Sum Of Each Antenna Signal Patents (Class 342/383)
  • Patent number: 10819404
    Abstract: A wireless apparatus includes a first weight multiplication part, a channel estimation part, a channel response conversion part, and a second weight generation part. The first weight multiplication part includes first weights, each of which corresponds to an individual one of a plurality of beams, and multiplies a signal(s) corresponding to a reference signal(s) transmitted from a wireless terminal(s) by the first weights. The channel estimation part estimates first channel responses for the respective beams by using the signals obtained by the multiplication by the first weights. The channel response conversion part converts the first channel responses into second channel responses by using the first weights. The second weight generation part generates second weights used for wireless communication with the wireless terminal(s) by using the second channel responses.
    Type: Grant
    Filed: May 28, 2018
    Date of Patent: October 27, 2020
    Assignee: NEC CORPORATION
    Inventors: Jun Shikida, Naoto Ishii
  • Patent number: 10778332
    Abstract: A system for enabling signal penetration into a building comprising first circuitry, located on an exterior of the building, for receiving signals at a first frequency that experiences losses when penetrating into an interior of the building and converting the received signals at the first frequency into a first format that overcome losses caused by penetrating into the interior of the building over a wireless communications link. A first patch antenna array associated with the first circuitry transmits the signals in the first format into the interior of the building via a wireless communications link and for receives signals from the interior of the building in the first format via the wireless communications link.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: September 15, 2020
    Assignee: NXGEN PARTNERS IP, LLC
    Inventor: Solyman Ashrafi
  • Patent number: 10728839
    Abstract: A method of transmitting includes categorizing a transmission between the first device and a second device as one of a plurality of transmission types, and selecting an air interface from a plurality of air interface candidates in accordance with the transmission as categorized. The method also includes sending the transmission to the second device using the selected air interface.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: July 28, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jianglei Ma, Peiying Zhu, Ming Jia, Wen Tong
  • Patent number: 10708790
    Abstract: There is provided mechanisms for adaptive beamforming scanning. A method is performed by a network device having a non-uniform directional network coverage. The method comprises obtaining a beam pattern indicating spatial directions in which reception of identification signals is to be scanned, wherein the beam pattern is defined by the non-uniform directional network coverage.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: July 7, 2020
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Zhan Zhang, Jinhua Liu, Jianfeng Wang
  • Patent number: 10700419
    Abstract: The present invention relates to an active antenna system comprising a plurality of antennas (2), a radio equipment (3) connected to the antennas (2) and being located adjacent to the antennas (2), wherein the radio equipment (3) comprises for each antenna (2) a separate transceiver module (12).
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: June 30, 2020
    Assignee: Global Invest Properties Holding AG
    Inventors: Clemens Rheinfelder, Michael Tauber
  • Patent number: 10651795
    Abstract: A method and a device for amplifying an input signal include a power amplifier for amplifying a binary input signal, a modulation device for generating the binary input signal on the basis of the input signal, the input signal being a complex-valued signal and the binary input signal being a real-valued signal, the modulation device including an adding device configured to add the complex-valued input signal to a complex-valued carrier signal of a predefined frequency and to thus generate a resulting complex-valued signal, and the modulation device including a combination device connected downstream from the adding device and configured to generate the real-valued binary input signal from the real part and the imaginary part of the resulting complex-valued signal by combining the real part and the imaginary part of the resulting complex-valued signal.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: May 12, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Hung-Anh Nguyen, Wilhelm Keusgen
  • Patent number: 10644767
    Abstract: Disclosed in the present invention are a method and a device for transmitting channel state information, for solving the problem that due to the limitation of a codebook structure, the prior art can only provide channel state information with limited precision and it is not suitable for a base station to use a transmission scheme of an advanced preprocessing algorithm. The method comprises: a terminal determining a basis matrix according to a candidate wave beam vector set, the basis matrix being a matrix formed by N wave beam vectors from the candidate wave beam vector set, the N being a positive integer; the terminal determining a combined coefficient matrix according to the basis matrix and a channel state parameter; the terminal feeding back the identification information of the basis matrix and the combined coefficient matrix to a base station.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: May 5, 2020
