Utilizing Correlation Techniques Patents (Class 342/378)
  • 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: 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: 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: 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
  • Patent number: 9453725
    Abstract: A method for quantitative measurement of surface accuracy of an area is provided. This comprises directing a monochromatic flat light wave towards a predefined surface area, recording an image of the reflected light with a camera and lens system focused on said surface area, and deducing surface accuracy parameters from the recorded image. The method is characterized in that said surface accuracy parameters are determined by obtaining a Fourier transform of the recorded image. Then, fitting predetermined Fourier components to a Fourier spectrum of said Fourier transform, wherein said Fourier components are determined along the major and across the minor elongation axes of the Fourier transform as at least a large Gaussian component, and a peak of the spectrum. Followed by, determining surface accuracy parameters of said surface area from said Fourier components.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: September 27, 2016
    Assignee: QSO Interferometer Systems AB
    Inventor: Lars Baath
  • Patent number: 9379791
    Abstract: Multiple input multiple output (MIMO) communication systems and methods for chip to chip and intrachip communication are disclosed. In one aspect, MIMO techniques that have been applied to wireless communication systems are applied to interchip and intrachip communication systems. In particular, a transfer function is applied at the transmitter, and a reverse transfer function is applied at the receiver. The transfer function dynamically changes based on channel conditions to cancel or otherwise mitigate electromagnetic interference (EMI) and crosstalk conditions. In an exemplary aspect, a sum of power levels across the channels may have a maximum. To abide by such power level constraint, the transfer function may be optimized to reduce interference while remaining within the power level constraint.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: June 28, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: RaviKiran Gopalan, Danlu Zhang
  • Patent number: 9354067
    Abstract: Disclosed are systems, methods, and devices for aligning a path of movement of a mobile device with an indoor routing graph. In one particular embodiment, a mobile device may trace a path of movement from a starting point to a point of intersection with a routing graph that defines feasible movement within an area. Responsive to a detecting a point of intersection, a mobile device may estimate a contiguous route from one or more locations of the routing graph to a starting point.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: May 31, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Hui Chao, Saumitra Mohan Das, Jiajian Chen
  • Patent number: 9338686
    Abstract: Method for operating a wireless network, wherein at least one MIMO (Multiple Input Multiple Output) group of different stations will be constructed by a grouping algorithm based on a grouping metric for providing a MIMO group of different stations addressable simultaneously in space by a base station using MIMO techniques and meeting a definable level of performance quality, the grouping metric being based on an SINR (Signal-to-Interference and Noise Ratio) experienced by each station within the MIMO group. The method includes: computing an SNR (Signal-to-Noise Ratio) that a new station would experience without any interference when added to an existing MIMO group; computing an SINR estimate by correcting the SNR with the sum of spatial correlations between the new and each of the stations already present in the existing MIMO group; and using the SINR estimate for deciding whether the new station can be added to the existing MIMO group.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: May 10, 2016
    Assignee: NEC EUROPE LTD.
    Inventors: Anatolij Zubow, Johannes Marotzke, Daniel Camps Mur, Xavier Perez Costa
  • Patent number: 9310458
    Abstract: A method for calculating a spacing between antenna elements of an interferometer array antenna includes setting an azimuth of an instantaneous field of view and a distance between phase differences, and obtaining the number of phase difference lines and phase difference vectors with respect to the phase differences of the signals output in a phase comparator of a direction finder, performing a modular arithmetic for the phase difference vectors to obtain phase difference matrixes, obtaining a transformation matrix for linearly transforming the phase difference matrixes and performing the linear transformation using the transformation matrix, calculating a distance between the phase differences on a new axis generated by the linear transformation, and calculating an antenna spacing as an array spacing of the array antenna, the antenna spacing meeting that the distance between the phase differences is greater than a desired distance between phase differences.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: April 12, 2016
    Assignee: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Jung Hoon Lee, Jeung Min Joo
  • Patent number: 9288844
    Abstract: Methods and systems for configuring an access point (AP) are provided. According to one embodiment, a dual radio AP includes: two radios, a first operating at 2.4 GigaHertz (GHz) or 5 GHz and a second operating at 5 GHz; first and second directional antennas coupled to the first and second radios, respectively; first and second transmit queues buffering packets for transmission by the first and second radios, respectively; a location determination module configured to compute locations of recipient devices of the packets; a direction identification module configured to calculate angles to direct the directional antennas based on the computed locations; an interference detection module configured to determine whether interference would take place if the packets are transmitted based on the calculated angles and estimated timing of transmission; and a transmission module configured to transmit the packets without interference between the directional antennas by rescheduling packets if necessary.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: March 15, 2016
    Assignee: Fortinet, Inc.
