Correlative Or Matched Filter Patents (Class 375/343)
  • Patent number: 11988611
    Abstract: Semiconductor metrology systems based on directing radiation on a wafer, detecting second harmonic generated (SHG) radiation from the wafer and correlating the second harmonic generated (SHG) signal to one or more electrical properties of the wafer are disclosed. The disclosure also includes parsing the SHG signal to remove contribution to the SHG signal from one or more material properties of the sample such as thickness.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: May 21, 2024
    Assignee: FemtoMetrix, Inc.
    Inventors: Viktor Koldiaev, Marc Christopher Kryger, John Paul Changala, Jianing Shi
  • Patent number: 11979822
    Abstract: A user equipment may be configured to perform demodulator selection based on ML model coefficients trained by a base station. In some aspects, the user equipment may transmit a dynamic demodulator indication to a base station, transmit channel information to the base station, and receive, in response to the dynamic demodulator indication, updated coefficient information based on the channel information. Further, the user equipment may select a demodulator based on the updated coefficient information, and communicate with the base station via the demodulator in response to the selection of the demodulator.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: May 7, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Jacob Pick, Shay Landis, Shlomit Shaked
  • Patent number: 11963122
    Abstract: Disclosed is a method of estimating, by a user equipment, a reception delay time of a reference signal, the method including receiving a reference signal from a base station; setting a plurality of summation time intervals within a time interval in which the reference signal is received, and acquiring a plurality of snapshot vectors corresponding to the plurality of summation time intervals; calculating a covariance matrix based on the plurality of snapshot vectors; and estimating a reception delay time of the reference signal based on the covariance matrix.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: April 16, 2024
    Assignee: Locaila, Inc
    Inventor: Jaihyung Cho
  • Patent number: 11937224
    Abstract: A data transmission method includes: when data to be transmitted is subjected to resource mapping on a first symbol of a wireless transmission resource distributed to a sending device, selecting target subcarriers on a frequency domain of the wireless transmission resource at equal intervals according to a pre-acquired sequence number interval; mapping said data to each target subcarrier in the frequency domain; respectively modulating each target subcarrier by using said data to obtain a time domain symbol; setting information of a previous preset length of the time domain symbol to be 0 to obtain an output symbol, wherein the preset length is equal to y/x, y is smaller than x, and x is a serial number interval; and transmitting the output symbol.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: March 19, 2024
    Inventor: Yuanyuan Li
  • Patent number: 11930468
    Abstract: A wireless communication method includes: receiving a wireless signal including a plurality of frames, wherein each of the plurality of frames includes a plurality of sub-frames and a current frame is initially a first one of the frames; a) performing a correlation calculation between each of the sub-frames of the current frame and each a plurality of reference signals to generate a plurality of current correlation values; b) respectively accumulating the current correlation values with previous correlation values to generate cumulative values respectively corresponding to the plurality of sub-frames of the current frame; determining whether an effective synchronization signal is detected, based on the current cumulative values; and setting the current frame to a next one of the frames, setting the previous correlational values to the current correlation values, and determining whether to resume to step a) based on the determination as to whether the effective synchronization signal is detected.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: March 12, 2024
    Inventors: Hae-Chul Lee, Sung-Yoon Cho
  • Patent number: 11909566
    Abstract: The present invention discloses a method for the design of complex-valued channel equalizer of digital communication systems, including: constructing a channel equalizer by using a complex-valued neural network; collecting the output signal y(n)=[y(n), y(n?1), . . . , y(n?m+1)]T of the nonlinear channel of the underlying digital communication system as the input of complex-valued neural network and s(n??) as the desired output, and taking the mean squared error as the loss function for the training of complex-valued neural network, which is optimized by the proposed adaptive complex-valued L-BFGS algorithm, and finally using it to implement the design of channel equalizer for digital communication systems. The present invention proposes the use of a multi-layer feedforward complex-valued neural network to construct complex-valued channel equalizer.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: February 20, 2024
    Inventors: He Huang, Yongliang Zhang, Gangxiang Shen
  • Patent number: 11870489
    Abstract: A tentative decision is made for symbols on the basis of a received signal and a decision threshold, and a tentative decision signal including a sequence of the symbols is output. A scale value indicating a rate of increase or reduction of the received signal or a threshold change rate indicating a degree of change in the decision threshold is updated so that an appearance frequency of each of symbols included in the tentative decision signal matches an appearance frequency of each of symbols in a reference signal obtained by modulating a transmitted signal with a modulation method used in transmission which is shared between a transmitting side and a receiving side, and an SN ratio is calculated using the scale value or the threshold change rate when a degree of agreement between the appearance frequencies is within a predetermined permissible range.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: January 9, 2024
