Patents Examined by Kevin M Burd
  • Patent number: 10378785
    Abstract: A communication system comprises a communication device and communication devices. The communication device comprises a direct current power supply and a transmitter configured to transmit data by control of a current flowing through a current loop. The communication devices comprise a receiver configured to receive data by detection of the current flowing through the current loop. The communication device comprises an adjuster configured to adjust the impedance between a signal line and a common line according to the number of communication devices.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: August 13, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroaki Kotake, Yoshiaki Koizumi, Takuya Mukai, Masahiro Ishihara
  • Patent number: 10382101
    Abstract: A method and apparatus may include receiving a transmission. The method can also include determining a sparsifying dictionary that sparsely approximates a data vector of the transmission. The determining the sparsifying dictionary includes performing a fast Fourier transform and/or an inverse fast Fourier transform. The method also includes configuring a filter based on the determined sparsifying dictionary.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: August 13, 2019
    Inventors: Abubakr O. Al-Abbasi, Ridha Hamila, Waheed U. Bajwa, Naofal Al-Dhahir
  • Patent number: 10374552
    Abstract: A mixer device is disclosed, which is fabricated as a bipolar-complementary metal oxide semiconductor (BiCMOS) integrated circuit device, to provide improved linearity and dynamic range, at higher operating frequencies. A mixer device configured according to an embodiment includes a driver circuit comprising bipolar junction transistors (BJTs) to convert a local oscillator signal to a high slew-rate gate drive signal. The driver circuit is configured as a quasi-complementary driver employing NPN BJTs. The mixer device further includes a mixer circuit comprising CMOS field-effect transistors (FETs) configured to mix an input signal with the gate drive signal to generate an output signal through the application of the gate drive signal to the gate port of the CMOS FETs. The mixer device further includes a voltage biasing circuit to provide a biased body voltage to the FETs to allow overdriving to a negative voltage relative to the body voltage.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: August 6, 2019
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Douglas S. Jansen
  • Patent number: 10367559
    Abstract: Embodiments herein relate to a method, performed by a network node, for reducing a higher layer signaling overhead in multi antenna wireless communication systems. The network node operates in a communication network, which communication network is adapted to wirelessly serve a network device via a Radio Access, RA, node. The network node obtains information from the network device, which information comprises a category of the network device and a number of layers supported by the network device. The network node determines a length of a codebook subset restriction based on the information obtained from the network device. The network node further sends a codebook subset restriction bit map to the network device, according to the determined length of the codebook subset restriction.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: July 30, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Namir Lidian, SaiRamesh Nammi
  • Patent number: 10361898
    Abstract: An OFDM signal may include a first edge band signal corresponding to a first edge band of the bandwidth of the OFDM signal, a second edge band signal corresponding to a second edge band of the bandwidth, and a center band signal corresponding to a center band of the bandwidth. The OFDM signal may be filtered by filtering the first edge band signal and/or the second edge band signal, so that out-of-band radiation of the OFDM may be reduced or eliminated.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: July 23, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ming Jia, Jianglei Ma
  • Patent number: 10361753
    Abstract: Aspects of the subject disclosure may include, for example, a network termination includes a downstream channel modulator modulates downstream data into downstream channel signals to convey the downstream data via a guided electromagnetic wave that is bound to a transmission medium of a guided wave communication system. A host interface sends the downstream channel signals to the guided wave communication system and receives upstream channel signals corresponding to upstream frequency channels from the guided wave communication system. An upstream channel demodulator demodulates upstream channel signals into upstream data. Other embodiments are disclosed.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: July 23, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Robert Bennett, Paul Shala Henry, Irwin Gerszberg, Farhad Barzegar, Donald J Barnickel, Thomas M. Willis, III
  • Patent number: 10348482
    Abstract: The disclosed apparatus may include (1) a plurality of SerDes devices that each facilitate transmitting and receiving communications in connection with a network device and (2) at least one phase-adjustment device communicatively coupled to a first SerDes device included in the SerDes devices, wherein the phase-adjustment device mitigates crosstalk among the SerDes devices by (A) receiving at least one reference clock signal, (B) generating at least one phase-adjusted clock signal based at least in part on the reference clock signal such that the phase-adjusted clock signal and the reference clock signal are out of phase with respect to one another, and (C) delivering the phase-adjusted clock signal to the first SerDes device to ensure that the SerDes devices are switching out of phase with respect to one another. Various other apparatuses, systems and methods are also disclosed.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: July 9, 2019
    Assignee: Juniper Networks, Inc
    Inventors: Mark Simpson, Boris Reynov, Bipin Dhavale
  • Patent number: 10348477
    Abstract: A disclosure of the present specification provides a method for transmitting an uplink channel and a demodulation reference signal (DMRS) by a machine type communication (MTC) device. The method may comprise the steps of: determining a frequency resource area for transmitting an uplink channel so as to have a size equal to or smaller than the size of a physical resource block (PRB) including 12 subcarriers; generating a DMRS sequence for some sub-carriers among the 12 subcarriers when the frequency resource area for transmitting the uplink channel is determined to have a size smaller than the size of the PRB including the 12 subcarriers; and transmitting the uplink channel and the DMRS on the some subcarriers in the PRB.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: July 9, 2019
    Assignee: LG ELECTRONICS
    Inventors: Hyangsun You, Yunjung Yi, Bonghoe Kim, Joonkui Ahn, Hanjun Park
  • Patent number: 10326512
    Abstract: Embodiments of the present disclosure provide a method and apparatus for multi-input multi-output MIMO communications in a wireless communication network. The method comprises: receiving, from a device, long-term precoding information for the MIMO communication, the long-term precoding information indicating a first group of beams for a first antenna polarization, and a second group of beams for a second antenna polarization (S201); receiving, from the device, short-term precoding information for use in the MIMO communication, the short-term precoding information indicating beams selected respectively from the first group of beams and the second group of beams for different antenna polarizations (S202); constructing a precoding matrix for the MIMO communication according to the long-term precoding information and short-term precoding information (S203); and transmitting data encoded according to the precoding matrix to the device (S204).
