Correlation-type Receiver Patents (Class 375/150)
  • Patent number: 11894869
    Abstract: The subject of this disclosure is applying improved techniques to media signal communication as well as control and status exchange to implement a diversity of media interfaces, achieving suitable media communication results despite EM propagation challenges.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: February 6, 2024
    Assignee: HYPHY USA INC.
    Inventors: Robert Steven Hannebauer, Todd Elliot Rockoff
  • Patent number: 11888579
    Abstract: Provided are a base station device and a mobile station device, which can lighten a cell-search processing. The base station device includes a frame constitution unit for forming a frame, in which a pilot symbol multiplied by a base station scrambling code and a plurality of sequences contained in the corresponding sequence set is arranged in at least the head or tail, and a radio transmission unit for sending the formed frame. On the receiving side, the frame timing can be detected from the position of a pilot symbol contained in that frame. Since the base station scrambling code and the sequence set containing the sequences are made to correspond to each other, candidates can be narrowed to at most the base station scrambling codes of the number of the combinations of the sequences contained in the sequence set, by detecting the sequences multiplied by the pilot symbol.
    Type: Grant
    Filed: January 12, 2023
    Date of Patent: January 30, 2024
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Katsuyoshi Naka, Hiroki Haga, Hidenori Matsuo
  • Patent number: 11863284
    Abstract: Embodiments of systems and methods for combining downlink signals representative of a communication signal are provided herein. An example method comprises receiving samples of the downlink signals from multiple antenna feeds; generating first symbols for a first signal and second symbols for a second signal based on performing timing recovery operations on the first signal and the second signal, respectively; generating offset information based on performing a correlator operation on the first and second symbols; and combining the first and second signals based on performing a weighted combiner operation. At least one of the first timing recovery operation, the second timing recovery operation, the correlator operation, and the combing are performed in a plurality of processing blocks in one or more processors, wherein the first and second processing block operate in parallel.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: January 2, 2024
    Assignee: KRATOS INTEGRAL HOLDINGS, LLC
    Inventors: Jeffrey David Jarriel, Daniel Joseph Sutton, Matthew James Stoltenberg, Brandon Gregory King
  • Patent number: 11863250
    Abstract: A satellite communications system can comprise at least one that satellite, an antenna structure deployed on the at least one satellite, and radio hardware coupled to the antenna structure that can provide for transmitting a first channel simultaneously with a second channel, wherein the first channel is transmitted using directive beams and the second channel is transmitted using a wide beam and wherein the directive beams are for data communication signals and the wide beam is for navigation signals.
    Type: Grant
    Filed: January 6, 2022
    Date of Patent: January 2, 2024
    Assignee: Lynk Global, Inc.
    Inventor: Tyghe Robert Speidel
  • Patent number: 11855761
    Abstract: A signaling-type method for mobile phone signals, comprising: establishing a shielding processing system, and ensuring that the frequency reference of said system is synchronized with that of a base station; using the feature that a frame signal of a base station is repeatedly transmitted according to a frame period of the base station, receiving the frame signal of the base station at different times; performing filtering processing on the frame signals of the base station using a frame averaging method, so as to obtain purified frame reference signals of the base station; and using the purified frame reference signals to shield the base station.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: December 26, 2023
    Assignee: ZHEJIANG SUNWAVE COMMUNICATIONS TECHNOLOGY CO., LTD.
    Inventors: Xingbao Ou, Yongfu Cao, Jianfeng Yang, Yongchao Yuan
  • Patent number: 11842706
    Abstract: A source driver is provided, including a first data receiving part that receives a serial data signal via the first transmission line, a selector that outputs a serial data signal from either the first transmission line or the second transmission line according to a switching signal, a second data receiving part that receives the serial data signal output from the selector, a first serial-parallel conversion circuit that serial-parallel converts the serial data signal received by the first data receiving part and outputs the converted signal as first parallel data, a second serial-parallel conversion circuit that serial-parallel converts the serial data signal received by the second data receiving part and outputs the converted signal as second parallel data, and a comparison circuit that compares the first parallel data with the second parallel data and outputs a comparison result when the selector outputs the serial data signal from the first transmission line.
    Type: Grant
    Filed: March 13, 2022
    Date of Patent: December 12, 2023
    Assignee: LAPIS Technology Co., Ltd.
