Patents Examined by Aristocratis Fotakis
  • Patent number: 10727788
    Abstract: Circuits and methods for reducing the cost and/or power consumption of a user terminal and/or the gateway of a telecommunications system (550) that may include a telecommunications satellite. Embodiments generate a dynamic input bias signal based upon an information signal envelope (which may be pre-distorted) which is applied to the signal input of a power amplifier (PA), thus reducing average power consumption. Other embodiments further include dynamic linearization (518) of the information signal, and/or variation of the supply voltage to the power amplifier (PA) as a function of the envelope of the information signal. Another aspect is a multi-stage “chained” feedback regulated voltage supply circuit for providing two or more output voltages that may be used as alternative supply voltages to a power amplifier (PA).
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: July 28, 2020
    Assignee: VIASAT, INC.
    Inventors: Branislav A Petrovic, Kenneth V Buer, Kenneth P Brewer, Steve L Kent, Sateh Jalaleddine
  • Patent number: 10727917
    Abstract: There is provided mechanisms for beamforming of beams. A method is performed by a radio transceiver device. The method comprises performing beamforming by switching between communicating in a first set of beam patterns and in a second set of beam patterns. The first set of beam patterns and the second set of beam patterns comprise equally many beams. Signals in the beams are communicated with a first set of other radio transceiver devices in the first set of beam patterns and with a second set of other radio transceiver devices in the second set of beam patterns. The first set of other radio transceiver devices and the second set of other radio transceiver devices at least partly overlaps.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: July 28, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik Athley, Sven Petersson
  • Patent number: 10720960
    Abstract: A system and method for transmitting a digital signal comprising includes a random number generator for generating a pseudorandom code. A scheduler stores a plurality of signal sequences each matching a set of bandwidth-time products and center frequencies with a stored code. The scheduler selects a signal sequence by matching the pseudorandom code with one of the stored codes. The scheduler selects a bandwidth-time product and center frequency based on the selected signal sequence. A baseband processing unit generates the digital signal based on a selected bandwidth-time product and center frequency. A front end processing and beamforming unit broadcasts the digital signal.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: July 21, 2020
    Assignee: Raytheon Company
    Inventors: Theodore Mark Kellum, William D. Phillips
  • Patent number: 10700802
    Abstract: Methods, systems, and devices for wireless communication are described. A base station may configure bursts of synchronization signal (SS) blocks for discovery reference signal (DRS) transmission. The base station may transmit an SS block set in an SS burst according to a beam sweep pattern, which may be repeated for a subsequent SS block set. The base station may configure a number of SS block sets in each SS burst and transmit each SS block in an SS block set using a different beam. Each SS burst may be transmitted according to a different beam sweep pattern and the base station may repeat transmission of SS bursts according to a DRS repetition periodicity. A user equipment (UE) may sweep through antenna sub-arrays during reception of an SS burst to determine a suitable sub-array for communication.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: June 30, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Arumugam Chendamarai Kannan, Chirag Sureshbhai Patel, Tao Luo, Tamer Kadous
  • Patent number: 10693695
    Abstract: A transmitter comprises a first peak-to-average-power ratio (PAPR) suppression circuit and a second peak-to-average-power ratio (PAPR) suppression circuit. The first PAPR suppression circuit may receive a first sequence of time-domain symbols to be transmitted, alter the first sequence based on each of a plurality of symbol ordering and/or inversion descriptors to generate a corresponding plurality of second sequences of time-domain symbols, measure a PAPR corresponding to each of the second sequences, select one of the plurality of symbol ordering and/or inversion descriptors based on the measurement of PAPR, and convey the selected one of the symbol ordering and/or inversion descriptors to the second PAPR suppression circuit. The second PAPR suppression circuit may receive the first sequence of time-domain symbols to be transmitted, and alter the first sequence based on the selected one of the symbol ordering and/or inversion descriptors to generate a reordered and/or inverted symbol sequence.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: June 23, 2020
    Assignee: MAXLINEAR, INC.