    Inventors: Masanori Nakamura, Shuto Yamamoto, Asuka Matsushita, Fukutaro Hamaoka, Yoshiaki Kisaka
  • Patent number: 11860264
    Abstract: A ranging apparatus of an embodiment is a ranging apparatus adopting communication type ranging by a phase detection scheme. The ranging apparatus including: a transmitting circuit configured to be able to transmit by a plurality of channels used for data communication and configured to transmit a transmission signal obtained by modulating transmission data; and a control circuit configured to control the transmission circuit to cause a plurality of continuous waves having mutually different frequencies to be generated in a same channel as continuous waves used for ranging by the phase detection scheme.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: January 2, 2024
    Inventors: Hiroshi Yoshida, Masaki Nishikawa, Shoji Ootaka, Katsuya Nonin, Masayoshi Oshiro
  • Patent number: 11778560
    Abstract: A method for a wireless transmitter is disclosed. The method comprises transmitting a wake-up signal over a frequency range during a time interval by transmitting a first signal part over a first frequency interval within the frequency range during the time interval and transmitting a second signal part over a second frequency interval within the frequency range during the time interval. The first and second frequency intervals are non-overlapping. The first signal part has a first auto-correlation value, and the second signal part is specifically constructed to provide a second autocorrelation value of the signal comprising the first and second signal parts which is lower than the first auto-correlation value. The invention to solve the problem of false detection of an MC-OOK modulated wake-up signal in an IEEE 802.11 system using OFDM.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: October 3, 2023
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Miguel Lopez, Leif Wilhelmsson
  • Patent number: 11777778
    Abstract: A transmitter includes a mapping circuit and a framing circuit. The mapping circuit is configured to combine and map a first data sequence and a second data sequence onto orthogonal frequency division multiplexing (OFDM) subcarriers which include first subcarriers and second subcarriers. The framing circuit is configured to generate an OFDM signal from the OFDM subcarriers. The mapping circuit is configured to: map first data included in the first data sequence and second data included in the second data sequence onto the first subcarriers; and map the second data onto the second subcarriers. The first data are not mapped on the second subcarriers.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: October 3, 2023
    Inventor: Peter Klenner
  • Patent number: 11751253
    Abstract: Systems and methods for communication in 4G and 5G broadband satellite networks are provided. The disclosed methods include Global Navigation Satellite System (GNSS)-independent methods, and GNSS assisted methods that do not require transmission of satellite ephemeris information from a base station to user equipment.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: September 5, 2023
    Inventor: Xiangdong Liu
  • Patent number: 11729028
    Abstract: In one aspect, an apparatus includes: a fast Fourier transform (FFT) engine to receive and convert a plurality of orthogonal frequency division multiplexing (OFDM) samples into a plurality of frequency carriers; a detector coupled to the FFT engine to determine a channel estimate for a first frequency carrier using a first channel estimate for the first frequency carrier and a plurality of other channel estimates, each of the plurality of other channel estimates for one of a plurality of neighboring frequency carriers within an evaluation window, and determine a log likelihood ratio (LLR) for the first frequency carrier using the channel estimate for the first frequency carrier; and a decoder coupled to the detector to decode a first OFDM symbol comprising the first frequency carrier using the LLR for the first frequency carrier.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: August 15, 2023
    Assignee: Skyworks Solutions, Inc.
    Inventors: Alexander Kleinerman, Bradley Arthur Wallace
  • Patent number: 11716764
    Abstract: Method, apparatuses, and computer program product for addressing random access responses with extended response windows. One method may include accessing, by a user equipment, a network by sending a random access channel preamble to a network element. The method may also include receiving, in response to the random access channel preamble, a random access response from the network element. The random access response provides an indication of which random access channel occasion in time within a span of one or a plurality of radio frames the random access response applies.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: August 1, 2023
    Inventors: Samuli Turtinen, Chunli Wu, Sami Hakola
  • Patent number: 11683061
    Abstract: Various data transmission detection systems are described. A receiver input through which a wireless data transmission signal is received may be present. A plurality of mixers in communication with the receiver input may be present, which may be digitally implemented. A data transmission detector may be present that receives a mixed wireless data transmission signal from each mixer and creates a plurality of scores. A match detection module may be present that receives the scores and identifies a highest score. The signal mapped to the highest score to be selected for further processing.
