Technologies LLC
    Inventors: Sankalp Modi, Oren E. Eliezer
  • Patent number: 10594527
    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: August 7, 2015
    Date of Patent: March 17, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Fumihiro Hasegawa, Akinori Taira
  • Patent number: 10582461
    Abstract: Synchronization of plural outputs of data transported by a wireless network is facilitated by bandlimiting a sample clock signal controlling a rate at which data is processed by the network's devices and/or bandlimiting wall time data controlling the real time for presenting a datum.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: March 3, 2020
    Assignee: Summit Wireless Technologies, Inc.
    Inventor: Kenneth A. Boehlke
  • Patent number: 10560913
    Abstract: Disclosed are a method, a device, and a system for the acquisition of control node information. In embodiments of the present invention, on the basis of information transmitted by a base station, a relay node acquires control node information on user terminal access attached in the information acquired, thereby allowing a relay node in a system placed after the introducing relay node to be informed of the control node information on user terminal access.
    Type: Grant
    Filed: December 1, 2012
    Date of Patent: February 11, 2020
    Assignee: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY
    Inventors: Beibei Jia, Dajun Zhang, Yi Yang, Wei Bao
  • Patent number: 10547487
    Abstract: The present disclosure includes systems and techniques relating to an integer non-uniform constellation (NUC) high-order M-QAM. In some implementations, M is no less than 1024. Each of M constellation points of the integer NUC M-QAM has respective integer real and imaginary coordinates. A bit pattern is received and mapped to integer real and imaginary coordinates of one of the M constellation points according to a mapping rule of the integer NUC M-QAM. A transmission signal is modulated in accordance with the integer real and imaginary coordinates of the one of the M constellation points of the integer NUC M-QAM.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: January 28, 2020
    Assignee: Marvell International Ltd.
    Inventors: Yan Zhang, Hongyuan Zhang, Sudhir Srinivasa
  • Patent number: 10541838
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A method and an apparatus for channel estimation in a wireless communication system are provided. According to various embodiments of the present disclosure, an method of a receiving apparatus in a wireless communication system includes: estimating channel tap values by using a first reference signal; and estimating an effective channel regarding a second reference signal, based on channel tap indexes corresponding to values greater than or equal to a threshold from among the channel tap values. According to various embodiments of the present disclosure, the receiving apparatus can more exactly estimate an effective channel, and can achieve a lower BLER even in a high SNR region.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: January 21, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dongjae Lee
  • Patent number: 10536939
    Abstract: A method and an apparatus of cooperating with a plurality of base stations in a wireless communication system. A cloud cell is configured with a plurality of base stations that cooperate with each other for a mobile station and synchronizes user contexts for serving the mobile station among the plurality of base stations included in the cloud cell, and the plurality of base stations cooperate with each other to provide a communication service to the mobile station. The present disclosure reduces generation of a handover when the mobile station moves between base stations, and increases the data yield of the mobile station by transmitting and receiving data in cooperation with base stations in a cloud cell at a shaded area or a cell border.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: January 14, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Bin Chang, Rakesh Taori, Hyun-Jeong Kang, Jung-Shin Park, Yeong-Moon Son
  • Patent number: 10533911
    Abstract: The present invention discloses a signal processing device, an air pressure sensor assembly and an electronics apparatus. The signal processing device for a sensing signal comprises: an input unit, which is configured to receive the sensing signal; and a processing unit, which is configured to attenuate a higher frequency component of the sensing signal so that the value of the higher frequency component when the sensing signal is stable is lower than that when the sensing signal is changing. According to an embodiment of this invention, the present invention can reduce the noise in a sensing signal from an air pressure sensor during a stable state.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: January 14, 2020
    Assignee: GOERTEK.INC
    Inventors: Li-Te Wu, Ching-Tzung Lin, Ssu-Ying Chen
  • Patent number: 10531518
    Abstract: Systems and methods for improving wireless access point communications are provided. Some embodiments contemplate filtering operations such that two or more radios can be used in the 5 GHz or 2.4 GHz band without interfering with each other. Some embodiments employ discrete Low Noise Amplifiers (LNA) and Power Amplifiers (PA) as well as frontend modules. In some examples, filtering may be primarily used on the receiving side to filter out other signals in 5 GHz before they are amplified by an external LNA or LNAs, e.g., as integrated in a WLAN chipset. Filtering may also be performed on the transmit side in some embodiments.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: January 7, 2020
    Assignee: NETGEAR, INC.
    Inventors: Peiman Amini, Joseph Amalan Arul Emmanuel, Shun-Liang Yu
  • Patent number: 10530436
    Abstract: A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: January 7, 2020
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10512087
    Abstract: 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: Grant
    Filed: July 16, 2018
    Date of Patent: December 17, 2019
    Assignee: NETGEAR, Inc.
