Correlation-type Receiver Patents (Class 375/150)
  • Patent number: 10651889
    Abstract: A method for the detection of a pulse of a signal received by a receiver device, the received signal corresponding to data emitted with a predetermined period Tc, each piece of data being encoded by a presence or an absence of a pulse. The method includes: temporally offsetting of the received signal according to a predetermined number Ns of delays corresponding to different multiples of Tc, so as to generate Ns delayed signals; correlating, at a time that is a candidate for the detection of a pulse, the received signal with each of the delayed signals, in so as to obtain Ns correlation values associated with the candidate time; calculating a maximum correlation value among the Ns correlation values associated with the candidate time; and detecting a pulse of the received signal according to the maximum correlation value.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: May 12, 2020
    Assignee: UWINLOC
    Inventor: Jan Mennekens
  • Patent number: 10551491
    Abstract: Synthetic aperture radar (SAR) imaging systems that transmit repeated waveforms based upon pseudonoise sequences to generate SAR imaging data in accordance with various embodiments of the invention are disclosed. A synthetic aperture radar in accordance with one embodiment of the invention includes: a transmitter configured to transmit superchirps, where the superchirp is generated by convolving a kernel with a pseudonoise modulated impulse sequence having a flat power spectrum; a receiver configured to receive backscatters of transmitted superchirps and digitize the received backscatters; and signal processing circuitry configured to perform matched filtering on digitized backscatters.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: February 4, 2020
    Assignee: Planet Labs Inc.
    Inventors: Michael Rubel, Creon Levit, Matthew Ferraro
  • Patent number: 10520604
    Abstract: A module making it possible to detect a disturbance signal during initial receiving by a receiver of navigation information, the receiver including a plurality of elementary antennas able to receive, in a plurality of arrival directions, electromagnetic signals including navigation information, a forming unit able to form a resultant signal from the electromagnetic signals and a processing unit able to process the resultant signal, the detection module being integrated into the forming unit and able to receive the electromagnetic signals coming from each of the elementary antennas, analyze the signals and detect a disturbance signal when the receiver is started cold in case of detection of a favored arrival direction of some of the electromagnetic signals.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: December 31, 2019
    Assignee: THALES
    Inventors: Stéphane Corazza, Bruno Montagne, Denis Bouvet
  • Patent number: 10516455
    Abstract: According to one embodiment of the disclosure, a non-transitory computer-readable medium comprising instructions which, when executed by one or more hardware processors, causes performance of operations. One of these operations comprises transmitting, from a first device to a second device, a first plurality of frames using a first polarization configuration for a first antenna corresponding to the first device. Based on feedback information associated with the first plurality of frames, a second polarization configuration, which is different than the first polarization configuration, is selected for transmitting a second plurality of frames. Thereafter, the second plurality of frames is transmitted from the first device to the second device using the second polarization configuration for the first antenna.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: December 24, 2019
    Assignee: Hewlett Packard Enterprise Development LP
    Inventor: Subburajan Ponnuswamy
  • Patent number: 10509118
    Abstract: This disclosure relates to systems and methods for measuring wave fields of a body of water. A system can include a radiation source and an antenna that can cooperate with the radiation source to transmit a radio frequency (RF) signal to a wave field having one or more waves. The antenna can receive backscattered signals from the wave field. The system can include a local oscillator and a processor. The local oscillator downconverts the backscattered signals into baseband signals and the processor can process the baseband signals to determine a relative velocity of each of the waves of the wave field. The processor can further be programmed to identify an observed portion of the backscattered signals as bad data and remove the bad data from further processing.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: December 17, 2019
    Assignees: Ohio State Innovation Foundation, The Regents of the University of Michigan
    Inventors: Joel Johnson, Andrew O'Brien, David Lyzenga, Graeme Smith, Shanka N. Wijesundara
  • Patent number: 10505620
    Abstract: In receiving radio waves from a transmitter by an array antenna, and estimating an arrival direction of a direct wave, delay times of the arriving waves are estimated (13) by means of a super-resolution process based on transmission channel estimation results, an arriving wave component corresponding to the delay time having been determined to be equal to or longer than a threshold value is removed (15) from the transmission channel estimation results, arriving wave components after the removal are separated from each other to extract direct wave components (17), and an arrival angle is estimated (19). The arrival direction of the direct wave can be accurately estimated in an environment where delayed waves of short delay times are present. Also, the amount of calculation is small even when the super-resolution process is performed.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: December 10, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naosuke Ito, Daisuke Shimbo
  • Patent number: 10491262
    Abstract: Techniques of transmitting wireless communications involve generating orthogonal spreading codes for any number of user devices that are linear combinations of sinusoidal harmonics that match the frequencies within the spread bandwidth. Along these lines, prior to transmitting signals, processing circuitry may generate a set of initial code vectors that form an equiangular tight frame having small cross-correlations. From each of these rows, the processing circuitry produces a new spreading code vector using a code map that is a generalization of a discrete Fourier transform. The difference between the code map and a discrete Fourier transform is that the frequencies of the sinusoidal harmonics are chosen to match the particular frequencies within the spread bandwidth and differ from a center frequency by multiples of the original unspread bandwidth. Different transmitters may then modulate respective signals generated with different spreading code vectors.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: November 26, 2019
    Assignee: Rampart Communications, Inc.
