Particular Pulse Demodulator Or Detector Patents (Class 375/340)
  • Patent number: 10389473
    Abstract: A disclosed method for extending reach in an adaptive optical network may include selecting, for an optical channel having a given target distance and a given maximum data rate, the modulation format having the highest spectral efficiency among modulation formats supported in the adaptive optical network that are suitable for optical channels having the given target distance and the given maximum data rate, determining a symbol rate for the optical channel dependent on characteristics of transmission media for the optical channel, determining a number of subcarriers for the optical channel corresponding to the determined symbol rate, and activating subcarrier multiplexing (SCM) for the optical channel. Activating SCM may include configuring transponders to transmit or receive the traffic in the optical channel using the selected modulation format and the determined number of subcarriers. The method may be implemented by a network management system of the optical network.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: August 20, 2019
    Assignee: Fujitsu Limited
    Inventors: Olga I. Vassilieva, Inwoong Kim, Tadashi Ikeuchi
  • Patent number: 10390305
    Abstract: Methods, systems, and devices for wireless communication in a user equipment (UE) are described in which a cycle duration of an extended discontinuous reception (eDRX) cycle is determined. The UE enters a sleep state of the eDRX cycle and, based on the determination of the cycle duration, uses a first clock as a timer during the sleep state and uses a second clock as a timing calibrator during the sleep state. The first clock may have a lower power consumption and a higher frequency error, and the second clock may have a higher power consumption and a lower frequency error.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: August 20, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: James Francis Geekie, Suyash Ranjan, Xu Chi
  • Patent number: 10389453
    Abstract: The present invention concerns a system for controlling gain when time-sharing a tuner in a frequency diversity receiver. Two radio-frequency automatic gain control (RFAGC) filter capacitors are used, each capacitor corresponding to one of the currently utilized frequencies in the frequency diversity scheme. The capacitors are switched in tandem with the tuner frequency selection. This allows the capacitor associated with a tuned frequency to retain the RFAGC voltage until the tuner returns to that frequency.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: August 20, 2019
    Assignee: INTERDIGITAL MADISON PATENT HOLDINGS
    Inventor: Mark Francis Rumreich
  • Patent number: 10382598
    Abstract: A first format according to which a PHY data unit is to be generated is selected. The data unit is generated according to the first format, including generating a PHY preamble of the PHY data unit to include a first field and a second field. The PHY preamble is generated so that one or more OFDM symbols are rotated by 90 degrees with respect to other OFDM symbols in the PHY preamble to signal the first format. Or, the first field is generated to include a set of bits that according to an error detection scheme that does not conform to a second format; or the set of information bits indicates a mode not supported in connection with the second format. Or, a duplicate of at least one of the first field and the second field is included in the PHY preamble, to signal the first format.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: August 13, 2019
    Assignee: Marvell International Ltd.
    Inventors: Hongyuan Zhang, Yakun Sun, Lei Wang
  • Patent number: 10382236
    Abstract: The present invention is directed to data communication. In a specific embodiment, a known data segment is received through a data communication link. The received data is equalized by an equalizer using an adjustable equalization parameter. The output of the equalizer is sampled, and a waveform is obtained by sweeping one or more sampler parameters. The waveform is evaluated by comparing it to the known data segment. Based on the quality of the waveform, equalizer parameter is determined. There are other embodiments as well.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: August 13, 2019
    Assignee: INPHI CORPORATION
    Inventors: Richard Ward, Parmanand Mishra
  • Patent number: 10348388
    Abstract: In this work, we present a novel receiving device design for communications systems that incorporates multiple antennas at the transmitting device/receiving device. Unlike existing systems, the new system does not require prior knowledge of the channel state information (CSI) at the receiving device side to extract the information symbols from the received signal. Consequently, complexity reduction and bit error rate improvement can be jointly achieved. Moreover, the new system may offer spectral efficiency enhancement since it does not require nulling to prevent the pilot symbols as in the case of conventional systems. The results obtained show that in certain scenarios the proposed system can offer up to 15 dB of bit error rate improvement over conventional systems. Moreover, the new system can provide about 16.6% of the spectral efficiency improvement.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: July 9, 2019
    Assignee: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventor: Arafat Al-Dweik
  • Patent number: 10318309
    Abstract: An embedded system has a data processing apparatus that executes program code and a sequencing controller for switching components of the embedded system on and off, the data processing apparatus and the sequencing controller connected to one another via an individual control signal line, and the sequencing controller arranged to either switch off or restart the embedded system on the basis of a temporal profile of a control signal received via the control signal line.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: June 11, 2019
    Assignee: Fujitsu Technology Solutions Intellectual Property GmbH
    Inventor: Timo Bruderek
  • Patent number: 10320499
    Abstract: In some applications network parameters vary over time in a manner that precludes the use of conventional swept frequency network analyzers. Swept measurements incur penalty both in terms of acquisition time, and in terms of registration between measurements taken at the beginning and at the end of a sweep. Disclosed is an architecture and method for real-time analysis of network parameters. Example applications are presented, ranging from thermal drift of amplifiers, to microwave imaging of moving objects, to characterizing materials on conveyors, to characterizing plasma buildup, and many more.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: June 11, 2019
    Assignee: VAYYAR IMAGING LTD.