    Inventor: Hiroaki Ishii
  • Patent number: 11828858
    Abstract: Sets of digital samples associated with received wireless signals are received, each of the sets of digital samples corresponding to a particular RF path. The sets of digital samples are provided to a plurality of pipelines, each of the plurality of pipelines including a plurality of stages, each of the plurality of stages including one or more digital logic circuits. Sets of interconnect data are generated by the plurality of pipelines based on the sets of digital samples, the sets of interconnect data including at least one accumulating value. The sets of interconnect data are passed between adjacent pipelines of the plurality of pipelines along a direction. A result is generated by a last pipeline of the plurality of pipelines based on the at least one accumulating value.
    Type: Grant
    Filed: October 6, 2022
    Date of Patent: November 28, 2023
    Assignee: Trimble Inc.
    Inventors: Andrey Bacherov, Charles Manning
  • Patent number: 11821993
    Abstract: Global navigation satellite systems and methods use L5 GNSS signals to acquire secondary code phases of those signals without using L1 GNSS signals to aid in the acquisition of secondary code phases. Various embodiments are described to perform this acquisition.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: November 21, 2023
    Assignee: ONENAV, INC.
    Inventors: Paul McBurney, Nagaraj Shivaramaiah, Norman Krasner, Paul A. Conflitti, Mark Moeglein
  • Patent number: 11821990
    Abstract: Embodiments of the present disclosure are directed to providing scene perception display requiring reduced processing capabilities. Sensor data indicative of one or more targets from an imaging and ranging subsystem, location data from a positioning subsystem defining a geographical location of the imaging and ranging subsystem and orientation data from an orientation subsystem defining an orientation of the imaging and ranging subsystem are received. Doppler point cloud data is generated based on Doppler information and point cloud data from the sensor data, the location data and the orientation data. The targets are classified as either a static or dynamic target. Afterwards, the Doppler point cloud data is filtered by removing either the dynamic or the static targets from the Doppler point cloud data. The Doppler point cloud data of either the dynamic or the static targets are further processed and the further processed Doppler point cloud data is rendered.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: November 21, 2023
    Assignee: NIO Technology (Anhui) Co., Ltd.
    Inventors: Xu Chen, Tong Lin, Zhenxiang Jian, Hiu Hong Yu
  • Patent number: 11804947
    Abstract: A radio apparatus correlates signal data with stored synchronization data to determine correlation data. The signal data represents a received radio-frequency signal that encodes a data frame, which has a synchronization preamble with a plurality of instances of a predetermined synchronization sequence. The stored synchronization data represents the predetermined synchronization sequence. The radio apparatus identifies a set of peaks in the correlation data, and uses a timing criterion to identify a plurality of subsets of the set of peaks, such that time values of the peaks of each identified subset satisfy the timing criterion. The radio apparatus calculates a correlation score Cj for each of the identified subsets from correlation values of the subset's peaks, and uses the correlation scores Cj to select a subset from the plurality of subsets. Timing or frequency synchronization information for the radio apparatus is determined from the peaks of the selected subset.
    Type: Grant
    Filed: May 3, 2022
    Date of Patent: October 31, 2023
    Assignee: Nordic Semiconductor ASA
    Inventor: Sverre Wichlund
  • Patent number: 11789897
    Abstract: A data processing circuit, a data processing method, and an electronic device are provided. The data processing circuit includes a first data processing sub-circuit and a second data processing sub-circuit. An output terminal of the first data processing sub-circuit is connected to an input terminal of the second data processing sub-circuit. The first data processing sub-circuit is configured to receive an original sequence to generate a first processed sequence. Each of first processed numbers in the first processed sequence is calculated from at least two pieces of original data in the original data. The second data processing sub-circuit is configured to receive the first processed sequence to generate a second processed sequence.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: October 17, 2023
    Assignees: BOE TECHNOLOGY DEVELOPMENT CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiangye Wei, Liming Xiu
  • Patent number: 11789158
    Abstract: A tones processing system including an interference tone determination module (ITDM), an interference tone tracker module (ITTM) and an interference tone removal module (ITRM) is provided. The ITDM sequentially searches for one or more continuous wave interference (CWI) tones in N samples of intermediate frequency (IF) data within a programmable signal frequency band. The ITTM tracks the detected CWI tones. The ITRM removes the tracked CWI tones from the N samples of IF data using one or more interference tone removal units (ITRUs). Each of the ITRUs includes a second signal generator, a second mixer, a tone filter for suppressing the tracked CWI tones, and a quantizer for reducing the number of processing bits in a tone suppressed output signal. The ITRM performs frequency shift compensation and phase rotation compensation with reduced logic area and power consumption in the global navigation satellite system, receiver.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: October 17, 2023
