Patents Examined by Helene Tayong
  • Patent number: 10291459
    Abstract: Coding gains can be achieved by encoding binary data directly to multi-dimensional codewords, which circumvents QAM symbol mapping employed by conventional CDMA encoding techniques. Further, multiple access can be achieved by assigning different codebooks to different multiplexed layers. Moreover, sparse codewords can be used to reduce baseband processing complexity on the receiver-side of the network, as sparse codewords can be detected within multiplexed codewords in accordance with message passing algorithms (MPAs).
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: May 14, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Hosein Nikopour, Mohammadhadi Baligh
  • Patent number: 10237053
    Abstract: A semiconductor device that receives input data synchronized with a first clock signal and generates output data synchronized with a second clock signal, includes a clock delay circuit that generates first and second delay clock signals, first and second synchronized retrieval circuits that respectively retrieve the input data at timings when each of logical values of the second clock signal and second delay clock signal being switched, to respectively obtain first and second retrieved data, and a clock value retrieval circuit that retrieves a value of the first clock signal at timings when the second clock signal and first delay clock signal respectively switch from the first logical value to the second logical value, to respectively output first and second clock values, and an output circuit that outputs, as the output data, the first or second retrieved data, depending on a value of the first and second clock values.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: March 19, 2019
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventor: Teruaki Uehara
  • Patent number: 10230549
    Abstract: Multi-drop communications channels can have significantly deep notches in their frequency response causing a corresponding limitation of the effective data transmission rate. A special time-ordered coding method is described which results in the emitted spectrum of the data stream transmitted into the channel having a notch at the same frequency as the notch in the channel frequency response, permitting channel receivers to successfully decode the transmitted data stream. The described coding method may be applied at various multiples of the channel notch frequency to support different throughput rates, and may be combined with other coding techniques such as group or vector signaling codes.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: March 12, 2019
    Assignee: KANDOU LABS, S.A.
    Inventors: Ali Hormati, Amin Shokrollahi
  • Patent number: 10230421
    Abstract: A method for reducing a distortion component within a baseband receive signal is provided. The baseband receive signal is derived from a radio frequency signal and the distortion component is related to an undesired signal component of the radio frequency signal. The method includes generating a first local oscillator signal having a frequency related to a frequency of the undesired signal component. Further the method includes generating an auxiliary baseband signal using the radio frequency signal and the first local oscillator signal. The method further includes generating a second local oscillator signal having a frequency related to a frequency of a desired signal component of the radio frequency signal. Further the method includes generating the baseband receive signal using the radio frequency signal and the second local oscillator signal. The method includes modifying the baseband receive signal based on the auxiliary baseband signal.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: March 12, 2019
    Assignee: Intel IP Corporation
    Inventors: Ram Kanumalli, Andreas Mayer, Werner Schelmbauer, Ahmed S. Elmaghraby, Burkhard Neurauter
  • Patent number: 10230422
    Abstract: A system for frequency isolation modified self-interference cancellation includes a transmit coupler, that samples an RF transmit signal; an RF self-interference canceller that transforms the sampled RF transmit signal to an RF self-interference cancellation signal; a receive coupler that combines the RF self-interference cancellation signal with the RF receive signal to form a reduced-interference receive signal; and a frequency shifter that frequency shifts only one of the RF transmit signal and the reduced-interference receive signal.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: March 12, 2019
    Assignee: Kumu Networks, Inc.
    Inventors: Dinesh Bharadia, Jeffrey Mehlman, Wilhelm Steffen Hahn
  • Patent number: 10218550
    Abstract: A transmitter or receiver including at least one radio-frequency (RF) chain. The RF chain including an array of transmitting elements, each transmitting element includes a band-pass filter and an antenna connected in series for transmitting an analog signal using a beamforming with an angle of departure (AOD) defined by phase shifts of analog signals received by different transmitting elements within the array. A phase shifter to shift a phase of an input signal. A variable gain amplifier (VGA) to change an amplitude of the input signal. A switcher to connect the phase shifter and the VGA to each transmitting element in the array. Wherein at most one transmitting element is connected to the phase shifter and the VGA at a given point of time, such that the switcher is a single-pole-M-throw (SPMT) analog switch. A controller to control the phase shifter, the VGA and the switcher.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: February 26, 2019
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Kyeong Jin Kim, Zhengyu Peng, Bingnan Wang, Koon Hoo Teo
  • Patent number: 10211972
    Abstract: A clock and data recovery circuit (CDR) includes a digitally controlled oscillator (DCO). A data sampler is coupled to receive a clock signal from the DCO. A deserializer includes an input coupled to an output of the data sampler. A first phase detector is coupled between a first output of the deserializer and a first input of the DCO. A second phase detector is coupled to a second output of the deserializer. An accumulator is coupled between an output of the second phase detector and a second input of the DCO. A frequency lock detection block is coupled to an output of the accumulator. An eye monitor is coupled to an input of the data sampler. The first phase detector controls a delay of the DCO and the accumulator controls a frequency of the DCO. An edge mute signal is coupled to the deserializer.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: February 19, 2019
    Assignee: Rambus Inc.