    Inventors: Matthew Brandon Robinson, Andrew Keith Palmisano, Kregg Elliott Arms, Audrey Nichole Moore
  • Patent number: 10404271
    Abstract: A biphase mark coding transmitter is provided. In the biphase mark coding transmitter, a delay control unit performs equal-interval delay processing on data transmitted by a data coding and protocol processing unit. Then, the current-steering digital-to-analog converter is controlled to charge or discharge a resistance-capacitance circuit to obtain an accurately-controlled conversion time. Data with the controlled conversion time is driven to a CC by a unity-gain buffer to generate an output waveform. The technical solution solves the technical problem of a mutual influence between power source systems of a traditional BMC transmitter which is a digital module and a traditional BMC receiver which is an analog module, and the technical problem of a large noise of a power switch and large consumption of chip area and power which are resulted from digital buffers driven by equal-interval data or clocks in a traditional BMC transmitter.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: September 3, 2019
    Assignee: LONTIUM SEMICONDUCTOR CORPORATION
    Inventors: Cheng Tao, Xi Xu, Xiangyu Ji, Jiaxi Fu
  • Patent number: 10374902
    Abstract: A Kernel-power-density based method for wireless channel multipath components (MPCs) clustering. Signals get to the receiver from a transmitter via multipath propagation. MIMO channels can be modeled as double-directional, which contains the information of power, delay, direction of departure (DOD) and direction of arrival (DOA) of MPCs. The MPCs tend to appear in clusters. All the parameters of MPCs can be estimated by using high-resolution algorithms, such as MUSIC, CLEAN, SAGE, and RiMAX. Considering a data snapshot for a certain time with several clusters, which include a number of MPCs, where each MPC is represented by its power, delay, DOD and DOA. This invention adopts a novel clustering framework by using a density based method, which can better identify the local density variations of MPCs and requires no prior knowledge about clusters. It can work for the cluster oriented channel processing technology in future wireless communication field.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: August 6, 2019
    Assignee: Beijing Jiaotong University
    Inventors: Ruisi He, Bo Ai, Qingyong Li, Qi Wang, Li'ao Gengyang, Ruifeng Chen, Zhangdui Zhong, Jian Yu
  • Patent number: 10356408
    Abstract: An apparatus comprises a dividing unit which divides image data to be encoded into a plurality of tiles, a converting unit which generates a plurality of sub-bands by a frequency transform on the divided tiles, a quantizing unit which quantizes the generated sub-bands by either (1) a first method of quantizing by identical quantization parameters in relation to identical sub-bands of a plurality of tiles, or (2) a second method of quantizing by quantization parameters set individually for each tile in relation to identical sub-bands of a plurality of tiles, an encoding unit which encodes data obtained by the quantizing, and a control unit which switches, in accordance with a target data amount of the image data to be encoded, whether to quantize by the first method or to quantize by the second method.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: July 16, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryota Suzuki, Koji Togita
  • Patent number: 10356699
    Abstract: There is provided mechanisms for cell search in a cluster based communications network. According to one aspect there is provided a method performed by a wireless device camping on or served by a cluster head device associated with a cluster head carrier frequency. According to one aspect there is provided a method performed by a cluster head device associated with a cluster head carrier frequency. A corresponding wireless device, a corresponding cluster head device, and corresponding computer programs and computer program products are also provided.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: July 16, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Bengt Lindoff, Johan Nilsson
  • Patent number: 10298345
    Abstract: Aspects of the present disclosure includes a method and program product for clock synchronization of a networked computer system. The method records a time (t1) when a first codeword marker in a datastream is sent from a master computer to a slave computer and records a second time (t2) when the slave computer receives the first codeword marker. The method includes recording a third time (t3) when a third codeword marker in a datastream is sent from the slave computer to the master computer. The method includes recording a fourth time t4 when the master receives the third codeword marker from the slave. The method calculates a time offset ?, according to; ? = ( t ? ? 2 - t ? ? 1 ) + ( t ? ? 4 - t ? ? 3 ) 2 , and a roundtrip delay ?, according to ?=(t4?t1)?(t3?t2). The clock in the slave computer is synchronized with a clock in the master computer using ? and ?.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: May 21, 2019
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Kai Yang, Bin Sun, Yuan Yao, Zhen Han
  • Patent number: 10277390
    Abstract: A method, apparatus and computer program product for performing decimated correlation in a wireless communications network is disclosed. An input signal composed of a plurality of streaming samples of the input signal is received and applied to a plurality of shift registers coupled to computation logic. The computation logic receives an input of correlation options and a correlation pattern. Based upon a comparison to a correlation threshold, the correlator selectively holds the correlation options constant to inhibit a new correlation, and/or selectively freezes streaming samples input to the computation logic via a plurality of corresponding shadow registers to save power.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: April 30, 2019