    Type: Grant
    Filed: June 15, 2022
    Date of Patent: June 20, 2023
    Assignee: Hughes Network Systems, LLC
    Inventor: Qiujun Huang
  • Patent number: 11653366
    Abstract: A wireless device selects a first downlink reference signal from one or more downlink reference signals based on a received signal strength of the first downlink reference signal being above a value. Based on an index of the first downlink reference signal, a radio network identifier is determined. A downlink control information (DCI) addressed to the radio network identifier and indicating one or more random access occasions (ROs) is received. In response to receiving the DCI, a preamble is transmitted via one of the one or more ROs.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: May 16, 2023
    Assignee: Beijing Xiaomi Mobile Software Co., Ltd.
    Inventors: Nazanin Rastegardoost, Esmael Dinan, Hyoungsuk Jeon, Hua Zhou, Kai Xu
  • Patent number: 11611369
    Abstract: A data receiver is configured to receive a signal including a plurality of partial data packets, wherein the plurality of partial data packets each include part of a data packet, wherein the data receiver includes a multi-stage correlator that is configured to perform multi-stage correlation to detect the partial data packets in the received signal, wherein a second correlation stage of the multi-stage correlator operates based on correlation results of a first correlation stage of the multi-stage correlator.
    Type: Grant
    Filed: October 13, 2020
    Date of Patent: March 21, 2023
    Inventors: Eberhard Gamm, Gerd Kilian, Jakob Kneißl, Josef Bernhard, Markus Siebenhaar
  • Patent number: 11570706
    Abstract: Aspects relate to Layer 1/Layer 2-centric inter-cell mobility communication systems where measurement information from at least one user equipment (UE) is sent to a base station. Based on this information, the base station may select at least one of a remote radio head (RRH), a serving cell, or a cell assigned with a physical cell ID that serves a particular UE using one of Layer 1 or Layer 2 control signaling based on the received measurement information and a system serving cell configuration or mode of operation. Additionally, an indication may be provided of whether cell configurations are the same for target and source cells in an inter-cell handover and a UE may utilize the same source cell configuration during a handover when connecting with the target cell when the configurations match or at least partially match.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: January 31, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Qian Zhang, Yan Zhou, Tao Luo
  • Patent number: 11558147
    Abstract: Methods and apparatus for decoding received uplink transmissions using log-likelihood ratio optimization. In an embodiment, a method includes soft-demapping resource elements based on soft-demapping parameters as part of a process to generate log-likelihood ratios (LLR) values, decoding the LLRs to generate decoded data, and identifying a target performance value. The method also includes determining a performance metric from the decoded data, and performing a machine learning algorithm that dynamically adjusts the soft-demapping parameters to move the performance metric toward the target performance value.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: January 17, 2023
    Assignee: Marvell Asia Pte, Ltd
    Inventors: Sabih Guzelgoz, Hong Jik Kim
  • Patent number: 11539568
    Abstract: There is provided an apparatus for detecting repetitive information in data packets communicated between a first node and a second node over a wireless network. The apparatus includes a processing circuitry. The processing circuitry is configured to: (a) collect samples of a data communication signal transmitted between said first node and the second node over said wireless network at a plurality of respective times; (b) group the collected samples into a plurality of sequences of samples; (c) combine the sequences of samples into at least one united signal; and (d) based on an analysis of the at least one united signal, provide a signal indicative of repetitive information in a plurality of data packets carried by said data communication signal.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: December 27, 2022
    Inventors: Assaf Monsa Chermon, Hanan Leizerovich
  • Patent number: 11533207