    Assignee: ACCORD IDEATION PRIVATE LIMITED
    Inventors: Gowdayyanadoddi Shivaiah Naveen, Vikram Kudligi Hiramat, Rajashekaran Chinnadurai, Manjeeth Thattam Kandiyil, Mahesh Kumar
  • Patent number: 11789159
    Abstract: A tones processing system including an interference tone determination module (ITDM), an interference tone tracker module (ITTM) and an interference tone removal module (ITRM) is provided. The ITDM sequentially searches for one or more continuous wave interference (CWI) tones in N samples of intermediate frequency (IF) data within a programmable signal frequency band. The ITTM tracks the detected CWI tones. The ITRM removes the tracked CWI tones from the N samples of IF data using one or more interference tone removal units (ITRUs). Each of the ITRUs includes a second signal generator, a second mixer, a tone filter for suppressing the tracked CWI tones, and a quantizer for reducing the number of processing bits in a tone suppressed output signal. The ITRM performs frequency shift compensation and phase rotation compensation with reduced logic area and power consumption in the global navigation satellite system, receiver.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: October 17, 2023
    Assignee: ACCORD IDEATION PRIVATE LIMITED
    Inventors: Gowdayyanadoddi Shivaiah Naveen, Vikram Kudligi Hiramat, Rajashekaran Chinnadurai, Manjeeth Thattam Kandiyil, Mahesh Kumar
  • Patent number: 11784709
    Abstract: A method and a receiver device for detecting the start of a frame of a satellite communication signal. A shaping filtering is applied directly after sampling of the signal, before a frequency correction is applied. During a first phase, an approximate frequency error and a candidate first sample for the start of the frame are estimated by performing several correlations respectively associated with different frequency hypotheses. The samples obtained after sampling or after shaping filtering are buffered during the execution of the first phase. Then, during a second phase, a final candidate sample for the start of the frame is determined from the memorised samples, using the approximate frequency error and the candidate first sample estimated during the first phase.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: October 10, 2023
    Assignee: AIRBUS DEFENCE AND SPACE SAS
    Inventors: Lyonel Barthe, Benjamin Gadat
  • Patent number: 11777549
    Abstract: Radio frequency front end modules implementing coexisting time division duplexing and frequency division duplexing are provided. In one aspect, a front end system includes a time-division duplexing transmit terminal, a time-division duplexing receive terminal, a frequency division duplexing terminal, and an antenna terminal. The front end system further includes first, second, and third switches configured to selectively connect the terminals to either a node or the antenna. The front end system also includes a controller configured to provide delays between disconnecting the terminals from the antenna and connecting the terminals to the node.
    Type: Grant
    Filed: February 3, 2022
    Date of Patent: October 3, 2023
    Inventors: Joshua Haeseok Cho, Stephane Richard Marie Wloczysiak, Thomas Obkircher, Junhyung Lee, Rimal Deep Singh, Bipul Agarwal
  • Patent number: 11757473
    Abstract: A method of telecommunications includes the steps of receiving an encoded block having a plurality of values, dividing the received encoded block into a plurality of received segments, each received segment comprising at least two of the values, decoding each received segment by providing, for each received segment, a plurality of estimated encoded sequences, each estimated encoded sequence comprising at least two data units, merging estimated encoded sequences for consecutive segments to provide a plurality of candidate sequences, and selecting one of the plurality of candidate sequences by performing a closest fit calculation between the received encoded data block and each of the candidate sequences. The method is suitable for use in software-defined radios.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: September 12, 2023
    Assignee: Airbus Defence and Space Limited
    Inventors: Jinfei Wang, Terence Dodgson, Yi Ma, Songyan Xue
  • Patent number: 11754723
    Abstract: An apparatus control method includes: controlling a first frequency band receive chain, of an apparatus, to alternate being on and off with a first duty cycle, the first frequency band receive chain being configured to measure satellite signals within a first frequency band; determining one or more performance criteria; and controlling, based on the one or more performance criteria, a second frequency band receive chain, of the apparatus, to alternate being on and off with a second duty cycle, the second frequency band receive chain being configured to measure satellite signals within a second frequency band.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: September 12, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Deepika Srinivasan, Krishnaranjan Rao, Jeffrey Wong, Jordan Cookman
  • Patent number: 11750256
    Abstract: Disclosed herein are methods and apparatuses configured to direct wireless communication. In some embodiments, a networking apparatus is configured to generate a plurality of sequences of symbols for transmission to plurality of client devices; transmit the plurality of sequences to the plurality of client device via one or more beams focused toward the client devices; and transmit the first sequence of symbols and the second sequence of symbols at least partly simultaneously.
