End-to-end Transmission System Patents (Class 375/141)
  • Patent number: 10797830
    Abstract: An apparatus and method for multiplexing signals using layered division multiplexing are disclosed. A signal multiplexing apparatus according to an embodiment of the present invention includes a combiner configured to combine a core layer signal and an enhanced layer signal at different power levels to generate a multiplexed signal, a power normalizer configured to reduce power of the multiplexed signal to power corresponding to the core layer signal, and a time interleaver configured to perform interleaving applied to both the core layer signal and the enhanced layer signal.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: October 6, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Nam-Ho Hur, Sun-Hyoung Kwon, Sung-Ik Park, Heung-Mook Kim, Jae-Young Lee
  • Patent number: 10791556
    Abstract: Techniques are described for wireless communication. A first method includes winning a contention for access to an unlicensed radio frequency spectrum band, and transmitting at least a portion of a channel usage beacon signal (CUBS) over the unlicensed radio frequency spectrum band. The at least portion of the CUBS is transmitted in a number of frequency interlaces of the unlicensed radio frequency spectrum band. A second method includes winning a contention for access to an unlicensed radio frequency spectrum band; determining whether the contention is won within a threshold time before a next symbol period boundary; and transmitting at least a portion of a CUBS over the unlicensed radio frequency spectrum band. The at least portion of the CUBS is transmitted during a preamble including a fractional period of a first symbol period. The at least portion of the CUBS may be based at least in part on the determining.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: September 29, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Peter Gaal, Srinivas Yerramalli, Durga Prasad Malladi, Naga Bhushan, Yongbin Wei, Tao Luo, Hao Xu, Wanshi Chen, Shimman Arvind Patel, Aleksandar Damnjanovic, Xiaoxia Zhang
  • Patent number: 10785015
    Abstract: Methods, systems, and apparatus for EM communications. One of the apparatus includes a plurality of receive samplers arranged in parallel and configured to receive an amplitude modulated input signal, each sampler being clocked at a same rate but not a same phase, the rate being in relation with the input signal; a plurality of envelope extractors, wherein each envelop extractor is communicatively coupled to a respective output of one of the plurality of receive samplers, and wherein each envelope extractor is configured to extract the envelope of the input signal after sampling; and a combiner communicatively coupled to the envelope extractors to combine the signal envelopes sampled at their respective phases, creating a combined output that provides an approximate copy of the input signal envelope, providing an output signal for performing symbol synchronization.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: September 22, 2020
    Assignee: Keyssa Systems, Inc.
    Inventor: Patrick Antoine Rada
  • Patent number: 10749718
    Abstract: This invention relates system for classifying a modulation format of a communication signal. The system includes a receiving antenna system, to receive the communication signal, a preprocessing module, to evaluate a Fourier transform of a plurality of samples of the received communication signal, normalize each discrete sample of the Fourier transform, quantize each normalized sample based on a number of quantization levels (Q), a graphical analyzer to construct a undirected graph by tracing amplitude of the each quantized sample; and a classification module to extract one or more modulation classification (MC) features from the undirected graph; and to determine the modulation format of the received communication signal based on the extracted MC features.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: August 18, 2020
    Assignee: Allen-Vanguard Corporation
    Inventors: Yahia A. Eldemerdash, Octavia A. Dobre, Oktay Ureten, Trevor Noel Yensen
  • Patent number: 10749810
    Abstract: A network device such as a router or switch, in one embodiment, includes a timing analyzer which is capable of providing timing analysis over one or more network circuits. The timing analyzer, in one aspect, receives a data packet traveling across a circuit emulation service (“CES”) circuit such as T1 or E1 circuit. Upon obtaining an arrival timestamp associated with the data packet, the arrival timestamp is stored in a timestamp buffer in accordance with a first-in first-out (“FIFO”) storage sequence. After identifying the oldest arrival timestamp in the timestamp buffer, an offset is generated based on the result of comparison between the arrival timestamp and the oldest timestamp. The timing analyzer can also be configured to generate timing reports on-demand based on generated offset(s).
    Type: Grant
    Filed: December 22, 2018
    Date of Patent: August 18, 2020
    Assignee: Tellabs Operations, Inc.
    Inventors: Anthony Leonard Sasak, Christopher V. O'Brien
  • Patent number: 10715891
    Abstract: An auto-provision method, system and computer programs for FTTH backhaul, midhaul or fronthaul for mobile base stations based on SDN. The method comprises detecting, by OLT when an ONU is connected to an optical termination point and responsive to said detection said OLT notifying a SDN controller. The SDN controller then provides connectivity to a base station connected to the ONU to a first restricted network providing access to a web site with limited connectivity. Then, said web site receives credential information identifying a technician of the base station and, once the technician is connected therein, further receives configuration information specifying which FTTH services the base station requires subscription. The SDN controller then disconnects the base station from the web site and reconnects it to a second network configured to provide access to a core network and to the subscribed FTTH services to the base station.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: July 14, 2020
    Assignee: TELEFONICA DIGITAL ESPAÑA, S.L.U.
