Utilizing Correlation Techniques Patents (Class 342/378)
  • Patent number: 10764809
    Abstract: Methods and systems are presented in this disclosure that enable mobile devices without access to an active network connection (e.g. cellular, satellite or Internet network) to communicate between each other by sending and receiving data packets (e.g. text, location, or image) through a mesh of connected devices. A packet for forwarding is included into a mesh forwarding list at a mobile device, wherein the mesh forwarding list includes packets for forwarding to one or more mobile devices. The mobile device checks, in each packet within the mesh forwarding list, a list with at least one identifier of at least one wireless device that has already received the packet. The mobile device forwards the mesh forwarding list to the one or more wireless devices via at least one connection, based on the checked one or more identifiers.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: September 1, 2020
    Assignee: Bridgefy, Inc.
    Inventors: Jorge Luis Rios Almanza, Diego Ivan Garcia Escobedo, Roberto Betancourt Sanchez, Daniel Felipe Heredia Saucedo
  • Patent number: 10739466
    Abstract: A technology is described for mitigating global positioning system (GPS) spoofer signals. A potentially spoofed GPS signal received via an antenna coupled to a GPS receiver can be identified. The potentially spoofed GPS signal can be applied to a spoofer signal nulling loop to generate a set of spoofer nulling weights. The set of spoofer nulling weights can produce a direction vector associated with the potentially spoofed GPS signal. The direction vector can be compared to a beamsteering vector. The potentially spoofed GPS signal can be determined as being a spoofer GPS signal when a misalignment between the direction vector and the beamsteering vector is above a defined threshold. The spoofer GPS signal can be converted to a spoofer mitigation signal that is applied to satellite track channels of the GPS receiver. The spoofer mitigation signal can produce a spatial null in a direction of the spoofer GPS signal.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: August 11, 2020
    Assignee: Raytheon Company
    Inventor: Paul H. Grobert
  • Patent number: 10715242
    Abstract: Apparatuses, methods, and systems for grouping antenna elements to enhance an antenna array response resolution, are disclosed. One method includes selecting a plurality of groups of antenna elements from an antenna array, wherein each group includes a plurality of antenna elements of the antenna array, determining an optimal phase setting for a beam directed from each group to a target device, and characterizing each of the groups including adjusting a phase of an electronic signal passing through each of the antenna elements of the group based on the optimal phase setting of the group, adjusting an amplitude ai of the electronic signal the passing through each of the antenna elements of the group to compensate for a loss of antenna array gain of the antenna array due to grouping of the antenna elements, and storing the adjusted phase and adjusted amplitude for each of the antenna element.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: July 14, 2020
    Assignee: Facebook, Inc.
    Inventors: Ahmed Gamal Helmy Mohamed, Krishna Srikanth Gomadam, Sam Padinjaremannil Alex, Walid Ali-Ahmad
  • Patent number: 10624055
    Abstract: To determine a location of a client device in a wireless network having at least first and second network devices, with known locations, one of the network devices transmits a message to the other network device and the other network device responds with an acknowledgement message. A client device receives the message and the acknowledgement message as well as respective times indicating actual times at which the message and the acknowledgement message were processed by one of the first and second network devices. The client device determines its location based on the times at which it received the message and the acknowledgement message and the difference between the actual processing times. This location may be refined by determining an angle between the client device and at least one of the network devices having multiple antennas and being configured for steered beam communications.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: April 14, 2020
    Assignee: CSR Technology Inc.