    Assignee: Arm Limited
    Inventors: Paul Edward Gorday, Ricardo Franco
  • Patent number: 10256933
    Abstract: A method and device for transmitting a preamble sequence is disclosed. A transmitter according to an embodiment may extract a first sequence for a non-coherent receiver and a second sequence for a coherent receiver, from ternary preamble sequences including elements ?1, 0 and 1, and map the first sequence and the second sequence to a preamble including a plurality of bits to generate a third sequence that the non-coherent receiver and coherent receiver support.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: April 9, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang Soon Park, Young Jun Hong, Jinesh P Nair, Joon Seong Kang, Young Soo Kim, Sujit Jos, Manoj Choudhary
  • Patent number: 10250427
    Abstract: The present technology relates to a receiver, a frame synchronization method, a transmitter, a transmission method, and a program that allows for enhancing frame synchronization performance without reducing throughput. A receiver of an aspect of the present technology receives signals of a frame having a preamble including a frame detection signal sequence formed by a repetition of a known signal sequence, followed by a frame synchronization signal sequence formed by the known signal sequence or an inverse sequence thereof, performs convolution arithmetic operation of a known correlation sequence and cross-correlation between a received signal sequence and the frame synchronization signal sequence, and ensures synchronization of the frame while regarding predetermined time when a value more than or equal to a threshold value or a maximum value is obtained. The present technology can be applied to a device that transmits and receives data.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: April 2, 2019
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Masashi Shinagawa, Makoto Noda
  • Patent number: 10230409
    Abstract: Signals are received that include a channel band and an adjacent band. The channel band is demodulated to obtain recovered symbols. Cross-correlation between the recovered symbols and the adjacent band is estimated. Adjacent channel interference is estimated, using the estimated cross-correlation of the recovered symbols and the adjacent band. Upon the estimated adjacent channel interference meeting a condition, a back-off command is sent to a transmitter power amplifier.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: March 12, 2019
    Assignee: Hughes Network Systems, LLC
    Inventor: Neal D. Becker
  • Patent number: 10218419
    Abstract: A block coding method and system for improving the reliability of Channel Quality Indicators (CQI) and antenna weight indicators (AWI) reporting. A user terminal first generates 8-bit CQI and 2-bit AWI. A codeword generator produces a codeword responsive to these 10 CQI/AWI bits using a codebook or a generator matrix of a (20,10,6) code. The (20,10,6) code has a minimum Hamming distance of 6 The encoded codeword is transmitted to a receiver for decoding utilizing an identical (20,10,6) codebook.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: February 26, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Jung-Fu Cheng, Yi-Pin Eric Wang, Stephen Grant
  • Patent number: 10187231
    Abstract: One aspect of the present invention includes a bi-phase communication receiver system. The system includes an analog-to-digital converter (ADC) configured to sample a bi-phase modulation signal to generate digital samples of the bi-phase modulation signal. The system also includes a bi-phase signal decoder configured to decode the bi-phase modulation signal based on the digital samples. The system further includes a preamble detector comprising a digital filter configured to evaluate the digital samples to generate an output and to detect a preamble of the bi-phase modulation signal for decoding the bi-phase modulation signal based on the output.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: January 22, 2019
    Assignee: Texas Instruments Incorporated
    Inventor: Eric Gregory Oettinger
  • Patent number: 10158464
    Abstract: A mobile terminal device may include a receiver circuit and a processing circuit. The receiver circuit may be configured to receive a composite signal comprising a plurality of reference signal patterns associated with a plurality of transmit locations. The processing circuit may be configured to identify a first reference signal pattern and a second reference signal pattern from the plurality of reference signal patterns; generate a first offset estimate and a second offset estimate based on the first reference signal pattern and the second reference signal pattern; determine a refined offset estimate based on the first offset estimate and the second offset estimate, wherein first offset estimate has a greater offset estimation range than the second offset estimate.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: December 18, 2018
    Assignee: Intel IP Corporation
    Inventors: Dae Jung Yoon, Bertram Gunzelmann, Ansgar Scherb
  • Patent number: 10153804
    Abstract: Circuits and methods concerning signal detection are disclosed. In some example embodiments, an apparatus is configured to detect presence of a spreading sequence in a sample data sequence. Phase differences between samples in a sample sequence are determined. Presence of a spreading sequence in the sample sequence is detected by evaluating correlation of reference sub-sequences, of a reference spreading sequence, to the phase differences between samples in a sample sequence. Each of the reference sub-sequences includes fewer chips than the spreading sequence to be detected.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: December 11, 2018
    Assignee: NXP USA, Inc.