    Type: Grant
    Filed: March 20, 2023
    Date of Patent: September 5, 2023
    Assignee: XR Communications LLC
    Inventors: Marcus Da Silva, William J. Crilly, Jr., James Brennan, Robert J. Conley, Siavash Alamouti, Eduardo Casas, Hujun Yin, Bobby Jose, Yang-Seok Choi, Vahid Tarokh, Praveen Mehrotra
  • Patent number: 11726200
    Abstract: A direct line-of-sight (DLOS) radio frequency (RF) signal component and a reflected RF signal component of an RF carrier signal are received from a transmitter. The reflected component is reflected from a point on the surface of the earth. The DLOS component is converted to a digital DLOS intermediate frequency (IF) signal and the reflected component that is converted to a digital reflected IF signal. Modeled reference signal parameters are generated using the digital DLOS IF signal and known locations of the one or more antennas, the transmitter, and the point. A reference signal is generated based on the modeled reference signal parameters and feedback of a previously estimated phase correction (??). The reference signal is correlated with the digital reflected IF signal to produce in-phase and quadrature-phase correlation results. Estimated carrier-to-noise ratio (C/N0) and ?? values are calculated for the digital reflected IF signal from the correlation results.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: August 15, 2023
    Assignee: The Regents of the University of Colorado, A Body Corporate
    Inventors: Yang Wang, Yu T. Morton
  • Patent number: 11729716
    Abstract: Systems and methods of transmitting and receiving a Wake-Up Radio (WUR) packet by using a simplified preamble structure that contains no training field. The preamble carries a signature sequence selected from a set of predefined sequences, each corresponding to a different data transmission rate. The preamble and the control information of the WUR packet are transmitted in the same rate as indicated by the selected sequence. Hence, a receiving WUR can determine the data transmission rate and locate the associated control information directly if a sequence that matches a predefined signature sequence is detected. The same sequence or in combination with an additional sequence in the preamble may also be used to indicate automatic gain control synchronization, packet type and other related information.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: August 15, 2023
    Inventors: Jianhan Liu, Po-Yuen Cheng, Thomas Edward Pare, Jr.
  • Patent number: 11698464
    Abstract: A GNSS receiver comprises a memory interface and a vector processor. The vector processor is configured to: receive, via the memory interface, an array comprising a plurality of correlation results stored in a memory, each correlation result associated with a respective combination of possible receiver parameters for the GNSS receiver; process the array to identify a subset of the correlation results in the array; and retain, in the memory, the identified subset and discard, from the memory, those correlation results of the plurality of correlation results not in the identified subset.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: July 11, 2023
    Assignee: Imagination Technologies Limited
    Inventors: Adrian John Anderson, Peter Bagnall
  • Patent number: 11696279
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a receive time difference (RTD) between a first base station and a second base station based at least in part on the UE using a common beam to receive transmissions from the first base station and the second base station. The UE may transmit information indicating the RTD between the first base station and the second base station, wherein the transmissions from the first base station and the second base station may be scheduled based at least in part on the RTD between the first base station and the second base station. Numerous other aspects are provided.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: July 4, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Awlok Singh Josan, Valentin Alexandru Gheorghiu
  • Patent number: 11696334
    Abstract: A user equipment includes circuitry which selects a random access preamble sequence, and a transmitter which transmits the random access preamble sequence to a base station in a frequency bandwidth of an unlicensed band, and performs at least one of a first operation and a second operation. In the first operation, the circuitry selects a first sequence as the random access preamble sequence, the first sequence having a length longer than a length of a random preamble sequence used for a licensed band, and the transmitter transmits the first sequence in the frequency bandwidth of the unlicensed band. In the second operation, the circuitry selects a second sequence as the random access preamble sequence, the second sequence having a length equal to the length of a random preamble sequence used for the licensed band, and the transmitter transmits the second sequence with repetitions in the frequency bandwidth of the unlicensed band.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: July 4, 2023
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Michael Einhaus, Joachim Loehr, Hidetoshi Suzuki, Li Wang
  • Patent number: 11681017
    Abstract: A radar sensing system includes a transmitter and a receiver. The transmitter is configured to transmit a radio signal. The receiver is configured to receive radio signals that include the transmitted radio signal reflected from objects in the environment. The transmitter and receiver are configured to distribute the signal power over frequency so that it is separated from noise and impairments at DC and low frequencies as may be caused by some radar system components which introduce DC offsets and/or low frequency (e.g. flicker) noise.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: June 20, 2023
    Assignee: Uhnder, Inc.