    Inventors: Naveen Kumar Kakani, Benjamin Tarlow, Erik David Lindskog, Raja Banerjea, Hong Wan, Ian Charles Blair
  • Patent number: 10608761
    Abstract: The present disclosure relates to methods and devices for Channel State Information, (CSI) prediction. More particularly the disclosure pertains to predicting CSI for a dynamic channel that is varying over time, e.g. because the receiver is moving. This object is obtained by a method performed in a first wireless node of predicting CSI of a dynamic wireless channel H between the first wireless node and a second wireless node. The method comprises deriving channel covariance estimates Ck(n), . . . , Ck(n?M) of the dynamic wireless channel H, estimating one or more channel properties of the dynamic wireless channel H, wherein one of the estimated channel properties defines a spectrum spread of the dynamic wireless channel H, and determining a covariance prediction filter, based on the estimated one or more channel properties.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: March 31, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Magnus Astrom, Bo Lincoln, Fredrik Nordstrom
  • Patent number: 10598807
    Abstract: A method for correction of a sea surface state can include receiving geophysical data from a seismic survey, wherein the seismic survey utilizes a plurality of receivers disposed in a body of water and at least one source in the body of water, actuated at a plurality of shot points. The method can include identifying, in the geophysical data, a wavefield based on the actuation of the at least one source, and determining, based on the identified wavefield, a sea surface state at the at least one source at one of the plurality of shot points.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: March 24, 2020
    Assignee: PGS Geophysical AS
    Inventors: Paul Lecocq, Edwin Thomas Hodges, Magdy Attia Sedhom
  • Patent number: 10591574
    Abstract: An array antenna includes a plurality of antennas capturing a coming radio wave and outputting a received signal respectively. An A-D converter converts the received signal to a digital signal, and a frequency detector detects a frequency of the received signal. A sparse signal processor calculates complex amplitudes, which are coefficients for base vectors, each of the base vectors expressing phases of the antennas of the array antenna receiving a radio wave coming from each direction in determined directions, used in expressing the received signal as a linear sum of a finite number of the base vectors, separates the received signal into direction signals for each direction, and calculates the phase of the each of the direction signals. A signal synthesizer aligns the phases of the direction signals using phase differences calculated from phases of the complex amplitudes, and synthesizes the direction signals.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: March 17, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hideyuki Furuhashi, Hiroaki Tsukagoshi
  • Patent number: 10560783
    Abstract: An apparatus for providing directional audio capture may include a processor and memory storing executable computer program code that cause the apparatus to at least perform operations including assigning at least one beam direction, among a plurality of beam directions, in which to direct directionality of an output signal of one or more microphones. The computer program code may further cause the apparatus to divide microphone signals of the microphones into selected frequency subbands wherein an analysis performed. The computer program code may further cause the apparatus to select at least one set of microphones of the apparatus for selected frequency subbands. The computer program code may further cause the apparatus to optimize the assigned at least one beam direction by adjusting a beamformer parameter(s) based on the selected set of microphones and at least one of the selected frequency subbands. Corresponding methods and computer program products are also provided.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: February 11, 2020
    Assignee: Nokia Technologies Oy
    Inventors: Anu Hannele Huttunen, Jorma Juhani Makinen
  • Patent number: 10551476
    Abstract: Provided are architectures, systems, methods, and computer program products for real-time object locating and position determination using frequency channel diversity for transmitting and receiving position determination signals including bursts of location signals. Channelized frequency diversity of a short burst of small location signals that “hop” across multiple frequency channels is used to collectively produce a quasi-wideband position determination signal. Object tags operating with frequency channel diversity for transmitting location signals of position determination signals require low power consumption, but can still efficiently provide adequate position determination signals for reliable position determination.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: February 4, 2020
    Assignee: Zebra Technologies Corporation
    Inventors: David S. Wisherd, James J. O'Hagan
  • Patent number: 10468047
    Abstract: A wireless digital audio system includes a portable audio source with a digital audio transmitter operatively coupled thereto and an audio receiver operatively coupled to a headphone set. The audio receiver is configured for digital wireless communication with the audio transmitter. The digital audio receiver utilizes fuzzy logic to optimize digital signal processing. Each of the digital audio transmitter and receiver is configured for code division multiple access (CDMA) communication. The wireless digital audio system allows private audio enjoyment without interference from other users of independent wireless digital transmitters and receivers sharing the same space.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: November 5, 2019
    Assignee: ONE-E-WAY, INC.