    Inventor: Yuval Lomnitz
  • Patent number: 10313170
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention relates to the transmission and the reception of filter bank multi-carrier (FBMC) symbols in a wireless communication system, a method for operating a transmitting end comprises the step of: generating a first symbol in which sample values of a front end are shifted to a rear end; generating a second symbol in which sample values of a rear end are shifted to a front end; and transmitting a plurality of symbols comprising the first symbol and the second symbol on a time axis in an overlapping manner.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: June 4, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeohun Yun, Sooyong Choi, Moonchang Choi, Seongbae Han, Hyung-Ju Nam, Sang-Joon Park
  • Patent number: 10306483
    Abstract: An embodiment method for measurement gap scheduling includes generating, by a serving cell to which a UE is connected, a bitmap that indicates timing of measurement gaps for reference signals transmitted by the serving cell and at least one neighbor cell of the serving cell in beamformed and beam swept beams, and transmitting the bitmap to the UE in a configuration message.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: May 28, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Nathan Edward Tenny, David Lecompte
  • Patent number: 10306618
    Abstract: The disclosure of the present specification provides a method for receiving a downlink control channel, which is repeated on a plurality of downlink subframes, by a wireless device in a wireless communication system. The method may comprise the steps of: attempting, by the wireless device, blind decoding of the downlink control channel, using one or more of multiple scrambling codes; when the blind decoding is successful, determining, by the wireless device, a repetition level for the downlink control channel on the basis of a scrambling code by which the wireless device has been successful in the blind decoding; and determining, by the wireless device, the number of repetitions of the downlink control channel according to the repetition level.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: May 28, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyangsun You, Hanbyul Seo, Yunjung Yi, Daesung Hwang
  • Patent number: 10306486
    Abstract: A method of and apparatus removing of a plurality of relatively narrow banded signals in a relatively wide banded input signal. The method involves and the apparatus provides for compressively sensing one relatively narrow banded signal in the relatively wide banded input signal and removing one relatively narrow banded signal from the relatively wide banded input signal before detecting and removing another relatively narrow banded signal in the relatively wide banded input signal, the step of and apparatus for compressing sensing occurring with respect to both (i) the input signal with the previously detected narrow banded signals removed therefrom and (ii) a frequency shifted version of (i).
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: May 28, 2019
    Assignee: HRL Laboratories, LLc
    Inventors: Cathy (Xiangming) Kong, Kang-Yu Ni
  • Patent number: 10291437
    Abstract: Embodiments described herein include methods and systems for measuring channel impulse responses in a digital communication system. Specifically, statistical properties of the received signals at the receiver of the digital communication system are analyzed to compute, in real time, channel coefficients indicative of the channel state information, which may be time-dependent, without the use of a training signal.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: May 14, 2019
    Assignee: Marvell International Ltd.
    Inventors: Davide Visani, Luca Vercesi, Fernando De Bernardinis
  • Patent number: 10291340
    Abstract: A repeater including an analog attenuator configured to attenuate an analog signal in response to a first control signal; an analog to digital converter (ADC) configured to convert the attenuated analog signal into a digital signal; a digital attenuator configured to attenuate the digital signal in response to a second control signal; and an attenuation controller configured to calculate average power and peak power of the attenuated digital signal, determine an attenuation value for each value of the calculated average power and peak power, and generate at least one of the first and second control signals based on the determined attenuation values.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: May 14, 2019
    Assignee: SOLiD, INC.