    Inventors: Richard Behrens, Frederick Rush, Monier Maher, Murtaza Ali
  • Patent number: 11665035
    Abstract: A method for automatically detecting a packet mode in a wireless communication system supporting a multiple transmission mode includes: acquiring at least one of data rate information, packet length information and channel bandwidth information from a transmitted frame; and determining the packet mode on the basis of the phase rotation check result of a symbol transmitted after a signal field signal and at least one of the data rate information, the packet length information and the channel bandwidth information acquired from the transmitted frame.
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: May 30, 2023
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Il-Gu Lee, Eun-Young Choi, Sok-Kyu Lee
  • Patent number: 11640003
    Abstract: An embodiment method comprises receiving a satellite signal in a tracking channel, generating a set of replicas of a pseudo random noise sequence, comprising a punctual replica and a plurality of replicas that are different in time with respect to the punctual replica over a given time spacing, correlating the received signal with each replica to obtain amplitude correlation values, monitoring the tracking channel to detect a spoofed signal by generating a further plurality of replicas of the pseudo random noise sequence having a respective time spacing greater than the given time spacing, correlating the received signal of the tracking channel with each further replica to obtain further amplitude correlation values, calculating a shape anomaly factor based on the further correlation amplitude values, verifying the shape anomaly factor is greater than a given shape anomaly threshold, and signaling detection of a spoofed signal on the tracking channel.
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: May 2, 2023
    Assignee: STMicroelectronics S.r.l.
    Inventors: Domenico Di Grazia, Fabio Pisoni
  • Patent number: 11630217
    Abstract: A method is provided for acquiring a signal from a satellite in a global navigation satellite system. The signal includes a pseudorandom code. The method includes, for each time period of a plurality of time periods: generating samples of the signal, segments of the samples of the signal are correlated with a local copy of the pseudorandom code, thereby producing correlation values for the time period. A discrete Fourier transform is performed using, as inputs, the correlation values for the respective time period, thereby producing a frequency representation of the correlation values for the time period. The frequency representations of the correlation values for the plurality of time periods are combined according to a data hypothesis. When a magnitude of the combined frequency representations meets predefined criteria, a frequency corresponding to the magnitude is selected as a tracking frequency for the satellite.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: April 18, 2023
    Assignee: Deere & Company
    Inventors: Wei Yu, Richard G. Keegan, Mark P. Kaplan
  • Patent number: 11621799
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may interleave a signal, that is to be transmitted using discrete Fourier transform (DFT) spread orthogonal frequency-division multiplexing (DFT-s-OFDM), and a negative of the signal to obtain an interleaved signal prior to performing a DFT on the interleaved signal. The UE may transmit a DFT-s-OFDM signal that is based at least in part on the interleaved signal. Numerous other aspects are provided.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: April 4, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Saeid Sahraei, Hung Dinh Ly, Tingfang Ji, Krishna Kiran Mukkavilli, Hwan Joon Kwon, June Namgoong, Taesang Yoo, Shimman Arvind Patel, Gokul Sridharan
  • Patent number: 11621898
    Abstract: A method for estimating a time-of-arrival of a packet received by a receiver includes storing a reference bit-pattern and receiving a plurality of samples in a samples-buffer. In a bit-pattern detector, a matching group of samples having a bit-pattern which matches the reference bit-pattern is identified. In a correlator, a group of three correlation values is determined from the matching group of samples, including a local maximum correlation value, P0, an immediately preceding correlation value, Pm, and an immediately succeeding correlation value Pp. In an estimation unit, a polynomial function f(?) of the difference, ?, between Pm and Pp is used to estimate a timing offset Tfrac, between the local maximum correlation value and a correlation peak. The time-of-arrival is estimated from a time of the local maximum correlation value P0, and Tfrac.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: April 4, 2023
    Assignee: NXP USA, Inc.
    Inventors: Mihai-Ionut Stanciu, Claudio Gustavo Rey
  • Patent number: 11617250
    Abstract: An illumination control system and method and an illumination device are provided. The illumination control system includes a plurality of illumination nodes which are capable of communicating with each other. The illumination node is provided therein with a wireless master control apparatus, a drive apparatus connected with the wireless master control apparatus, and at least one illumination unit controlled by the drive apparatus. The wireless master control apparatus is configured to detect a brightness of a current environment; define an illumination scenario for the illumination node; adjust an output parameter of the drive apparatus in the illumination node according to the brightness and the illumination scenario; and send a lighting instruction to a remaining illumination node of the illumination control system. The wireless master control apparatus is further configured to receive the lighting instruction.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: March 28, 2023
    Assignee: Opple Lighting Co., Ltd.