    Inventors: Khurram Waheed, Kevin Traylor, Mihai-Ionut Stanciu
  • Patent number: 10135655
    Abstract: The present disclosure discloses an indication information transmission method and apparatus. The method includes: determining a first signature sequence and a first modulation constellation that are used to transmit an uplink data stream by a terminal device; determining indication information that is used to indicate the first signature sequence and the first modulation constellation; and transmitting the indication information to the terminal device. In this way, a system network capacity can be effectively increased.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: November 20, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xiuqiang Xu, Lei Wang, Yan Chen
  • Patent number: 10122396
    Abstract: Mechanisms for interferer detection can detect interferers by detecting elevated signal amplitudes in one or more of a plurality of bins (or bands) in a frequency range between a maximum frequency (fMAX) and a minimum frequency (fMIN). To perform rapid interferer detection, the mechanisms downconvert an input signal x(t) with a local oscillator (LO) to a complex baseband signal xI(t)+jxQ(t). xI(t) and xQ(t) are then multiplied by m unique pseudorandom noise (PN) sequences (e.g., Gold sequences) gm(t) to produce m branch signals for I and m branch signals for Q. The branch signals are then low pass filtered, converted from analog to digital form, and pairwise combined by a pairwise complex combiner. Finally, a support recovery function is used to identify interferers.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: November 6, 2018
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Peter R. Kinget, John Wright, Rabia Tugce Yazicigil
  • Patent number: 10063330
    Abstract: A wireless network transmission system is provided. The wireless network transmission system comprises a first transmission device and at least a second transmission device. The first transmission device includes a control circuit and a plurality of first antennas. The control circuit is electrically connected to the first antennas. The second transmission device is configured to be communicated with the first transmission device. The first antennas receive wireless signals from the second transmission device. The control circuit is configured to compare signal strength of the wireless signal received by each of the first antennas to generate a comparison result select at least one of the first antennas to transmit or receive the wireless signals according to the comparison result. A wireless network transmission method and a transmission device are also provided.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: August 28, 2018
    Assignee: ASUSTeK COMPUTER INC.
    Inventors: Yen-Ching Kuo, Jung-Huang Chiang, Ten-Long Deng, Hsiao-Ming Tsai
  • Patent number: 10051437
    Abstract: A receiver including a plurality of correlators to receive a satellite signal having a line of sight (LOS) component and a multipath (MP) component and generate correlator results corresponding to the received satellite signal. The receiver includes a peak search module to identify frequency peaks in the received satellite signal based on the correlator results, a peak selection module to identify the LOS component of the received satellite signal based on the identified frequency peaks and at least one of a code phase error module to generate a code phase error corresponding to the identified LOS component and a carrier frequency error module to generate a carrier frequency error corresponding to the identified LOS component. The plurality of correlators are further to generate the correlator results based on at least one of the code phase error and the carrier frequency error.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: August 14, 2018
    Assignee: Marvell International Ltd.
    Inventors: Jiangping Deng, Zhike Jia, Jian Cheng, Feng Xu, Yongsong Wang
  • Patent number: 10038455
    Abstract: A signal modulation device comprising: an input for receiving a complex input signal (106) comprising an in-phase component signal and a quadrature-phase component signal, a sigma-delta modulator (110) for modulating the complex input signal at an oversampling clock rate (F1) into an intermediary signal (112), a numerical oscillator (60) for generating a phase signal (61) oscillating at a selected carrier frequency (FC), wherein the phase signal takes a finite number of quantized states, and a symbol mapping table (114) comprising a predefined quantized symbol for each quantized complex state of the intermediary signal and each quantized state of the phase signal, and operates at each oversampling clock period (F1) to select a quantized symbol (116) as a function of a current quantized complex state of the intermediary signal (112) and a current quantized state of the phase signal (61).