    Inventor: C. Earl Woolfork
  • Patent number: 10451731
    Abstract: A Software Defined Radio Earth Atmosphere Imaging system comprising at least one imager, which comprises: a radio wave emitter configured to emit a sky wave, a ground wave and a first time signal; a radio wave detector, the radio wave detector including a two dimensional array of radio wave receivers, the radio wave detector for receiving a carrier wave and the ground wave and transmitting a second time signal; a vector network analyzer including a Global Navigation Satellite System and at least one synchronization clock, the vector network analyzer in electrical communication with the radio emitter via a first wire and with the radio wave detector via a second wire, the wires for transmitting the time signals; a software defined radio in electronic communication with the vector network analyzer; and a computing device, the computing device in electronic communication with the vector network analyzer.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: October 22, 2019
    Inventor: Rodney Herring
  • Patent number: 10439696
    Abstract: A method and apparatus for generating a covariance matrix during adaptive beamforming of a multi-beam antenna. The method uses an upper right triangle of the covariance and time sharing of complex conjugate multipliers to efficiently compute the covariance matrix. In addition, a variable number of beams may be selected in the covariance matrix according to an operating environment of the multi-beam antenna.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: October 8, 2019
    Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: Andrew S. Baek, Thompson Truong, Othon Equihua, Kevin Kanemori
  • Patent number: 10433274
    Abstract: A method and apparatus are provided for calibrating a wireless access point comprising an array of multiple (m) antennas denoted Ai (i=1 . . . m), each antenna having a respective internal phase offset ?i. The method comprises receiving a signal from at least one transmitter located at a substantially known bearing from the wireless access point. The method further comprises determining an estimated value for each internal phase offseti such that an angle of arrival (AoA) spectrum calculated for the received signal on the basis of said estimated values matches the known bearing, wherein said AoA spectrum is calculated by treating said multiple antennas as a phased array. A method and an apparatus are also provided for calibrating a wireless access point comprising first and second arrays of multiple antennas, each antenna array having a respective radio unit, and each antenna in an array having a respective internal phase offseti.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: October 1, 2019
    Assignee: UCL Business PLC
    Inventors: Kyle Jamieson, Jon Gjengset
  • Patent number: 10416272
    Abstract: It is disclosed to obtain a frequency transformed radiomap data set by applying a discrete frequency transform to an original radiomap data set. It is also disclosed to obtain a reconstructed radiomap data set by applying an inverse discrete frequency transform to a frequency transformed radiomap data set.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: September 17, 2019
    Assignee: HERE Global B.V.
    Inventors: Lauri Wirola, Jari Syrjarinne, Jukka Talvitie, Elena-Simona Lohan
  • Patent number: 10420006
    Abstract: Methods and systems are presented in this disclosure that enable mobile devices without access to an active network connection (e.g. cellular, satellite or Internet network) to communicate between each other by sending and receiving data packets (e.g. text, location, or image) through a mesh of connected devices. A packet for forwarding is included into a mesh forwarding list at a mobile device, wherein the mesh forwarding list includes packets for forwarding to one or more mobile devices. The mobile device checks, in each packet within the mesh forwarding list, a list with at least one identifier of at least one wireless device that has already received the packet. The mobile device forwards the mesh forwarding list to the one or more wireless devices via at least one connection, based on the checked one or more identifiers.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: September 17, 2019
    Assignee: Bridgefy, Inc.
    Inventors: Jorge Luis Rios Almanza, Diego Ivan Garcia Escobedo, Roberto Betancourt Sanchez, Daniel Felipe Heredia Saucedo
  • Patent number: 10397765
    Abstract: A measurement system is provided. The measurement system comprises a device under test comprising at least one antenna, at least one measurement antenna, and a signal analysis unit. In this context, the location of the at least one antenna of the device under test is unknown with respect to the device under test, whereas the signal analysis unit is configured to perform at least one near-field measurement with respect to the device under test with the aid of the at least one measurement antenna. In addition to this, the signal analysis unit is further configured to locate the at least one antenna of the device under test on the basis of the at least one near-field measurement in order to obtain position data of the at least one antenna of the device under test.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: August 27, 2019
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Corbett Rowell, Vincent Abadie, Benoit Derat
  • Patent number: 10386447
    Abstract: The method and apparatus for angle of arrival estimation are used for estimating the angle of arrival of a received signal by a switched beam antenna array and a single receiver. The switched beam antenna array first collects an omnidirectional signal to be used as a reference signal. A main beam thereof is then switched to scan an angular region of interest. The collected signals from the switched beams are cross-correlated with the reference signal. The cross-correlation coefficient is the highest at the true angle of arrival and relatively negligible otherwise. The collected signal from each beam angle is cross-correlated with the omnidirectional reference signal to determine the angle of arrival of the received signal.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: August 20, 2019
    Assignee: Qatar University
    Inventors: Ahmed Badawy, Tamer Khattab, Daniele Trinchero, Tarek Elfouly, Amr Mohamed
  • Patent number: 10353090
    Abstract: Methods and systems for improving time-semblance processing of acoustic data are disclosed. Acoustic data is obtained from a tool in a formation. A delay filter is then designed and applied to the obtained acoustic data to obtain delayed acoustic data. Time semblance is then applied to this delayed acoustic data.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: July 16, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Burkay Donderici
  • Patent number: 10324160
    Abstract: An apparatus having processing circuitry configured to estimate beyond line-of-sight emitter location may be configured to receive signal information indicative of TDOA and FDOA measurements at a first receiver and a second receiver. The signal information may be generated based on indirect wave signals received from the emitter at each of the first and second receivers. The processing circuitry may be further configured to employ a first analytical model of the ionosphere to generate coarse TDOA and FDOA contour maps, and generate a first geolocation estimate based on the coarse TDOA and FDOA contour maps.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: June 18, 2019
    Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventors: Neil A. Jacklin, Gregory P. Richards, Joshua Markow
  • Patent number: 10305555
    Abstract: Examples described herein include systems and methods which include wireless devices and systems with examples of an autocorrelation calculator. An electronic device including an autocorrelation calculator may be configured to calculate an autocorrelation matrix including an autocorrelation of symbols indicative of a first radio frequency (“RF”) signal and a second RF signal. The electronic device may calculate the autocorrelation matrix based on a stored autocorrelation matrix and the autocorrelation of symbols indicative of the first RF signal and symbols indicative of the second RF signal. The stored autocorrelation matrix may represent another received signal at a different time period than a time period of the first and second RF signals. Examples of the systems and methods may facilitate the processing of data for wireless and may utilize less memory space than a device than a scheme that stores and calculates autocorrelation from a large dataset computed from various timepoints.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: May 28, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Fa-Long Luo, Tamara Schmitz, Jeremy Chritz, Jaime Cummins
  • Patent number: 10288432
    Abstract: The disclosed computer-implemented method for guiding users to network-enabled devices may include (i) monitoring network communications within a wireless network, (ii) determining, based on monitoring network communications transmitted over the wireless network that involve a network-enabled device connected to the wireless network, that an end user requires guidance to a physical location of the network-enabled device, (iii) deriving the physical location of the network-enabled device in three-dimensional space, and (iv) guiding, by a user interface, the end user to the physical location of the network-enabled device in three-dimensional space. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: May 14, 2019
    Assignee: Symantec Corporation
    Inventors: Ilya Sokolov, Keith Newstadt, Richard F. Andrews
  • Patent number: 10282038
    Abstract: This invention relates to methods, apparatus, and computer program code for processing acoustic signal data to determine where an object has been tapped with a stylus, finger nail or the like. The method involved storing a set of labelled training data comprising digitized waveforms from a sensor for taps at a plurality of different locations. The labelled training data is then processed to determine mean value and covariance data for the waveforms, which is afterwards used in conjunction with a digitized waveform of a tap at an unknown location to identify the location of the tap. Preferably the covariance is decomposed into a plurality of basis functions for each region each with a respective weighting, which are used to represent captured data for an unknown tap and parameters of the representation are classified to locate the tap.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: May 7, 2019
    Assignee: InputDynamics Limited
    Inventors: Simon Godsill, Giovanni Bisutti, Jens Christensen
  • Patent number: 10280285
    Abstract: Propylene-ethylene random copolymers with improved long-term mechanical properties, especially improved impact strength retention, their manufacture as well as their use, e.g. for the production of moulded articles, particularly injection moulded articles, such as thin-walled plastic containers for packaging.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: May 7, 2019
    Assignee: BOREALIS AG
    Inventors: Juliane Braun, Davide Tranchida, Jingbo Wang, Markus Gahleitner
  • Patent number: 10278190
    Abstract: Disclosed is a network node and a method performed by a network node in a wireless communication network for determining signal to noise ratio of a signal received at a receiver from a first mobile station, which signal may include both noise and interference. The method comprises obtaining a plurality of measured noise and interference power values, IN values, of signals received at the receiver in one or more frequency sub-bands, determining IN for a lowest X percentile of the measured IN values, and applying the determined IN for the lowest X percentile as a measure of the noise. The method further comprises obtaining a measured signal strength value for a signal received at the receiver from the first mobile station, and determining SNR for the signal from the first mobile station by applying the determined noise measure.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: April 30, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: David Sandberg, Björn Nordström
  • Patent number: 10236555
    Abstract: The present disclosure relates to a device for transferring signals from at least one housing opening of a housing, which is metallic at least in part, by means of electromagnetic waves of at least one specific wavelength. The device includes a transmitting/receiving unit arranged in the housing; at least one primary antenna arranged in the housing; a first secondary antenna for receiving the electromagnetic waves decoupled from the primary antenna; and a second secondary antenna for receiving the electromagnetic waves transferred from outside the housing, wherein the second secondary antenna is arranged outside the housing on the housing opening, wherein a reflection point is arranged between the first and second secondary antennas, such that an impedance jump occurs between the first and second secondary antennas.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: March 19, 2019
    Assignee: Endress+Hauser SE+Co. KG
    Inventor: Thomas Blödt
  • Patent number: 10187817
    Abstract: Aspects of the present disclosure provide techniques for efficient ranging. According to certain aspects, techniques are provided to signal the use of different resolutions of time units for parameters to be used in a ranging procedure, such as a fine timing measurement (FTM) procedure.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: January 22, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Amichai Sanderovich, Carlos Horacio Aldana
  • Patent number: 10129627
    Abstract: A wireless digital audio system includes a portable audio source with a digital audio transmitter operatively coupled thereto and an audio receiver operatively coupled to a headphone set. The audio receiver is configured for digital wireless communication with the audio transmitter. The digital audio receiver utilizes fuzzy logic to optimize digital signal processing. Each of the digital audio transmitter and receiver is configured for code division multiple access (CDMA) communication. The wireless digital audio system allows private audio enjoyment without interference from other users of independent wireless digital transmitters and receivers sharing the same space.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: November 13, 2018
    Assignee: ONE-E-WAY, INC.