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: June 18, 2019
    Assignee: Alcatel Lucent
    Inventors: Xun Li, Nan Li, Min Zhang, Tao Yang
  • Patent number: 10320602
    Abstract: A data processing method and an apparatus, where the method includes receiving m data streams using m receive ports respectively, where the m data streams include m×m data units, and the m×m data units form an m-order matrix A, keeping a location of one element in each row in the matrix A unchanged and moving remaining m?1 elements to remaining m?1 rows respectively in order to form an m-order matrix B, where a column number of each element in the remaining m?1 elements in the matrix A before the element is moved equals a column number of the element in the remaining m?1 elements in the matrix B after the element is moved, and sending using m transmit ports, the m×m elements in the matrix B to m different levels of a pulse amplitude modulation (PAM) circuit respectively for performing modulation.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: June 11, 2019
    Inventors: Wenbin Yang, Xinyuan Wang, Tongtong Wang
  • Patent number: 10320431
    Abstract: Techniques and architectures for multi-stage cancellation of self-interference (SI) and joint cancellation of mutual-interference (MI) and residual SI in signals received by devices of a full-duplex multi-cell network are disclosed. In various examples, channel estimations and interference cancellation operations are performed utilizing multiple orthogonal training signals transmitted by network devices during a common over-the-air training period. Training signals derived from the orthogonal training signals during transmission are utilized to generate SI estimation information and perform at least a first SI cancellation operation on a received signal that includes at least first and second orthogonal training signals. The received signal and orthogonal training signals are then used to estimate a MI channel impulse response and a (residual) SI channel impulse response for use in joint MI/SI cancellation operations on further received signals.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: June 11, 2019
    Inventors: Huan Wu, Eddy Shi Ning Hum, Wan Yi Shiu
  • Patent number: 10320523
    Abstract: A method for detecting a sent sequence, a receiver, and a receiving device in order to simplify an algorithm for detecting a sent sequence and improve detection efficiency. The method for detecting a sent sequence includes determining a maximum possible candidate value of each element in N elements of a received element sequence to obtain N maximum possible candidate values, where N is a positive integer, determining state sequences corresponding to the N maximum possible candidate values as reserved sequences to obtain N groups of reserved sequences, performing likelihood computation on the N groups of reserved sequences, and setting a reserved sequence that is in the N groups of reserved sequences and is most consistent with the element sequence as a detected sent sequence.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: June 11, 2019
    Inventors: Bentao Wu, Bangning Mao
  • Patent number: 10305536
    Abstract: A method for converting source data to a channel-modulated signal having a plurality of pairs of in-phase (I) and quadrature-phase (Q) data in a mobile station, wherein the mobile station uses at least one channel, includes the steps of: a) encoding the source data to generate at least one data part and a control part; b) generating at least one spreading code to be allocated to the channel, wherein each spreading code is selected on the basis of a data rate of the data part and the control part and spreading codes are selected so that two consecutive pairs of the I and Q data are correspondent to two points located on same point or symmetrical with respect to a zero point on a phase domain; and c) spreading the control part and the data part by using the spreading code, to thereby generate the channel-modulated signal.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: May 28, 2019
    Inventors: Seung-Chang Bang, Tae Joong Kim, Jae Heung Kim, Jung Im Kim, Jong Suk Chae, Hyuck Jae Lee, Jae Ryong Shim, Narm Hee Lee
  • Patent number: 10305707
    Abstract: A digital down-converter with baseband equalization comprises a composite analog-to-digital converter (ADC) adapted to convert an applied RF analog signal to be processed to a digital signal, and then down-convert the digital signal to a baseband frequency region, and then perform equalization on the down-converted digital signal, thereby reducing distortions caused by introduction of spurious signals by the ADC.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: May 28, 2019
    Assignee: Guzik Technical Enterprises
    Inventors: Anatoli B. Stein, Semen P. Volfbeyn, Alexander Taratorin
  • Patent number: 10243765
    Abstract: Described herein are systems and methods of receiving first and second input signals at a first two-input comparator, responsively generating a first subchannel output, receiving third and fourth input signals at a second two-input comparator, responsively generating a second subchannel output, receiving the first, second, third, and fourth input signals at a third multi-input comparator, responsively generating a third subchannel output representing a comparison of an average of the first and second input signals to an average of the third and fourth input signals, configuring a first data detector connected to the second subchannel output and a second data detector connected to the third subchannel output according to a legacy mode of operation and a P4 mode of operation.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: March 26, 2019
    Assignee: KANDOU LABS, S.A.