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: July 31, 2018
    Assignee: Alcatel Lucent
    Inventor: Luc Dartois
  • Patent number: 10027471
    Abstract: A primary device implementing the subject system of link establishment for single pair Ethernet may include at least one processor circuit. The at least one processor circuit may be configured to transmit a first synchronization sequence to a secondary device and to subsequently detect a second synchronization sequence, different than the first, transmitted by the secondary device. The synchronization sequences may be pseudo-noise sequences that have strong autocorrelation characteristics. The at least one processor circuit may be configured to wait a predetermined amount of time after completing the detection of the second synchronization sequence, and then may initiate a training stage. The training stage may include exchanging scrambler states of additive scramblers used by the primary and secondary devices. The at least one processor circuit may be configured to enter a data mode upon completion of training. In the data mode, data is forward error correction encoded and then scrambled.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: July 17, 2018
    Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
    Inventors: Chung Ming Tu, Peiqing Wang, Ahmad Chini, Yencheng Chen, Mehmet Vakif Tazebay, Bazhong Shen
  • Patent number: 10024975
    Abstract: Methods, systems, and computer program products are provided for analyzing a Global Navigation Satellite System (GNSS) receiver. The method includes receiving electronic diagnostic information from the GNSS receiver, the diagnostic information including observations at different times of signal strength of one or more satellites at each point in a visible sky. The method includes building a flat map of the visible sky including a track of the one or more satellites. The method includes calculating, for each point in the visible sky of the flat map, an aggregated signal strength of the one or more satellites over a predetermined interval. The method includes generating a heat map over the flat map of the visible sky and displaying a visualization of a flat heat map.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: July 17, 2018
    Assignee: Finite State Research LLC
    Inventor: Cort Dougan
  • Patent number: 10020839
    Abstract: Techniques of transmitting wireless communications involve generating orthogonal spreading codes for any number of user devices that are linear combinations of sinusoidal harmonics that match the frequencies within the spread bandwidth. Along these lines, prior to transmitting signals, processing circuitry may generate a set of initial code vectors that form an equiangular tight frame having small cross-correlations. From each of these rows, the processing circuitry produces a new spreading code vector using a code map that is a generalization of a discrete Fourier transform. The difference between the code map and a discrete Fourier transform is that the frequencies of the sinusoidal harmonics are chosen to match the particular frequencies within the spread bandwidth and differ from a center frequency by multiples of the original unspread bandwidth. Different transmitters may then modulate respective signals generated with different spreading code vectors.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: July 10, 2018
    Assignee: RAMPART COMMUNICATIONS, LLC
    Inventors: Matthew Brandon Robinson, Andrew Keith Palmisano, Kregg Elliott Arms, Audrey Nichole Moore
  • Patent number: 10021447
    Abstract: A receiving apparatus is provided. The receiving apparatus includes: a receiver configured to receive an input signal including a transmission frame which includes a bootstrap, a preamble, and a payload; a bootstrap detector configured to detect the bootstrap based on a correlation between the input signal and a reference signal which is pre-stored; and a signal processor configured to signal-process the preamble based on the detected bootstrap and signal-process the payload based on the signal-processed preamble, and the bootstrap detector is configured to determine the correlation by quantizing at least one of the input signal and the reference signal and then multiplexing the input signal and the reference signal at least one of which is quantized. Accordingly, an area occupied by hardware and cost can be reduced and loss of performance can be minimized.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: July 10, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min-ho Kim, Jung-hyun Park, Sung-kyu Jung, Doo-chan Hwang
  • Patent number: 9998989
    Abstract: A wireless communication device may include a baseband processing unit comprising a wakeup detector configured to receive a wireless signature beacon signal; determine that the received wireless signature beacon signal matches the selected wakeup signature beacon signal; and generate a wake up signal, in response to determining that the received wireless signature beacon signal matches the selected wakeup signature beacon signal. The wireless communication device may further include an application processing unit comprising a power manager configured to cause the wireless communication device to enter a power saving mode; receive the wake up signal from the wakeup detector; and perform a wakeup process, in response to receiving the wakeup signal wherein the wakeup process causes the wireless communication device to exit the power saving mode.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: June 12, 2018
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Ye Huang, Lei Song, David Chiang
  • Patent number: 9967766
