Patents Examined by Young T. Tse
  • Patent number: 10230479
    Abstract: A method and system for measuring a device under test are disclosed. In some embodiments, an electromagnetic measurement system to test a device under test, DUT is provided. The system includes, at a central location, an emulator core configured to introduce an impairment in each of at least one transmit signal to produce a digital impaired signal; and at a remote location, a transmitter configured to convert the digital impaired signal to an analog RF signal.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: March 12, 2019
    Assignee: ETS-Lindgren Inc.
    Inventor: Michael David Foegelle
  • Patent number: 10225123
    Abstract: A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: March 5, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10218547
    Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may modulate a first binary sequence using binary phase shift keying on a first axis of a complex plane. The device may modulate a second binary sequence using binary phase shift keying on a second plane of a complex axis. The first axis and the second axis may be orthogonal. The device may transmit the first binary sequence and the second binary sequence according to the modulation of the first binary sequence and the second binary sequence.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: February 26, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Wei Zeng, Joseph Binamira Soriaga, Tingfang Ji
  • Patent number: 10218430
    Abstract: An integrated analog to digital converting and digital to analog converting (ADDA) RF transceiver for satellite applications, configured to replace conventional analog RF down and up conversion circuitry. The ADDA RF transceiver includes one of more ADCs, DSPs, and DACs, all on a single ASIC. Further, the circuity is to be radiation tolerant for high availability and reliability in the ionizing radiation environment present in the space environment.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: February 26, 2019
    Assignee: SEAKR ENGINEERING, INC.
    Inventors: Erik Buehler, Damon Van Buren, Paul Rutt
  • Patent number: 10211919
    Abstract: In a communications system having an analog channel configured to convey a data signal from a transmitter to a receiver, a method of mitigating narrow-band impairment imposed by the analog channel on the data signal within a bounded spectral region of a spectrum of the data signal. A transmitter digital signal processor (Tx DSP) applying a first adaptation function to the data signal prior to transmitting the data signal through the analog channel. A receiver digital signal processor (Rx DSP) applying a second adaptation function to the data signal received through the analog channel. The first and second adaptation functions are selected to cooperatively mitigate effects of the narrow-band impairment imposed by the analog channel.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: February 19, 2019
    Assignee: CIENA CORPORATION
    Inventors: Shahab Oveis Gharan, Kim B. Roberts
  • Patent number: 10205522
    Abstract: A method including receiving, via a frontend of a communication device from a communication link, a cascaded waveform modulation with embedded control signal (CWM-CS); performing time-domain demultiplexing on the CWM-CS to obtain a first waveform modulation signal (W1), a second waveform modulation signal (W2), and a control signal (CS); training a channel equalizer based on the control signal; performing channel equalization on the first waveform modulation signal, the second waveform modulation signal, and the control signal CS; performing time-domain de-multiplexing on the first waveform modulation signal W1, the second waveform modulation signal W2, and the control signal CS; applying a rounding function to the first waveform modulation signal W1; generating a recovered signal (S), by summing the first waveform modulation signal W1 and the second waveform modulation signal W2; recovering data from the recovered signal S; and recovering control information by demodulating the control signal CS.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: February 12, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Xiang Liu, Huaiyu Zeng
  • Patent number: 10181884
    Abstract: A method performed by a base station of enabling a User Equipment, UE, to determine a precoder codebook in a wireless communication system is provided. The base station transmits (303) to the UE, information regarding precoder parameters enabling the UE to determine the precoder codebook. The precoder parameters are associated with a plurality of antenna ports of the base station. The precoder parameters relate to a first dimension and a second dimension of the precoder codebook. The plurality of antenna ports comprises a number NT of antenna ports that is a function of a number Nh of antenna ports in the first dimension, and a number Nv of antenna ports in the second dimension.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: January 15, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: George Jöngren, Sebastian Faxér, Simon Jämyr, Niklas Wernersson
  • Patent number: 10182439
    Abstract: An apparatus and a method. The apparatus includes a channel estimation (CE) module, including a first input for receiving pilot resource element (RE) observations, a second input for receiving data RE observations, a third input for receiving log-likelihood ratios (LLRs), and an output; a detector, including a first input connected to the output of the CE module, a second input for receiving data RE observations, and an output connected to the third input of the CE module; and a decoder, including an input connected to the third input of the CE module, and an output.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: January 15, 2019