    Inventor: Jianming Xia
  • Patent number: 11579309
    Abstract: A tracking loop and associated method for tracking a satellite signal in a GNSS receiver and for determining a line-of-sight (LOS) signal from a plurality of satellite signals received by the GNSS receiver from a satellite. One or more first correlators perform a correlation between a code signal derived from one of the received satellite signals and a plurality of corresponding replica code signals to determine a plurality of code correlation sums comprising a prompt code correlation sum, one or more early code correlation sums and one or more late code correlation sums. One or more second correlators correlate the plurality of code correlation sums with a plurality of replica carrier signals, each having a different Doppler frequency offset, to determine, for each of the plurality of code correlation sums, a set of correlation magnitudes at frequencies of the plurality of replica carrier signals.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: February 14, 2023
    Assignee: u-blox AG
    Inventors: Zhenlan Cheng, Kaspar Giger, Roderick C. Bryant
  • Patent number: 11581907
    Abstract: A method in a first wireless device (WD) supporting wireless communication with a second WD is described. A plurality of wireless packets is received from the second WD including at least a first wireless packet. At least another wireless packet of the plurality of wireless packets is one of a retry packet and a repeat packet of the first packet. Each wireless packet of the plurality of wireless packets includes a plurality of bits and a first group of bits. For each received wireless packet, the plurality of bits corresponding to the received wireless packet is de-spread, and the first group of bits is correlated with a predetermined group of bits. The method further includes performing a majority vote based on the correlation of the first group of bits of each received wireless packet and creating a corrected packet based in part on the majority vote.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: February 14, 2023
    Assignee: SR Technologies, Inc.
    Inventor: Graham K. Smith
  • Patent number: 11575547
    Abstract: A method and devices for configuring a data transmission network are disclosed.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: February 7, 2023
    Assignee: Nokia Technologies Oy
    Inventors: Jakob Hoydis, Sebastian Cammerer, Sebastian Dörner
  • Patent number: 11575430
    Abstract: A communication system transmits data signals between communication nodes. A first data signal is transmitted as an electromagnetic wave along a first data transmission path to a receiver using skywave propagation. A second data signal, identical to the first data signal, is transmitted to the receiver along a second data transmission path. The two data signals are compared at the receiver to determine any distortion caused by the skywave propagation. Data regarding the distortion is sent back to the transmitter so that subsequent transmitted data signals may be preconditioned when sent by skywave propagation.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: February 7, 2023
    Assignee: Skywave Networks LLC
    Inventor: Kevin J. Babich
  • Patent number: 11573556
    Abstract: A signal gain determination circuit including a digital comparator, a digital controller and an arithmetic module, and a signal gain determination method are provided. A sensing integration circuit generates a first count during a first integration time according to a first sensing signal. The digital comparator compares the first count and a predetermined count to generate a comparison result. The digital controller generates a control signal for indicating a signal gain to a signal amplifier of the sensing integration circuit according to the comparison result. The signal amplifier adjusts the first sensing signal according to the signal gain to generate a second sensing signal, so that the sensing integration circuit generates a second count corresponding to the second sensing signal during a second integration time. The arithmetic module generates an output count corresponding to the first sensing signal according to the second count and the signal gain.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: February 7, 2023
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Yu-Wen Wang, Jia-Hua Hong
  • Patent number: 11575412
    Abstract: A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.
    Type: Grant
    Filed: August 16, 2021
    Date of Patent: February 7, 2023
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 11570821
    Abstract: In a terminal (200), a radio transmitter (209) transmits a signal, and a controller (204) determines an allocation resource to which a signal is assigned in a predetermined frequency band. The predetermined frequency band herein is divided into a plurality of bands, and each of the plurality of bands includes a plurality of frequency resources which are base units of resource allocation for the signal. Furthermore, the allocation resource to which the signal is assigned is composed of at least one of the base units of each of the plurality of bands. Furthermore, a configuration method of the at least one of the base units forming the allocation resource is different for each of the plurality of bands.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: January 31, 2023
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Tomofumi Takata, Takashi Iwai, Lilei Wang, Hidetoshi Suzuki, Tetsuya Yamamoto
  • Patent number: 11546083
    Abstract: According to an aspect, a method in a wireless communication receiver comprises receiving a radio frequency (RF) signal, delaying the RF signal with a set of time delays, shifting the RF signal with a set of offset frequencies, compressing in time the RF signal with a set of compression factors, correlating the RF signal after subjecting to said delaying, shifting and compressing in time with a reference signal, and selecting a first delay, first offset frequency, and first compression ratio that corresponds to a peak resulting from said correlating, wherein the said first delay, first offset frequency, and first compression ration representing the difference between the RF signal and the reference signal.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: January 3, 2023
    Inventor: Ganesan Thiagarajan
  • Patent number: 11528657
    Abstract: Systems, methods, apparatuses, and computer program products for intelligent reflecting surface configuration. The method may include scanning for synchronization signal blocks and reflection surface synchronization signal blocks during a cell search at a frequency on a synchronization raster. The method may also include determining whether a synchronization signal block or a reflection surface synchronization signal block is detected as a result of the scanning. The method may further include selecting a detected synchronization signal block or a detected reflection synchronization signal block based on a measurement metric of the detected synchronization signal block and the detected reflection synchronization signal block. In addition, the method may include performing an access procedure with a network element using the selected synchronization signal block or the selected reflection synchronization signal block.
