Having Correlation-type Receiver Patents (Class 375/142)
  • Patent number: 11089621
    Abstract: According to an embodiment of the present invention, a method is disclosed for transmitting a signal on the basis of a competition-based non-orthogonal multiple access scheme, by means of a terminal in a wireless communication system. At this time, the method for transmitting a signal comprises: a step of transmitting a first codeword on the basis of the competition-based NoMA scheme; a step of receiving a negative response to the first codeword transmission from a base station; a step of selecting a second codeword, taking into account a magnitude vector and a correlation of the first codeword; and a step of transmitting the selected second codeword on the basis of the competition-based NoMA scheme.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: August 10, 2021
    Assignee: LG Electronics Inc.
    Inventors: Myeongjin Kim, Sangrim Lee, Hojae Lee, Dongkyu Kim, Kwangseok Noh
  • Patent number: 11088722
    Abstract: Methods, systems, and apparatus for monitoring and controlling electronic devices using wired and wireless protocols are disclosed. The systems and apparatus may monitor their environment for signals from electronic devices. The systems and apparatus may take and disambiguate the signals that are received from the devices in their environment to identify the devices and associate control signals with the devices. The systems and apparatus may use communication means to send control signals to the identified electronic devices. Multiple apparatuses or systems may be connected together into networks, including mesh networks, to make for a more robust architecture.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: August 10, 2021
    Assignee: Crius Technology Group, LLC
    Inventor: Phillip Bogdanovich
  • Patent number: 11057868
    Abstract: A wireless transmit/receive unit (WTRU) receives radio resource assignment information over a physical downlink control channel. The WTRU determines whether the radio resource assignment information is intended for the WTRU based on WTRU identity-masked (ID-masked) cyclic redundancy check (CRC) bits. The WTRU determines whether the radio resource assignment information is for an uplink shared channel or a downlink shared channel. The WTRU utilizes the radio resource assignment information to transmit data over the uplink shared channel on a condition that the radio resource assignment information is determined to be for the uplink shared channel. The data is transmitted over the uplink shared channel a predetermined number of time slots after reception of the radio resource assignment information.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: July 6, 2021
    Assignee: InterDigital Technology Corporation
    Inventors: Marian Rudolf, Stephen G. Dick, Philip J. Pietraski
  • Patent number: 11047991
    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: December 4, 2019
    Date of Patent: June 29, 2021
    Assignee: NextNav, LLC
    Inventors: Arun Raghupathy, Norman F. Krasner
  • Patent number: 11029358
    Abstract: A noise source monitoring apparatus includes: a first storage unit storing captured image data; a second storage unit storing observed waveform data; a processing unit calculating, for each of the switch units, the degree of correlation between occurrence of a noise and operation of the switch unit, based on the captured image data and the observed waveform data; and a display control unit causing a display unit to display information indicating the degree of correlation.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: June 8, 2021
    Assignee: FANUC CORPORATION
    Inventors: Makine Yuyama, Tetsuro Matsudaira
  • Patent number: 11023390
    Abstract: Resizing circuitry comprises at least one buffer having buffer entries each corresponding to one of at least two shift registers, each shift register comprising storage circuits connected in a ring to transfer a token bit between storage circuits. Selection circuitry controls, based on the shift registers, writing of data sections of input data units having a first number of data sections to the buffer(s), to form output data units having a second number of data sections. For a given buffer entry corresponding to a given shift register, depending on whether the token bit is stored in a first or second subset of storage circuits, the selection circuitry controls writing of a selected data section of a received input data unit to the given buffer entry or prevents overwriting of the given buffer entry. At least two of the shift registers have different relative arrangements of the first and second subsets of storage circuits.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: June 1, 2021
    Assignee: Arm Limited
    Inventors: Eduard Vardanyan, Sean James Salisbury
  • Patent number: 10989801
    Abstract: A method of determining a distance from an object performed in an apparatus including a radar, the method including receiving a reflection signal produced by a transmission signal reflecting from the object, the transmission signal being modulated by a default code sequence; converting the reflection signal into a reflection code sequence; generating a subject correlation vector including at least one correlation between at least one assistance code sequence and the reflection code sequence; and determining a distance corresponding to the subject correlation vector by referencing a lookup table storing at least one reference correlation vector including at least one correlation between the at least one assistance code sequence and the default code sequence.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: April 27, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: SungDo Choi, DongHan Kim
  • Patent number: 10986590
    Abstract: Systems and methods are described for reducing processing time of messages that are repeatedly received, with increasing frequency, by a device (e.g., user equipment, base station etc.). For example, the systems and methods would have a mobile device increase power, possibly to maximum power-out, per policy, if messages beyond the original are received and the time between those messages is decreasing. The decrease in time between messages indicates a more urgent need for the mobile device to power up. The systems and methods can be adapted for different types of messages (e.g., power-up, power-down, resource request, bandwidth request, service type, call type origination, quality-of-service request, application type, etc.). Each message type is associated with a policy (pre-determined or adaptive) that indicates the default behavior when the method detects a decrease in time between messages.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: April 20, 2021
    Assignee: T-Mobile USA, Inc.