    Inventors: María Luisa García Osma, Alfonso Aurelio Carrillo Aspiazu, Daniel Velasco Benito
  • Patent number: 10707913
    Abstract: A radio frequency system. In some embodiments, the system includes a one-bit receiver, and the one-bit receiver includes a digital pseudo random noise generator, a one-bit digital to analog converter, a power combiner, a one-bit analog to digital converter, and a digital subtraction circuit. The digital pseudo random noise generator produces a signal added to the received signal before analog to digital conversion. After analog to digital conversion, a delayed version of the dither is subtracted from the digital signal.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: July 7, 2020
    Assignee: Raytheon Company
    Inventors: Harry B. Marr, Daniel Thompson, Ian S. Robinson
  • Patent number: 10693534
    Abstract: An electronic device including circuitry configured to control receiving a first reference signal or a second reference signal. The second reference signal is formed by weighting the first reference signal. The circuitry is configured to determine first transmission weight information and second transmission weight information based on reception of the first reference signal and the second reference signal. The circuitry is further configured to control transmitting of the first transmission weight information according to a first period and the second transmission weight information according to a second period, the first period being different from the second period. The second transmission weight information is determined and transmitted after the first transmission weight information is transmitted.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: June 23, 2020
    Assignee: SONY CORPORATION
    Inventor: Hiroaki Takano
  • Patent number: 10693587
    Abstract: Methods and systems are described for obtaining a plurality of information bits, and responsively partitioning the obtained plurality of information bits into a plurality of subsets of information bits, generating a plurality of streams of forward error correction (FEC)-encoded bits using a plurality of FEC encoders receiving respective subsets of the plurality of subsets of information bits, providing the plurality of streams of FEC-encoded bits to a plurality of sub-channel encoders, each sub-channel encoder receiving a respective stream of FEC-encoded bits from a different FEC encoder of the plurality of FEC encoders for generating a set of codewords of a vector signaling code, and wherein sequential streams of FEC-encoded bits from a given FEC encoder are provided to different sub-channel encoders for each successively generated set of codewords, and transmitting the successively generated sets of codewords of the vector signaling code over a multi-wire bus.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: June 23, 2020
    Assignee: KANDOU LABS, S.A.
    Inventors: Amin Shokrollahi, Ali Hormati
  • Patent number: 10693696
    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. In a wireless communication system according to an embodiment, a signal transmission method of a transmitting apparatus includes determining a phase for each predetermined frequency band unit, applying the determined phase to a signal generated for each predetermined frequency band unit, and transmitting the signal.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: June 23, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eunyong Kim, Kwangjin Ahn, Youngkwan Choi, Hoonkyung Cho
  • Patent number: 10680755
    Abstract: Embodiments of dual mode communication systems and methods are disclosed. On system embodiment, among others, comprises logic configured to perform spatial multiplexing and expanded bandwidth signaling to data.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: June 9, 2020
    Assignee: Intellectual Ventures I LLC
    Inventors: Mark A. Webster, Michael J. Seals
  • Patent number: 10673652
    Abstract: A method for transmitting feedback includes generating explicit channel feedback for a plurality of transmit beam-receive beam combinations (TRBCs) between the user device and a transmit-receive point (TRP), generating a modified resource in accordance with explicit feedback configuration information, the modified resource configured to convey the explicit channel feedback, wherein an explicit channel feedback associated with each TRBC is conveyed on a different data symbol of the modified resource, and transmitting the modified resource to the TRP using a single TRBC.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: June 2, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Richard Stirling-Gallacher, Bin Liu, Pengfei Xia, Nathan Edward Tenny, Hongcheng Zhuang
  • Patent number: 10652889
    Abstract: A method and apparatus for wireless communication in the unlicensed spectrum between an eNB and UEs having different bandwidths, e.g., between a narrowband UE and a wideband eNB. A UE apparatus transmits uplink transmissions in a plurality of transmission units and hops frequency bands in a first pattern across frames based on a base station hopping pattern. The apparatus may transmit uplink transmissions based on dual hopping patterns, and may hop in a second pattern across transmission units within the base station's channel occupancy within a frame. A base station apparatus may hop frequency bands in a first pattern across frames based on a base station hopping pattern, and may receive uplink transmissions in a narrowband from a UE in a plurality of transmission units within the frequency bands based on the base station hopping pattern.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: May 12, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Srinivas Yerramalli, Tamer Kadous, Chih-Hao Liu, Chirag Patel, Alberto Rico Alvarino
  • Patent number: 10622951
    Abstract: Described examples provide for digital communication circuits and systems that implement digital pre-distortion (DPD). In an example, a circuit includes a baseband DPD circuit, up-conversion circuitry, and feedback circuitry. The baseband DPD circuit comprises a baseband signal path and pre-distortion path. The pre-distortion path is configured to generate a pre-distortion signal based on the baseband signal. The baseband DPD circuit includes a first adder configured to add the baseband signal from the baseband signal path and the pre-distortion signal from the pre-distortion path to generate a pre-distorted baseband signal. The up-conversion circuitry is configured to convert the pre-distorted baseband signal to a radio frequency signal. The up-conversion circuitry is configured to be coupled to an input of a cable television (CATV) amplifier.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: April 14, 2020
    Assignee: XILINX, INC.
