Patents Examined by Khai Tran
  • Patent number: 10693568
    Abstract: A method for receiving data using an FPGA receiver circuit comprises receiving payload data from a DUT using a first rate of a plurality of line rates during a first burst, wherein the DUT is communicatively coupled to the FPGA receiver circuit. The method further comprises transitioning to a power saving state at an end of the first burst and receiving synchronization data from the DUT using a second rate of a plurality of line rates during a second burst. Further, the method comprises establishing synchronization with a clock data recovery (CDR) circuit of the FPGA receiver circuit at the second rate and receiving payload data from the DUT at the second rate.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: June 23, 2020
    Assignee: ADVANTEST CORPORATION
    Inventors: Sivanarayana Pandian Rajadurai, Alan Starr Krech, Jr., Preet Paul Singh, Darrin Paul Albers
  • Patent number: 10687186
    Abstract: A processor-implemented method by a message recipient in a vehicle or on a mobile device for decoding overlapping wireless messages is provided. The method comprises: receiving a first message from a first message sender that overlaps with a second message received from a second message sender; estimating, in a first signal recovery phase, a received data symbol (d0) from the first message and a channel impulse response (h1) corresponding to a data channel between the message recipient and the second message sender; estimating, in a second signal recovery phase, a received data symbol (d0)? from the first message and a received data symbol (d1) from the second message; and reconstructing the first message from the estimated data symbol (d0) estimated in the first signal recovery phase and estimated data symbol (d0)? estimated during the second signal recovery phase and reconstructing the second message from the estimated data symbol (d1) estimated during the second signal recovery phase.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: June 16, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Xi Ju, Timothy J. Talty, Dan Shan, Fan Bai
  • Patent number: 10680685
    Abstract: Radio network node and method therein, for communication in a wireless communication system. The radio network node comprises: a plurality of antenna elements, a plurality of transceivers, wherein the plurality of transceivers comprise a first subset of the plurality of transceivers coupled to a first subset of the plurality of antenna elements and a second subset of the plurality of transceivers coupled to a second subset of the plurality of antenna elements; and a controller configured to adjust the first subset of the transceivers to work at a first frequency band, and to adjust the second subset of the transceivers to work at a second frequency band.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: June 9, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Mats Högberg, Björn Sihlbom, Ulrik Imberg, Tomas Wilhelmsson, Teijo Henrikki Lehtinen, Yajun Jiang
  • Patent number: 10680684
    Abstract: A method and system analog beamforming for a single-connected antenna array is herein disclosed. A method includes estimating analog channels on a per-antenna basis, calculating explicitly an analog beamforming matrix based on the estimated analog channels, and performing analog beamforming based on the calculated analog beamforming matrix.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: June 9, 2020
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hongbing Cheng, Hyukjoon Kwon, Qi Zhan, Kee-Bong Song
  • Patent number: 10680723
    Abstract: A measuring device comprising a channel simulator is provided. The channel simulator is adapted to simulate multipath propagation by modifying a first measuring signal, using a plurality of taps defined by tap parameters, resulting in a second measuring signal. The measuring device moreover comprises a parameter modifier, adapted to modify input tap parameters, resulting in the tap parameters.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: June 9, 2020
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventor: Stefan Schmidt
  • Patent number: 10673582
    Abstract: A method and system provides for execution of calibration cycles from time to time during normal operation of the communication channel. A calibration cycle includes de-coupling the normal data source from the transmitter and supplying a calibration pattern in its place. The calibration pattern is received from the communication link using the receiver on the second component. A calibrated value of a parameter of the communication channel is determined in response to the received calibration pattern. The steps involved in calibration cycles can be reordered to account for utilization patterns of the communication channel. For bidirectional links, calibration cycles are executed which include the step of storing received calibration patterns on the second component, and retransmitting such calibration patterns back to the first component for use in adjusting parameters of the channel at first component.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: June 2, 2020
    Assignee: Rambus Inc.