    Inventors: Scott Francis Migaldi, John Joseph Humbert, IV
  • Patent number: 10982982
    Abstract: A sensor controller for a sensor module includes at least one interface configured to obtain sensor information from the sensor module and to transmit a sensor signal to a sensor signal receiver. The sensor controller further includes a control module configured to control the interface. The sensor controller is further configured to obtain the sensor information from the sensor module. The sensor controller is further configured to generate the sensor signal based on the sensor information. The sensor controller is further configured to transmit the sensor signal to the sensor signal receiver. The sensor signal includes two signal edges indicating a pre-determined synchronization time interval. The sensor signal further includes at least one data signal portion located between the two signal edges.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: April 20, 2021
    Inventor: Dirk Hammerschmidt
  • Patent number: 10958308
    Abstract: Methods, systems, and apparatus for monitoring and controlling electronic devices using wired and wireless protocols are disclosed. The systems and apparatus may monitor their environment for signals from electronic devices. The systems and apparatus may take and disambiguate the signals that are received from the devices in their environment to identify the devices and associate control signals with the devices. The systems and apparatus may use communication means to send control signals to the identified electronic devices. Multiple apparatuses or systems may be connected together into networks, including mesh networks, to make for a more robust architecture.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: March 23, 2021
    Assignee: Chus Technology Group, LLC
    Inventor: Phillip Bogdanovich
  • Patent number: 10955435
    Abstract: A method of data calibration, and in particular sensor calibration, which involves gathering an initial first estimate and then binning the data samples, so that calibration can be performed without the need for a known reference stimulus. The present disclosure relates to calibration of vectors in a measurement system, and in particular to calibration of a correction function for systematic errors in successive data vectors. There is provided a method of determining a vector calibration function comprising: binning successive data vectors; and optimising the binned data vectors once data vectors allocated to a minimum number of unique bins have been observed. The method comprises establishing an initial calibration estimate and where the binning and optimising are performed based on said initial calibration estimate.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: March 23, 2021
    Assignee: Dialog Semiconductor B.V.
    Inventors: Wessel Lubberhuizen, Ashley Hughes
  • Patent number: 10879956
    Abstract: Methods, systems, and apparatus for monitoring and controlling electronic devices using wired and wireless protocols are disclosed. The systems and apparatus may monitor their environment for signals from electronic devices. The systems and apparatus may take and disambiguate the signals that are received from the devices in their environment to identify the devices and associate control signals with the devices. The systems and apparatus may use communication means to send control signals to the identified electronic devices. Multiple apparatuses or systems may be connected together into networks, including mesh networks, to make for a more robust architecture.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: December 29, 2020
    Assignee: Crius Technology Group, LLC
    Inventor: Phillip Bogdanovich
  • Patent number: 10834489
    Abstract: An electronic device mainboard includes a main body; an audio collecting component provided on the main body and configured to collect audio; a main controlling component provided on the main body, connected with the audio collecting component through a printed circuit printed on the main body and configured to receive and analyze the audio and then send out interaction instructions according to the audio; and an interaction component provided on the main body, connected with the main controlling component and configured to receive and execute the interaction instructions.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: November 10, 2020
    Assignees: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Shanghai Imilab Technology Co., Ltd.