    Inventors: Curtis Ling, Tim Gallagher, Elad Shaked
  • Patent number: 10693684
    Abstract: A symbol rate determination method for determining a symbol rate of an input signal is disclosed. The method comprises: receiving the input signal; determining respective pulse widths of pulses contained in the input signal; allocating the pulse widths to groups based on a magnitude of the respective pulse widths; determining a group pulse width for each of the groups, the group pulse width being representative of the pulse widths contained in the respective group; and determining the symbol rate based on the determined group pulse widths. Moreover, a measurement instrument for determining a symbol rate of an input signal is disclosed.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: June 23, 2020
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventor: Christoph Holzleitner
  • Patent number: 10693538
    Abstract: An apparatus generates a first broadcast beam by feeding a first broadcast beam signal to a first set of dual polarized antenna elements at a first input for a first polarization and a second set of dual polarized antenna elements at a second input for a second polarization. The apparatus generates a second broadcast beam by feeding a second broadcast beam signal to a third set of dual polarized antenna elements at a first input for the first polarization and to a fourth set of dual polarized antenna elements at a second input for the second polarization.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: June 23, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Titos Kokkinos, Christoph Spranger, Bruno Biscontini
  • Patent number: 10686508
    Abstract: Fast calculation of channel state information using demodulation reference signals (DM-RS) is provided herein. The channel state information can be calculated by estimating the signal to noise ratio of a communication link based on the DM-RS, and then estimating the channel quality indicator based on the SINR. The advanced receivers can use list-based detection methods which the estimated SINR can improve the performance thereof. Channel state information is traditionally calculated based on the channel state reference signals (CS-RS). Demodulation reference signals, which are used for channel estimation for a data channel, are transmitted at different times than CS-RS however, and so some portions of the channel state information including layer indicator (LI) and channel quality indicator (CQI) can be calculated based on the demodulation reference signals, allowing a network to adapt more quickly to changing channel conditions, without having to transmit a CS-RS.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: June 16, 2020
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Patent number: 10687336
    Abstract: A transmitter of the present disclosure includes: an output terminal; a driver that performs transition of a voltage of the output terminal among a plurality of voltages; and a controller that controls the driver to cause transition start timing in one voltage transition in voltage transition among the plurality of voltages to be later than transition start timing in another voltage transition.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: June 16, 2020
    Assignee: Sony Corporation
    Inventor: Takanori Saeki
  • Patent number: 10680793
    Abstract: A circuit for estimating a time difference between a first signal and a second signal, the circuit comprising: a first signal line for receiving the first signal; a delay unit configured to receive the second signal and delay the second signal so as to provide a plurality of delayed versions of the second signal, each delayed version being delayed by a different amount of delay to the other delayed versions; a comparison unit configured to compare each of the delayed versions of the second signal with the first signal so as to identify which of the delayed versions of the second signal is the closest temporally matching signal to the first signal; and a difference estimator configured to estimate the time difference between the first and second signals in dependence on the identified delayed version.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: June 9, 2020
    Assignee: Imagination Technologies Limited
    Inventors: Ravichandra Giriyappa, Vinayak Prasad, Oana Rosu
  • Patent number: 10673480
    Abstract: A device for transmitting and receiving signals for a radio network comprises an air interface; a MIMO antenna; and an antenna-side frequency conversion device provided between the air interface and a home distribution network. The antenna-side frequency conversion device comprises at least one frequency converter via which the receive signals obtained via the at least one polarization of the dual-polarized antenna or via at least one of the at least two antennae can be converted into an intermediate frequency range that is unused and/or free in the home distribution network. At least one receive-side frequency back-conversion device is provided between the home distribution network and a receiver. The receive-side frequency back-conversion device is configured in such a way that a frequency back-conversion of the frequencies converted into an unused frequency range can be fed back into the received frequency range.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: June 2, 2020
    Assignee: Kathrein-Werke KG
    Inventors: Roland Gabriel, Georg Schell, Michael Heisenberg
  • Patent number: 10666307
    Abstract: A nonlinear compensator is provided to include a decomposition circuit and a plurality of filter elements. The decomposition circuit has a nonlinear frequency response characteristic and the decomposition circuit is configured to receive an input signal and decompose the input signal into decomposed signals corresponding to positive and negative frequency signal components of the input signal. Each of the plurality of filter elements is configured to receive at least portions of the decomposed signals and apply filter element characteristics to the decomposed signals with the filter element characteristics that are matched to the nonlinear frequency response of the decomposition circuit.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: May 26, 2020
    Assignee: Massachusetts Institute of Technology
    Inventor: Xiao-Yu Wang
  • Patent number: 10615778
    Abstract: A crest factor reduction (CRF) circuit may include a scaler configured to receive the input signal and generate a scaled input signal. A clipping circuit may be configured to receive the input signal and generate a clipped input signal. A negator circuit may be configured to receive the clipped input signal and generate a negated clipped input signal. A first summer may be configured to sum the scaled input signal and the negated clipped input signal to generate a summed signal. A first digital filter may be configured to receive the summed signal and provide a first digital filter output. A second digital filter may be configured to receive the clipped input signal and provide a second digital filter output. A multiplexer may be configured to receive the first digital filter output and the second digital filter output and generate an output signal.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: April 7, 2020
    Assignee: Analog Devices, Inc.