    Inventors: Nagwon Kwon, Hyunchae Kim
  • Patent number: 10284286
    Abstract: A multiuser communication system comprises multiple transmitters and a multiuser receiver that detects multiple transmissions via iterative soft interference cancellation. An initial acquisition module and single user decoder module are also described. The multiuser receiver acquires and subtracts known users in the residual signal before acquiring new users in the residual signal, which is performed iteratively until no new users are detected or a stopping criterion is met. To aid receiver acquisition, the transmitters insert discrete tones into the transmitted signals. These allow the multiuser receiver to obtain initial estimates of the frequency, time, gain, and/or phase offset for each user. To improve the quality of cancellation the receiver refines estimates of gain, time, frequency and phase offsets for each user after each iteration, and calculates time varying SINR estimates for each user. The multiuser receiver may be satellite based, may be a distributed receiver, or process users in parallel.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: May 7, 2019
    Assignee: Myriota Pty Ltd
    Inventors: Alexander James Grant, Gottfried Lechner, Andre Pollok, Robert George McKilliam, Ingmar Rudiger Land, David Victor Lawrie Haley, William George Cowley, Linda Mary Davis, Sorin Adrian Barbulescu, John Lawrence Buetefuer, Marc Pierre Denis Lavenant
  • Patent number: 10284236
    Abstract: A radio frequency (RF) device includes a plurality of mixers, each of the plurality of mixers having a first input terminal, a second input terminal, and an output terminal; and a self-test circuit.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: May 7, 2019
    Assignee: INFINEON TECHNOLOGIES AG
    Inventor: Saverio Trotta
  • Patent number: 10267936
    Abstract: Estimating an earth response can include deconvolving a multi-dimensional source wavefield from near-continuously recorded seismic data recorded at a receiver position. The deconvolving can include spreading the near-continuously recorded seismic data across a plurality of possible source emission angles. The result of the deconvolution can be the earth response estimate.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: April 23, 2019
    Assignee: PGS Geophysical AS
    Inventors: Tilman Kluver, Stian Hegna
  • Patent number: 10263715
    Abstract: A post-cursor compensation system includes a state detector that receives a signal on a data line to detect a predefined state, and accordingly generates a clear control signal; a synchronization detector that receives the signal on the data line and the clear control signal to detect at least one synchronization state, and accordingly generates a trigger signal; and a compensation generator that receives the trigger signal and accordingly generates a compensation signal.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: April 16, 2019
    Assignee: M31 Technology Corporation
    Inventor: Shuo-Ting Kao
  • Patent number: 10263754
    Abstract: The disclosure provides for an apparatus for wireless communications using carrier aggregation comprised of multiple carrier components. The apparatus can include a processor configured to generate one or more instances of a codeword from a data payload. In an aspect, the apparatus also includes a modulator configured to modulate the one or more instances of the codeword onto the multiple carrier components for transmission. In an aspect, the apparatus also includes a resource manager configured to provide the processor with a virtual carrier space comprising a logical carrier having a contiguous bandwidth equivalent to the aggregated bandwidth of the multiple carrier components. In an aspect, the process may be further configured to interleave at least one of the codeword instances across the multiple carrier components. In an aspect, the modulator may be configured to modulate the codeword instance onto the multiple carrier components in accordance to the interleaving.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: April 16, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Jamie Menjay Lin, Jing Jiang, Tingfang Ji, Kambiz Azarian Yazdi, Joseph Binamira Soriaga
  • Patent number: 10263723
    Abstract: Processing a received optical signal in an optical communication network includes equalizing a received optical signal to provide an equalized signal, demodulating the equalized signal according to an m-ary modulation format to provide a demodulated signal, decoding the demodulated signal according to an inner code to provide an inner-decoded signal, and decoding the inner-decoded signal according to an outer code. Other aspects include other features such as equalizing an optical channel including storing channel characteristics for the optical channel associated with a client, loading the stored channel characteristics during a waiting period between bursts on the channel, and equalizing a received burst from the client using the loaded channel characteristics.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: April 16, 2019
    Inventors: Alexander Soto, Walter Soto
  • Patent number: 10257742