    Type: Grant
    Filed: June 18, 2021
    Date of Patent: December 13, 2022
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Nitin Mangalvedhe, Frederick Vook, Qiping Zhu, William Hillery, Jun Tan
  • Patent number: 11525890
    Abstract: An architecture is provided for cooperative target tracking and signal propagation learning using mobile sensors. A method can comprise as a function of sensing data representative of a location of a target device at a first defined moment and model data relating to a motion model representing a probability density function, determining, by a system comprising a processor, a group of locations for the target device at a second defined time point, wherein the probability density function facilitates determining, based on the location of the target device at the first defined moment, a current location of the target device at a third defined moment; and as a function of the group of locations, generating, by the system, a data structure representing a matrix of received signal strength values; and identifying, by the system, a location of the group of locations for the target device at the third defined moment based on the data structure.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: December 13, 2022
    Assignee: The Hong Kong University of Science And Technology
    Inventors: Shueng Han Gary Chan, Jiajie Tan
  • Patent number: 11493638
    Abstract: A multipath (MP) carrier phase detector is disclosed that uses phase differences in the output of Early/Prompt/Late (EPL) correlation for MP detection. Embodiments may take coherent integrations of EPL correlator outputs and determine the respective carrier phase of each output. Phase differences can then be computed, and integer cycles and biases can be removed. MP can then be identified if a maximum phase difference of the EPL correlator outputs are determined to be above a certain threshold. According to some embodiments, false positives may be reduced by averaging phases and/or phase differences over a plurality of samples, and/or if a threshold number of consecutive MP detections have been made.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: November 8, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Dominic Gerard Farmer, Qingwen Zhang
  • Patent number: 11469792
    Abstract: Methods and apparatuses for carrier selection are described. In one example, a method of carrier selection for a frequency-hopping wireless communication device includes using a fixed set of available carriers to hop over during communications. The method includes allocating a subset of the available carriers to a long-range carrier class. In one example, the subset of available carriers consists of at least two carrier clusters spaced widely in the frequency spectrum. The method further includes monitoring a transmit power level in the wireless communication device. The method further includes using the long-range carrier class to hop over during communications if the wireless communication device transmit power is greater than a predetermined level.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: October 11, 2022
    Assignee: Plantronics, Inc.
    Inventor: Jacobus Cornelis Haartsen
  • Patent number: 11460586
    Abstract: A system and method for detecting a global navigation satellite system (GNSS) spoofing attack on a protected vehicle. The method includes receiving at least one GNSS signal; identifying a plurality of characteristics associated with at least one received GNSS signal; analyzing the plurality of characteristics; and determining, based on the analysis of the identified characteristics, whether the at least one GNSS signal is a spoofed signal.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: October 4, 2022
    Assignee: Regulus Cyber Ltd.
    Inventors: Yoav Zangvil, Yonatan Zur, Gal Cohen
  • Patent number: 11445405
    Abstract: A method and a system for concurrently transmitting from an antenna a first sequence of data from a first access node and a second sequence of data from a second access node is presented. An example method includes orthogonally encoding the first and second sequences, including encoding the first sequence with a first binary code to produce a first encoded sequence and encoding the second sequence with a second binary code to produce a second encoded sequence, combining the first encoded sequence and the second encoded sequence to produce a combined encoded sequence, and transmitting the combined encoded sequence from the antenna, with transmitting the combined encoded sequence from the antenna including engaging in a first transmission of the combined encoded sequence from the antenna and engaging in a second transmission of the combined encoded sequence from the same antenna with a phase delay compared with the first transmission.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: September 13, 2022
    Assignee: Sprint Spectrum L.P.