    Inventor: C. Earl Woolfork
  • Patent number: 10129896
    Abstract: A method and apparatus for optimizing channel access by an access point (AP) in a wireless local area network is provided, the method comprises transmitting first information to a station, and receiving second information from the station while transmitting the first information to the station, wherein the first information and the second information includes at least one of a request to send (RTS) frame, clear to send (CTS) frame, acknowledgement information, and data, respectively.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: November 13, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Arzad Alam Kherani, Karthik Rangaraj Manavalan, Amar Prakash Azad
  • Patent number: 10082575
    Abstract: The invention relates to a method for determining the signal-to-noise ratio (20) of a target echo (11) from a received signal (UE) received from an ultrasonic sensor (3) of a motor vehicle (1), in which: a transmission signal is transmitted in encoded form, the received signal (UE) is decoded and decoding involves the received signal (UE) being correlated with a reference signal and the correlation provides a correlation signal (UK), and the target echo (11) is detected in the correlation signal (UK), wherein the signal-to-noise ratio (20) is determined by determining a value (21) of the noise in the received signal (UE) on the basis of the correlation signal (UK) and, in so doing, dividing the correlation signal (UK) into a multiplicity of signal segments (17a to 17e) and determining the value (21) of the noise solely on the basis of signal values for that one of the signal segments (17a to 17e) that contains the target echo (11).
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: September 25, 2018
    Assignee: VALEO Schalter und Sensoren GmbH
    Inventor: Michael Hallek
  • Patent number: 10063288
    Abstract: Provided are a communication device and a signal detection method capable of improving the detection accuracy for transmission signals transmitted from one or two or more transmission devices. The communication device includes a phased-array antenna, in which a plurality of antenna elements are arranged on a plane, for receiving a signal transmitted from one or two or more transmission devices; a signal converter that includes a plurality of beamformers, each of which synthesizes a received signal received at each antenna element, for each sub-array formed by grouping the plurality of antenna elements, and converts the signal synthesized for each sub-array into a baseband signal; and a signal processor for detecting a transmission signal transmitted from each of the one or two or more transmission devices, based on a baseband signal for each sub-array, which is received from each of the plurality of beamformers, for each resource block.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: August 28, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Masaaki Fujil
  • Patent number: 10057723
    Abstract: A system for managing data related to at least one leaf node device includes a location processing engine located on a server that is remote from the leaf node device, at least one point of interest (POI) device for collecting data via Bluetooth Low Energy (BLE) communication signals from the leaf node device on each of a plurality of channels and transmitting the collected data which includes phase angle information, a reader node device for receiving and transmitting the collected data to the location processing engine and a database of the known locations of a plurality of POI devices. The reader device or the location processing engine averages the collected data across the plurality of channels, and the known locations are used along with the averaged data as a basis for determining the location of the leaf node device.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: August 21, 2018
    Assignee: CloudLeaf, Inc.