    Abstract: Embodiments herein describe control logic for seamlessly switching client devices between radios co-located on the same network device or between radios located on different network devices that have overlapping coverage areas. In one embodiment, the radios are assigned different channels in the same frequency band. To move the client devices between the radios, one of the radios transmits a Channel Switch Announcement (CSA) which instructs the client devices serviced by a first radio to switch to a channel assigned to a second, different radio. For example, the CSA may be used when the first radio fails, is upgraded, performs a Channel Availability Check (CAC), is overloaded, and the like. After the CSA is transmitted, the second radio spoofs the service identifier of the first radio so to the perspective of the client devices, they are still communicating with the first radio.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: April 9, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Pooya Monajemi, Vishal S. Desai, Young Il Choi, Tak Ming F. Pang
  • Patent number: 10243770
    Abstract: A method and an apparatus for receiving broadcast signals thereof are disclosed. The apparatus for receiving broadcast signals, the apparatus comprises a receiver to receive the broadcast signals, a demodulator to demodulate the received broadcast signals by an OFDM (Orthogonal Frequency Division Multiplex) scheme, a frame parser to parse a signal frame from the demodulated broadcast signals, a time deinterleaver to time deinterleave data in the parsed signal frame and a decoder to decode the time deinterleaved data.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: March 26, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Jongseob Baek, Woosuk Ko, Seoyoung Back, Sungryong Hong
  • Patent number: 10237029
    Abstract: A transmitter transmitting payload data using OFDM symbols includes a frame builder configured to receive the payload data, receive signalling data for use in detecting and recovering the payload data at a receiver, and form the payload data with the signalling data into transmission frames. A modulator is configured to modulate a first OFDM symbol with the signalling data forming a part of each of the frames and to modulate one or more second OFDM symbols with the payload data to form each of the frames. The transmitter combines a signature sequence with the first OFDM symbol, so that the first OFDM symbol can be detected within the frame before the second OFDM symbol. The transmitter includes a pilot signal inserter configured to insert a number of pilot symbols on selected sub-carriers of the first OFDM symbol sufficient to estimate a coarse frequency offset of the transmitted OFDM symbol.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: March 19, 2019
    Assignee: SATURN LICENSING LLC
    Inventor: Samuel Asangbeng Atungsiri
  • Patent number: 10237108
    Abstract: A method for receiving broadcast signals, includes receiving the broadcast signals, demodulating the received broadcast signals by an Orthogonal Frequency Division Multiplex (OFDM) scheme, parsing a signal frame from the demodulated broadcast signals, and bit deinterleaving data in the parsed signal frame, wherein the bit deinterleaving includes block deinterleaving the data with each set of a number of bit groups. The number of bit groups is based on modulation type. When the modulation type is Quadrature Phase Shift Keying (QPSK), the number of bit groups is 2. When the modulation type is 16 Quadrature Amplitude Modulation (QAM), the number of bit groups is 4. When the modulation type is 64 Quadrature Amplitude Modulation (QAM), the number of bit groups is 6. When the modulation type is 256 QAM, the number of bit groups is 8. When the modulation type is 1024 QAM, the number of bit groups is 10.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: March 19, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Yonghak Suh, Sangchul Moon, Jongwoong Shin, Woosuk Ko, Sungryong Hong
  • Patent number: 10230408
    Abstract: A transmitter includes a power amplifier coupled to amplify an input signal and provide an output signal. A radio frequency coupler is coupled to receive the output signal and provide a measured signal on a coupler output. A measurement receiver multiplexor is coupled to receive the measured signal on the coupler output to produce either a non-phase adjusted signal or a phase adjusted signal on one of a plurality of multiplexor outputs. Multiple receiver paths are coupled to the plurality of multiplexor outputs to receive either the non-phase adjusted signal or the phase adjusted signal. Receive path processing circuitry is configured to produce in-phase and quadrature phase digital signals based on the plurality of multiplexor outputs to digital processing circuitry to cancel 3rd or 3rd and 5th order measurement receiver distortions.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: March 12, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Wael Al-Qaq, Hong Jiang
  • Patent number: 10230437
    Abstract: It is possible to secure radio resources allocated to an uplink data channel even when radio resources allocated to an uplink control channel increase. A user terminal according to the present invention includes: a control section that maps an uplink data channel and an uplink control channel on different layers; and a transmission section that multiplexes on an identical radio resource the uplink data channel and the uplink control channel mapped on the different layers to transmit.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: March 12, 2019
    Assignee: NTT DOCOMO, INC.