    Inventors: Shoufeng Huang, Wang Liu, Hesong Wang, Li Zhang
  • Patent number: 10802158
    Abstract: Systems, methods and computer program products for determining extended coherent integration intervals based on information about user activity, dynamics and clock stability. Dynamically extending the coherent integration interval increases the signal-to-noise ratio during signal acquisition and tracking, thereby providing a benefit when antenna gain is poor, in weak signal conditions, and when being jammed, or when power needs to be conserved, compared to extending the coherent integration interval for a fixed amount of time.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: October 13, 2020
    Assignee: APPLE INC.
    Inventors: Brent M. Ledvina, Isaac Thomas Miller
  • Patent number: 10797920
    Abstract: System for generating a constant envelope and suppressed cyclic feature signal may include a transmission security (TRANSEC) function, a spread spectrum chip, an M-ary continuous phase modulator, and a pulse-shaped filter. The TRANSEC may generate a pseudorandom symbol by M-ary symbol generation selects a symbol with a signal phase, and the spread spectrum chip corresponding to the generated pseudorandom symbol or a phase rotation of the pseudorandom symbol. The M-ary continuous phase modulator with a delta-phase mapper maps the signal phase based at least in part on the selected symbol. The pulse-shaped filter of the M-ary modulator introduces inter-symbol interference from a previous and a subsequent symbol into a current symbol; the inter-symbol interference may be introduced by the main lobe of the signal phase being contained within a bandwidth of a chip rate of the spread spectrum chip for frequency modulation signal transmission of information by the generated signal.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: October 6, 2020
    Assignee: Rockwell Collins, Inc.
    Inventor: Carlos J. Chavez
  • Patent number: 10756776
    Abstract: A code acquisition module for a direct sequence spread spectrum (DSSS) receiver includes: a Sparse Discrete Fourier transform (SDFT) module configured to perform an SDFT on a finite number of non-uniformly distributed frequencies comprising a preamble of a received DSSS frame to calculate Fourier coefficients for the finite number of non-uniformly distributed frequencies; a multiplier configured to multiply the Fourier coefficients for the finite number of non-uniformly distributed frequencies of the received DSSS frame by complex conjugate Fourier coefficients for the finite number of non-uniformly distributed frequencies to generate a cross-correlation of the received DSSS frame and the complex conjugate Fourier coefficients; and a filter module configured to input the cross-correlation and output a delay estimation for the received DSSS frame.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: August 25, 2020
    Assignee: RAM Photonics, LLC
    Inventor: Vahid Ataie
  • Patent number: 10753979
    Abstract: The present disclosure provides a system, method, and apparatus for battery monitoring. In one or more embodiments, the disclosed method involves injecting at least one test signal into a battery, and receiving at least one response signal from the battery. In one or more embodiments, the response signal(s) comprises at least one reflected signal. The method further involves comparing, with at least one processor, the response signal(s) with at least one baseline signal to produce at least one comparison signal. Also, the method involves detecting, with at least one processor, at least one anomaly within the battery by using the comparison signal(s). Further, the method involves determining, with at least one processor, a location at least one anomaly within the battery by using the comparison signal(s).
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: August 25, 2020
    Assignee: The Boeing Company
    Inventors: Terrance L. Thomas, Lowell W. Schaffner, Mori M. Borumand
  • Patent number: 10748963
    Abstract: In fabricating a semiconductor device, a shared material is formed in a resonator region of the semiconductor device and in a phase-change material (PCM) switch region of the semiconductor device. A portion of the shared material is removed to concurrently form a heat spreader comprising the shared material in the PCM switch region and a piezoelectric segment comprising the shared material in the resonator region. The piezoelectric segment in the resonator region and the heat spreader in the PCM switch region are situated at substantially the same level in the semiconductor device. The PCM switch region includes a heating element between the heat spreader and a PCM. The resonator region includes the piezoelectric segment between two electrodes.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: August 18, 2020
    Assignee: Newport Fab, LLC
    Inventors: Gregory P. Slovin, Nabil El-Hinnawy, Jefferson E. Rose, David J. Howard
  • Patent number: 10651887
    Abstract: Provided are multiuser communication methods and devices for Code Division Multiple Access (CDMA). N modulated symbols which are obtained by modulating a code block coded by a channel coder are acquired, where N is a positive integer more than or equal to 2. The N modulated symbols are spread according to N spread sequences with a specified length, and there may be at least two different spread sequences in the N spread sequences with the specified length. The spread modulated symbols are transmitted.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: May 12, 2020
    Assignee: XI'AN ZHONGXING NEW SOFTWARE CO., LTD.