    Abstract: A radio receiver comprises a matched filter bank and a decision unit. The matched filter bank has a plurality of filter modules for generating correlation-strength data from a sampled radio signal, each filter module being configured to cross-correlate the sampled signal with data representing a respective filter sequence. The decision unit is configured to use the correlation-strength data to generate a sequence of decoded symbols from the sampled signal. The matched filter bank and/or decision unit are configured to determine the value of each symbol in the sequence in part based on the value of a respective earlier decoded symbol from the sequence of decoded symbols.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: December 20, 2022
    Assignee: Nordic Semiconductor ASA
    Inventors: Daniel Ryan, Wei Li
  • Patent number: 11533126
    Abstract: A method comprises: receiving, from a communication channel, non-binary multilevel symbols that represent corresponding multibit labels each including at least a least-significant bit (LSB) and a most-significant bit (MSB), the non-binary multilevel symbols mapped to the multibit labels according to set-partition labeling, which partitions the non-binary multilevel symbols between a first set and a second set according to a first value and a second value of the LSB, respectively; digitizing the non-binary multilevel symbols to produce symbol samples; and performing Soft-Output-Viterbi (SOV) equalization of the non-binary multilevel symbols based on the symbol samples, to produce decoded symbol information corresponding to the non-binary multilevel symbols.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: December 20, 2022
    Inventors: Stefan Helmut Müller-Weinfurtner, Andreas Bernhard Bisplinghoff
  • Patent number: 11522668
    Abstract: A method applicable to a receiver circuit, including: performing a cross-correlation operation upon at least one time-domain signal on at least one receiver path of the receiver circuit according to a local sequence signal, to estimate at least one time offset amount of the at least one time-domain signal as at least one time offset compensation amount; and, performing time offset compensation upon the at least one time-domain signal on the at least one receiver path according to the at least one time offset compensation amount.
    Type: Grant
    Filed: July 4, 2021
    Date of Patent: December 6, 2022
    Assignee: Realtek Semiconductor Corp.
    Inventor: Lihua Wang
  • Patent number: 11476975
    Abstract: A receiver is configured to capture a plurality of linearly distorted OFDM symbols transmitted over a signal path. The receiver forms the captured OFDM symbols into an overlapped compound data block that includes payload data and at least one pseudo-extension, processes the overlapped compound block with circular convolution in the time domain using an inverse channel response, or frequency domain equalization, to produce an equalized compound block, and discards end portions of the equalized block to produce a narrow equalized block. The end portion corresponds with the pseudo-extension, and the narrow block corresponds with the payload data. The receiver cascades multiple narrow equalized blocks to form a de-ghosted signal stream of OFDM symbols. The OFDM symbols may be OFDM or OFDMA, and may or may not include a cyclic prefix, which will have a different length from the pseudo-extension.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: October 18, 2022
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Thomas H. Williams, Gregory Charles White
  • Patent number: 11474225
    Abstract: A chip-implementation of a millimeter wave MIMO radar comprises transmitters for transmitting short bursts of digitally modulated radar carrier signals and receivers for receiving delayed echoes of those signals. Various signal formats defined by the number of bits per transmit burst, the transmit burst duration, the receive period duration, the bitrate, the number of range bins, and the number of bursts per scan, facilitate the choice of modulating bit patterns such that when correlating for target echoes over an entire scan, the correlation codes for different ranges and different transmitters are mutually orthogonal or nearly so. In the event of imperfect orthogonality, simple orthogonalization schemes are revealed, such as subtraction of strong already-detected target signals for better detecting weaker signals or moving targets that are rendered non-orthogonal by their Doppler shift.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: October 18, 2022
    Assignee: Uhnder, Inc.
