Patents Examined by Zewdu A Kassa
  • Patent number: 11223382
    Abstract: A ULCA device and a mobile terminal are provided. The ULCA device includes an RF transceiver, at least two PAs, one power-amplifier power module, a control chip, a multiplexer, and an antenna switch. The RF transceiver is connected to the at least two PAs. The at least two PAs are connected to the multiplexer, which is connected to the antenna switch. The control chip is connected to the RF transceiver and the power-amplifier power module, and configured to determine supply voltage needed by each PA, determine target voltage to be output by the power-amplifier power module based on maximum supply voltage, and send a power supply instruction to the power-amplifier power module. The power-amplifier power module is connected to the at least two PAs, and configured to regulate the target voltage according to the power supply instruction and output the target voltage to the at least two PAs.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: January 11, 2022
    Inventors: Tianlin Li, Zhimin Lu
  • Patent number: 11205131
    Abstract: Methods and apparatus are provided for calculating branch metrics, associated with possible transitions between states of a trellis, in a sequence detector for detecting symbol values corresponding to samples of an analog signal transmitted over a channel. For each sample and each transition, the method calculates a plurality of distance values indicative of distance between that sample and respective hypothesized sample values for that transition. In parallel with calculation of the distance values, the sample is compared with a set of thresholds, each defined between a pair of successive hypothesized symbol values arranged in value order, to produce a comparison result. An optimum distance value is selected as a branch metric for the transition in dependence on the comparison result.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: December 21, 2021
    Assignee: International Business Machines Corporation
    Inventors: Hazar Yüksel, Giovanni Cherubini, Roy Cideciyan, Simeon Furrer, Marcel Kossel
  • Patent number: 11201765
    Abstract: A receiver has an antenna to receive a pulse shaped transmit signal transmitted by a transmitter of a multi carrier (MC) pulse shaped transmission system. The pulse shaped transmit signal includes a predefined signal pattern. The predefined signal pattern is not subjected to pulse shaping. The receiver includes a filter to pulse shape filter the pulse shaped transmit signal to obtain data for the receiver. The predefined signal pattern is retrieved from the pulse shaped transmit signal prior to filtering the pulse shaped transmit signal.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: December 14, 2021
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Martin Kurras, Thomas Haustein, Lars Thiele, Rohit Datta
  • Patent number: 11201638
    Abstract: Ultra-Wideband (UWB) technology exploits modulated coded impulses over a wide frequency spectrum with very low power over a short distance for digital data transmission. Today's leading edge modulated sinusoidal wave wireless communication standards and systems achieve power efficiencies of 50 nJ/bit employing narrowband signaling schemes and traditional RF transceiver architectures. However, such designs severely limit the achievable energy efficiency, especially at lower data rates such as below 1 Mbps. Further, it is important that peak power consumption is supportable by common battery or energy harvesting technologies and long term power consumption neither leads to limited battery lifetimes or an inability for alternate energy sources to sustain them. Accordingly, it would be beneficial for next generation applications to exploit inventive transceiver structures and communication schemes in order to achieve the sub nJ per bit energy efficiencies required by next generation applications.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: December 14, 2021
    Assignee: Transfert Plus Societe en Commandite
    Inventors: Frederic Nabki, Dominic Deslandes, Mohammad Taherzadeh-Sani, Michiel Soer
  • Patent number: 11196466
    Abstract: Embodiments of this application provide a precoding matrix indication method, a communications apparatus, and a storage medium. A precoding matrix of each of K frequency-domain units satisfies W=W1×W2, and elements in W2 in the K frequency-domain units are represented by P elements that are relatively few. A terminal device reports third indication information, where the third indication information includes first indication information and the second indication information, and the first indication information and the second indication information are independently encoded. The first indication information is used to indicate the P elements, and the second indication information is used to indicate P. Therefore, the terminal device can adjust a quantity of information bits of the second indication information based on a channel condition change, thereby improving precoding matrix reporting efficiency.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: December 7, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ruiqi Zhang, Xueru Li
  • Patent number: 11190147
    Abstract: In one embodiment, an apparatus includes: a digital baseband circuit to receive a digital baseband signal and output a first digital baseband signal and a second digital baseband signal, the second digital baseband signal comprising a scaled version of the first digital baseband signal; a first transmitter signal path coupled to the digital baseband circuit to process the first digital baseband signal and output a first radio frequency (RF) signal; a second transmitter signal path coupled to the digital baseband circuit to process the second digital baseband signal and output a second RF signal; a first power amplifier coupled to the first transmitter signal path to amplify the first RF signal and output an amplified first RF signal; and a second power amplifier coupled to the second transmitter signal path to amplify the second RF signal and output an amplified second RF signal.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: November 30, 2021
    Assignee: Silicon Laboratories Inc.