    Inventors: Zhifeng Yuan, Weimin Li
  • Patent number: 10615788
    Abstract: A protective circuit includes a first capacitance element and a second capacitance element. A first capacitance value of the first capacitance element increases with an increase in a voltage applied to a first terminal of a circuit element. The second capacitance element is connected in series with the first capacitance element between the first terminal and a second terminal which is a reference potential terminal. The second capacitance element has a second fixed capacitance value which is larger than the first capacitance value until the voltage reaches a first value. The second capacitance element has a breakdown voltage characteristic higher than a breakdown voltage characteristic of the circuit element.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: April 7, 2020
    Assignee: FUJITSU LIMITED
    Inventor: Tatsuya Hirose
  • Patent number: 10601459
    Abstract: Doppler correlators are configured to receive samples of a signal sampled based on a frequency. Each Doppler correlator includes successive butterfly elements. Each butterfly element includes cross-coupled first and second branches that include a sample delay that doubles for each successive butterfly element, and a sample inversion selectively placed in one of the first and second branches to encode into the successive butterfly elements of each Doppler correlator the same code sequence. Each Doppler correlator is configured with a respective phase rotation that varies across the Doppler correlators.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: March 24, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Knut Inge Hvidsten, Michael A. Ramalho, Ragnvald Balch Barth
  • Patent number: 10488525
    Abstract: A method for demodulating and tracking of CSK-modulated signals comprising the steps of receiving a CSK-modulated signal at a plurality of correlators, the CSK-modulated signal including a transmitted symbol; convolving the CSK-modulated signal with a preset reference replica of the CSK-modulated signal for N shifts (D1 . . . DN) of a PRN code relative to an internal receiver clock corresponding to N possible code shifts in the transmitted symbol, and M other code shifts (T1 . . . TM), where M<N, that satisfies D1??T?Ti?DN+?T for all Ti from (T1 . . . TM); selecting one of the N shifts (DMAX) where the convolution is a maximum; adjusting a CSK-signal Delay Locked Loop (DLL) based on a ratio of convolution values for the shifts DMAX and Ti for all Ti for which a modulus |DMAX?Ti| is smaller than a predefined threshold; and determining a value of the transmitted symbol based on DMAX.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: November 26, 2019
    Assignee: Topcon Positioning Systems, Inc.
    Inventors: Andrey Vladimirovich Veitsel, Leonid Victorovich Purto, Alexey Stanislavovich Lebedinsky, Dmitry Anatolievich Rubtsov
  • Patent number: 10447518
    Abstract: Aspects of the present disclosure provide a scheme for generating a multiple access (MA) signal that include mapping each of at least one stream of bits to generate a set of modulated symbols and transmitting the set of modulated symbols. The spreading signatures that are selected to map the at least one stream of bits are selected, at least in part, based on a set of compatibility rules. The spreading involves mapping each stream of bits using a respective spreading signature from a set of spreading signatures to generate a respective set of modulated symbols, wherein real spreading signature components of the spreading signatures are orthogonal to each other and imaginary spreading signature components of the spreading signatures are orthogonal to each other.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: October 15, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Alireza Bayesteh, Ming Jia, Sanjeewa Herath, Jianglei Ma
  • Patent number: 10425891
    Abstract: Power management for a remote antenna unit(s) (RAUs) in a distributed antenna system. Power can be managed for an RAU configured to power modules and devices that may require more power to operate than power available to the RAU. For example, the RAU may be configured to include power-consuming RAU modules to provide distributed antenna system-related services. As another example, the RAU may be configured to provide power through powered ports in the RAU to power-consuming devices. Depending on the configuration of the RAU, the power-consuming RAU modules and/or power-consuming devices may demand more power than is available at the RAU. In this instance, the power available at the RAU can be distributed to the power-consuming modules and devices based on the priority of services desired to be provided by the RAU.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: September 24, 2019
    Assignee: Corning Optical Communications LLC
    Inventors: Christian Heidler, Jonathan Richard Hull, Jessica Joy Kedziora, Michael Sauer, Wolfgang Gottfried Tobias Schweiker
  • Patent number: 10382160