    Inventors: Kazuki Takeda, Hiroki Harada, Satoshi Nagata
  • Patent number: 10231228
    Abstract: A method of two-stage scheduling in downlink control channel is proposed to enhance downlink control information (DCI) forward compatibility and hardware flexibility. The DCI comprises a basic DCI and an extended DCI. The basic DCI provides basic scheduling information of the scheduled data. The extended DCI provides extended scheduling information of the scheduled data channel. The basic DCI can be unicast to a single UE over UE-specific search space. The basic DCI can also be broadcast or multicast to a group of UEs over common search space. UE performs blind detection of the basic DCI only, while the location and size of the extended DCI can be provided by the basic DCI or provided by a higher layer signaling. Cross-slot/subframe and Multi-slot/subframe scheduling can also be applied in the two-stage scheduling.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: March 12, 2019
    Assignee: MEDIATEK INC.
    Inventors: Pei-Kai Liao, Yi-Ju Liao
  • Patent number: 10218442
    Abstract: Embodiments of the invention provide a Space-Time coding device for encoding a digital data sequence according to a predefined space-time coding rate, said data sequence comprising a set of modulated symbols to be transmitted over at least two propagation modes, during a number of time slots, through an optical transmission channel in a single-core multimode optical fiber transmission system, wherein the device comprises: a codebook generator (53) configured to determine a set of codeword matrices defining a space-time code represented by a space dimension and a temporal dimension, each codeword matrix comprising complex values and a number of columns equal to said code temporal dimension, and a number of rows equal to said code space dimension, the codebook generator (53) being further configured to associate a difference codeword matrix and a distance metric to each pair of codeword matrices among said set of codeword matrices, each component of a difference codeword matrix associated with a given pair o
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: February 26, 2019
    Assignee: INSTITUT MINES-TELECOM
    Inventors: El-Mehdi Amhoud, Ghaya Rekaya Ben-Othman, Yves Jaouen
  • Patent number: 10212096
    Abstract: A method, reception device and host device are provided for aligning data streams at a multi-source receiver. Portions of data for a plurality of data streams are received at a reception device, the plurality of data streams carrying respective content, wherein the content of each data stream is misaligned with at least one other data stream with respect to time. The portions of data are forwarded to a host device to be stored in respective delay buffers. Indexing information is maintained for each of the delay buffers. The portions of data are forwarded to the host device along with the indexing information.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: February 19, 2019
    Assignee: NXP B.V.
    Inventors: Sebastian Bohn, Matthias Schattka
  • Patent number: 10200803
    Abstract: Embodiments of wireless audio systems and methods for synchronizing wireless headphones are disclosed herein. In one example, a wireless audio system includes an audio source, a first wireless headphone, and a second wireless headphone. The audio source is configured to separately transmit a left-channel audio signal and a right-channel audio signal using a short-range wireless communication protocol. The first wireless headphone is configured to receive the left-channel audio signal and synchronize a first clock of the first wireless headphone with the audio source based on the left-channel audio signal. The second wireless headphone is configured to receive the right-channel audio signal and synchronize a second clock of the second wireless headphone with the audio source based on the right-channel audio signal, so that the first clock of the first wireless headphone is synchronized with the second clock of the second wireless headphone.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: February 5, 2019
    Assignee: BESTECHNIC (SHANGHAI) CO., LTD.