    Inventors: Xiaohan Chen, Christopher H. Dick, Hongzhi Zhao, Hemang M. Parekh
  • Patent number: 10581722
    Abstract: Various aspects of the disclosure relate to power control for independent links. For example, power control at a device may be based on transmissions on multiple links. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, power control for the first device may be based on power control commands received on multiple links. In some scenarios, a power control constraint may be met taking into account the transmission power on multiple links.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: March 3, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Tao Luo, Juan Montojo, Tamer Kadous, Junyi Li, Xiaoxia Zhang, Jing Sun, Taesang Yoo, Siddhartha Mallik
  • Patent number: 10574277
    Abstract: The present invention teaches a system and method for improved signal recovery for range and coverage extension in a heterogeneous cooperative network of digital chaos transmissions with OFDM component signal transmission. The invention improves upon the state of art in side channel information from the transmit side containing information on the clipped amplitude. In-band transmission of the side information is achieved by exploiting the sparsity of the resulting clip amplitude position with improved levels of compression over the prior art using Gabor Transform Multiple Symbol Encoding transmitter. The information rate of the clipped amplitude is sub-Nyquist relative to the original OFDM component signal transmission, which allows very low power spreading by a cooperative digital chaos sequences at a transmit side and recovery of the clipped amplitude at a receive side. Further, an improved noise resistance side channel performance is achieved by decoding Gabor Transform symbols for symbol recovery.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: February 25, 2020
    Inventors: John David Terry, Anthony Reid
  • Patent number: 10542516
    Abstract: Embodiments describe determining position by selecting a set of digital pseudorandom sequences. The magnitudes of the cross-correlation between any two sequences of the chosen set are below a specified threshold. A subset of digital pseudorandom sequences are selected from the set such that the magnitudes of the autocorrelation function of each member of the subset, within a specified region adjacent to the peak of the autocorrelation function, are equal to or less than a prescribed value. Each transmitter transmits a positioning signal, and at least a portion of the positioning signal is modulated with at least one member of the subset. At least two transmitters of the plurality of transmitters modulate respective positioning signals with different members of the subset of digital pseudorandom sequences.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: January 21, 2020
    Assignee: NextNav, LLC
    Inventors: Arun Raghupathy, Norman F. Krasner
  • Patent number: 10536315
    Abstract: Methods, devices, and systems for transmitting information using a unique word (UW) with discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) are described herein. In an example, a wireless transmit/receive unit (WTRU) may generate a reference sequence. Further, the WTRU may generate a DMRS sequence based on upsampling of the reference sequence. In an example, the DMRS sequence may include a plurality of repeating sequences. Further, in an example, each repeating sequence may include a head sequence, a reference sequences and a tail sequence. Also, a UW sequence within the DMRS may include one of the repeated head sequences and one of the repeated tail sequences. In addition, the WTRU may generate a DMRS signal based on a waveform operation on the DMRS sequence. The WTRU may then transmit the DMRS signal as a reference signal.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 14, 2020
    Assignee: IDAC HOLDINGS, INC.