    Abstract: The present invention provides a jamming device for jamming a frequency hopping signal, the jamming device comprising at least one receiving antenna configured to receive signals in the signal spectrum of the frequency hopping signal, an emission detection unit configured to detect emissions in the received signals that possibly pertain to the frequency hopping signal, a signal analysis unit configured to analyze the detected emissions for determining characteristic properties of the frequency hopping signal in an analysis mode and configured to output corresponding jamming trigger signals in an active jamming mode if detected emissions pertain to the frequency hopping signal, and a signal jamming unit configured to jam in the active jamming mode the relevant emissions with a predictive jamming scheme based on the jamming trigger signals if the jamming trigger signals are available and based on a reactive jamming scheme or a barrage jamming scheme if the jamming trigger signals are not available.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: August 13, 2019
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Jens Kühne, Thomas Schmid
  • Patent number: 10256932
    Abstract: Example communication systems and methods are described. In one implementation, a method receives a first chaotic sequence of a first temporal length, and a second chaotic sequence of a second temporal length. The method also receives a data symbol for communication to a destination. Based on the data symbol, the second chaotic sequence is temporally shifted and combined with the first chaotic sequence to generate a composite chaotic sequence. The first chaotic sequence functions as a reference chaotic sequence while the second chaotic sequence functions as a data-carrying auxiliary chaotic sequence.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: April 9, 2019
    Assignee: ASHREM TECHNOLOGIES, INC.
    Inventor: Ashitosh Swarup
  • Patent number: 10237835
    Abstract: Systems and methods are described for reducing processing time of messages that are repeatedly received, with increasing frequency, by a device (e.g., user equipment, base station etc.). For example, the systems and methods would have a mobile device increase power, possibly to maximum power-out, per policy, if messages beyond the original are received and the time between those messages is decreasing. The decrease in time between messages indicates a more urgent need for the mobile device to power up. The systems and methods can be adapted for different types of messages (e.g., power-up, power-down, resource request, bandwidth request, service type, call type origination, quality-of-service request, application type, etc.). Each message type is associated with a policy (pre-determined or adaptive) that indicates the default behavior when the method detects a decrease in time between messages.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: March 19, 2019
    Assignee: T-Mobile USA, Inc.
    Inventors: Scott Francis Migaldi, John Joseph Humbert, IV
  • Patent number: 10205555
    Abstract: A method and devices are provided. The method includes transmitting, by a first base station, a superposition of a codeword of first information and a codeword of second information to N terminals, where the first information and the second information correspond to each terminal of the N terminals, and N is a positive integer; and a codeword of first information corresponding to the rth terminal is obtained according to a transmit rate and a transmit power for the codeword of the first information corresponding to the rth terminal, a codeword of second information corresponding to the rth terminal is obtained according to a transmit rate and a transmit power for the codeword of the second information corresponding to the rth terminal, the transmit rate for the codeword of the first information corresponding to the rth terminal meets a first condition.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: February 12, 2019
    Assignee: Huawei Technologies Co., Ltd
    Inventor: Xuesong Wang
  • Patent number: 10200982
    Abstract: Systems and methods to encode and/or decode structured super-position coding to enhance control channel capacity are disclosed herein. User equipment (UE) may be configured to communicatively couple to an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (eNB). A first UE and a second UE may be coupled to the eNB. Basic PDCCH may be sent to the second UE, and extra PDCCH may be sent to the first UE on the same time-frequency resource. The second UE may be able to decode the basic PDCCH as it normally does. The first UE may be able to decode the basic PDCCH for the second UE, cancel the basic PDCCH from the signal, and decode the extra PDCCH. The extra PDCCH may be restricted to certain positions relative to the basic PDCCH to simplify searching by the first UE.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: February 5, 2019
    Assignee: INTEL CORPORATION
    Inventors: Feng Xue, Jong-Kae Fwu, Hwan-Joon Kwon
  • Patent number: 10178699