    Inventors: Mustafa Koroglu, Luigi Panseri, Yu Su, Vitor Pereira
  • Patent number: 11190386
    Abstract: As may be used in connection with frequency-modulated (FM) radio systems and receivers processing FM broadcast transmissions, exemplary aspects are directed to a method may be performed by the receiver circuitry to receive FM broadcast signaling within a particular bandwidth for which a plurality of target channels are to have a specified channel spacing. The method may include: assessing detected energy for a first adjacent channel having the specified channel spacing and having a frequency immediately adjacent to a targeted one of the plurality of target channels; and discerning whether the detected energy is associated with ultra-sonic energy in detected modulation energy (e.g., ultra-sonic noise in an MPX signal), and/or is associated with modulation energy (e.g., due to over-modulation) from a second adjacent channel also having such specified channel spacing.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: November 30, 2021
    Assignee: NXP B.V.
    Inventor: Erik Keukens
  • Patent number: 11177848
    Abstract: Techniques are provided for signal detection based on the Gibbs phenomenon. A methodology implementing the techniques according to an embodiment includes transforming an input signal to the frequency domain and performing median filtering of amplitudes associated with frequency bins of the frequency domain transformed input signal. The median filtering is performed to attenuate longer duration or continuous signal components that may be present in the input signal. The method also includes identifying a sinc function main lobe in the median filtered signal, the sinc function associated with the Gibbs phenomenon. The method further includes detecting a discontinuity in the input signal based on the identified sinc function main lobe. The discontinuity is associated with a shorter duration signal component that is present in the input signal. Shorter duration signal components may include relatively narrow signal pulses and relatively fast rising or falling signal edges.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: November 16, 2021
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Michael A. Zalucki, Tyler M. Hayslett
  • Patent number: 11177874
    Abstract: Provided is an aerial-floating type communication relay apparatus capable of reducing a size and suppressing a movement of a cell footprint. The communication relay apparatus comprises an array antenna that has plural antenna elements forming a cell for performing a radio communication of a service link with a terminal apparatus, an information acquisition section that acquires information on at least one of a position and an attitude of the communication relay apparatus, and a control section that controls phases and amplitudes of plural transmission/reception signals transmitted/received via each of the plural antenna elements of the array antenna so as to fix the position of the cell footprint, based on the information on at least one of the position and the attitude of the communication relay apparatus.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: November 16, 2021
    Assignee: HAPSMobile Inc.
    Inventors: Kenji Hoshino, Shoichi Sudo, Yoshichika Ota
  • Patent number: 11177994
    Abstract: The present disclosure relates to a polar phase or frequency modulator comprising: a normalized delay circuit (602) configured to delay edges of an input carrier signal (CLK_IN) based on normalized delay control values (?i) to generate a modulated output signal (RF_OUT); and a normalized delay calculator (604) configured to receive the modulated output signal (RF_OUT) and to generate the normalized delay control values (?i).
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: November 16, 2021
    Assignee: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: David Lachartre
  • Patent number: 11177894
    Abstract: Methods and systems are described for obtaining a plurality of BER-specific correction values by comparing a first set of BER values obtained by sampling, at a sampling instant near the center of a signaling interval, a non-DFE corrected received signal with a second set of BER values obtained by sampling a DFE-corrected received signal at the sampling instant. A set of eye-scope BER measurements are obtained, each eye-scope BER measurement having a sampling offset relative to the sampling instant, a voltage offset value representing a voltage offset applied to alter a decision threshold, and an eye-scope BER value. A set of DFE-adjusted eye-scope BER measurements are generated by using BER-specific correction values to adjust the voltage offset values of the eye-scope BER measurements.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: November 16, 2021
    Assignee: KANDOU LABS, S.A.
    Inventor: Richard Simpson
  • Patent number: 11165478
    Abstract: One example includes a phased-array antenna system (10). The system includes antenna elements (16) each including an element adjustment circuit (24) and a radiating element (114). A beamforming network (14) receives a carrier signal and generates element carrier signals. A baseband DSP (22) generates a plurality of composite beamforming data signals associated with a respective one of the antenna elements (16) and is generated based on combining individual beamforming data signals. Each of the individual beamforming data signals is associated with a respective beam and is based on combining a data signal associated with the respective beam with an antenna weight associated with the respective beam and the respective one of the antenna elements (16).
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: November 2, 2021
    Assignee: VIASAT, INC.
    Inventors: Peter S. Wyckoff, Joseph J. Luna
  • Patent number: 11159219
    Abstract: Aspects of the disclosure relate to a wireless user equipment (UE) determining a wideband channel quality indicator (CQI) in a wireless communication network. For each of a plurality of CQI hypotheses, a UE divides a bandwidth into a plurality of frequency segments and determines an average spectral efficiency (SPEF) for each of those segments. Further, for each of the plurality of CQI hypotheses, the UE determines the minimum of the average SPEFs. The UE selects the CQI hypothesis corresponding to the maximum from among these determined minimum average SPEFs, and transmits this selected CQI as a wideband CQI. Other aspects, embodiments, and features are also claimed and described.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: October 26, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Parisa Cheraghi, Md Jahidur Rahman, Sharon Levy, Alexei Yurievitch Gorokhov
  • Patent number: 11159200
    Abstract: Aspects of the present disclosure describe systems, methods, and structures for high speed frequency hopping distributed acoustic sensing using an acousto-optic modulated (AOM), gated re-circulating loop and a frequency shifted receiver local oscillator. Using the re-circulating loop controlled by the AOM to generate frequency-hopping pulse(s) increases DAS acoustic bandwidth overcomes infirmities exhibited in the art that generate multiple frequency patterns that are not suitable for long-distance DAS. Additionally, by employing frequency shifted local oscillator (LO) with asymmetric in band detection, bandwidth requirements are reduced by one half.