    Inventors: Erdem Bala, Alphan Sahin, Moon-il Lee, Afshin Haghighat, Ananth Kini, Mihaela C. Beluri, Rui Yang, Janet A. Stern-Berkowitz, Leonid L. Kazakevich
  • Patent number: 10523360
    Abstract: A method at a client includes monitoring a data connection to a server, adjusting a value of a channel quality indicator based on the detection of a start of a data transmission from the server, and transmitting the adjusted value of the channel quality indicator to the server.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: December 31, 2019
    Assignee: Intel IP Corporation
    Inventors: Thorsten Clevorn, Jan Ellenbeck
  • Patent number: 10499363
    Abstract: Disclosed are systems, devices and methods for determining a range estimate between two Bluetooth enabled devices based, at least in part, on round trip phase measurements of wireless signals transmitted between the devices. In one example, phase estimates between a single antenna of a first device and each element within the antenna array of a second device may be used to determine a residual range between the first device and the second device. In addition, an Angle of Arrival (AoA) may also be used to determine a two dimensional or three dimensional position of the second device.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: December 3, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Paul Dominic Hiscock, Thomas Allan, Murray Jarvis, Nicolas Graube
  • Patent number: 10499299
    Abstract: A method of progressive toggling from a first frequency band to a new frequency band, first mobile nodes being previously attached to the relay node, the method including, upon detection by the relay node of interference on the first frequency band, the relay node triggers the progressive toggling which includes: a selection by the relay node of a new frequency band not suffering interference, an occupation of the new frequency band by the relay node, a blocking of access to the connection to the relay node via the first frequency band for at least one second mobile node, a toggling of the first radio communications of the first active mobile nodes from the first frequency band to the new frequency band, and a freeing of the first frequency band by the relay node.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: December 3, 2019
    Assignee: AIRBUS DS SAS
    Inventors: Gérard Marque-Pucheu, Serge Delmas, Christine Helias-Foret, Christophe Gruet
  • Patent number: 10498417
    Abstract: According to one example, a communication method is described comprising receiving a message from a sender transmitted in each of a plurality of transmit antenna main beam directions and determining reception qualities of the messages. The method further comprises identifying a subset of a plurality of transmit antenna main beam directions based on the reception qualities of the messages, wherein the subset includes multiple transmit antenna main beam directions of the plurality of transmit antenna main beam directions, performing, for each transmit antenna main beam direction of the subset, a beam training procedure to determine an antenna weight vector for the transmit antenna main beam direction and performing a communication based on one of the determined antenna weight vectors.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: December 3, 2019
    Assignee: Intel IP Corporation
    Inventor: Maxim Greenberg
  • Patent number: 10491264
    Abstract: RF communication systems that provide combined demodulation and despreading are provided herein. In certain embodiments, an RF communication system generates an in-phase (I) signal and a quadrature-phase (Q) signal based on processing a received spread spectrum signal carrying a sequence of data symbols. The data symbols each have a symbol period and are coded by one or more multi-bit spreading codes. The RF communication system includes a symbol correlator that delays the I signal and the Q signal by an integer number of symbol periods to thereby generate a delayed I signal and a delayed Q signal, respectively. Additionally, the symbol correlator generates a correlation signal based on correlating the delayed I signal to the I signal and correlating the delayed Q signal to the Q signal. The RF communication system processes the correlation signal to recover the sequence of data symbols.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: November 26, 2019
    Assignee: Analog Devices Global Unlimited Company
    Inventors: Kenneth Joseph Mulvaney, Dermot G. O'Keeffe, Philip Eugene Quinlan
  • Patent number: 10454663
    Abstract: Embodiments of the present invention disclose a wireless communications method and system, and a full-duplex wireless transceiver, where the method includes: modulating a transmit digital signal into a first radio frequency signal and outputting the first radio frequency signal to a transmit antenna; then performing, under control of a pre-generated control signal, phase adjustment and amplitude adjustment on the first radio frequency signal and obtaining a cancellation signal; performing self-interference cancellation on a second radio frequency signal received from a radio air interface by using a receive antenna and the cancellation signal so as to generate a third radio frequency signal obtained after self-interference cancellation; and finally demodulating the third radio frequency signal into a receive digital signal.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: October 22, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jinnan Liu, Shulan Feng
  • Patent number: 10447339
    Abstract: A candidate arbitrary-phase spread spectrum modulation technique that offers similar performance to spread continuous phase modulation (CPM) waveforms and additional capabilities for programming a chosen frequency domain spectra into the resulting spread spectrum signal. The proposed chaotic-FSK waveform is derived from high-order sequence-based spread spectrum signals, with multi-bit resolution chaos-based sequences defining incremental phase words, enabling real-time efficient generation of practically non-repeating waveforms. A result of the C-FSK formulation is a parameterized hybrid modulation capable of acting like a traditional sequence-based spread spectrum signal or a traditional frequency shift keying signal depending on chosen parameters. As such, adaptation in this modulation may be easily implemented as a time-varying evolution, increasing the security of the waveform while retaining many efficiently implementable receiver design characteristics of traditional PSK modulations.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: October 15, 2019
    Assignee: Chaos Prime Inc.