    Inventors: Koroush Akhavan-Saraf, Jose Luis Villarreal Reverte
  • Patent number: 9282396
    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: February 25, 2013
    Date of Patent: March 8, 2016
    Assignee: One-E-Way Inc.
    Inventor: C. Earl Woolfork
  • Patent number: 9258051
    Abstract: An Adaptive Polarization Array (APA) Algorithm is described for analyzing a wireless signal transmitted by an entity to determine a received polarization of the received wireless signal at a non-coherent receiver. The APA Algorithm determines a transmit polarization state for a transmitter to transmit signals to the entity based in part on the determined received polarization. The transmitter is an arbitrary-polarized transmitter configured to transmit signals at any polarization.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: February 9, 2016
    Assignee: LHC2 INC
    Inventors: Timothy Leonard Hillstrom, Robert J. Conley
  • Patent number: 9160437
    Abstract: A wireless communication device includes: a plurality of antennas receiving signals transmitted from one or more transmission antennas; a synthesis calculation unit performing a synthesis calculation of respective reception signals received by the plurality of antennas and reception weights corresponding to respective antenna ports; a channel estimation unit calculating respective estimated channel values from respective synthesized signals obtained by the synthesis calculation for the respective antenna ports, and a decoding unit performing decoding from the respective estimated channel values and the synthesized signals for the respective antenna ports.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: October 13, 2015
    Assignee: KYOCERA Corporation
    Inventors: Hiromi Ajima, Toru Sahara, Minako Kitahara, Tomohiro Suzuki, Keisuke Sanagi, Shunsaku Kikuchi, Takashi Matsumura
  • Patent number: 9154971
    Abstract: Disclosed are systems, methods and devices for obtaining round trip time measurements for use in location based services. In particular implementations, a fine timing measurement request message wirelessly transmitted by a first transceiver device to a second transceiver device may permit additional processing features in computing or applying a signal round trip time measurement. Such a signal round trip time measurement may be used in positioning operations.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: October 6, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Carlos Horacio Aldana, Sandip Homchaudhuri, Xin He, Xiaoxin Zhang, Ashish Kumar Shukla
  • Patent number: 9124460
    Abstract: Certain aspects of the present disclosure relate to a technique for multiplexing data of different access categories in Multi User Multiple Input Multiple Output (MU-MIMO) wireless systems. The present disclosure defines rules for multiplexing data of an access category that did not win the contention together with data that won the contention. In this way, a desired Quality of Service (QoS) of each access category class can be preserved.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: September 1, 2015
    Assignee: QUALCOMM, Incorporated
    Inventors: Simone Merlin, Santosh Paul Abraham
  • Patent number: 9116227
    Abstract: A radar apparatus includes a phased array receiver, with a steerable receive beam. The receiver elements are grouped into subarrays, which each provide a subarray signal to a mixer. The mixer signals are then used by a DBF algorithm to determine narrow virtual beams within the receive beam. The receive beam is used to obtain radar data from sectors of the field of view, and the sectors may be approximately as wide as the receive beam. The order in which sectors are examined may be determined by the sector importance, related to the presence, nature, and/or behavior of previously tracked targets within each sector.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: August 25, 2015
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Jae Seung Lee, Paul Donald Schmalenberg
  • Patent number: 9113343
    Abstract: A method of determining the location of a mobile device is provided. The method receives a signal with a known radio transmission pattern at the mobile device from each of several transmitting devices. The method correlates each received signal with a corresponding signal that has a same known radio transmission pattern to determine the time the signal traveled between the corresponding transmitting device and the mobile device. The method determines the location of the mobile device based on the time the signal travelled between the corresponding transmitting device and the mobile device. In some embodiments, determining the location of the mobile device does not require calculating a distance between the mobile device and any of the transmitting devices. In some embodiments determining the location of the mobile device includes solving a function that is dependent on the time the signals traveled between each corresponding transmitting device and the mobile device.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: August 18, 2015
    Assignee: GOLBA LLC
    Inventor: Mehran Moshfeghi
  • Patent number: 9107000
    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 24, 2012
    Date of Patent: August 11, 2015
    Assignee: One-E-Way, Inc.