    Abstract: Various aspects described herein relate to techniques for random access based on scalable signature design in wireless communications systems. A method, a computer-readable medium, and an apparatus are provided. In an aspect, the method may include randomly choosing an array of source symbols, wherein the array has one or more scalable dimensions based on at least one of a capacity requirement or a coverage requirement of a random access channel (RACH), encoding the array of source symbols into a codeword for a RACH signature, mapping the codeword to a serial concatenation of orthogonal or quasi-orthogonal sequences to define the RACH signature, and transmitting the RACH signature within a RACH slot. The techniques described herein may apply to different communications technologies, including 5th Generation (5G) New Radio (NR) communications technology.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: January 8, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Jing Lei, Hao Xu
  • Patent number: 10091667
    Abstract: A policy engine receives monitor information indicating operating conditions of both a wireless network and corresponding communication link. Multiple communication devices share the wireless network to communicate with a wireless access point. The wireless access point is in communication with a remote network such as the Internet through the corresponding communication link. To control end-to-end communications between the communication devices and the remote network, the policy engine produces policy information based on the received monitor information. The policy engine or other suitable resource initiates execution of the policy to control subsequent conveyance of communications over a combination of: i) the wireless network, and ii) the corresponding communication link.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: October 2, 2018
    Assignee: Time Warner Cable Enterprises LLC
    Inventors: Kiran R. Yeddala, Don Gunasekara, Ahmed Bencheikh
  • Patent number: 10080071
    Abstract: A central node for digital subscriber line access multiplex.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: September 18, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Per-Erik Eriksson, Miguel Berg, Chenguang Lu, Elmar Trojer
  • Patent number: 10018731
    Abstract: A processor for a radio receiver is adapted to process direct sequence spread spectrum (DS-SS signals), and includes a demodulator, digitizer, correlator, and chip-matched filter (CMF) wherein the digitizer sample rate is selected to take a plurality of samples of each incoming chip at differing points thereon compared to sample points on an adjacent chip and to sample the chip at a non-integer multiple of the chip rate, wherein the CMF is arranged to filter the output of the digitizer. A sample selection unit is arranged to select a single sample from the CMF for input to each tap of the correlator, the selected sample being chosen as that nearest in time to a desired ideal time in relation to a timing reference point on the chip. An improved correlation function results, leading to better tracking performance.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: July 10, 2018
    Assignee: QINETIQ LIMITED
    Inventor: Malcolm MacLeod
  • Patent number: 9985812
    Abstract: Generally, in accordance with the various illustrative embodiments disclosed herein, an RF receiver can include an error correction system that executes a signal processing procedure upon a multi-tone digital I-signal and a multi-tone digital Q-signal to derive a wideband correction matrix. The wideband correction matrix can be used to correct one or more of: an amplitude error in any one or more frequency components of an RF input signal provided to the RF receiver, a phase error in any one or more frequency components of the RF input signal, a gain mismatch error between an analog I-signal circuit portion of the RF receiver and an analog Q-signal circuit portion of the RF receiver, or a phase mismatch error between the analog I-signal circuit portion of the RF receiver and the analog Q-signal circuit portion of the RF receiver.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: May 29, 2018
    Assignee: Keysight Technologies, Inc.
    Inventor: Reinhold Frederick Hollender
  • Patent number: 9954563
    Abstract: According to one or more exemplary embodiments, a receiver comprises one or more first metamaterial circuit elements configured to receive a signal; one or more second metamaterial circuit elements configured to perform a hermetic transform on the signal to output a hermetic transform output; and one or more third metamaterial circuit elements configured to perform a summation on the hermetic transform output. Additionally, according to one or more exemplary embodiments, a transmitter comprises a metamaterial waveguide configured to guide a signal and allow the signal to exit the metamaterial waveguide; one or more first metamaterial circuit elements coupled to the metamaterial waveguide and configured to perform a hermetic transform on the signal; and one or more second metamaterial elements configured to transmit the signal.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: April 24, 2018
    Assignee: VertoCOMM, Inc.