    Inventor: Alan Michaels
  • Patent number: 10432251
    Abstract: A receiver includes a reception antenna, a reception unit, and a demodulation unit. The reception unit sequentially receives modulated signals resulting from spread spectrum via the reception antenna. The demodulation unit demodulate a first signal received by the reception unit by performing despreading using a short-period spreading code, the first signal including information for identifying a long-period spreading code. The demodulation unit identifies the long-period spreading code on the basis of the information obtained from the first signal. The demodulation unit then demodulates a second signal received by the reception unit after the first signal by performing despreading using the long-period spreading code.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: October 1, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Makoto Yamazaki, Tomohiro Ogino, Akinori Fujimura
  • Patent number: 10433249
    Abstract: A method and system for synchronized switching of a Transmission Time Interval (TTI) between at least two different TTI length values. A UE 100 transmitting a power report, where a control node 150 or a Base Station 110A evaluates the report and decides, based on the evaluation to order the UE to switch to a different TTI length. The order message comprises the number of TTIs after which a TTI switch has to occur, composed a.o. based on radio environment condition. The UE receives a TTI switch order message and replies with a single message to its serving BS with a message to switch the TTI in a synchronous way.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: October 1, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sairamesh Nammi, Mark Curran, Cagatay Konuskan, Gerardo Agni Medina Acosta
  • Patent number: 10396846
    Abstract: Time-offset, time-overlapping signals are received. The signals each include a pilot code, and at least some of the signals each include a user code occupying a time slot time-synchronized to a respective pilot code. Time-offset cross-correlation peaks for respective ones of the pilot codes are generated, each cross-correlation peak indicating a respective one of the time slots. For each time slot a respective projection vector including user code projections each indicative of whether a respective user code of known user codes is present in the time slot is generated. Particular ones of the projection vectors are selectively combined into an aggregate projection vector of aggregate user code projections, such that the aggregate projection vector has a signal-to-noise ratio (SNR) greater than the projection vectors individually. The user code is selected from among the known user codes based on the aggregate user code projections of the aggregate projection vector.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: August 27, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Ragnvald Balch Barth, Knut Inge Hvidsten, Michael A. Ramalho
  • Patent number: 10368280
    Abstract: Provided is a method for controlling a handover from a first base station to a second base station by a user equipment that performs radio communication over a communication channel formed by aggregating a plurality of component carriers, wherein scheduling information on each component carrier is transmitted to the user equipment according to either of a straight scheduling method and a cross scheduling method, and the method includes at the first base station, commanding first the user equipment to perform a handover from the first base station to the second base station on a second component carrier to be operated according to the straight scheduling method in the second base station, when it is determined that a handover on a first component carrier following the cross scheduling method is to be executed.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: July 30, 2019
    Assignee: SONY CORPORATION
    Inventor: Hiroaki Takano
  • Patent number: 10356826
    Abstract: Apparatuses, methods, and systems of a node that supports a simultaneous bidirectional wireless link with a second node are disclosed. One embodiment of the node includes a first sector that includes a first transceiver and a first plurality of antennas operative to form a beam directed to a first sector of a second node. The node further includes a second sector that includes a second transceiver and a second plurality of antennas operative to form a beam directed to a second sector of the second node. For at least one time slot of a plurality of time slots, one of the first transceiver or the second transceiver is operative to transmit a first communication signal to the second node while the other of the first transceiver or the second transceiver is operative to receive a second communication signal from the second node.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: July 16, 2019
    Assignee: Facebook, Inc.
    Inventors: Djordje Tujkovic, Krishna Gomadam, Sanjai Kohli
  • Patent number: 10333758
    Abstract: Methods and systems are provided for converting wideband signals. In an example system, a wideband signal that includes one or more narrowband signals may be received and handled, with the handling may include selecting a subset of signal processing circuits, from a plurality of signal processing circuits in the system, with the number of selected signal processing circuits being less than the total number of signal processing circuits in the system. Only the selected signal processing circuits are then enabled, such that all remaining signal processing circuits are not enabled. Signal processing adjustment may then be applied, via the subset of signal processing circuits, only to the one or more narrowband signals, such that a remainder of the wideband signal is not adjusted. The handling of the received wideband signal may include separating the one or more narrowband signals from the wideband signal.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: June 25, 2019
    Assignee: MAXLINEAR ASIA SINGAPORE PTE LTD.
