Patents Examined by Rahel Guarino
  • Patent number: 10924241
    Abstract: A plurality of multicarrier signals is generated. Each of the plurality of multicarrier signals includes a pilot symbol sequence at a same temporal point in each multicarrier signal. Each pilot symbol sequence includes a plurality of pilot symbols with non-zero amplitude. The pilot symbol sequences are orthogonal to each other at the same temporal point. A quantity of the plurality of pilot symbols in each pilot symbol sequence is greater than or equal to a quantity of the plurality of multicarrier signals to be transmitted. The plurality of multicarrier signals are transmitted in an identical frequency band from a plurality of antennas. The plurality of antennas includes two, three, or four antennas.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: February 16, 2021
    Assignee: Wi-Fi One, LLC
    Inventors: Yutaka Murakami, Masayuki Orihashi, Akihiko Matsuoka
  • Patent number: 10917159
    Abstract: Presented herein are systems and methods for beam information feedback. A first communication node may receive, from a second communication node, a group of reference signals that are carried either on respective beams or on a same beam. The group of reference signals may be determined based on one or more time-frequency-code resources. The first communication node may determine, based on the group of reference signals, one or more beam indexes and channel state information. The first communication node may transmit, to the second communication node, a set including the one or more beam indexes and the channel state information.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: February 9, 2021
    Assignee: ZTE CORPORATION
    Inventors: Bo Gao, Yu Ngok Li, Zhaohua Lu, Yifei Yuan, Xinhui Wang
  • Patent number: 10911125
    Abstract: One example method includes receiving, by a terminal, indication information sent by a base station, where the indication information indicates a precoding matrix in a first precoding matrix set and a transmission rank corresponding to the precoding matrix, and the precoding matrix is used to precode transmit data streams at r transmission layers to obtain signals to be sent on N transmission ports of the terminal; and when r>1, a nonscalar part of a precoding matrix whose transmission rank is r in the first precoding matrix set is obtained by combining columns in nonscalar parts of r precoding matrices, and the r precoding matrices are precoding matrices selected from all precoding matrices whose transmission ranks are 1; and determining, by the terminal based on the indication information, the precoding matrix for precoding the transmit data streams.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: February 2, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yanliang Sun, Kai Xu
  • Patent number: 10904060
    Abstract: A peak suppression circuit includes a memory, and a processor coupled to the memory and the processor configured to suppress a first peak of a transmission signal according to a first sampling signal having a predetermined period, delay the transmission signal where the first peak is suppressed by a predetermined time corresponding to a period shorter than the predetermined period, and suppress a second peak of the delayed transmission signal according to a second sampling signal having the predetermined period.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: January 26, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Hiroyoshi Ishikawa, Shinichiro Kobayashi
  • Patent number: 10892788
    Abstract: A method and a transmitter arrangement for cancelling cross talk and correcting power amplifier (PA) distortion for a transmitter branch of a multiple-input multiple-output (MIMO) configuration having multiple branches. The method comprises combining an original baseband input signal of a first MIMO transmitter branch with a crosstalk output signal generated from two or more signals associated with two or more respective MIMO branches, the two or more signals used as input to, and processed by, a crosstalk model. The method further comprises processing the combined signal to generate an output signal in order to minimize the error of the original baseband input signal caused by the crosstalk and/or PA distortion.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: January 12, 2021
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Haiying Cao, Spendim Dalipi, Per Landin
  • Patent number: 10886955
    Abstract: A power amplifier module can include one or more switches, a coupler module, input signal pins, and a controller having first and second output terminals. The input signal pins can receive a voltage input/output signal, a clock input signal, and a data input signal. The controller can (i) set a mode of the one or more switches using a synchronous communication protocol in which the controller outputs a synchronous clock signal on the first output terminal and a data signal on the second output terminal, when the power amplifier module is in a first operating mode, or (ii) set a mode of the coupler module using an asynchronous communication protocol in which the controller outputs a first asynchronous control signal on the first output terminal and a second asynchronous control signal on the second output terminal, when the power amplifier module is in a second operating mode.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: January 5, 2021
    Assignee: Skyworks Solutions, Inc.