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Yoo Jin Choi, Dongwoon Bai, Sungsoo Kim, Jungwon Lee
  • Patent number: 10177876
    Abstract: A sequence detector is provided for detecting symbol values corresponding to a sequence of input samples obtained from a transmission channel. The sequence detector comprises a branch metric unit (BMU), a path metric unit (PMU) and a survivor memory unit. The branch metric unit calculates branch metrics for respective possible transitions between states of a trellis. The path metric unit accumulates branch metrics provided by the branch metric unit in order to establish path metrics. The survivor memory unit selects a survivor path based on the path metrics and outputs a survivor sequence of the detected symbols corresponding to the survivor path. The sequence detector is configured such that the synchronization length is different than the survivor path memory length.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: January 8, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Giovanni Cherubini, Roy D. Cideciyan, Thomas H. Toifl, Hazar Yuksel
  • Patent number: 10158508
    Abstract: Methods, systems, and apparatuses are described for generating a phase-shifted signal in a transmit path and a receive path of a transceiver. When transmitting, a quadrature hybrid in the transmit path generates at least one in-phase signal and at least one quadrature signal based on a modulated signal. Phase shifters generate phase-shifted versions of the modulated signal based on a combination of these signals. When receiving, antennas receive a modulated signal and provide the modulated signal to phase shifters in the receive path. Each phase shifter modifies its received modulated signal. A matching network combines each of the modified modulated signals and provides at least one combined modulated signal to a quadrature hybrid. The quadrature hybrid generates a phase-shifted version of the modulated signal based on the at least one combined signal.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: December 18, 2018
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: Michael Boers, Wei Liat Chan, Tirdad Sowlati, Bevin Perumana
  • Patent number: 10145872
    Abstract: A spectrum analyzer for measuring an RF signal over a selected frequency span configured to use multiple Intermediate Frequencies (IFs) for residual, spurious and image signal reduction. The spectrum analyzer has both a primary IF path and a secondary IF path configured to provide band pass filtering of the IF signals. A master clock synthesizer is configured to reduce residual noise by providing from a single Voltage Controlled Oscillator, a master clock signal and a Local Oscillator (LO) signal. The spectrum analyzer has a microcontroller configured to change the frequency of the master clock signal and the LO signal if the center frequency of the selected span is sufficiently close to a known spurious signal.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: December 4, 2018
    Inventor: Justin Crooks
  • Patent number: 10141963
    Abstract: A method of operating a receiver includes a controller of the receiver determining whether a full initialization or a partial initialization of the receiver is needed; the controller adjusting alternating current (AC) characteristics and direct current (DC) characteristics of the receiver in a full initialization mode, and the controller adjusting the DC characteristics of the receiver in a partial initialization mode when the controller determines the partial initialization is needed.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: November 27, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kwi-Sung Yoo, Jae-Youl Lee, Hyun-Wook Lim, Young-Min Choi, Dong-Hoon Baek, Kyong-Ho Kim, Eun-Young Jin
  • Patent number: 10135503
    Abstract: Method and apparatus of obtaining better detection performance by improving matrix condition for an M×N over-determined MIMO system are disclosed. The condition of a matrix to be inverted for solving various detection problems is improved by reordering equations of the original MIMO system, resulting in a reordered channel matrix and reordered received signal vector so that the top N×N sub-matrix has the largest determinant among all N×N sub-matrices of the reordered channel matrix. The disclosed method may be used to obtain a more accurate estimate of the transmit data bits.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: November 20, 2018
    Assignee: ZTE Canada Inc.
    Inventors: Dayong Chen, Yiwen Liu
  • Patent number: 10133301
    Abstract: Source-synchronous communications between networked devices can be hindered by differing clock rates and data interface formats among the devices. By implementing a plurality of clock converters, a data interface format of a transmitting device is converted to a data interface format compatible with a receiving device. The clock converters provide a clock signal based on the source-synchronous data clock, and having a phase controlled with respect to an associated data signal. As a result, data exchange between devices operating at different clock rates is made possible.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: November 20, 2018
    Assignee: Coriant Operations, Inc.