    Inventors: Ryan Santa, Bernard Guay
  • Patent number: 10305591
    Abstract: A detection apparatus and method for noise intensity and a coherent optical receiver where the detection method includes: preprocessing a received signal to obtain a pilot sequence contained in the received signal; removing a phase noise of a receiving pilot sequence by using a known transmitting pilot signal; calculating a noise power density of the receiving pilot sequence with no (or without) phase noise within a predetermined spectral width near a pilot frequency; and calculating power of a linear noise of the received signal based on a bandwidth of the received signal and the noise power density within the predetermined spectral width. Hence, linear noises and nonlinear noises may be split efficiently without introducing much complexity, and information on intensities of various noises may be obtained.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: May 28, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Ying Zhao, Zhenning Tao
  • Patent number: 10295366
    Abstract: A sensor error correcting apparatus is provided with: a roll angle estimator configured to estimate a roll angle on the basis of a yaw rate of a moving body, a wheel speed, and lateral acceleration; a converter configured to convert the yaw rate to a horizontal yaw rate, on the basis of an estimated roll angle; and a zero point corrector configured to compare an azimuth change amount obtained by integrating the horizontal yaw rate in a turning period, which is from a start of turning of the moving body to an end of the turning, with an azimuth change amount of the velocity vector in the turning period, and configured to correct the measured lateral acceleration.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: May 21, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Noriyoshi Suzuki
  • Patent number: 10291358
    Abstract: An embodiment of the present invention discloses a data sending and receiving method. A first FEC unit of a sending device sends, by using a first channel, a first data stream on which first FEC encoding has been performed; a second FEC unit of the sending device sends, by using a second channel, a second data stream on which second FEC encoding has been performed; and the sending device performs interleaving on the first data stream and the second data stream, to obtain an output data stream, and sends the output data stream to a receiving device and error correction capability of a receiving device could be improved. In addition, in the present invention, an operation of writing by row and reading by column does not need to be performed. Therefore, no delay is generated.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: May 14, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Wenbin Yang, Tongtong Wang, Xinyuan Wang
  • Patent number: 10285065
    Abstract: Methods and apparatuses pertaining to long-range low-power integrated wireless transmission in channel gaps and guard spectrum are described. A method may involve facilitating wideband wireless communications in a plurality of wideband channels in a frequency spectrum with every two adjacent wideband channels of the plurality of wideband channels separated by a respective channel gap therebetween. The method may also involve facilitating narrowband wireless communications, while facilitating the wideband wireless communications, in a plurality of narrowband channels that are multiplexed in the channel gaps, guard bands at both ends of the frequency spectrum, or both.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: May 7, 2019
    Assignee: MediaTek Inc.
    Inventor: Yasantha Rajakarunanayake
  • Patent number: 10250360
    Abstract: Embodiments of the invention provide a decoder for decoding a signal received through a transmission channel in a communication system, said signal comprising a vector of information symbols, wherein the decoder comprises: a processing unit (307) configured to determine at least one candidate set of division parameters and to perform a division of said vector of information symbols into a set of sub-vectors in association with each candidate set of division parameters, each pair of sub-vectors being associated with a division metric; a selection unit (309) configured to select one of said candidate sets of division parameters according to a selection criterion depending on said division metric; and a decoding unit (311) configured to determine at least one estimate of each sub-vector associated with said selected set of division parameters by applying a symbol estimation algorithm, wherein the decoder is configured to determine at least one estimate of the vector of information symbols from said at least
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: April 2, 2019
    Assignee: INSTITUT MINES-TELECOM
    Inventors: Asma Mejri, Ghaya Rekaya Ben-Othman, Mohammed-Achraf Khsiba
  • Patent number: 10236989
    Abstract: Systems and methods for data transport in an optical communications system, including generating a pairwise optimized (PO) multi-dimensional signal constellation in a single stage. The PO multi-dimensional signal constellation is generated by selecting a pair of symbols from a received constellation with M symbols, defining and minimizing an objective function with one or more constraints to optimize the selected pair of symbols, and iteratively selecting and optimizing one or more different pairs of symbols from the received constellation until a threshold condition is reached. Neighbor symbols from the generated PO multi-dimensional signal constellation in each polarization are clustered to formulate a clustered PO multi-dimensional signal constellation, and data is modulated and transmitted in accordance with the clustered PO multi-dimensional signal constellation.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: March 19, 2019
    Assignee: NEC Corporation
    Inventors: Shaoliang Zhang, Fatih Yaman, Eduardo Mateo Rodriguez, Yoshihisa Inada
  • Patent number: 10211880