    Inventors: Paul W. Dent, Curtis Davis, Murtaza Ali
  • Patent number: 11457423
    Abstract: A radio receiver device is arranged to store samples of incoming data symbols in an indexed memory portion having a length of A+B+C. A first data buffer 20-1 has an initial address at index 0 and a final address at index A-1. A timing adjustment buffer 22 has an initial address at index A and a final address at index A+B?1. A second data buffer 20-2 has an initial address at an index A+B and a final address at an index A+B+C?1. A buffer switch pointer 24 has a trigger address between the index 0 and the index A+B?1, at which it triggers a switch 26 from the first to the second buffer. If the current address matches the trigger address, the current address is set to the index A+B. Otherwise, the current address is incremented. If there is a timing offset between local and network clocks, the trigger address is moved to reduce the offset.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: September 27, 2022
    Assignee: Nordic Semiconductor ASA
    Inventors: Ilari Kukkula, Tapani Jaakola
  • Patent number: 11444811
    Abstract: Symbols are received on a downstream channel. A value of a channel synchronization parameter is determined based on the received symbols. An interference event on the downstream channel is detected. In response to detecting the interference event: an output signal is determined based on at least one cached value of the channel synchronization parameter, the at least one cached value being determined based on symbols received prior to and offset from the detecting of the interference event.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: September 13, 2022
    Assignee: Intel Corporation
    Inventors: Bernard Arambepola, Thushara Hewavithana
  • Patent number: 11444663
    Abstract: Methods and apparatus for orthogonal stream spatial multiplexing. In one embodiment, a method includes splitting and modulating a data stream into n MIMO RF spatial streams and coupling them to corresponding switchable polarization antenna elements controlled via orthogonal binary codes for transmission. Each transmitted stream manifests as time-varying-polarization-orthogonal to the other n?1 spatial streams. The method includes reception of the streams at their destination using corresponding antenna elements controlled by the same set of orthogonal codes. Thus, each of the n transmitted spatial streams is polarization-match-filtered, unambiguously separated and individually recovered from all the others upon reception for subsequent demodulation and MIMO spatial recombination into the original data stream.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: September 13, 2022
    Inventor: Carlos A. Rios
  • Patent number: 11412387
    Abstract: The disclosed embodiments relate to a system that camouflages EMI fingerprints in EMI emissions from a computing system to enhance system security. During operation, the system monitors the EMI emissions from the computer system during operation of the computer system to produce corresponding EMI signals. Next, the system determines a dynamic amplitude of the EMI emissions based on the EMI signals. If the dynamic amplitude of the EMI emissions drops below a threshold value, the system executes synthetic transactions, which have interarrival times that, when superimposed on a workload of the computer system, cause the computer system to produce randomized EMI emissions.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: August 9, 2022
    Assignee: Oracle International Corporation
    Inventors: Kenny C. Gross, Ashin George, Guang C. Wang
  • Patent number: 11391847
    Abstract: Structures and techniques are disclosed that can be used to reduce or remove code multipath error in GNSS receivers by implementing one or more monitoring correlators in a multipath-error estimation and correction (MEC) module. The MEC module detects and provides for correction of correlation peak distortion. In exemplary embodiments, a code tracking loop integrates all-chip-edges of a PRN, and a narrow-correlator is used to update the tracking loop rate while a multipath estimation module implements a blanked correlator to estimate and remove the multipath bias from the code tracking loop measurements.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: July 19, 2022
    Assignee: NovAtel Inc.
    Inventor: Ali Broumandan
  • Patent number: 11387858
    Abstract: Various data transmission detection systems are described. A receiver input through which a wireless data transmission signal is received may be present. A plurality of mixers in communication with the receiver input may be present, which may be digitally implemented. A data transmission detector may be present that receives a mixed wireless data transmission signal from each mixer and creates a plurality of scores. A match detection module may be present that receives the scores and identifies a highest score. The signal mapped to the highest score to be selected for further processing.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: July 12, 2022
    Assignee: Hughes Network Systems, LLC
    Inventor: Qiujun Huang
  • Patent number: 11368199
    Abstract: A reception unit in a radio communication apparatus receives wirelessly a signal configured with a preamble from another radio communication apparatus. The synchronization detection unit uses the preamble included in the signal received by the reception unit to detect synchronization with another radio communication apparatus. The signal accumulation unit accumulates a signal extracted from the signal received by the reception unit based on a timing at which the synchronization is detected by the synchronization detection unit. The combining unit combines the signals accumulated in the signal accumulation unit in accordance with a blind adaptive array antenna algorithm. The demodulation unit demodulates the signals combined by the combining unit.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: June 21, 2022
    Inventors: Hajime Katsuda, Yosuke Fujino, Kazunori Akabane
  • Patent number: 11336497
    Abstract: Systems and methods for a non-data-aided (NDA) approach to advanced OFDM timing are provided. This approach allows for accurate OFDM symbol timing and synchronization by avoiding inter-symbol interference (ISI) in multipath environments where an earliest arriving signal may not be the strongest signal. The NDA approach may rely on generating and applying a bias correction to a combined correlation result of the multi-path signals.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: May 17, 2022
    Assignee: Sirius XM Radio Inc.