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus for adaptive antenna switching for measurements, for example, in high gain automotive devices. According to certain aspects, a method is provided herein for wireless communications. The method generally includes selecting, based on one or more conditions, a first measurement configuration that uses at least an external antenna mounted on a surface of a vehicle for one or more measurements or a second measurement configuration that uses at least an internal antenna associated with the vehicle for the one or more measurements; performing the one or more measurements using the selected measurement configuration; and sending a report based on the one or more measurements. The techniques for measurement configuration selection may allow the device to achieve the benefits of both the high gain external antenna and the lower gain internal antenna(s) depending on the current conditions.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: May 8, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Madhusudan Kinthada Venkata, Srinivasan Balasubramanian, Manjinder Singh Sandhu, Abhinav Dayal, Siva Kumar Jujaray, Raj Surya Pratha
  • Patent number: 9935681
    Abstract: A direct sequence spread spectrum (DSSS) receiver includes an antenna, signal-to-noise ratio (SNR) estimation logic, and preamble detection logic. The antenna is configured to receive a DSSS signal. The SNR estimation logic is configured to estimate SNR of the received DSSS signal. The preamble detection logic is configured to, in response to the SNR estimate exceeding a SNR threshold value, detect a preamble sequence in the DSSS signal based on an absolute value of a sequence of correlation values. The sequence of correlation values is a complex quantity.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: April 3, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Srinivas Lingam, Timothy Mark Schmidl
  • Patent number: 9874624
    Abstract: Interference detection and mitigation using maximal ratio combining in the correlation domain. Systems and methods for interference detection and mitigation using maximal ratio combining in the correlation domain may receive a plurality of copies of a positioning signal, compute a plurality of correlation functions using the received positioning signals; weight the plurality of correlation functions using a plurality of weights that are proportional to the quality of the plurality of correlation functions, and generate a combined correlation function by combining the weighted correlation functions.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: January 23, 2018
    Assignee: NextNav, LLC
    Inventors: Mir Hamza Mahmood, Arun Raghupathy, Andrew Sendonaris
  • Patent number: 9875461
    Abstract: An RFID cabinet system is provided for monitoring items having an RFID tag. System includes cabinet having open interior where items are stored and at least one door providing access to items. Static RFID system is provided for reading and identifying data embedded on RFID tag located on at least some of the items placed within cabinet. Static RFID system is configured to monitor substantially all items located within the interior of cabinet when door is closed. Transaction RFID system is provided for reading one of the RFID tags upon removal or return of the associated item from cabinet. Transaction RFID system is operable when door is open. Computer system is configured to sense opening and closing of door. Computer system is configured to receive input that identifies user, and computer system is configured to periodically record data read from RFID tags by static RFID system and transaction RFID system.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: January 23, 2018
    Assignee: Omnicell, Inc.
    Inventors: George John D'Ambrosio, Onne Ganel, Nat Moody, Gerardo Moreno
  • Patent number: 9860848
    Abstract: This disclosure relates to techniques for estimating baseband power consumption and using the baseband power consumption estimation to select baseband operation features. According to some embodiments, one or more baseband power consumption modifiers occurring during an estimation window may be identified. Baseband power consumption of the wireless device during the estimation window may be estimated based on the identified baseband power consumption modifiers occurring during the estimation window. Baseband data throughput of the wireless device during the estimation window may also be estimated. One or more baseband operation characteristics may be selected based at least in part on the estimated baseband power consumption during the estimation window, possibly in conjunction with the estimated baseband data throughput during the estimation window, current wireless medium conditions, and/or other considerations.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: January 2, 2018
    Assignee: Apple Inc.
    Inventors: Sunny Arora, Rati Agrawal, Sami M. Almalfouh, Xiantao Sun, Johnson O. Sebeni, Wael S. Barakat, Navid Damji, Srinivas Pasupuleti, Raghuveer Mallikarjunan
  • Patent number: 9784845
    Abstract: A method and apparatus for processing navigational signals with reduced bandwidth by receiving a combination of two navigational signals, reducing the frequency of the combined two navigational signals to an intermediate frequency (IF); converting the IF signal to digital signals; translating the frequency of the IF signal to near baseband; filtering the near baseband signal; reducing the sample rate of the filtered near-baseband signal by a factor; translating a selection of the reduced, filtered, near-baseband signal to a single sidelobe; storing the single sidelobe in memory; and processing the single sidelobe for navigational purposes.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: October 10, 2017
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Gary Lennen
  • Patent number: 9729195
    Abstract: At least one embodiment of a correlator comprising a plurality of correlator taps is configurable to provide synchronization and symbol modulation for a plurality of modulation systems. Among other uses, at least one embodiment of the correlator can provide a coarse symbol timing value. In response to determining the coarse symbol timing value, a receiver can receive a signal. Among other uses, at least one embodiment of the correlator can provide a carrier frequency offset (CFO) estimate. In response to determining the CFO estimate, a receiver can receive a signal.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: August 8, 2017
    Assignee: NXP USA, Inc.