    Inventors: Raghavendra Kulkarni, Sharath Narahari, Ravindar Roopreddy
  • Patent number: 9971414
    Abstract: Examples of systems, devices, and methods are described herein that can provide for gesture recognition. Wireless communication signals are received from sources in an environment (e.g. cellular telephones, computers, etc.). Features of the wireless communication signals (e.g. Doppler shifts) are extracted and utilized to identify gestures. The use of wireless communication signals accordingly make possible gesture recognition in a whole-home environment that identifies gestures performed through walls or other obstacles.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: May 15, 2018
    Assignee: University of Washington Through Its Center For Commercialization
    Inventors: Shyamnath Gollakota, Shwetak N. Patel, Qifan Pu, Sidhant Gupta
  • Patent number: 9967124
    Abstract: An example technique may include: receiving, by a mobile station from a base station, a plurality of copies of a broadcast information including a broadcast control message, wherein a copy of the broadcast information is transmitted via each of a plurality of basis function beams; determining, by the mobile station, a gain and phase value for each copy of at least a subset of the plurality of the received copies of the broadcast control message transmitted via different basis function beams. The technique may also include, for example, determining, by the mobile station, a combined broadcast control message based on at least the subset of the plurality of the received copies of the broadcast control message and the gain and phase value for each copy of at least the subset of the plurality of the received copies of the broadcast control message.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: May 8, 2018
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Timothy Thomas, Frederick Vook, Rapeepat Ratasuk
  • Patent number: 9826418
    Abstract: Some demonstrative embodiments include apparatuses, systems and/or methods of performing a Time of Flight (ToF) measurement. For example, a first wireless device may include a controller to perform a Time of Flight (ToF) measurement procedure with a second wireless device; and a radio to communicate with the second wireless device a ToF frame including a first time value of a Time Synchronization Function (TSF) of a sender of the frame to indicate a beginning time of a ToF measurement period, and a second time value of the TSF at transmission of the ToF frame.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: November 21, 2017
    Assignee: INTEL CORPORATION
    Inventors: Jonathan Segev, Gaby Prechner, Shahar Michaelovich
  • Patent number: 9814051
    Abstract: A method for signal processing includes receiving at a given location at least first and second signals transmitted respectively from at least first and second antennas of a wireless transmitter. The at least first and second signals encode identical data using a multi-carrier encoding scheme with a predefined cyclic delay between the transmitted signals. The received first and second signals are processed, using the cyclic delay, in order to derive a measure of a phase delay between the first and second signals. Based on the measure of the phase delay, an angle of departure of the first and second signals from the wireless access point to the given location is estimated.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: November 7, 2017
    Assignee: DEEYOOK LOCATION TECHNOLOGIES LTD.
    Inventor: Eran Shpak
  • Patent number: 9813094
    Abstract: A receiver and method for identifying the frequency of an RF component in an RF signal are disclosed. The receiver includes a first mixer that receives an RF signal and mixes that RF signal with a first multi-tone LO signal that includes a plurality of tones to generate a mixed signal. The output of the first mixer is filtered by a first filter that removes signals outside of a predetermined band to generate a first IF signal. A processor determines the RF frequency of the component utilizing the first IF signal and a second IF signal generated using a second multi-tone LO signal having a different plurality of tones from said first multi-tone signal. The first and second multi-tone LO signals can be generated by clocking suitable digital sequences into the mixer either by using different sequences or by using the same sequence clocked at a different rate.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: November 7, 2017
    Assignee: Keysight Technologies, Inc.
    Inventors: George Stennis Moore, Paul L. Corredoura
  • Patent number: 9805379
    Abstract: A method and a device for obtaining a customer traffic distribution are provided. The method comprises steps of: obtaining position information of mobile terminals; determining at least one cluster center in a preset range and a heat value of each cluster center according to the position information; and generating the customer traffic distribution according to the at least one cluster center and the heat values.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: October 31, 2017
    Assignee: Baidu Online Network Technology (Beijing) Co. Ltd.
    Inventors: Kaihua Wang, Suqi Lin, Zhenghai Yuan, Huijun Hu, Tingru Yin
  • Patent number: 9780987
    Abstract: An adaptable orthogonal frequency-division multiplexing system (OFDM) that uses a multiple input multiple output (MIMO) to having OFDM signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for time diversity transmission based on the result of a comparison between threshold values and at least one of three criteria. The criteria includes a calculation of a smallest eigen value of a frequency channel response matrix and a smallest element of a diagonal of the matrix and a ratio of the largest and smallest eigen values of the matrix.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: October 3, 2017
    Assignee: APPLE INC.