    Inventor: James C. Camp
  • Patent number: 10616028
    Abstract: An apparatus is configured to, based on a first signal comprising one or more data transmission frames received from a first radio device by a second radio device. The first signal has a particular carrier frequency of a carrier wave thereof and the one or more data transmission frames comprising a plurality of symbols provided at a particular symbol frequency. The carrier frequency and symbol frequency based on a reference clock frequency of the first radio device. One or more of an estimate of the particular carrier frequency is determined and an estimate of the particular symbol frequency relative to a reference clock frequency of the second radio device and provide for transmission of a response signal from the second radio device to the first radio device.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: April 7, 2020
    Assignee: NXP B.V.
    Inventors: Marinus van Splunter, Arie Geert Cornelis Koppelaar, Frank Leong
  • Patent number: 10616847
    Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may receive a plurality of synchronization signal blocks, wherein the plurality of synchronization signal blocks include a synchronization signal block and one or more retransmissions of the synchronization signal block that are received in a synchronization interval, and wherein two or more synchronization signal blocks, of the plurality of synchronization signal blocks have a fixed relationship in time. The wireless communication device may determine synchronization information based at least in part on one or more of the plurality of synchronization signal blocks and the fixed relationship in time. Numerous other aspects are provided.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: April 7, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Hung Ly, Tao Luo, Heechoon Lee, Haitong Sun
  • Patent number: 10615954
    Abstract: Systems and methods are provided for low-power asynchronous data links. A receiver may obtain from signals, received from a transmitter over low-power asynchronous links, recovery information embedded into the signals at the transmitter, and may determine based on the recovery information, control parameters that may be used in configuring a control signal applied during processing of the signals. The signals may be processed based on the control signal, with the processing comprising extraction of data embedded in the signals at the transmitter. The transmitter may generate, based on an input datastream, signals configured for transmission to the receiver, over low-power asynchronous data links, and may embed into the signals, the recovery information that enables determining, at the receiver, parameters relating to the signals and/or to the generating of the signals. The control parameters may comprise parameters relating to the signals and/or processing of the signals at the transmitter.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: April 7, 2020
    Assignee: MAXLINEAR, INC.
    Inventor: Sheng Ye
  • Patent number: 10602398
    Abstract: A method includes sampling a common signal over a plurality of iterations, concatenating the sampled iterations, summing samples of the concatenated iterations within a window of a predetermined sample width, at each of a plurality of window positions along the concatenated iterations, and estimating noise of the common signal from the summed sample values at the window positions.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: March 24, 2020
    Assignee: Apple Inc.
    Inventors: Steven E. Saunders, Alexandros Tourapis, Krasimir Kolarov
  • Patent number: 10574294
    Abstract: In accordance with one or more embodiments, a communication network includes a surface wave transceiver, mounted on a coaxial cable of a broadband cable network, configured to bidirectionally communicate wireless network data via guided electromagnetic waves that propagate along a surface of the coaxial cable. A plurality of analog surface wave repeater pairs, and a plurality of digital surface wave regenerator pairs, are also mounted on the coaxial cable. A plurality of access points, supported by corresponding ones of a plurality of utility poles that also support the coaxial cable, is configured to wirelessly transmit the wireless network data to a plurality of client devices in accordance with a wireless network protocol and to wirelessly receive client data from the plurality of client devices in accordance with the wireless network protocol. A plurality of surface wave add/drop multiplexer pairs, is also mounted on the coaxial cable.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: February 25, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Farhad Barzegar, Irwin Gerszberg, Thomas M. Willis, III, Paul Shala Henry, Robert Bennett, Donald J. Barnickel, Giovanni Vannucci
  • Patent number: 10567030
    Abstract: The disclosure relates to a radio modem for a motor vehicle, having an antenna arrangement, an AD-DA converter and a processor for exchanging communications data between the motor vehicle and at least one object in the vicinity of the motor vehicle. The processor is configured to provide at least one communications standard, which in each case specifies a digital protocol stack for controlling the exchange of communications data and a radio frequency f0 for a radio signal, and implementing every provided communications standard by operating the associated protocol stack and by providing a digital mixer, which is coupled on a baseband side to the protocol stack and on an HF side to the AD-DA converter and which provides for the radio frequency f0 on the HF side, wherein the AD-DA converter is connected directly between the processor and the antenna arrangement.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: February 18, 2020
    Assignee: Audi AG
    Inventor: Jürgen Spehl
  • Patent number: 10554266
    Abstract: A user equipment can be configured to evaluate a reference signal from a network node and determine channel state information comprising a format indicator, wherein the format indicator comprises a rank indicator and the channel state information spatial resolution type. The user equipment can transmit to the network node the channel state information, which can be decoded by a network node to determine transmission scheduling parameters to be transmitted to the user equipment.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: February 4, 2020
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Xiaoyi Wang, Salam Akoum, Arunabha Ghosh