    Inventors: Matthew Lee Banowetz, Philip H. Thompson, Edward James Anthony, James Henry Ross
  • Patent number: 10886984
    Abstract: A system, method, and computer readable medium provide for determining a current size of an antenna array at a full-dimension multiple input multiple output (FD-MIMO) antenna site comprising multiple antenna base blocks, each antenna base block including multiple antennas, and the current size of the antenna array corresponding to a number of the antennas that are in active use; obtain a report of a current traffic demand for a geographic coverage area, the current traffic demand being based on a capacity and a service reliability associated with mobile devices in the geographic coverage area; determine a number of the antennas to place in active use based on the current traffic demand and the current size of the antenna array; and send a control signal to place the number of antennas in active use.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: January 5, 2021
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Jin Yang, Emad M. Abuqabaita, Michael Kondratiuk
  • Patent number: 10887814
    Abstract: A method of sending a beam report and a terminal thereof are provided. The method includes: monitoring a quality parameter of at least one beam link; and determining, according to the quality parameter of the beam link, at least one beam link subjected to a quality loss; in the case that at least a first preset quantity of beam link of the at least one beam link subjected to the quality loss is the beam link of a target antenna panel, determining that a shielding event of the target antenna panel is detected and sending a beam report to a network.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: January 5, 2021
    Assignee: VIVO MOBILE COMMUNICATION CO., LTD.
    Inventors: Yu Yang, Peng Sun
  • Patent number: 10879959
    Abstract: Power line communication (PLC) has significant benefits and advantages in comparison to wireless communication. By exploiting the power line infrastructure, PLC signals can cover a larger area and provide high speed data service without installation of new infrastructure, especially in remote rural areas where Ethernet is not available. A MIMO-based (multiple-input-multiple-output-based) power line communication structure (MU-MIMO-PLC) is described herein and exploits power line infrastructure to achieve MIMO communication and/or high data service. MU-MIMO-PLC exploits the spatiality of power line infrastructure and the multipath property of power line channel. MU-MIMO-PLC leverages these properties to achieve high data rates with MIMO technology.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: December 29, 2020
    Assignee: OHIO STATE INNOVATION FOUNDATION
    Inventors: Kannan Srinivasan Athreya, Wei Sun, Bo Chen, Vivek Sriram Yenamandra Guruvenkata
  • Patent number: 10879970
    Abstract: A method and system for selecting precoding matrix index are herein disclosed. The method includes determining a precoder and candidate beams, selecting base beams based on a correlation power between the determined precoder and determined candidate beams, and estimating amplitude coefficients and cophase coefficients by projecting a channel on the selected base beams.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: December 29, 2020
    Inventors: Qi Zhan, Hongbing Cheng, Kee-Bong Song
  • Patent number: 10879986
    Abstract: According to an aspect, a wireless node selects a set of reference signal antenna ports for use in transmitting data to other wireless nodes in a given transmit time interval, from a plurality of sets of reference signal antenna ports that are available for use and that include reference signal antenna ports having different reference signal densities in the frequency and/or time dimension. The wireless node sends a message to a second wireless node indicating a reference signal assignment and including an indication of the selected set of reference signal antenna ports.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: December 29, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Lars Lindbom, Mattias Frenne, Martin Hessler, Karl Werner
  • Patent number: 10868594
    Abstract: Design of precoding and feedback for user equipment (UE)—specific reference signals (UE-RS)—based open-loop and semi-open-loop multiple input, multiple output (MIMO) systems is discussed. Aspects of the present disclosure provide for sub-resource block (RB) random precoding that allows for greater diversity gain in a lower bandwidth. In addition, the precoding may be performed using resource element (RE)—level layer shifting that provides for a number of precoders to be assigned to a number of layers for every such continuous subcarrier. As such, two codewords may experience the same effective channel quality with channel quality indicators (CQI) being averaged across all of the layers.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: December 15, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Chao Wei, Wanshi Chen, Peter Gaal, Hao Xu, Neng Wang, Xiaohui Liu, Jilei Hou
  • Patent number: 10862645
    Abstract: Methods, systems, and storage media for providing multi-cell, multi-point single user (SU) multiple input and multiple output (MIMO) operations are described. In embodiments, an apparatus may receive and process a first set of one or more independent data streams received in a downlink channel from a first transmission point. The apparatus may receive and process a second set of one or more independent data streams received in a downlink channel from a second transmission point. The apparatus may process control information received from the first transmission point or the second transmission point. The control information may include an indication of a quasi co-location assumption to be used for estimating channel characteristics for reception of the first set of one or more independent data streams or the second set of one or more independent data streams. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: December 8, 2020
    Assignee: Apple Inc.
    Inventors: Alexei Davydov, Gregory Morozov, Vadim Sergeyev, Alexander Maltsev, Ilya Bolotin
  • Patent number: 10862718
    Abstract: A contactless payment device and method transmits a sequence of magnetic-field pulses directly to two or three magnetic-stripe read heads of a point-of-sale terminal. The baud rate at which the data is transmitted is modulated so that track data for one read head channel will be ignored by another read head channel, based on the change to the baud rate and/or the rate of change in the baud rate to improve acceptance of the transmitted pulses received by the read heads of the point-of-sale terminal.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: December 8, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Enyang Huang
  • Patent number: 10862717
    Abstract: An apparatus configured to acquire S-parameters of a communications channel includes a physical interface configured to transmit and receive signals through a communications channel under test, a processor, configured to execute instructions that, when executed cause the processor to: send a first data pattern from the transmitter through the communications channel at a first data rate; acquire a first waveform corresponding to the first data pattern and determine a first pulse response; calculate a first transfer function from the first pulse response; send a second data pattern from the transmitter through the communications channel at a second data rate; acquire a second waveform corresponding to the second data pattern and determine a second pulse response; calculate a second transfer function from the second pulse response; and combine the first and second transfer functions to determine an S-parameter of the communications channel.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: December 8, 2020
    Assignee: Tektronix, Inc.