    Inventors: Weifeng Tong, Dongsheng Cui, Hua Zeng, Yulong Wang
  • Patent number: 10200977
    Abstract: Aspects of the present disclosure provided techniques that for wireless communications by a user equipment (UE). An exemplary method, performed by a UE, generally includes determining one or more locations for receiving system information for machine type communication (MTC) over a bundled transmission and decoding the system information received at the locations over the bundled transmission.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: February 5, 2019
    Assignee: Qualcomm Incorporated
    Inventors: Hao Xu, Seyed Ali Akbar Fakoorian, Peter Gaal, Wanshi Chen, Madhavan Srinivasan Vajapeyam
  • Patent number: 10200754
    Abstract: Methods and apparatus are disclosed for media monitoring and audience measurement. For example, an optical capture meter can capture data of an optical pulse stream detected from a media remote control. A key code detector can determine a key code, based on a query optical pulse signature including a query symbol alphabet. The key code corresponds to the key activated on the media remote control to control a media activity (e.g., changing television channels.) The foregoing can provide a generalized way of key code detection of media remote controls from various different manufacturers without complete prior knowledge and/or implementations of various different infrared signaling protocols employed in various media remote controls.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: February 5, 2019
    Assignee: The Nielsen Company (US), LLC
    Inventor: Matja{hacek over (z)} Finc
  • Patent number: 10193593
    Abstract: A transfer function calculation unit (522) calculates a diagonal matrix G(f) on the basis of a band limit condition g(t) used in a transmission device (20). A transfer function calculation unit (524) calculates a diagonal matrix C(f) on the basis of a wavelength dispersion amount c(t) incurred in an optical transmission path. A transfer function combination unit (526) combines the diagonal matrix G(f) with the diagonal matrix C(f) so as to calculate a diagonal matrix H(f)=G(f)×C(f). An equalization coefficient calculation unit (528) calculates an equalization coefficient matrix W(f)=H(f)H(H(f)HH(f)+(1/Es)×??)?1 used in a multiplication unit (506) by using the diagonal matrix H(f). Here, H(f)H is a Hermitian transposed matrix of a matrix H(f), Es is power of an optical signal, and ?? is a diagonal matrix with N rows and N columns.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: January 29, 2019
    Assignee: NEC CORPORATION
    Inventors: Wakako Yasuda, Kazunori Hayashi
  • Patent number: 10187237
    Abstract: An apparatus and method for broadcast signal frame using layered division multiplexing are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling, type information of Physical Layer Pipes (PLPs) and time interleaver information shared by the core layer signal and the enhanced layer signal.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: January 22, 2019
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae-Young Lee, Sung-Ik Park, Sun-Hyoung Kwon, Heung-Mook Kim
  • Patent number: 10182400
    Abstract: Systems and methods are described for a wireless electronic device including a primary wireless transceiver and a secondary wireless transceiver. An electronic processor is configured to operate the wireless device and communicate through the primary wireless transceiver when in an active mode and to monitor the secondary wireless receiver for a wake-up signal when in a sleep mode. The electronic processor transitions from the sleep mode into the active mode in response to detecting the wake-up signal through the secondary wireless receiver.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: January 15, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Alex Khazanov, Othmane Bennis, Brian Vorees
  • Patent number: 10181967
    Abstract: Methods and apparatus for soft MIMO detection of high order QAM with initial candidate reduction are described. A method includes receiving a plurality of signals including Q-order quadrature amplitude modulation (QAM) symbols; determining, based on linear minimum mean square error (MMSE) estimation using detection of I and Q signs around a target layer, a reduced candidate set including C potential candidates, where C is less than Q; calculating Euclidean distances (EDs) based on the reduced candidate set; and generating log-likelihood ratio (LLR) information based on the calculated EDs.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: January 15, 2019
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Mojtaba Rahmati, Dongwoon Bai, Jungwon Lee
  • Patent number: 10178576
    Abstract: Various communication systems may benefit from the appropriate logging of measurements. For example, communication systems employing multimedia broadcast multicast service may benefit from logging multicast-broadcast single-frequency network measurements. A method can include logging, by a user equipment, a multicast-broadcast single-frequency network measurement corresponding to a logging period. The method can also include storing, at the time the multicast-broadcast single-frequency network measurement is made, cell measurement results.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: January 8, 2019
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Ilkka Antero Keskitalo, Jorma Johannes Kaikkonen, Lars Dalsgaard
  • Patent number: 10171120
    Abstract: An apparatus for suppressing an intermodulation distortion component in a reception signal executes acquisition to acquire a plurality of transmission signals transmitted at frequencies different from each other, executes reception to receive a reception signal including an intermodulation distortion component caused by the plurality of transmission signals, executes generation to generate a replica of the intermodulation distortion component according to the plurality of transmission signals, executes normalization to normalize the reception signal so that the reception signal has certain amplitude, executes calculation to calculate a correlation value between the normalized reception signal and the replica, executes adjustment to adjust delay in the replica relative to the reception signal according to the correlation value, and executes combination to combine the replica for which the delay is adjusted with the reception signal.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: January 1, 2019
    Assignee: FUJITSU LIMITED
    Inventor: Mitsuharu Hamano
  • Patent number: 10148390
    Abstract: Techniques herein support enhanced multi-rate encoding and decoding of signals in multiple formats. In one embodiment, input data is received at a first device at one of a plurality of data rates. Encoder units are activated to produce streams of encoded input data. The encoder units are configured to operate at the same data rate. Differential encoding operations are performed to produce an encoded output stream. The encoded output stream is modulated for transmission to a second device. In another embodiment, a first device receives an encoded data stream that is transmitted from a second device. The modulated data stream includes encoded data at one of a plurality of data rates. Differential decoding is performed on the encoded data by activating one or more of a plurality of decoder units, where each of the plurality of decoder units is configured to operate at the same rate.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: December 4, 2018
    Assignee: Cisco Technology, Inc.