    Inventors: Shiquan Wu, Wen Tong, Leo Strawczynski
  • Patent number: 9715420
    Abstract: An apparatus for comparing strings comprises a first and a second set of input registers, a matrix of comparator circuits wherein rows of the matrix correspond to the first set of input registers and columns of the matrix correspond to the second set of input registers, a set of row control registers wherein each register corresponds to a row of the matrix of the comparator circuits, the matrix of comparator circuits configured to compare data provided by the first set of registers with data provided by the second set of registers according to the row control registers, and an error detection circuit configured to compare results from four comparator circuits corresponding to two adjacent rows and two columns of the matrix of comparator circuits. A method that invokes the above mentioned apparatus is also disclosed herein, along with a computer program product corresponding to the method.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: July 25, 2017
    Assignee: International Business Machines Corporation
    Inventors: James R. Cuffney, Timothy J. Koprowski, John G. Rell, Jr., Patrick M. West, Jr.
  • Patent number: 9659575
    Abstract: The signal processor suppresses noise components contained in input sound signals by iterative spectral subtraction. The processor derives coherence from first and second directional signals having directivity characteristics on the basis of a pair of input sound signals, and controls the times of iteration of spectral subtraction on the basis of the coherence, thereby suppressing the noise components contained in the input sound signals.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: May 23, 2017
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Katsuyuki Takahashi
  • Patent number: 9658312
    Abstract: A system and method for detecting the location of a mobile device within an area, uses a plurality of wireless signals sent to or received by the device to derive a first estimate of the position of the device. This position estimate is then adjusted using a probabilistic model of the area, where the area is divided into zones or regions, and where each region is assigned a weighting according to the probability of the device being located in that region taking account of the prior position of the device. By using the weightings to adjust the position estimate, false or ambiguous position estimates are discounted and the true position of the device is more reliably detected. The method also includes techniques to take account of different wireless characteristics of different devices when each is supplied with the same model.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: May 23, 2017
    Assignee: DUBLIN CITY UNIVERSITY
    Inventors: Kevin Collins, Kevin Anthony McGuinness, Noel Edward O'Connor
  • Patent number: 9654321
    Abstract: Embodiments of methods and systems for reception improvement of FM tuners are provided. An example method according to the disclosure includes receiving one or more FM broadcast signals in a common channel (Co-C) situation and provides for receiving one or more FM broadcast signals, selecting a preferred signal and outputting said signal as an IF signal. When a Co-C situation occurs, the method calculates a correlation of the one or more signals and outputs the signal showing a larger consistency value.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: May 16, 2017
    Assignee: Harman Becker Automotive Systems GmbH
    Inventors: Karl-Anton Becker, Christoph Benz, Philipp Schmauderer, Patrick Hamm
  • Patent number: 9578681
    Abstract: Some new low power architecture devices may, e.g., be associated with in a new device category in the IEEE 802.11ah Standard for devices with low power architecture. Some new low power architecture devices may only to support a subset of modulation and coding schemes (MCSs). Some new low power architecture devices negotiate the use of the subset of MCSs with an access point. Further new low power architecture devices address power consumption through modifications to the architecture of the new low power device. For instance, many new low power architecture devices remove, modify or bypass portions of the front-end transmitter circuitry and/or the front-end receiver circuitry such as a power amplifier, a low noise amplifier, predistortion circuitry, digital-to-analog and analog-to-digital converter resolutions, and stages of filtering.