    Inventor: Kan Tan
  • Patent number: 10862729
    Abstract: The embodiments described herein provide systems and methods for digital correction in low intermediate frequency (IF) receivers. Specifically, the embodiments described herein use digital correction techniques that can correct for signal distortions in low IF receivers caused by I-Q imbalance, including both I-Q magnitude imbalance and I-Q phase imbalance. In general, the embodiments described herein are implemented to at least partially cancel an image of a blocking signal in the complex digital signal. Such a cancellation can be implemented to at least partially cancel an image of blocking signal where that image occurs at or near the intermediate frequency. In one embodiment, a corrector is implemented in a low RF receiver and is configured to receive a complex digital signal that includes an image of a blocking signal. Such a low RF receiver can further include a corrector controller to selectively enable the corrector.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: December 8, 2020
    Assignee: NXP USA, Inc.
    Inventor: Claudio Gustavo Rey
  • Patent number: 10862728
    Abstract: The embodiments described herein provide systems and methods for digital correction in low intermediate frequency (IF) receivers. Specifically, the embodiments described herein use digital correction techniques that can correct for signal distortions in low IF receivers caused by I-Q imbalance, including both I-Q magnitude imbalance and I-Q phase imbalance. In general, the embodiments described herein are implemented to at least partially cancel an image of a blocking signal in the complex digital signal. Such a cancellation can be implemented to at least partially cancel an image of blocking signal where that image occurs at or near the intermediate frequency. In one embodiment, a corrector is implemented in a low RF receiver and is configured to receive a complex digital signal that includes an image of a blocking signal. Such a low RF receiver can further include a trainer configured to train the corrector to generate the cancellation signal.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: December 8, 2020
    Assignee: NXP USA, Inc.
    Inventor: Claudio Gustavo Rey
  • Patent number: 10846879
    Abstract: The present invention provides a methods, apparatus and systems for improving a systems-level data rate on a communications link such the orthogonal frequency division multiplexed multiple access (OFDMA) downlink used in used in WiFi and LTE cellular/wireless mobile data applications. The present invention preferably uses a form of multilevel coding and decoding known as tiled-building-block encoding/decoding. With the present invention, different receivers coupled to different parallel downlink channels with different channel qualities decode different received signal constellations at different levels of resolution. This allows the downlink of the OFDMA system to operate with a significantly higher data rate, thus eliminating existing inefficiencies in the downlink and significantly increasing system level bandwidth efficiency.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: November 24, 2020
    Inventors: Muhammad Ahsan Naim, John P. Fonseka
  • Patent number: 10848298
    Abstract: Embodiments are disclosed for full-rate phase detection for a pulse amplitude modulation N (PAM-N) signal. The example method includes sampling an incoming signal in one or more sampling times. The example method further includes determining that an amplitude associated with a current sampling time is within an upper threshold and a lower threshold for each sampling time of the one or more sampling times. The example method further includes upon determining that the amplitude of the current sampling time is within the upper threshold and the lower threshold, determining an amplitude range associated with an immediately preceding sampling time and an amplitude range associated with an immediately subsequent sampling time. The example method further includes determining a transition status representing one of an upward transition, a downward transition, or no transition with respect to the current sampling time.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: November 24, 2020
    Assignee: Mellanox Technologies Denmark ApS.
    Inventors: Johan Jacob Mohr, Thorkild Franck, Eyal David
  • Patent number: 10848116
    Abstract: A bi-directional active combiner and splitter using bi-directional variable gain amplifiers (BD_VGAs) is proposed. Advantages of the proposed bi-directional active combiner and splitter includes the following 1) compact size—for each BD_VGA, cascode transistor pair is small and the same matching network is used by the cascode transistor pair for both directions; 2) high efficiency—no switching loss in signal path, only switched matching; 3) reduced passive trace loss and power consumption—simplified signal interconnection; 4) active current combining—eliminates large size in the passive combiner; 5) high input-output isolation—cascode and neutralization; 6) precise gain control and unequal combining or splitting—changing the gain of the BD_VGA; and 7) phase-invariant amplifier design.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: November 24, 2020
    Assignee: Tubis Technology INC.
    Inventors: Kenny Kun-Long Wu, James June-Ming Wang