    Inventors: Amin Shokrollahi, Roger Ulrich
  • Patent number: 10218554
    Abstract: An OFDM transmitter and an OFDM receiver respectively transmit and receive N (N?2, N is an integer) control symbols. For each control symbol, a guard interval time-domain signal is, for example, identical to a signal obtained by frequency-shifting at least a portion of a useful symbol time-domain signal by an amount different from any other symbol, or to a signal obtained by frequency-shifting one or both of a portion and a span of a useful symbol interval time-domain signal different from any other symbol by a predetermined amount.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: February 26, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Yoshinobu Matsumura, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10218416
    Abstract: Embodiments herein describe a network device (e.g., an access point) that dynamically arranges multi-user (MU) multiple input multiple output (MIMO) compatible client devices into MU-MIMO groups. That is, the network device uses network metrics and historical data to change the assignment of client devices in the MU-MIMO groups which may improve MU-MIMO efficiency by reducing the amount of power that leaks between the clients devices in the group. In one embodiment, the AP identifies a MU-MIMO group based on a performance evaluation such as evaluating network metric or determining if the group is underutilized. The AP can replace the identified MU-MIMO group with a substitute MU-MIMO group where the substitute MU-MIMO group is selected based on historical data corresponding to the client devices assigned to the substitute MU-MIMO group.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: February 26, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Matthew A. Silverman, Paul J. Stager, David S. Kloper, Brian D. Hart, Qing Zhao
  • Patent number: 10193721
    Abstract: Methods, apparatus and computer programs for transmitting and/or receiving information are described. Information encoded in a carrier signal comprising a modulation pattern superimposed on a grid frequency at which electricity flows in a synchronous area of an electric power grid, is decoded by measuring, at a receiving device, a characteristic relating to a frequency of electricity flowing in the electric power grid, accessing data indicative of one or more predetermined code patterns and performing a correlation process to determine a correlation between the modulation pattern and one of the one or more predetermined code patterns. The information is decoded on the basis of the determined correlation. This enables information to be easily transmitted within a synchronous area of the electric power grid.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: January 29, 2019
    Assignee: Reactive Technologies Limited
    Inventor: Heikki Huomo
  • Patent number: 10193508
    Abstract: A multi-level, multi-branch outphasing amplifier (20-1) includes a first branch group circuit (22-1) including a first branch circuit (11) receiving a first RF input signal (S1(t)) and first control information (S11_Ctrl=VDD) and a second branch circuit (12) receiving the first input signal and second control information (S12_Ctrl). Each of the first (11) and second (12) branch circuits includes a power amplifier. The second control information enables the second branch circuit to be switched on or off while the first branch circuit (12) remains on. A second branch group circuit (22-2) includes a third branch circuit (21) receiving a second RF input signal (S2(t)) and third control information (S21_Ctrl=VDD) and a fourth branch circuit (22) receiving the second input signal (S2(t)) and fourth control information (S22_Ctrl). Each of the third and fourth branch circuits includes a power amplifier.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: January 29, 2019
    Inventors: Aritra Banerjee, Rahmi Hezar, Lei Ding, Nathan Richard Schemm
  • Patent number: 10177937
    Abstract: The present invention relates to a method and apparatus for adaptive channel estimation for signal-amplitude-based communications systems. In one arrangement, the method comprises: receiving an observation (r) of a transmitted coded symbol (d); generating, with a weight generator, a first coefficient (v) for weighting the received observation based on an estimate of the transmitted coded symbol (d_est), the first coefficient having a magnitude that is invariable with the amplitude of the transmitted coded symbol; and forming a new channel estimate (h_est) based on a weighted observation using the first coefficient (v).
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: January 8, 2019
    Assignee: Cohda Wireless Pty Ltd.
    Inventor: Paul Dean Alexander