    Inventors: Mehrdad Ramezani, David J. Cassan, Christopher D. Holdenried, Sang-Wook Paul Park, Marcus Van Ierssel
  • Patent number: 10181941
    Abstract: A sampling phase adjustment device and an adjusting method thereof are disclosed. Sampling phase adjustment device includes feedback summer, adaptive equalizer unit, clock and data recovery (CDR) circuit, data slicer, error slicer, sample calculator unit and enable circuit. The adjusting method is as follows: the data slicer and error slicer receive a sum value generated from the feedback summer, and generate a data signal and an error signal, respectively. The adaptive equalizer unit provides an equalizing signal to the feedback summer and a reference signal to the error slicer. The sample calculator unit generates a sampling adjustment signal based on the data signal and error signal. The CDR circuit is configured to output and adjust a clock signal based on the sampling adjustment signal and data signal. The enable circuit enables the adaptive equalizer unit and the sample calculator unit alternatively.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: January 15, 2019
    Inventors: Yu-Chu Chen, Wen-Juh Kang, Chen-Yang Pan
  • Patent number: 10177815
    Abstract: Systems and methods are provided for powering Multimedia over Coax Alliance (MoCA) devices. An electronic device that is configured for use in a multimedia over coax alliance (MoCA) network may include a communication circuit operable to communicate multimedia over coax alliance (MoCA) based signals over coax cabling in the MoCA network, and one or more power circuits operable to support supplying and/or drawing power over the coax cabling in the MoCA network, to enable powering the electronic device and/or one or more other electronic devices in the MoCA network. The power circuits may include one or more of: a power regulator circuit that draws power from the coax cabling and/or regulates use of the power, a power source circuit that supplies power into the coax cabling, and a power management circuit that manages power related operations in the electronic device and/or in the MoCA network.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: January 8, 2019
    Assignee: MAXLINEAR, INC.
    Inventor: Saju Palayur
  • Patent number: 10158398
    Abstract: A wireless communication terminal apparatus wherein CoMP communication can normally be performed without increasing the overhead of an upstream line control channel. In this apparatus, a spreading unit primarily spreads a response signal by use of a ZAC sequence established by a control unit. A spreading unit secondarily spreads the response signal, to which CP has been added, by use of a block-wise spread code sequence established by the control unit. The control unit controls, in accordance with sequence numbers and a hopping pattern established therein, the circular shift amount of the ZAC sequence to be used for the primary spread in the spreading unit and the block-wise spread code sequence to be used for the secondary spread in the spreading unit. The hopping pattern established in the control unit is a hopping pattern common to a plurality of base stations that CoMP-receive the response signal.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: December 18, 2018
    Assignee: Sun Patent Trust
    Inventors: Seigo Nakao, Hidetoshi Suzuki, Daichi Imamura
  • Patent number: 10158454
    Abstract: The described technology is generally directed towards adaptive interleaving in network communications systems based on one or more conditions with respect to user equipment. When conditions such as the speed of the user equipment indicate that performance can be increased by interleaving the data traffic, data is transmitted to the user equipment using an adaptive interleaver in the coding chain of MIMO systems. The adaptive interleaver is not used when conditions indicate performance is unlikely to improve. Adaptive interleaving may be performed in the frequency domain, in the frequency and time domain, or the frequency time and space domain. Multiple interleavers with different interleaving patterns may be used in the frequency domain and in the frequency and time domain. Adaptive interleaving may be based on one or more various criteria corresponding to the condition data received from the user equipment.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: December 18, 2018
    Inventors: SaiRamesh Nammi, Arunabha Ghosh
  • Patent number: 10154397
    Abstract: A method and apparatus for physically secure communication over machine-to-machine (M2M) networks is claimed, through the use of frequency-hop and random access spread spectrum modulation formats employing using truly random spreading codes and time/frequency hopping and receiver selection strategies at the transmitters in the M2M network, blind signal detection and linear signal separation techniques at the receivers in the M2M network, completely eliminating the ability for an adversary to predict and override M2M transmissions. Additional physical security protocols are also introduced that allow the network to easily detect and identify spoofing transmissions on uplinks and downlinks, and to automatically excise those transmissions as part of the despreading procedure, even if those transmissions are received at a much higher power level than the intended transmissions.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: December 11, 2018
    Inventor: Brian G. Agee
  • Patent number: 10148475
    Abstract: A receiver receives a load modulated analog input signal and outputs digital data detected in the input signal. An in-phase correlator and a quadrature-phase correlator for each of an in-phase component and an quadrature-phase component correlate the in-phase component and the quadrature-component with an in-phase component and a quadrature-phase component of a subcarrier or code clock frequency of the input signal. A combiner combines four output signals of the two in-phase correlators and the two quadrature-phase correlators. A slicer samples an output signal of the combiner at maximum energy levels to output the digital data detected in the input signal.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: December 4, 2018