    Inventor: C. Earl Woolfork
  • Patent number: 9081083
    Abstract: Accurate and computationally efficient estimation of time delay of arrival data for localization of a sound source is described herein. A number of independent time delays are retained and validated through comparison with a set of dependent time delays. The method is robust against detrimental effects in the environment such as noise and reverberation. The resulting delays may then be used in sound source localization or other signal processing applications.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: July 14, 2015
    Assignee: Amazon Technologies, Inc.
    Inventor: Wai C. Chu
  • Patent number: 9063220
    Abstract: An object information acquiring apparatus including: a plurality of receiving elements receiving an acoustic wave propagating from an object and converting the acoustic wave into an electrical signal; a delaying unit aligning phases of electrical signals of M (a positive integer) channels outputted from the plurality of receiving elements; an eliminator reducing the electrical signals of the M channels to electrical signals of L channels (L<M); a calculator calculating Nb output signals corresponding to low-frequency components of a complex signal based on the electrical signals outputted from the eliminator; and a signal processor performing beam formation according to adaptive signal processing using output signals outputted from the calculator, where positive integers M, L, and Nb satisfy M>L>=2(Nb?1).
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: June 23, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Haruo Yoda, Kenichi Nagae, Katsuya Oikawa
  • Patent number: 9059770
    Abstract: A system and methods for cancelling spatial interference associated with an original multi-carrier signal carrying at least one data transmission sent by a transmitter to an antenna array comprising a plurality of antennae and having a receiver operatively associated therewith, the system receiving a plurality of received signals respectively including interference and the original signal as received by a respective individual antenna from among the plurality of antennae, the system comprising a spatial nulling device for generating a cleaner signal by reducing at least one spatial component of the interference; and a signal manipulator operative to manipulate a derivative of the received signal so as to cause the at least one data transmission to be more concentrated in a subset of frequency bands in which the spatial nulling device is more effective and to be less concentrated in frequency bands which do not belong to the subset of frequency bands.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: June 16, 2015
    Assignee: ELTA SYSTEMS LTD.
    Inventors: Gil Koifman, Yaakov Shoshan
  • Patent number: 9035762
    Abstract: A method and system for determining a location of a first device that emits a signal: provide at least three sensors separated and spaced apart from each other; at each of the sensors, receive the signal emitted by the first device; determine the received signals for each of the sensors; determine cross-correlations of the received signals for pairs of the sensors; and determine the location of the first device from the magnitudes of the cross-correlations of the received signals.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: May 19, 2015
    Assignee: Keysight Technologies, Inc.
    Inventors: Robert Thomas Cutler, Deitrich Werner Vook, Andrew David Fernandez
  • Patent number: 9008243
    Abstract: An approach is provided for correcting a reference clock of a GPS receiver. The approach involves determining one or more frequency offset values. The approach also involves determining one or more codes associated with one or more satellites. The approach further involves determining a second code associated with the one or more satellites. The approach additionally involves determining one or more delay values between the second code and the one or more first codes. The approach also involves determining one or more proportional values based on the one or more delay values and a determined correlation. The approach further involves determining one or more correlation peak values and determining one or more estimated frequency offset error values based on the one or more correlation peak values. The approach additionally involves causing a calibrated reference clock frequency value to change to a recalibrated reference clock frequency value based on the estimated frequency offset error values.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: April 14, 2015
    Assignee: Intel Corporation
    Inventors: Anthony L. Chun, Yi Lin