    Inventors: Edward Schell, Carl Scarpa
  • Patent number: 11330635
    Abstract: This application provides an information transmission method and apparatus. The method includes: sending, by a network device, first information, where the first information indicates a first parameter, and the first parameter is at least one of 237, 216, 195, 173, 152, 137, 132, 127, 121, 117, 112, 108, 103, 99, 94, 91, 89, 86, 84, 81, 77, 74, 72, 69, 68, 67, 66, 64, 63, 62, 61, 59, 58, and 57, or at least one of 153, 137, 122, 109, 97, 85, 81, 77, 74, 71, 68, 65, 63, 60, 57, 55, 53, 51, 50, 48, 47, and 45. According to the information transmission method and apparatus provided in this application, information used to generate a random access preamble sequence can be configured for a terminal device.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: May 10, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhiheng Guo, Fredrik Berggren, Xinqian Xie, Yue Zhao
  • Patent number: 11310838
    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for signaling channel preemption indications that enable a user equipment (UE) of a first type to take one or more actions on resources that are re-allocated to an UE of a second type. An exemplary method generally includes determining that resources allocated for a scheduled transmission by a first user equipment (UE) of a first type overlaps with uplink channel resources allocated to a second UE of a second type. The method also includes signaling, based on the determination, an uplink preemption indication (ULPI), to the second UE, that identifies at least some of the overlapping resources.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: April 19, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Chih Ping Li, Jing Jiang, Jing Sun, Wanshi Chen, Seyedkianoush Hosseini, Jay Kumar Sundararajan, Yi Huang
  • Patent number: 11290177
    Abstract: Disclosed embodiments relate to modular antenna systems. In one example, an antenna system includes M user terminal elements, each being application-agnostic and including an antenna either to generate an incoming signal in response to incident satellite radio waves or to transmit an outgoing signal, and an active circuit to process the incoming and outgoing signals, a control circuit to control the processing performed by the M active circuits, and N user terminal modules (UTM) each including a daisy-chain of O of the M active circuits, each UTM further including a buffer placed after every P active circuits in order to correct any degradation that has occurred in the daisy-chain, and wherein M can be adjusted so that an antenna area and a corresponding throughput and bandwidth available to an application are adjustable and scalable.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: March 29, 2022
    Assignee: UTVATE Corporation
    Inventors: Siamak Ebadi, Stefan William Turkowski, Andres Felipe Osorio, Amin Reda
  • Patent number: 11265093
    Abstract: A method for compensating group delay variations in a CDMA spread spectrum receiver, comprising: receiving an RF signal; generating an ideal replica signal; filtering the RF signal by one or more filters; obtaining an ideal auto-correlation function (ACF) of the ideal replica signal; distorting the ideal ACF to generate a distorted ACF by a filtering model of the one or more filters; aligning the ideal ACF and the distorted ACF; calculating a set of correction factors based on a ratio of the ideal ACF and the distorted ACF; calculating a cross-correlation signal based on the filtered RF signal and the ideal replica signal; and obtaining a compensated correlation signal by applying the set of correction factors to the cross-correlation signal.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: March 1, 2022
    Assignee: u-blox AG
    Inventor: Clemens Buergi
  • Patent number: 11258650
    Abstract: A communication method, a communications apparatus, and a storage medium are disclosed, to reduce a probability that consecutive bit errors occur in a communications system. A received to-be-sent signal is modulated to obtain a modulated signal, and N rounds of operations are further performed on the modulated signal to obtain an encoded signal. An output of the 1st-round operation in the N rounds of operations is determined based on the modulated signal and an output that is of the Nth-round operation and that is processed by a first delay circuit, and an output of the ith-round operation in the N rounds of operations is determined based on an output of the (i?1)th-round operation and an output that is of the Nth-round operation and that is processed by a second delay circuit, where i is an integer greater than 1 and less than or equal to N.