    Inventors: Raja V. Tamma, Justin A. Fritz, Mihai-Ionut M. Stanciu
  • Patent number: 9720470
    Abstract: The present invention relates to a method for controlling the operation of an electronic device for processing data, said device comprising at least one computational unit for receiving input data and processing said input data for generating output data, and further comprising a control unit for receiving at least a part of said input data and delivering at least one control signal to said at least one computational unit for controlling the operation of said at least one computational unit, characterized in said control unit using said input data to determine a computational effort and further using said control signal to control parameters of said at least one computational unit depending on said computational effort, wherein said parameters comprise a combination of: clock rate and/or supply voltage; and process complexity.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: August 1, 2017
    Assignee: OPTIS CIRCUIT TECHNOLOGY, LLC
    Inventors: Erik G. Larsson, Oscar Gustafsson
  • Patent number: 9715418
    Abstract: Embodiments described herein include detecting under-performing devices using a correlational matrix in which devices are compared with one another in order to establish which devices are performing significantly different, e.g. under-performing, than the rest. According to one embodiment, a method includes generating a vector for each of a plurality of hardware devices. Using a hardware processor, a correlational matrix representing projections of the vectors against each other is created. A determination is made as to which hardware device is least like the other hardware devices based on the correlational matrix. A result of the determining is output.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: July 25, 2017
    Assignee: International Business Machines Corporation
    Inventor: Felipe A. Barajas
  • Patent number: 9705560
    Abstract: A method of performing a discrete Fourier transform (DFT) on one or more data samples in a global navigation satellite system baseband tracking channel is provided. The method comprises loading a pseudorandom noise code generator with a constant value in the baseband tracking channel; setting a tracking loop integration time according to a selected frequency resolution; updating a carrier generator with a selected DFT frequency in the baseband tracking channel; integrating a data sample in the baseband tracking channel; and storing the integrated data sample in a DFT bin. The method determines whether all DFT bins have been received, and if all DFT bins have not been received, the method repeats starting with updating the carrier generator, until all DFT bins have been received.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: July 11, 2017
    Assignee: Honeywell International Inc.
    Inventors: Jussi Raasakka, Ondrej Kutik, Martin Orejas, Jakub Skalicky
  • Patent number: 9665753
    Abstract: A non-contact communication method determination circuit includes a determiner which determines whether or not a binary signal of a received radio signal is a binary signal of a radio signal with any of a plurality of first non-contact communication methods, wherein the determiner is configured to detect a time interval between edges of the binary signal, and compares the detected time interval with a predetermined time interval between edges of a binary signal in the plurality of first non-contact communication methods, so as to determine whether or not the binary signal of the received radio signal is the binary signal of the radio signal with any of the plurality of first non-contact communication methods, and the time interval between the edges of the binary signal is a time interval between falling edges of the binary signal.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: May 30, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventor: Masaharu Kawano
  • Patent number: 9635412
    Abstract: A dongle is configured to connect to a set top box. The dongle includes a memory for storing data, such as callback data files, and a wireless communication module for forwarding the stored data to an access point, for delivery to a television service provider head end. The dongle can also receive information to be provided to the set top box. Authentication and authorization of the dongle ensure only authenticated and authorized devices can access the system. A communication technology is used that allows for a large coverage area and simultaneous communication with many set top boxes.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: April 25, 2017
    Assignee: The DIRECTV Group, Inc.