    Inventor: Andreas Bisplinghoff
  • Patent number: 10133297
    Abstract: A method for transmitting a plurality of data bits and a clock signal on a return to zero (RZ) signal includes: transmitting a first voltage that is greater than a first threshold, the first voltage being decodable to first order of data bits; transmitting a second voltage that is between a second threshold and the first threshold, the second voltage being decodable to a second order of data bits; transmitting a third voltage that is between a third threshold and a fourth threshold, the third voltage being decodable to a third order of data bits; transmitting a fourth voltage that is greater in magnitude than the fourth threshold, the fourth voltage being decodable to a fourth order of data bits; and transitioning the clock signal in response to the RZ signal being between the second threshold and the third threshold.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: November 20, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Robert Floyd Payne
  • Patent number: 10135657
    Abstract: A broadcast signal receiver is disclosed. A broadcast signal receiver according to an embodiment of the present invention comprises a synchronization & demodulation module performing signal detection and OFDM demodulation on a received broadcast signal; a frame parsing & deinterleaving module performing parsing and deinterleaving of a signal frame of the broadcast signal; a demapping & decoding module performing conversion of data of at least one Physical Layer Pipe (PLP) of the broadcast signal into the bit domain and FEC decoding of the converted PLP data; and an output processing module outputting a data stream by receiving the at least one PLP data.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: November 20, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jongseob Baek, Woosuk Ko, Sungryong Hong
  • Patent number: 10116468
    Abstract: Methods and systems are described for receiving symbols of a codeword via wires of a multi-wire bus, the codeword representing an aggregate sum of a plurality of sub-channel constituent codewords, each sub-channel constituent codeword representing a weight applied to an associated sub-channel vector of a plurality of sub-channel vectors of an orthogonal matrix, generating a plurality of comparator outputs using a plurality of common-mode resistant multi-input comparators (MICs), each common-mode resistant MIC having a set of input coefficients representing a corresponding sub-channel vector of the plurality of sub-channel vectors, each sub-channel vector (i) mutually orthogonal and (ii) orthogonal to a common-mode sub-channel vector, outputting a set of forward-channel output bits formed based on the plurality of comparator outputs, obtaining a sequence of reverse-channel bits, and transmitting the sequence of reverse-channel bits by sequentially transmitting common-mode codewords over the wires of the multi-
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: October 30, 2018
    Assignee: KANDOU LABS, S.A.