    Abstract: A system, method, and computer program product for chaotically generating a pseudorandom number sequence, such as for use in spread spectrum communications systems and in cryptographic systems. Chaotically generated pseudorandom numbers are not cyclostationary in nature, so output values encoded via such non-cyclostationary bases have no clear correlations. Spread signal communications systems using chaotically generated spreading codes thus operate without rate line artifacts, increasing their resistance to signal detection and to determinations of underlying signal chip rates and signal symbol rates. Broadcasts and guided transmissions (including either conductive wire or optical transmission media), in both radio frequency and optical systems are supported. Common spread spectrum communications systems including DSSS and FHSS may be strengthened through the use of chaotically generated spreading codes.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: February 19, 2019
    Assignee: Raytheon Company
    Inventors: Gary M. Graceffo, Andrew Kowalevicz
  • Patent number: 10187235
    Abstract: A synchronizer can include a symbol estimator, an inner-pattern de-mapper, a timing tracker, and a correlator. The symbol estimator can be configured to estimate one or more symbols of a received signal based on a phase signal. The inner-pattern de-mapper can be configured to de-map the one or more symbols to generate an inner-pattern de-mapped symbol estimation. The timing tracker can be configured to accumulate the inner-pattern de-mapped symbol estimation and to determine a peak position based on the accumulated inner-pattern de-mapped symbol estimation. The correlator can be configured to correlate the accumulated inner-pattern de-mapped symbol estimation based on a reference signal. The correlation of the accumulated inner-pattern de-mapped symbol estimation can be independent of a signal over sampling rate (OSR). The synchronizer can be adapted in a long range Bluetooth low energy (BLE) receiver.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: January 22, 2019
    Assignee: Intel IP Corporation
    Inventor: Yuwei Zhang
  • Patent number: 10187133
    Abstract: A system and machine-implemented method are described for adjusting communication with a first distributed-input-distributed-output (DIDO) client. For example, a method according to one embodiment of the invention comprises: applying DIDO weights to one or more data streams to generate one or more DIDO precoded data streams; receiving input channel quality information (CQI) and/or channel state information (CSI) related to DIDO communication channels over which the DIDO precoded data streams are to be transmitted; determining a power scaling factor based on the CQI and/or CSI; and applying the power scaling factor to each of the DIDO precoded data streams.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: January 22, 2019
    Assignee: REARDEN, LLC
    Inventors: Antonio Forenza, Stephen G. Perlman
  • Patent number: 10117250
    Abstract: A base station includes a transmitter configured to transmit a downlink control information to a user equipment, the downlink control information being generated based on one of (1) a first uplink allocation information indicating a first frequency block corresponding to a first plurality of subcarriers which are contiguous in frequency and (2) a second uplink allocation information indicating a second frequency block corresponding to a second plurality of subcarriers which are contiguous in frequency and a third frequency block corresponding to a third plurality of subcarriers which are contiguous in frequency, the second frequency block and the third frequency block being separated in frequency.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: October 30, 2018
    Assignee: NEC CORPORATION
    Inventors: Takamichi Inoue, Kenji Koyanagi, Le Liu, Yoshikazu Kakura
  • Patent number: 10110252
    Abstract: Multiple data permutation operations in respective different dimensions are used to provide an overall effective data permutation using smaller blocks of data in each permutation than would be used in directly implementing the overall permutation in a single permutation operation. Data that has been permuted in one permutation operation is block interleaved, and the interleaved data is then permuted in a subsequent permutation operation. A matrix transpose is one example of block interleaving that could be applied between permutation operations.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: October 23, 2018
    Assignee: INPHI CORPORATION
    Inventors: Arash Farhoodfar, Frank R. Kschischang, Benjamin P. Smith, Andrew Hunt
  • Patent number: 10096322
    Abstract: An audio decoder configured to produce an audio signal from a bitstream containing audio frames includes: a core band decoding module configured to derive a directly decoded core band audio signal from the bitstream; a bandwidth extension module configured to derive a parametrically de-coded bandwidth extension audio signal from the core band audio signal and from the bitstream, wherein the bandwidth extension audio signal is based on a frequency domain signal having at least one frequency band; and a combiner configured to combine the core band audio signal and the bandwidth extension audio signal so as to produce the audio signal; wherein the bandwidth extension module includes an energy adjusting module being configured in such way that in a current audio frame in which an audio frame loss occurs, an adjusted signal energy for the cur-rent audio frame for the at least one frequency band is set.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: October 9, 2018
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Jérémie Lecomte, Fabian Bauer, Ralph Sperschneider, Arthur Tritthart
  • Patent number: 10091779
    Abstract: To solve a problem that although the increase of the number of frequency blocks by allocating discontinuous subcarriers (RBs) as in OFDM enables an increase in multi-diversity effect and an improvement in throughput, the number of RB allocation patterns increases with the increase of the number of frequency blocks, resulting in an increase in the amount of information relating to the allocated RBs, the resource block allocation unit is determined when resource blocks discontinuous on the frequency axis are allocated to a terminal, and the number of bits of scheduling information indicating the allocated resource blocks by using Tree Based is set to the number of bits corresponding to the determined allocation unit.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: October 2, 2018