    Inventors: Nagi Mansour, Akin Ozozlu, Kafi Hassan
  • Patent number: 11346958
    Abstract: Systems, methods and apparatuses for generating long coherent integrations of received global navigation satellite system (GNSS) signals are described. One method includes generating coherent 1 second I/Q correlations by at least two stages of summation starting with 1 millisecond correlated I/Q signal samples. Intermediate stage coherent I/Q correlations may be modified based on, for example, lack of carrier phase lock and/or the carrier signal-to-noise density (C/N0). Such modifications include phase rotation. Energy/power amplitudes calculated from the coherent 1 second I/Q correlations may be used for improving multipath mitigation, the signal-to-noise ratio (SNR), and other GNSS receiver operations and functions.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: May 31, 2022
    Inventor: Gary Lennen
  • Patent number: 11308349
    Abstract: A method and a system of distributed estimation using q-diffusion least mean squares (qDiff-LMS) to modify adaptive filter weights in a decentralized wireless sensor network of N nodes is described. The method includes receiving, at each node, k, a local estimate of a previous time instance weight, wk(i?1), of an adaptive filter of each neighboring node, l, where l=1, 2, . . . , M, combining the local estimates of the previous time instance weights to generate a linear combination of global diffused weights, Øk(i?1), measuring, for each node k, an output, yk(i), of the adaptive filter of the node k, calculating, for each node k, a desired response, dk(i); generating, for each node k, an estimation error, ekCTA(i) by subtracting the output, yk(i) from the desired response, dk(i), and updating the global diffused weights by adding a portion of the estimated error to the global diffused weights.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: April 19, 2022
    Assignee: King Abdulaziz University
    Inventors: Abdulrahman U. Alsaggaf, Ubaid M. Al-Saggaf, Muhammad Moinuddin, Muhammad Arif, Imran Naseem
  • Patent number: 11303905
    Abstract: An information processing system includes one or more processors configured to acquire a plurality of pieces of divided data generated by dividing the data, determine, in accordance with offset information, a first position of a first key point closest to a head position of each of the plurality of pieces of divided data, and a second position of a second key point closest to an end position of each of the plurality of pieces of divided data, generate first difference information indicating first data between the head position and the first position, and second difference information indicating second data between the end position and the second position, generate metadata to be used for decoding partial data, distribute the plurality of pieces of divided data to a plurality of nodes respectively together with the first difference information, the second difference information, and the metadata.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: April 12, 2022
    Assignee: FUJITSU LIMITED
    Inventors: Satoshi Iwata, Masahisa Tamura
  • Patent number: 11300647
    Abstract: A long range navigation system may include radio frequency (RF) transmitter stations at fixed geographical locations, each having an RF transmitter and an RF modulator coupled to the RF transmitter, and configured to generate a direct sequence spread spectrum (DSSS) RF signal being spectrally shaped so that 99% of power from the RF transmitter is within the frequency range of 90-110 KHz. Movable RF receiver units each include an RF receiver and a demodulator coupled to the RF receiver configured to demodulate the DSSS RF signal to determine a position of the movable RF receiver unit.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: April 12, 2022
    Assignee: EAGLE TECHNOLOGY, LLC
    Inventors: Gary W. Mason, William C. Adams, Jr.
  • Patent number: 11283432
    Abstract: A device includes a clock delay circuit configured to receive a reference clock signal and generate N delay clock signals, where N is a natural number greater than or equal to 2, by using the reference clock signal, and an output circuit configured to receive the N delay clock signals and output at least a portion of the delay clock signals from among the N delay clock signals as an output signal, wherein a phase delay of a delay clock signal that is output later in time from among the at least the portion of the delay clock signals is greater than or equal to a phase delay of a delay clock signal that is output earlier in time, and wherein a cycle of the output clock signal is longer than or equal to a cycle of the reference clock signal.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: March 22, 2022
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Dong Ho Kim, Gil Sung Roh
  • Patent number: 11215713
    Abstract: A tones processing system including an interference tone determination module (ITDM), an interference tone tracker module (ITTM) and an interference tone removal module (ITRM) is provided. The ITDM sequentially searches for one or more continuous wave interference (CWI) tones in N samples of intermediate frequency (IF) data within a programmable signal frequency band. The ITTM tracks the detected CWI tones. The ITRM removes the tracked CWI tones from the N samples of IF data using one or more interference tone removal units (ITRUs). Each of the ITRUs includes a second signal generator, a second mixer, a tone filter for suppressing the tracked CWI tones, and a quantizer for reducing the number of processing bits in a tone suppressed output signal. The ITRM performs frequency shift compensation and phase rotation compensation with reduced logic area and power consumption in the global navigation satellite system receiver.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: January 4, 2022
    Assignee: ACCORD IDEATION PRIVATE LIMITED
    Inventors: Gowdayyanadoddi Shivaiah Naveen, Vikram Kudligi Hiramat, Rajashekaran Chinnadurai, Manjeeth Thattam Kandiyil, Mahesh Kumar