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: February 22, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Tianjian Zuo, Sen Zhang
  • Patent number: 11259299
    Abstract: It is an object to provide a sequence allocating method that, while maintaining the number of Zadoff-Chu sequences to compose a sequence group, is configured to make it possible to reduce correlations between different sequential groups. This method comprises the steps of setting a standard sequence with a standard sequence length and a standard sequence number in a step, setting a threshold value in accordance with an RB number in a step, setting a sequence length corresponding to RB number in a step, judging whether ¦r/N-rb/Nb¦=Xth(m) is satisfied in a step, including a plurality of Zadoff-Chu sequences with a sequence number and a sequence length in a sequence group in a step if the judgment is positive, and allocating the sequence group to the same cell in a step.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: February 22, 2022
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Takashi Iwai, Daichi Imamura, Tomofumi Takata, Yoshihiko Ogawa
  • Patent number: 11252002
    Abstract: There is disclosed a radio node for a wireless communication network, the radio node being adapted for processing reference signaling based on a coding, the coding being based on a Golay sequence. The disclosure also pertains to related devices and methods.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: February 15, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Henrik Sahlin, Ansuman Adhikary, Johan Axnäs, Robert Baldemair, Andres Reial
  • Patent number: 11146299
    Abstract: Embodiments of the invention include a wakeup receiver (WRX) featuring a charge-domain analog front end (AFE) with parallel radio frequency (RF) rectifier, charge-transfer summation amplifier (CTSA), and successive approximation analog-to-digital converter (SAR ADC) stages. The WRX operates at very low power and exhibits above-average sensitivity, random pulsed interferer rejections, and yield over process.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: October 12, 2021
    Assignee: EVERACTIVE, INC.
    Inventor: Kuo-Ken Huang
  • Patent number: 11137500
    Abstract: A method, apparatus, computer program, data structure, signal relating to: causing correlation of a digital signal provided by a receiver with a motion-compensated correlation code, wherein the motion-compensated correlation code is a correlation code that has been compensated before correlation using one or more phasors dependent upon an assumed or measured movement of the receiver.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: October 5, 2021
    Assignee: Focal Point Positioning Limited
    Inventors: Ramsey Faragher, Nicolas Couronneau, Mark Crockett, Peter Duffett-Smith
  • Patent number: 11133890
    Abstract: Adaptive multi-standard signal classification and synchronization is disclosed. Devices, systems and methods include an auto-correlation bank and a signal classifier to efficiently and reliably distinguish signals of wireless protocols, such as Bluetooth, 1 megabit-per-second (Mbps) Bluetooth low energy (BLE), 2 Mbps BLE, long range (LR) BLE, ZigBee (ZB), high-rate ZB, and so on. The auto-correlation bank includes a set of auto-correlators with different delays, which facilitate distinguishing between the different wireless protocols. Exemplary aspects can further distinguish and/or compensate for interference sources, such as WiFi, constant wave (CW) clock sources, and so on. In some examples, a frequency offset of an incoming signal can be output for further signal processing. In a parallel path, a cross-correlation circuit facilitates synchronization to the incoming signal based on a signal type identified by the signal classifier.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: September 28, 2021
    Assignee: Qorvo US, Inc.
    Inventor: Andrew Fort
  • Patent number: 11122552
    Abstract: Technology for a Next Generation NodeB (gNB) operable to encode downlink control information (DCI) for transmission to a user equipment (UE) is disclosed. The gNB can identify DCI for transmission from the gNB. The gNB can determine that a size of the DCI exceeds a defined threshold. The gNB can divide the DCI into one or more DCI segments. Each DCI segment can include header information to enable the one or more DCI segments to be assembled at the UE. The gNB can encode the one or more DCI segments of the DCI for transmission from the gNB to the UE.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: September 14, 2021
    Assignee: APPLE INC.