    Inventor: Ali Hormati
  • Patent number: 10111193
    Abstract: A non-transitory computer-readable storage medium stores a program that causes a computer to execute a process. The process includes receiving radio signals from base stations, the radio signals being generated by the base stations based on a modulated signal received at the base stations; determining one or more reception target signals in the received radio signals, the reception target signals having a predetermined target frequency and being modulated according to a predetermined target modulation scheme; aligning the reception target signals with each other; generating a demodulation target signal based on the aligned reception target signals; and demodulating the generated demodulation target signal.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: October 23, 2018
    Assignee: FUJITSU LIMITED
    Inventor: Taki Kono
  • Patent number: 10110215
    Abstract: Provided is a comparator configured to compare input voltages, which are input to a first dynamic comparator and a second dynamic comparator, with a reference voltage, select either an output signal of the first dynamic comparator or an output signal of the second dynamic comparator based on the comparison result, output the selected output signal, and control clock signals, which are input to the first dynamic comparator and the second dynamic comparator respectively, based on the comparison result, so as to stop the operation of the dynamic comparator of which output signal is not selected.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: October 23, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hideki Shimauchi, Kanji Kitamura, Mutsuo Daito, Akio Kamimurai, Masatoshi Uchino, Yoshinori Tatenuma, Akira Koshimizu
  • Patent number: 10097382
    Abstract: A receiver for a modulated signal of a communication system is disclosed. The receiver includes a demodulator to demodulate the received modulated symbols of a received signal into received soft-bits. The receiver also includes a hard-decision decoder that is configured to decode the received soft-bits into decoded bits. A feedback loop is included to provide feedback from the hard decision decoder to the demodulator. The feedback loop is configured to re-encode the decoded bits from the hard-decision decoder into re-encoded bits. The demodulator is further configured to iteratively demodulate the received modulated signal using an output of the feedback loop.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: October 9, 2018
    Assignee: NXP B.V.
    Inventors: Semih Serbetli, Nur Engin, Alessio Filippi
  • Patent number: 10085266
    Abstract: According to aspects of the present disclosure, a method and system are provided for wireless communication between a user equipment device (UE) and a base station using carrier aggregation and transmission time internal (TTI) bundling. The base station serves the UE with carrier aggregation on multiple carriers and determines, per carrier, a respective bundling size for transmitting a wireless communication between the UE and the base station with transmission TTI bundling on that component carrier. The determined bundling size for at least one of the plurality of component carriers is different than the determined bundling size for another one of the plurality of component carriers. While serving the UE with carrier aggregation on the multiple carriers, the base station invokes TTI bundling to transmit the wireless communication between the UE and the base station on each carrier with the respectively determined bundling size for that component carrier.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: September 25, 2018
    Assignee: Sprint Spectrum L.P.
    Inventors: Hemanth B. Pawar, Shilpa Kowdley Srinivas, Krishna Sitaram, Chunmei Liu
  • Patent number: 10056960
    Abstract: For example, a wireless station may be configured to modulate a plurality of data bit sequences into a plurality of data blocks in a frequency domain according to a dual carrier modulation, a data bit sequence of the plurality of data bit sequences to be modulated into first and second consecutive symbols in a data block of the plurality of data blocks; to map the plurality of data blocks to a plurality of spatial streams by mapping the first symbol to a first data subcarrier in a first sub-band of a signal band in a first spatial stream of the plurality of spatial streams, and mapping the second symbol to a second data subcarrier in a second sub-band of the signal band in a second spatial stream of the plurality of spatial streams; and to transmit a Multi-In-Multi-Out (MIMO) transmission based on the plurality of spatial streams.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: August 21, 2018
    Assignee: INTEL CORPORATION
    Inventors: Artyom Lomayev, Alexander Maltsev, Michael Genossar, Carlos Cordeiro
  • Patent number: 10057828
    Abstract: Methods and apparatuses for communicating in a wireless network include a signal processor for combining a plurality of signals transmitted by respective eNBs by processing the signals as multipath instances of a single signal. Embodiments include utilizing multi-point transmissions; multiple transmission time intervals; and transmission time interval bundling/repetition. Other embodiments are also disclosed.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: August 21, 2018
    Assignee: INTEL IP CORPORATION
    Inventors: Seunghee Han, Gi Wan Choi, Hwan-Joon Kwon, Apostolos Papathanassiou, Jong-Kae Fwu
  • Patent number: 10050730
    Abstract: A transmitting apparatus is provided.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: August 14, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-hyeon Bae, Young-ho Oh, Sung-hee Hwang
  • Patent number: 10038489
    Abstract: Systems and methods for adaptive demodulation of cellular device communications signals are provided. Cellular communications over a Long Term Evolution network can involve determining a demodulations scheme based on a service cell transmission mode, an interfering cell transmission mode, a modulation order (QAM) of interferer and an interference-to-noise ratio of cellular communications signals.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: July 31, 2018
    Assignee: Ceva D.S.P. Ltd.
    Inventors: Gideon Kutz, Hagay Rozin, Zeev Kaplan, Jeffrey Allan (Alon) Jacob (Yaakov)