    Inventors: Frederick A. Ware, Richard E. Perego, Craig E. Hampel
  • Patent number: 10666477
    Abstract: An apparatus and method for broadcast signal frame using layered division multiplexing are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling, type information of Physical Layer Pipes (PLPs) and time interleaver information shared by the core layer signal and the enhanced layer signal.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: May 26, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae-Young Lee, Sung-Ik Park, Sun-Hyoung Kwon, Heung-Mook Kim
  • Patent number: 10666274
    Abstract: According to one embodiment, a dual voltage controlled oscillator (VCO) circuit includes a first VCO and a second VCO. The first VCO includes: a first variable capacitor having an input node, a first output node, and a second output node, a second variable capacitor coupled in parallel with the first variable capacitor, a first transistor, and a second transistor, where the first transistor has a first drain coupled to the first output node, a first gate coupled to the second output node, and a first source coupled to a ground, where the second transistor has a second drain coupled to the second output node and a second gate coupled to the first output node, and a second source coupled to the ground. The dual VCO circuit includes a second VCO mirroring the first VCO, a first and a second inductors coupled to the first and the second VCO respectively.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: May 26, 2020
    Assignees: SPEEDLINK TECHNOLOGY INC., GEORGIA TECH RESEARCH CORPORATION
    Inventors: Doohwan Jung, Thomas Chen, Hua Wang
  • Patent number: 10664607
    Abstract: A system includes a transmit equalizer to equalize a data stream using a set of transmit parameters to generate an input signal. The system further includes a communication channel to receive the input signal. The system further includes a receive equalizer to receive an output signal from the communication channel in response to the input signal and detect the data stream from the output signal using a set of receive parameters. The system additionally includes a controller to change the set of transmit parameters in response to a condition, where the transmit parameters, the receive parameters, and the condition are selected to both enable the receive equalizer to detect the data stream from the output signal and reduce the likelihood of an external circuit detecting the data stream from the output signal.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: May 26, 2020
    Assignee: International Business Machines Corporation
    Inventors: Layne A. Berge, Benjamin A. Fox, Wesley D. Martin, George Zettles
  • Patent number: 10659124
    Abstract: A multiantenna communication device forms a directional beam by adding an antenna weight to respective signals of a plurality of antenna elements. The multiantenna communication device includes: a processor that executes performing distortion compensation on a transmission signal by using a distortion compensation coefficient; a plurality of power amplifiers that are provided corresponding to the antenna elements, and that amplify the transmission signal subjected to the distortion compensation by the processor; a multiplexer that multiplexes signals output from the power amplifiers to feed back; and an analog/digital (A/D) converter that A/D converts a multiplex feedback signal that is obtained by the multiplexer, wherein the processor executes updating the distortion compensation coefficient by using the multiplex feedback signal A/D converted by the A/D converter and the transmission signal.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: May 19, 2020
    Assignee: FUJITSU LIMITED
    Inventors: Takenori Ohshima, Yoji Ohashi, Hiroyoshi Ishikawa, Atsushi Honda, Toru Maniwa, Alexander Nikolaevich Lozhkin, Toshio Kawasaki, Yuichi Utsunomiya, Tomoya Ota
  • Patent number: 10651958
    Abstract: In one embodiment, an apparatus includes a bi-directional coupler for coupling an upstream signal and a downstream signal to a termination load. A test point detection mechanism is configured to detect when a test point device is inserted in a test point connector. The test point device is configured to perform a test of the upstream signal or the downstream signal. A switch is configured to switch from being coupled to the termination load to being coupled to the test point device when the test point device is detected as being inserted in the test point connector. The switch is configured to switch from being coupled to being coupled to the test point device to the termination load when the test point device is detected as being removed from being inserted in the test point connector.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: May 12, 2020
    Assignee: ARRIS Enterprises LLC
    Inventors: Zhijian Sun, Eric J. Cormier
  • Patent number: 10651919
    Abstract: The present application discloses a diversity receiver and a terminal. The diversity receiver includes a first main channel and a first diversity channel, the first main channel includes an antenna diplexer and a first main transmission channel, and the first diversity channel includes a tunable bandpass filter and a first diversity receiving channel. The first diversity receiving channel is coupled to a diversity antenna by using the tunable bandpass filter, and the tunable bandpass filter is configured to: adjust a passband bandwidth of the tunable bandpass filter according to a band bandwidth of a first transmit signal generated by the first main transmission channel and a band bandwidth of a first receive signal received from the diversity antenna, and perform bandpass filtering based on the passband bandwidth on the first receive signal.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: May 12, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Weinan Li, Xiaoran Li, Jian Liang
  • Patent number: 10644763
    Abstract: A full duplex system comprising a combiner with a first port connected to an antenna, a second port connectable to a source of a signal to be transmitted via the antenna, a third port for outputting a signal received via the antenna and a fourth port connected to a variable impedance. The variable impedance comprises a power splitter with an input connected to the fourth port and at least two outputs, wherein at least two outputs are connected to each other via variable phase shifting and attenuation circuitry.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: May 5, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Gavin Tomas Watkins
  • Patent number: 10637688