    Inventors: Dae Won Lee, Gang Xiong, Hong He, Seunghee Han
  • Patent number: 11115770
    Abstract: A multi-channel decorrelator for providing a plurality of decorrelated signals on the basis of a plurality of decorrelator input signals is configured to premix a first set of N decorrelator input signals into a second set of K decorrelator input signals, wherein K<N. The multi-channel decorrelator is configured to provide a first set of K? decorrelator output signals on the basis of the second set of K decorrelator input signals. The multi-channel decorrelator is further configured to upmix the first set of K? decorrelator output signals into a second set of N? decorrelator output signals, wherein N?>K?. The multi-channel decorrelator can be used in a multi-channel audio decoder. A multi-channel audio encoder provides complexity control information for the multi-channel decorrelator.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: September 7, 2021
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Sascha Disch, Harald Fuchs, Oliver Hellmuth, Juergen Herre, Adrian Murtaza, Jouni Paulus, Falko Ridderbusch, Leon Terentiv
  • Patent number: 11109337
    Abstract: A method for estimating an arrival time of a wireless communication signal comprises the steps of: receiving a packet including a first preamble, a second preamble, and a start of frame delimiter (SFD) by a receiver; estimating, by the receiver, a first delay time on the basis of a time point of demodulating the SFD and the symbol length of the first preamble; and estimating, by the receiver, a second delay time on the basis of an accumulated correlation degree calculated by performing an accumulated correlation calculation on the second preamble.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: August 31, 2021
    Inventors: Jae Hong Eom, Yunho Jung, Jeonghyeon Cheon, Hyunsu Hwang
  • Patent number: 11074458
    Abstract: A system and method for searching a video stream collected by a camera in a video surveillance system for an object's placement or displacement is disclosed. The searching includes an interactive question/answer approach that allows for a video snippet including the object's placement or displacement to be found quickly without the need for complicated video analytics. During the search, frames from algorithmically selected points in the video stream are presented to a user for review. The user reviews each frame and indicates if he/she sees the object. Based on the user's response the searching algorithmically reduces the portion video stream that is searched until a snippet of a video is found that includes the object's placement or displacement.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: July 27, 2021
    Inventor: Shahar Daliyot
  • Patent number: 11055122
    Abstract: A device configured to emulate a string correlithm object in a correlithm object processing system includes a string correlithm object generator configured to output a string correlithm object comprising a plurality of sub-string correlithm objects. Each sub-string correlithm object is adjacent in n-dimensional space to a preceding sub-string correlithm object and a subsequent sub-string correlithm object to form a string. A node is configured to receive a plurality of discrete data values. A memory is configured to store a node table that associates sub-string correlithm objects with discrete data values such that a first sub-string correlithm object is associated with a first discrete data value and a second sub-string correlithm object is associated with a second discrete data value.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: July 6, 2021
    Assignee: Bank of America Corporation
    Inventor: Patrick N. Lawrence
  • Patent number: 11038729
    Abstract: Methods, systems, and devices for wireless communications are described. A device (e.g., a base station or a user equipment (UE)) may identify a sequence length corresponding to a number of resource blocks, and select a modulation scheme based on the sequence length. The device may select, from a set of sequences associated with the modulation scheme, a sequence having the sequence length. In some examples, the set of sequences may include at least one of a set of time domain phase shift keying computer-generated sequences or a set of frequency domain phase shift keying computer-generated sequences. The device may generate a reference signal for a data transmission based on the sequence and transmit the reference signal within the number of resource blocks.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: June 15, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Wei Yang, Yi Huang, Seyong Park, Gokul Sridharan, Peter Gaal, Alexandros Manolakos, Xiao Feng Wang, Tingfang Ji
  • Patent number: 11012225
    Abstract: A synchronization detection method for new radio (NR) sidelink. In some embodiments, the method includes calculating a first delay compensated input signal, calculating a first correlation value, calculating a first correlation power, calculating a first weighted correlation power, and detecting a synchronization signal. The first delay compensated input signal may be based on an input signal, and an index of a first tap value. The first correlation value may be based on a first candidate sequence and the first delay compensated input signal. The first correlation power may be based on the first correlation value. The first weighted correlation power may be based on a first weighting factor, and the first correlation power. The detecting of the synchronization signal may include using the first weighted correlation power.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: May 18, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sili Lu, Hongbing Cheng
  • Patent number: 11002828
    Abstract: A method of using a multi-input multi-output (MIMO) antenna array for high-resolution radar imaging and wireless communication for advanced driver assistance systems (ADAS) utilizes a MIMO radar and at least one base station. The MIMO radar establishes wireless communication with the base station via an uplink signal. Likewise, the base station sends a downlink signal to the MIMO radar. Further, unlike conventional vehicle-to-everything (V2X) systems that filter the reflected uplink signal, the MIMO radar uses the reflected uplink signal to detect a plurality of targets. Accordingly, the MIMO radar derives spatial positioning data for each target from the reflected uplink signal.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: May 11, 2021
    Inventor: Tiejun Shan