    Inventor: John M. Golding
  • Patent number: 10135548
    Abstract: An apparatus, system, and method are provided for at least mitigating a signal reflection. Included is a filter configured to receive a data signal for transmission, and filter the data signal to generate a filtered data signal. Also included is a gain regulator in electrical communication with the filter. The gain regulator is configured to receive the filtered data signal for adjusting a gain of the filtered data signal to generate a gain regulator output signal for use in at least mitigating a signal reflection. Further, a controller is provided in electrical communication with the filter and the gain regulator. The controller is configured to receive the filtered data signal, and process the filtered data signal to generate at least one controller output signal for use in controlling the filter and the gain regulator.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: November 20, 2018
    Assignee: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Hiroshi Takatori, Zhan Duan, Purackal M. Mammen
  • Patent number: 10122396
    Abstract: Mechanisms for interferer detection can detect interferers by detecting elevated signal amplitudes in one or more of a plurality of bins (or bands) in a frequency range between a maximum frequency (fMAX) and a minimum frequency (fMIN). To perform rapid interferer detection, the mechanisms downconvert an input signal x(t) with a local oscillator (LO) to a complex baseband signal xI(t)+jxQ(t). xI(t) and xQ(t) are then multiplied by m unique pseudorandom noise (PN) sequences (e.g., Gold sequences) gm(t) to produce m branch signals for I and m branch signals for Q. The branch signals are then low pass filtered, converted from analog to digital form, and pairwise combined by a pairwise complex combiner. Finally, a support recovery function is used to identify interferers.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: November 6, 2018
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Peter R. Kinget, John Wright, Rabia Tugce Yazicigil
  • Patent number: 10119822
    Abstract: Vibration gyroscope circuitry, connectable to a vibrating MEMS gyroscope, includes drive circuitry for driving the gyroscope and a measurement circuit for providing a drive measurement signal indicating displacement of a mass along a drive axis. Sense circuitry processes a sense measurement signal of the gyroscope indicating displacement of the mass along a sense axis. A digital sample clock generator includes an oscillator for generating a master clock, a counter for counting master clock periods during one period of an input signal derived from the drive measurement signal, and a number count monitor for determining during how many input signal periods the number count stays constant and for comparing a number of constant periods with a critical number of constant periods. A frequency shifter triggers the oscillator to shift the master clock frequency whenever the monitor determines that the number of constant periods exceeds the critical number of constant periods.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: November 6, 2018
    Assignee: NXP USA, Inc.
    Inventors: Thierry Cassagnes, Hugues Beaulaton, Laurent Cornibert, Yean Ling Teo
  • Patent number: 10103912
    Abstract: Data communication/transfer has been in binary form from the first simple service through today's complex internet systems. Binary uses zeros and ones transmitted as voltage changes. The invention introduces multi-state digits beyond zeroes and ones to a multi-schema, one, two, three and/or more, thus increasing capacity and speed of data transfer. The present invention uses an electrical pulse that can be phased to communicate the binary data in a multi-phased format. The phased information pulse results in a significant increase in combinations used for the transfer of information. This format improves capacity utilization of networks, increases data transfer speed and secondly provides new opportunities for applications. In the future, the invention can also provide added benefits in data centers and communications security.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: October 16, 2018
    Inventor: Ervin A Paw
  • Patent number: 10084633
    Abstract: A system comprises an analog front end (AFE), an analog-to-digital converter (ADC), and alias detection circuitry. The AFE may be operable to receive an analog signal via a communication medium, wherein a first frequency band of the analog signal is occupied by an OFDM symbol and a second frequency band of the analog signal is occupied by first aliases generated during digital-to-analog conversion of the OFDM symbol. The ADC is operable to digitize the particular band of the analog signal to generate a digital signal, wherein, during the digitization, aliasing of the first aliases results in second aliases which fall into the first frequency band. The alias detection circuitry is operable to detect the second aliases in the first frequency band of the digital signal, and process the digital signal based on the detected second aliases to generate an output signal.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: September 25, 2018
    Assignee: Maxlinear, Inc.
    Inventor: Curtis Ling
  • Patent number: 10080601
    Abstract: In a multi-electrode ablation system, method, and controller, a power supply is configured to be coupled to a plurality of electrodes, and a controller is coupled to the power supply. The controller is configured to couple an output voltage of the power supply to the plurality of electrodes, and for each electrode of the plurality of electrodes, measure a temperature associated with the electrode, and determine a thermal gain of each electrode of the plurality of electrodes.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: September 25, 2018
    Assignee: ST JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
    Inventors: Joseph Allen Brotz, John Eric Hein, Raymond Vincent Froehlich, Joseph William Barnier