    Inventor: Michael Clegg
  • Patent number: 10498412
    Abstract: A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: December 3, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10491360
    Abstract: The present invention discloses a wireless communication device including: a transmission circuit generating a digital modulation signal according to transmission data, and analogizing the digital modulation signal to generate and transmit a transmission signal in a first mode; a reception circuit receiving a reception signal including an interference component caused by the transmission circuit; a self-interference cancellation circuit being enabled in the first mode and disabled in a second mode, providing an analog self-interference cancellation signal for the wireless reception circuit according to the transmission signal to cancel a part of the interference component, and providing a digital self-interference cancellation signal for the reception circuit according to the digital modulation signal to cancel another part of the interference component; and a control circuit having the wireless communication device operate in one of the first mode and the second mode according to at least one of indices and
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: November 26, 2019
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Der-Zheng Liu, Ming-Yuh Yeh
  • Patent number: 10474861
    Abstract: An electronic device includes: a wireless communication module configured to perform wireless communication in a first state; a fingerprint sensor configured to sense a fingerprint in a second state; and at least one processor electrically connected to the wireless communication module and the fingerprint sensor, wherein the processor changes the first state or the second state based on at least part of an operating state of the wireless communication module or the fingerprint sensor.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: November 12, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Do Hee Kang, Jung Sik Park
  • Patent number: 10477446
    Abstract: An interference cancellation method and device are disclosed. In a process of performing cell reestablishment or cell handover, for any interference cancellation parameter previously received from a network-side device, a user terminal can continue to apply the interference cancellation parameter to perform an interference cancellation operation according to a specified first interference cancellation parameter application rule or first instruction information delivered by the network-side device, or release or no longer apply the interference cancellation parameter. In this way, a currently existing problem that a user terminal cannot know how to process a previously received interference cancellation parameter in a process of performing cell reestablishment or cell handover can be resolved, and further, an objective of improving an interference cancellation effect can be achieved.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: November 12, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Wei Quan, Xiaodong Yang, Jian Zhang, BingZhao Li, Zhenxing Hu
  • Patent number: 10469292
    Abstract: A test generator that determines an amplification level of an amplifier within a DFE and a method for determining the amplification level are disclosed. The test generator includes a signal generator that generates a test pattern signal characterized by a repeating digital test pattern and an offset voltage and an input signal port adapted to receive a digital DFE output signal from the DFE, the digital DFE output signal depending on the amplification level. The test generator includes an output control port that communicates a digital command word specifying a gain to be used by the amplifier in the DFE and a threshold for determining if a signal in the DFE is a logical one or logical zero. A controller determines the amplification level by measuring a BER between the test pattern and the digital DFE output signal as a function of the threshold and the offset voltage.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: November 5, 2019
    Assignee: Keysight Technologies, Inc.
    Inventor: Axel Wankmueller
  • Patent number: 10461972
    Abstract: An optical receiver apparatus includes a photo detector that detects amplitude modified optical signals transmitted through an optical transmission channel and mapped to constellation points and converts the optical signal into electrical signals, a sampling circuit that samples the electrical signals and generates digital signals, and a signal processing circuit that has a two-step equalization algorithm converging actual constellation points into desired constellation points. The two-step equalization algorithm includes a first equalization algorithm that uses multiple modulus in performing an error signal calculation, and a second equalization algorithm that includes a filtering procedure that compares actual constellation points with desired constellation points and an adjustment procedure that iteratively adjusts parameters of the filtering procedure in accordance with the comparison result.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: October 29, 2019
    Assignee: ZTE Corporation
    Inventors: Jianjun Yu, Hung-Chang Chien
  • Patent number: 10461966
    Abstract: An apparatus and a method are provided in which a processor of a receiving apparatus regenerates time domain samples of an interfering data numerology from frequency domain received signals. The processor performs pre-fast Fourier transform (FFT) processing of a desired data numerology on the regenerated time domain samples of the interfering data numerology. The processor performs FFT, with a size corresponding to the desired data numerology, on the regenerated time domain samples after performing pre-FFT processing to generate an interfering numerology cancelation signal. The processor subtracts the interfering numerology cancelation signal from a frequency domain received signal of the desired data numerology to reduce an effect of interference of the interfering data numerology on the desired data numerology.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: October 29, 2019
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hamed Maleki, Pranav Dayal, Kee-Bong Song
  • Patent number: 10454510
    Abstract: An optimization system for use in a digital repeater system comprises at least one input port for receiving a carrier signal associated with a communication channel of a telecommunication network, at least one meter unit for obtaining an estimate of the error vector magnitude for the carrier signal, and at least one crest factor reduction unit for dynamically reducing, based on the estimate of the error vector magnitude, the crest factor of the carrier signal.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: October 22, 2019
    Assignee: Andrew Wireless Systems GmbH
    Inventors: Keld Knut Lange, Thomas Kummetz
  • Patent number: 10432243
    Abstract: Systems and methods are provided for receiver nonlinearity estimation and cancellation. Narrowband (NB) estimation may be performed in a receiver during handling of received radio frequency (RF) signals. The narrowband (NB) may include generating estimation channelization information relating to received RF signals; generating reference nonlinearity information relating to one or more other signals, which may cause or contribute to nonlinearity that affects the processing of the received RF signals; and generating, based on the estimation channelization information relating to the received RF signals and the reference nonlinearity information relating to the other signals, control data for configuring nonlinearity cancellation functions. The received RF signals may be channelized, and the estimation channelization information may be generated based on the channelization of the received RF signals.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: October 1, 2019
    Assignee: MAXLINEAR, INC.
    Inventors: Wen-Chi Tu, Stephane Laurent-Michel