    Abstract: A wireless communication method and a wireless communication device. An electronic device for a first communication device in a wireless communication system includes: storage device configured to store an analog codebook for the first communication device, the analog codebook including a plurality of sets of first configuration parameters for a set of phase shifters of the first communication device; and a processing circuit configured to: perform channel estimation on a first channel from a second communication device to the first communication device respectively based on the plurality of sets of first configuration parameters and signal transmission from the second communication device, select a set of first configuration parameters corresponding to ones of channel estimation results that satisfy a first predetermined condition to generate a reduced analog sub-codebook, configure signal transmission from the first communication device to the second communication device based on the analog sub-codebook.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: April 28, 2020
    Assignee: SONY CORPORATION
    Inventors: Peiyao Zhao, Zhaocheng Wang, Jinhui Chen
  • Patent number: 10637698
    Abstract: A system and a method for demodulating a frequency shift keying signal are provided. The system includes a power transmitter and a power receiver. The power transmitter generates a frequency shift keying signal including a power signal and a power modulation instruction message. The power receiver detects a non-modulation period of the power signal within a waiting time, and then modulates a frequency of the power signal according to the power modulation instruction message to generate a pulse width modulated signal. The power receiver then calculates a full period of the pulse width modulated signal and then subtracts the non-modulation period from the full period of the pulse width modulated signal to obtain an undemodulated signal.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: April 28, 2020
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventor: Yuan-Hung Wang
  • Patent number: 10630513
    Abstract: Methods, systems, and devices for wireless communications are described in which different spreading sequences may be used to distinguish concurrent non-orthogonal multiple access (NOMA) transmissions. The spreading sequences may be selected based on one or more codebooks configured at a user equipment (UE) and a codebook for an uplink NOMA transmission determined based on a set of common resources allocated for the uplink NOMA transmission and a number of expected transmitters in a transmitter group. The UE may identify data to transmit in the uplink NOMA transmission, apply the spreading sequence to the data, and transmit the spread data in the uplink NOMA transmission. A base station may receive multiple concurrent uplink NOMA transmissions, perform receive signal processing to identify spreading signals and UE identity, de-spread the signals based on different spreading sequences, and demodulate and decode the de-spread signals of the NOMA UE.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: April 21, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Jing Lei, Seyong Park, Naga Bhushan
  • Patent number: 10630460
    Abstract: The invention comprises at least two antenna elements; at least two radio frequency units, which are connected to an antenna element; digital modem, comprising receiving and transmitting blocks, received signal distribution network, connected with radio frequency units and receiving block and is capable to forward the received signal from units to the receiving block; transmitted signal distribution network, connected with units and transmitting block and is capable to forward the transmitted signal from the transmitting block to the units; beamforming module, connected with receiving and transmitting blocks through the control channels; wherein said apparatus also comprises a clock generator and a clock signal distribution network connected with the clock generator and with radio frequency units, wherein each unit comprises variable gain blocks and a voltage-controlled oscillator with a phased locked loop synthesizer with a fractional and programmable divider, wherein the beamforming module is connected with
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: April 21, 2020
    Assignee: LIMITED LIABILITY COMPANY “RADIO GIGABIT”
    Inventors: Aleksey Andreevich Artemenko, Andrey Viktorovich Mozharovskiy, Sergey Alexandrovich Tikhonov, Alexandr Sergeevich Myskov, Roman Olegovich Maslennikov
  • Patent number: 10630364
    Abstract: Channel state information (CSI) operations are disclosed with regard to elevation beamforming (EB)/full dimension (FD) multiple input, multiple output (ED/FD-MIMO) operations. With CSI processing associated with multiple CSI-reference signal (CSI-RS) resources, ambiguities may arise in determining the CSI reporting type and rank. CSI reporting type may be determined using a last reported beam selection indicator (BI) or, in the absence of a BI, may be determined according to a predefined rule. When rank and BI are reported separately and rank is absent, user equipment may determine a default reference rank for CSI reporting based on either or both of previously reported rank or BI. When rank and BI are jointly reported, encoding schemes with fixed bitwidths determined based on either CSI-RS processes or resources may be used to enhance decoding. CSI-RS antenna ports, processes, or resources may also be used in determining application of CSI processing relaxation.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: April 21, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Chao Wei, Yu Zhang, Wanshi Chen, Peter Gaal
  • Patent number: 10630355
    Abstract: A method and a device for determining parameters of a precoder in a wireless communication system are disclosed. According to one aspect, a method includes selecting a subset of beams corresponding to a plurality of orthogonal beams; obtaining power levels of the selected subset of beams for generating a first factor of the precoder and obtaining phases of the selected subset of beams for generating a second factor, wherein the first factor and the second factor are part of the parameters of the precoder.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: April 21, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sebastian Faxér, Svante Bergman
  • Patent number: 10623051
    Abstract: The disclosure provides design of a frequency hopping sequence for an unlicensed IoT system operating in unlicensed spectrum. According to some embodiments, an apparatus for generating a frequency hopping sequence in an unlicensed Internet-of-Things (IoT) system includes baseband circuitry to generate a frequency hopping sequence by conducting a permutation operation based on a physical cell identifier (PCI) and a system frame number (SFN), and to select a channel within an unlicensed spectrum according to the frequency hopping sequence. In some embodiments, the input of the permutation operation is obtained from the SFN or from the SFN and the PCI. In some embodiments, the control of the permutation operation is a function of the PCI and/or the SFN. In some embodiments, the control of the permutation operation is generated using a pseudorandom number generator with the PCI as a seed.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: April 14, 2020
    Assignee: Apple Inc.
    Inventors: Salvatore Talarico, Huaning Niu, Wenting Chang