    Type: Grant
    Filed: January 26, 2019
    Date of Patent: October 26, 2021
    Inventors: Yue-Kai Huang, Ezra Ip, Giovanni Milione, Fatih Yaman
  • Patent number: 11159199
    Abstract: A terminal is disclosed including a processor that determines an offset for a second frequency hop in a frequency hopping on an uplink shared channel based on an uplink Bandwidth Part (UL BWP) configuration; and a transmitter that transmits the uplink shared channel, wherein the UL BWP configuration includes information indicating a number of physical resource blocks (PRBs) in the UL BWP. In other aspects, a base station and a radio communication method for a terminal are also disclosed.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: October 26, 2021
    Assignee: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Satoshi Nagata, Lihui Wang, Xiaolin Hou
  • Patent number: 11159220
    Abstract: A processor coupled to a first communication device produces and transmits a first encoded vector and a second encoded vector to a second communication device via a communication channel that applies a channel transformation to the encoded vectors during transmission. A processor coupled to the second communication device receives the transformed signals, constructs a matrix based on the transformed signals, detects an effective channel thereof, and identifies left and right singular vectors of the effective channel. A precoding matrix is selected from a codebook of unitary matrices based on a message, and a second encoded vector is produced based on a second known vector, the precoding matrix, a complex conjugate of the left singular vectors, and the right singular vectors. A first symbol of the second encoded vector and a second symbol of the second encoded vector are sent to the first communication device for identification of the message.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: October 26, 2021
    Assignee: Rampart Communications, Inc.
    Inventor: Matthew Brandon Robinson
  • Patent number: 11152988
    Abstract: The disclosure relates to techniques for beamforming in multi-user systems. The disclosure particularly relates to a base station for communication with multiple user terminals, the base station comprising: a digital precoder and an analog precoder which are configured to precode a first training signal; a radio transceiver configured to transmit the precoded first training signal and to receive a precoded second training signal upon transmission of the precoded first training signal; and a controller configured to adjust a precoding of the digital precoder based on processing of the second training signal with respect to a normalization criterion and to adjust a precoding of the analog precoder based on processing of the second training signal with respect to a multi-user beamforming criterion.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: October 19, 2021
    Assignee: Apple Inc.
    Inventors: Elisabeth De Carvalho, Carles Navarro Manchon
  • Patent number: 11139879
    Abstract: Provided is a method for determining precoding. The method includes configuring, by a first communication node, configuration information for a second communication node; transmitting the configuration information to the second communication mode; and the configuration information includes: first configuration information and second configuration information. Further provided is a device for determining precoding, an electronic device and a storage medium.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: October 5, 2021
    Inventors: Yong Li, Zhaohua Lu, Chuangxin Jiang, Yijian Chen, Yu Ngok Li, Hao Wu, Jianxing Cai, Yuxin Wang, Huahua Xiao, Cong Zhou
  • Patent number: 11139847
    Abstract: A radio frequency (RF) filter includes a signal conditioning circuit and a bandstop filter. The signal conditioning circuit receives a broadband RF signal that includes both a jamming signal at a jamming frequency and a signal of interest and generates a plurality of clock signals. Each of the plurality of clock signals has a substantially same frequency as the jamming frequency, but a different phase shift. The bandstop filter receives the RF signal and the plurality of clock signals. The bandstop filter attenuates signals within a bandstop centered at the frequency of the plurality of clock signals. A self-tuning N-path filter is provided.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: October 5, 2021
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Mark E. Stuenkel, Mark D. Hickle
  • Patent number: 11139816
    Abstract: A clock and data recovery circuit is disclosed. The clock and data recovery circuit includes a phase detection circuit, a first voting circuit, a low-pass filtering circuit and a phase interpolation circuit. The phase detection circuit is configured to receive a first signal and a clock signal and generate a phase signal. The first voting circuit is configured to charge at least one capacitance component according to the phase signal and generate a first voting signal according to a charging result. The low-pass filtering circuit is configured to generate a phase control signal according to the first voting signal. The phase interpolation circuit is configured to generate the clock signal according to the phase control signal.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: October 5, 2021
    Assignee: PHISON ELECTRONICS CORP.
    Inventors: Jen-Chu Wu, Po-Min Cheng, Wun-Jian Su, Chia-Hui Yu