    Inventor: Graciano Patino
  • Patent number: 9626630
    Abstract: A computing device determines one or more first degree correlations based on valuation information. The computing device determines one or more important variables based on at least a comparison between the absolute value of the one or more first degree correlations to a first threshold value. The computing device determines a valuation function based on at least one or more of the determined one or more important variables.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: April 18, 2017
    Assignee: International Business Machines Corporation
    Inventors: Vitaly Feldman, Jan Vondrak
  • Patent number: 9612339
    Abstract: A GNSS receiver configured to detect a presence of at least one GNSS satellite signal in a received signal is provided. The GNSS receiver includes a buffer loaded with sample sets corresponding to the received signal and a Doppler derotation block configured to perform a Doppler derotation corresponding to at least one Doppler frequency on a sample set received from the buffer. The GNSS receiver further includes an accumulator block configured to perform a coherent accumulation of a plurality of sample sets upon or subsequent to the Doppler derotation corresponding to a Doppler frequency, and, a first memory configured to store the results of the coherent accumulation. A register array is configured to be loaded with the results stored in the first memory and a correlator engine is configured to generate correlation results by correlating the results in the register array with a plurality of code phases of GNSS satellites.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: April 4, 2017
    Assignee: Texas Instruments Incorporated
    Inventors: Jasbir Singh Nayyar, Jawaharlal Tangudu, Aravind Ganesan
  • Patent number: 9612336
    Abstract: A method for detecting anomalies on satellite navigation signals consists in extracting the code error values delivered at the output of the N code discriminators, and comparing the extracted code error values with a same first threshold value corresponding to an acceptable maximum code error value and assigning a confidence index to each navigation signal received on each reception channel i, the confidence index depending on the result of the comparison carried out on the code error values.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: April 4, 2017
    Assignee: Thales
    Inventors: Damien Kubrak, Damien Serant
  • Patent number: 9584759
    Abstract: There is provided determination of a bit rate request (BRR) for a multimedia encoder of an electronic device. First bit rate information is received from a receiver of multimedia content. The multimedia content is generated by the multimedia encoder and transmitted by the electronic device on a transmission link of the electronic device to the receiver. The first bit rate information is related to the transmission link. Second bit rate information relating to a reception link of the electronic device is acquired. A set of properties of the transmission link and the reception link is determined. A combined BRR is determined for the multimedia encoder as a function of the first bit rate information and the second bit rate information, wherein the function depends on the set of properties. The combined BRR is provided to the multimedia encoder.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: February 28, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Fredrik Jansson, Erlendur Karlsson
  • Patent number: 9578447
    Abstract: A wireless communication system for demodulating data packets includes an interface circuit and a modem circuit. The interface circuit may receive a data packet, and the demodulator circuit may demodulate a first part of the data packet by dispreading only selected data bits in the data packet. The demodulator circuit may separately process at least a data payload portion of the data packet without dispreading.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: February 21, 2017
    Assignee: Apple Inc.
    Inventors: Clinton Powell, Kuor-Hsin Chang, Bing Xu
  • Patent number: 9571260
    Abstract: The embodiment of the invention discloses a channel estimation method for a TD-SCDMA system. The channel estimation method comprises steps of: obtaining a coarse channel estimation of a channel 1 of an intra-frequency cell set by a single cell channel estimation algorithm; performing an interference cancellation on the coarse channel estimation to obtain a channel estimation; determining a channel environment according to the channel estimation; and determining a stop strategy for the interference cancellation according to the channel environment and controlling performing the interference cancellation according to the stop strategy. The embodiment of the invention also discloses a channel estimation apparatus for a TD-SCDMA system, a communication device and a computer program executing the channel estimation method.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: February 14, 2017
    Assignee: OPTIS CIRCUIT TECHNOLOGY, LLC
    Inventors: Zhixun Tang, Xie Li, Liping Zhang
  • Patent number: 9482760
    Abstract: A method, receiver, and mobile terminal for simultaneously receiving and processing signals of multiple satellites from a plurality of navigational satellite system constellations are described. In the method, satellite signals from a plurality of navigational satellite systems are translated into an intermediate frequency and converted from analog to digital together, but then are separated out according to each navigational satellite system in the digital domain.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: November 1, 2016
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Gary Lennen
  • Patent number: 9484956
    Abstract: The invention relates to a method for correcting a message the generation of which involves transforming an initial message and inserting bit stuffing into the transformed message, which method comprises providing an observation sequence containing the message to be corrected. A number of path hypotheses are generated via a trellis diagram associated with the transformation. The nodes of the trellis diagram each represent a state of a finite-state machine capable of transforming the initial message and the branches represent the possible transitions between nodes. Among the branches of the trellis diagram, certain represent conditional transitions that may be made only when bit stuffing is present. During the generation of a path hypothesis, bit stuffing is detected and the branches taken are those associated with the detected bit stuffing. The most likely path hypothesis relative to the observation sequence is finally retained.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: November 1, 2016
    Assignee: CENTRE NATIONAL D'ETUDES SPATIALES ( C.N.E.S.)
    Inventors: Raoul Prevost, David Bonacci, Martial Coulon, Jean-Yves Tourneret, Julia Le Maitre, Jean-Pierre Millerioux