    Inventor: Harvey C. Woodsum
  • Patent number: 9831909
    Abstract: A method of operating a transmitter (FIGS. 3A and 5A) is disclosed. The method includes receiving a sequence of data bits (DATA), wherein each data bit has a respective sequence number. A first data bit of the sequence is spread (508) with a first spreading code (504) determined by the sequence number (502) of the first data bit. A second data bit of the sequence is spread (508) with an inverse of the first spreading code (506) determined by the sequence number (502) of the second data bit. The first and second data bits are modulated (510) and transmitted (516) to a remote receiver.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: November 28, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Timothy Mark Schmidl, Anand G. Dabak
  • Patent number: 9780921
    Abstract: A receiver receives packets without prior knowledge of their bandwidths. The receiver calculates a first auto-correlation function for a first channel, a second auto-correlation function for a second channel, and a dot product of the first auto-correlation function and the second auto-correlation function. A packet is detected and its bandwidth classified based at least in part on the dot product.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: October 3, 2017
    Assignee: QUALLCOMM Incorporated
    Inventors: Peter Zillmann, Christoph Arnold Joetten, Christian Pietsch, Nicola Varanese
  • Patent number: 9781730
    Abstract: In a broadband wireless communication system, a primary control signal may be relocated within the operation band for transmission while avoiding interference. For example, if the primary control signal employs P contiguous subcarriers, the primary control signal can be placed in any section of the band that has P contiguous subcarriers. If a narrow-band interferer appears at one end of the band, the primary control signals can be placed at the other end. If the interferer appears in the middle, the primary can be relocated to either end of the band. The placement of primary control signals can be changed as the interference environment changes.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: October 3, 2017
    Assignee: Neocific, Inc.
    Inventors: Titus Lo, Xiaodong Li
  • Patent number: 9767954
    Abstract: Provided are a method and apparatus for wirelessly transmitting energy. A wireless energy transmitter may perform sampling to obtain first samples from an alternating current (AC) signal that is induced at an energy transmission (TX) end, and may correct symbol synchronization based on a difference between a sum of absolute values of the first samples and a sum of absolute values of second samples sampled during a symbol interval in which synchronization matching is performed between a switch of the energy TX end and a switch of the energy RX end.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: September 19, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang Joon Kim, Ui Kun Kwon, Seungkeun Yoon
  • Patent number: 9723496
    Abstract: In order to cancel any interference due to the second signal (e.g., from a non-serving cell) from a signal received at a UE, without receiving additional control information, the UE blindly estimates parameters associated with decoding the second signal. This may include determining a metric based on sets of symbols associated with the signals in order to determine parameters for the second signal, e.g., the transmission mode, modulation format, and/or spatial scheme of the second signal. The parameters for the signal may be determined based on a comparison of the metric with a threshold. When a spatial scheme and a modulation format is unknown, the blind estimation may include determining a plurality of constellations of possible transmitted modulated symbols associated with a potential spatial scheme and modulation format combination. Interference cancellation can be performed using the constellations and a corresponding probability weight.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: August 1, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Taesang Yoo, Hendrik Schoeneich, Tao Luo, Yongbin Wei, Myriam Rajih, Durga Prasad Malladi
  • Patent number: 9608718
    Abstract: A method and apparatus are provided for demodulating a received signal containing modulated desired-signal digital data and relayed-interference that results from a nonlinear-distorted interference signal. Estimation of the nonlinear-distorted interference from a pre-distortion interference signal and subsequent cancellation within the received signal of the distorted interference produces a residual-interference signal that is subsequently demodulated to produce estimates of the desired-signal data. The estimation is adapted for changing nonlinear distortion effects.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: March 28, 2017
    Inventors: Peter Monsen, Richard Hollingsworth Cannon
  • Patent number: 9584243
    Abstract: Methods, systems, and devices are described for orthogonal modulation of signals using maximal length sequences and Hadamard transforms. Modulation symbols to be transmitted are arranged into sequences indexed from 1 to 2n?1 for some integer n. A constant is added to the beginning of each sequence, which is then multiplied by a Hadamard matrix of size 2n×2n. The resulting sequences will be orthogonal and will have a first value of zero. The first value is discarded, and the sequence are reordered and associated with m-sequences. The signal is then transmitted. A cyclic prefix may also be transmitted. Upon receiving the transmission, a receiver may discard the cyclic prefix or use it for channel equalization. The receiver may then reorder the received signal, insert a zero, apply the 2n×2n Hadamard transform, discard the zero, and order the sequences again according to the index to retrieve the data.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: February 28, 2017
    Assignee: QUALCOMM Incorporated
    Inventor: Roy Franklin Quick, Jr.