    Assignee: PANTHRONICS AG
    Inventor: Jakob Jongsma
  • Patent number: 10142135
    Abstract: In the subject system, a receiver includes a feed forward circuit, a phase recovery circuit, and a feedback circuit. The feed forward circuit compensates for near reflections and provides an input to the phase recovery circuit and the feedback circuit. The phase recovery circuit performs phase recovery and provides phase recovery information to the feedback circuit. The feedback circuit adjusts and/or corrects a received symbol based at least in part on the received phase recovery information.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: November 27, 2018
    Assignee: Maxlinear Asia Singapore PTE LTD
    Inventors: Nadav Fine, Evgeny Levitan, Eran Ridel, Ran Soffer, Uri Kanari, Nati Mizrahi
  • Patent number: 10141987
    Abstract: The present invention relates to a method and apparatus for feeding back, by a terminal, reference signal information in wireless communication using a two-dimensional active antenna system including a plurality of antennas. Particularly, the method for feeding back reference signal information comprises the steps of: receiving, from a base station, a reference signal configuration including identifiers of a plurality of reference signals having a first reference signal set and a second reference signal set; receiving the plurality of reference signals to which the precoding is applied; measuring reference signal received power (RSRP) for each of the plurality of reference signals; and transmitting, to the base station, information on at least a part of the first reference signal set and information on at least a part of the second reference signal set, on the basis of the measured RSRP.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: November 27, 2018
    Inventors: Youngtae Kim, Kijun Kim, Yunjung Yi, Jonghyun Park
  • Patent number: 10135664
    Abstract: A transmitting apparatus is disclosed. The transmitting apparatus includes an encoder to perform channel encoding with respect to bits and generate a codeword, an interleaver to interleave the codeword, and a modulator to map the interleaved codeword onto a non-uniform constellation according to a modulation scheme, and the constellation may include constellation points defined based on various tables according to the modulation scheme.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: November 20, 2018
    Inventors: Se-ho Myung, Belkacem Mouhouche, Daniel Ansorregui Lobete, Kyung-joong Kim, Hong-sil Jeong
  • Patent number: 10135649
    Abstract: Embodiments described herein provide a method for performing multi-level coding in a discrete multitone modulation (DMT) communication system. A plurality of data bits are divided into a first number of un-encoded bits and a set of bits to be encoded. The set of bits to be encoded are encoded into a second number of encoded bits. The first number is different from the second number, and the first number is an even number or an odd number. The first number of un-encoded bits and the second number of encoded bits are mapped into a plurality of constellation points. The plurality of constellation points are transmitted as orthogonal frequency-division multiplexing (OFDM) symbols.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: November 20, 2018
    Assignee: Marvell World Trade Ltd.
    Inventors: Carlos Camps Soriano, Salvador Iranzo Molinero
  • Patent number: 10129052
    Abstract: Methods, systems, devices, and apparatuses are described for phase noise estimation. A transmitting device identifies a phase noise metric associated with a receiving device. The phase noise metric provides an indication of the expected phase noise for the receiving device. The transmitting device selects a plurality of pilot tones adjacent to each other and a plurality of null tones for a transmission to the receiving device based on the phase noise metric. The plurality of null tones may be adjacent to and on both sides of the pilot tones in the frequency domain. The transmitting device identifies its own phase noise metric and select the pilot tones adjacent to each other and plurality of null tones in further consideration of its own phase noise metric. The receiving device may use the pilot tones and plurality of adjacent null tones to determine a phase noise estimation for the transmission.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: November 13, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Sundar Subramanian, Muhammad Nazmul Islam, Juergen Cezanne, Junyi Li, Krishna Kiran Mukkavilli
  • Patent number: 10122511
    Abstract: Systems and methods for automatically configuring a distributed antenna system are provided. A configuration sub-system of the distributed antenna system can identify signal parameters for downlink signals received from one or more base stations via inputs of a unit in the distributed antenna system. The configuration sub-system can automatically determine a configuration plan for the distributed antenna system based on the automatically identified signal parameters. The configuration plan specifies how to combine subsets of the downlink signals for routing to remote antenna units of the distributed antenna system.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: November 6, 2018
    Assignee: CommScope Technologies LLC
    Inventors: Van E. Hanson, Michael J. Williamson
  • Patent number: 10116369
    Abstract: A control unit of a communication device provides multicast precoding information from at least first beamforming information descriptive for a first transmission channel and second beamforming information descriptive for a second transmission channel. A precoder unit beamforms at least one signal using the multicast precoding information to obtain at least two precoded signals. A transmitter circuit which is electrically coupled to the precoder unit multicasts transmission signals through the at least first and a second transmission channels, wherein the transmission signals are derived from the precoded signals.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: October 30, 2018
    Inventors: Daniel Schneider, Andreas Schwager