    Type: Grant
    Filed: December 29, 2012
    Date of Patent: February 21, 2017
    Assignee: Intel Corporation
    Inventors: Thomas J. Kenney, Eldad Perahia, Minyoung Park, Shahrnaz Azizi
  • Patent number: 9570087
    Abstract: Techniques described herein are directed to performing back-end single-channel suppression of one or more types of interfering sources (e.g., additive noise) in an uplink path of a communication device. The back-end single-channel suppression techniques may suppress types(s) of additive noise using one or more suppression branches (e.g., a non-spatial (or stationary noise) branch, a spatial (or non-stationary noise) branch, a residual echo suppression branch, etc.). The non-spatial branch may be configured to suppress stationary noise from the single-channel audio signal, the spatial branch may be configured to suppress non-stationary noise from the single-channel audio signal and the residual echo suppression branch may be configured to suppress residual echo from the signal-channel audio signal. The spatial branch may be disabled based on an operational mode (e.g.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: February 14, 2017
    Assignee: Broadcom Corporation
    Inventors: Jes Thyssen, Bengt J. Borgstrom
  • Patent number: 9548836
    Abstract: The present disclosure is directed to a system and method for detecting burst noise. The system and method are described in the exemplary context of a cable modem system and can be used in such a system to specifically detect upstream burst noise. Once detected, the system and method can adjust the upstream receiver that receives data corrupted by the upstream burst noise to reduce the potentially deleterious effects that the burst noise can have on, for example, the packet error rate and/or data rate of the upstream receiver.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: January 17, 2017
    Assignee: Broadcom Corporation
    Inventors: Yitshak Ohana, Avi Kliger, Anatoli Shindler, Bazhong Shen
  • Patent number: 9521020
    Abstract: It is disclosed to insert an anti-whitened data block, which is obtainable from a specific data block by anti-whitening, into a data block that is to be whitened by a whitening to yield a whitened data block, wherein the anti-whitening compensates the whitening so that the whitened data block will comprise the specific data block in non-whitened form. It is further disclosed to output, in a first operating mode, an output data block generated by one of whitening and de-whitening an input data block in its entirety, and outputting, in a second operating mode, one of: an output data block generated by one of whitening and de-whitening all parts of an input data block under exclusion of a specific data block contained in the input data block.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: December 13, 2016
    Assignee: Nokia Technologies Oy
    Inventors: Antti Paavo Tapani Kainulainen, Ilari Aleksi Teikari, Ville Valtteri Ranki
  • Patent number: 9515718
    Abstract: A receiving apparatus 10 includes an adaptive array antenna 11, a reference signal synthesizer 15 that calculates a synthesized reference signal by multiplying a reference signal portion of each layer by an orthogonal signal to synthesize proximity reference signal portions of different resource elements and multiplies a known reference signal by the orthogonal signal, a weight calculator 16 that calculates an adaptive array weight from the synthesized reference signal and a known reference signal multiplied by the orthogonal signal, a weight synthesizer 17 that calculates a synthesized reception signal by multiplying the reference signal portion by the adaptive array weight to perform an antenna synthesis, a channel estimator 18 that estimates a propagation path from the synthesized reception signal and the known reference signal multiplied by the orthogonal signal, and a channel equalizer 19 that implements a channel equalization from the synthesized reception signal and the propagation path.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: December 6, 2016
    Assignee: KYOCERA Corporation
    Inventor: Toru Sahara
  • Patent number: 9503172
    Abstract: Disclosed are dual mode beamforming methods and apparatuses for the same. An exemplary embodiment of the dual mode beamforming method may comprise obtaining a boundary equation generated based on mean channel gains (MCGs) and spatial correlation coefficients (SCCs) for a plurality of antennas of a plurality of base station; obtaining, from the plurality of base stations, MCGs of respective antennas equipped in each of the plurality of base stations and a SCC of a plurality of antennas equipped in at least one base station of the plurality of base stations; and determining a beamforming mode based on the boundary equation, the MCGs and SCCs obtained from the plurality of base stations. Therefore, a co-located beamforming or a distributed beamforming can be performed selectively according to a radio communication environment.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: November 22, 2016
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YEUNGNAM UNIVERSITY
    Inventors: Kwon Hue Choi, Jin Hui Lee, Amini Sahar
  • Patent number: 9488720
    Abstract: An active and passive detection device is provided with a low probability of interception having a fixed antenna structure, transmission means and reception means. The antenna structure is formed by a plurality of radiating elements grouped into identical subnetworks and comprises at least one transmission subnetwork and at least three reception subnetworks. The transmission means are capable of generating an unfocused continuous waveform having low peak power in one plane and of transmitting said waveform. The reception means are capable of detecting the targets following the formation of a plurality of directional beams on the basis of the signals received on the reception subnetworks. The reception means are likewise capable of implementing the interception of radar signals from other radar sources using cross correlation processing between the signals received on at least three reception subnetworks.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: November 8, 2016
    Assignee: THALES
    Inventors: Pascal Cornic, Patrick Le Bihan, Stephane Kemkemian
  • Patent number: 9466869
    Abstract: Mobile communication devices, e.g., cellphones, may integrate an antenna array that includes one or more antenna to form radio beams at a preferred direction and a signal locator to identify coordinates corresponding to a strongest signal strength and direct the antenna array towards the strongest single strength.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: October 11, 2016
    Assignee: EMPIRE TECHNOOGY DEVELOPMENT LLC
    Inventors: Li Tian, Xuefeng Yin