  • Patent number: 9564963
    Abstract: A receiver receives signals and noise over a frequency spectrum of a desired received signal. The desired received signal is spread using code division multiple access. The received signals and noise are demodulated to produce a demodulated signal. The demodulated signal is despread using a code uncorrelated with a code associated with the desired received signal. A power level of the despread demodulated signal is measured as an estimate of the noise level of the frequency spectrum.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: February 7, 2017
    Assignee: InterDigital Technology Corporation
    Inventors: Gary R. Lomp, Faith M. Ozluturk, John Kowalski
  • Patent number: 9525574
    Abstract: Methods and apparatus for transmitting data at a varying effective data rate (EDR) at a constant baud rate by encoding the data prior to transmission with a sequence. In embodiments, the sequence comprises a pseudo random number sequence, Barker sequence, and/or other sequence. Embodiments of a receiver decode the data transmitted at a varying effective data rate (EDR) at a constant baud rate by encoding the data prior to transmission with a sequence.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: December 20, 2016
    Assignee: Raytheon Company
    Inventors: Gary M. Graceffo, Andrew Kowalevicz
  • Patent number: 9519073
    Abstract: In some embodiments, apparatus and systems, as well as methods, may operate to shift signal data associated with a set of receivers, in time or phase with respect to signal data associated with a receiver reference point, to transform the signal data into shifted data, wherein the signal data corresponds to energy waves propagated through a geological formation before being received by the set of receivers; to multiply the shifted data by a complex conjugate of the signal data associated with the receiver reference point to provide differential phase values; to sum and average the differential phase values to provide differential phase semblance values; and to publish the differential phase semblance values, or information derived from the differential phase semblance values to one of a storage medium, a hardcopy printout, or a display. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: December 13, 2016
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Pradip Kumar Mukhopadhyay, Arthur Cheng
  • Patent number: 9515719
    Abstract: In a radio communication system a first radio station performs communication by the use of a first radio signal. A second radio station receives a second radio signal which is indistinguishable from the first radio signal. A third radio station is in a radio communication area of the first radio station and a radio communication area of the second radio station. A communication format conversion unit generates a third radio signal by converting a communication format of the second radio signal to a communication format which is distinguishable from the first radio signal, and communicates with the third radio station by the use of the third radio signal.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: December 6, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Takayoshi Ode, Kazuhisa Obuchi
  • Patent number: 9515716
    Abstract: A method for providing precoding weights for data symbols of data control subframes includes generating a downlink frame having control subframes which individually correspond to one of a plurality of downlink data subframes, and inserting weight information into each of the control subframes, such that the weight information is to be applied to data symbols present in the corresponding one of the data subframes. The method further includes transmitting the control subframes and the inserted weight information to a receiving device.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: December 6, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Dong Youn Seo, Bong Hoe Kim, Young Woo Yun, Ki Jun Kim, Jung Hoon Lee, Eun Sun Kim, Hak Seong Kim, Suk Hyon Yoon, Joon Kui Ahn
  • Patent number: 9515720
    Abstract: In a radio communication system a first radio station performs communication by the use of a first radio signal. A second radio station receives a second radio signal which is indistinguishable from the first radio signal. A third radio station is in a radio communication area of the first radio station and a radio communication area of the second radio station. A communication format conversion unit generates a third radio signal by converting a communication format of the second radio signal to a communication format which is distinguishable from the first radio signal, and communicates with the third radio station by the use of the third radio signal.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: December 6, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Takayoshi Ode, Kazuhisa Obuchi
  • Patent number: 9490750
    Abstract: A system and method are provided for extracting and demodulating one or more channels in a radio signal. The method includes receiving a first radio signal using a radio frequency front end, translating a first band of frequencies of the first radio signal to a second band of frequencies to generate a second radio signal, digitizing the second radio signal to generate a digital signal, extracting one or more additional band of frequencies of the digital signal, each additional band of frequencies corresponding to a channel, and demodulating one or more channels to generate a respective demodulated signal. In another aspect, a system and method are provided for modulating and combining one or more channels into a radio signal.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: November 8, 2016
    Assignee: Per Vices Corporation
    Inventors: Victor Wollesen, Yi Yao
  • Patent number: 9465063
    Abstract: A method and system for the estimation and correction of the multipath delay is described. The method comprising analyzing the distortion of the autocorrelation function of each single impulse received with that of an ideal impulse, deriving back the variation of the impulse parameters and estimating the effect of the multipart to be taken into account for compensation on the estimation of the time of arrival (TOA) of the electromagnetic signal.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: October 11, 2016
    Assignee: SELES ES S.P.A.
    Inventors: Patrizio De Marco, Antonio Di Marzo