    Assignee: NEC CORPORATION
    Inventors: Kenji Koyanagi, Takamichi Inoue, Le Liu, Yoshikazu Kakura
  • Patent number: 10075254
    Abstract: A signal transmitting method includes: constructing data for first antenna and data for second antenna, where the data for first antenna comprises first transmission data that needs to be transmitted to a first device, transmission data that needs to be transmitted to a second device, and a parameter of a transmission channel from a second antenna to the first device; and using the first antenna and the second antenna to transmit the data for first antenna and the data for second antenna to the first device and the second device respectively, so that the first device cancels interference caused by the transmission data that needs to be transmitted to the second device in the data for first antenna and the data for second antenna, to the first transmission data and the second transmission data.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: September 11, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Rongdao Yu, Sheng Liu
  • Patent number: 10069542
    Abstract: The invention relates to a wireless communications system for communicating with user equipment located inside a physical structure. The system comprise a node having at least two antenna ports and being adapted for wireless communication with the user equipment, and at least one leaky cable having two ends wherein each end of the at least one leaky cable is connected to one of the antenna ports of the node. The at least one leaky cable is provided at least partially inside the physical structure and being adapted for wireless communication over a radio channel with the user equipment.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: September 4, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Mikael Coldrey, Henrik Asplund, Martin Johansson, Andreas Nilsson
  • Patent number: 10044593
    Abstract: A system is provided for controlling the flow of data-packet traffic through an Ethernet telecommunications network having a multiplicity of nodes interconnected by multiple network links. Incoming data-packet traffic from multiple customer connections are received at a first node for entry into the network via the first node. Flow control messages are generated to represent the states of the first node and, optionally, one or more network nodes upstream from the first node, and these states are used as factors in controlling the rate at which the incoming packets are admitted to the network. Alternatively, the flow control messages may be used to control the rate at which packets generated by a client application are transmitted to the first node.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: August 7, 2018
    Assignee: Ciena Corporation
    Inventors: Natalie Giroux, Ken Young, Brian Smith, Chris Barrett, Pablo Frank
  • Patent number: 9973215
    Abstract: The system described herein provides for the use of FEC in connection with mulithoming/multipathing functionality in a system leveraging multiple pathways and/or access circuits for packet delivery in a data network. In an appliance using multipathing, sophisticated path characterization, scheduling, and sequencing algorithms are used to support path aggregation independent of the heterogeneity in path characteristics. Adding FEC to a controlled multipathing solution may reduce the perceived loss rate, contribute to better performance in terms of delay and throughput, and provide for a more effective use of FEC. A multipathing solution splits network traffic at the packet level according to network and connection conditions. FEC may be added to the packets in connection with transmission of the packets along the multiple paths and the level/amount of the FEC coding may be controlled based on the ratio of the rate at which the packets are split among the multiple paths.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: May 15, 2018
    Assignee: EMC IP Holding Company LLC
    Inventors: Raghupathy Sivakumar, Aravind Velayutham
  • Patent number: 9967013
    Abstract: A method for transmitting feedback information to a base station by a user equipment, for massive antenna array based beamforming in a wireless communication system is disclosed. The method includes receiving information about a plurality of pilot patterns for a massive antenna array from the base station, estimating a plurality of channels corresponding to the plurality of pilot patterns by receiving a pilot signal based on the plurality of pilot patterns, and transmitting the feedback information for the plurality of channels to the base station, wherein the feedback information includes information about whether closed-loop beamforming or open-loop beamforming is applied to the plurality of channels and information about an effective antenna array for the plurality of channels.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: May 8, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jiwon Kang, Kilbom Lee, Kitae Kim
  • Patent number: RE47782
    Abstract: A multi-channel transceiver includes a phase-locked loop circuit, a first transmitting channel and a second transmitting channel. The phase-locked loop circuit generates a first clock signal set and a second clock signal set with different frequencies. The first transmitting channel includes a first phase adjusting circuit and a first transmitter. The first phase adjusting circuit receives the first clock signal set and generates a first spread spectrum clock signal with a first SSCG profile. According to the first spread spectrum clock signal, the first transmitter generates a first serial data. The second transmitting channel includes a second phase adjusting circuit and a second transmitter. The second phase adjusting circuit receives the second clock signal set and generates a second spread spectrum clock signal with a second SSCG profile. According to the second spread spectrum clock signal, the second transmitter generates a second serial data.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: December 24, 2019
    Assignees: GLOBAL UNICHIP CORPORATION, TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Yen-Chung Chen, Shan-Jie Wang, Cheng-Hung Wu, Tsai-Ming Yang