    Assignee: China Academy of Telecommunications Technology
    Inventors: Qiubin Gao, Runhua Chen, Tamrakar Rakesh, Hui Li, Qiuping Huang
  • Patent number: 10545246
    Abstract: Disclosed is a technique that can provide one or more countermeasures against spoofers. A beamformer can control an antenna pattern of a CRPA to generate a survey beam. The survey beam is swept across space to determine a characteristic signature based on carrier-to-noise ratios (C/No) for particular space vehicle signals. Matching C/No signatures can be used to identify the existence of spoofers and invoke a countermeasure, such as nulling.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: January 28, 2020
    Assignee: Interstate Electronics Corporation
    Inventors: Ivan L. Johnston, Gilberto Isaac Sada, Steven B. Alexander
  • Patent number: 10542485
    Abstract: A base station transmits first discovery signals in different transmission directions from the base station through beamforming; transmits, for one or more first transmission directions corresponding to one or more first discovery signals reported from the mobile station, second discovery signals in second transmission directions within a predetermined range from the first transmission direction; and, for transmitting the second discovery signal, transmits the second discovery signal by multiplying, by a correction precoding vector for adding, to the first transmission direction, a transmission angle difference between the first transmission direction within the predetermined range from the second discovery signal and a second transmission direction of the second discovery signal to be transmitted, and by performing beamforming for the second discovery signal to which the correction precoding vector is multiplied, using a first weight matrix for beamforming in the first transmission direction within the prede
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: January 21, 2020
    Assignee: NTT DOCOMO, INC.
    Inventors: Tatsunori Obara, Satoshi Suyama, Tatsuki Okuyama, Yukihiko Okumura
  • Patent number: 10536207
    Abstract: An apparatus and a method for configuring antenna arrays for scalable radio frequency (RF) architecture are disclosed. A subset of antenna arrays are grouped into K groups and a receive or transmit weight vector is applied to each of the antenna arrays in each of the K groups. A channel response is measured for each of the antenna in the K groups. The response is summed for each group and complex scaling factors are calculated based on the summed response. Based on the scaling factors the antenna weight vectors are updated and the updated weight vectors are applied to the antenna arrays. The steps of grouping the antennas and refining the weight vectors are performed till the antenna weight vectors reach a steady point, i.e. the current antenna weight does not improve the beamforming gain by a predetermined threshold in comparison to the previous antenna weight.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: January 14, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Shi Cheng, Keangpo Ricky Ho
  • Patent number: 10454718
    Abstract: The present disclosure discloses a method used in a control node and an associated control node. The control node controls a serving radio node in a wireless communication network and the serving radio node serves one or more client radio nodes which are connected to the serving radio node via one or more links. The method includes determining to apply a sounding and sensing related configuration for the serving radio node in each link of the one or more links, if at least one link related parameter of the link satisfies a first predefined condition; and transmitting an enablement signal to the serving radio node, the enablement signal indicating enabling application of the sounding and sensing related configuration in the link. The present disclosure further discloses a method used in a serving radio node under control of a control node and an associated serving radio node. Moreover, the present disclosure discloses another method used in a control node and an associated control node.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: October 22, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jinhua Liu, Gen Li
  • Patent number: 10270508
    Abstract: Methods and systems for communication between a network base station and a remote device are disclosed. Disclosed methods include providing, at a base station coupled to the network, a modulated signal to mixers in a retro-directive metamaterial antenna, and receiving an RF transmission beam from the remote device, at the retro-directive metamaterial antenna, and radiating from the antenna a modulated retro-directed beam, using mixer products, directed toward the remote device.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: April 23, 2019
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Donna L. Polehn, Fred Weisbrod
  • Patent number: 10224642
    Abstract: A modular antenna system and a method for signal processing using the modular antenna system are provided to overcome the missing scalability of conventional antenna arrays and improve the overall antenna array performance as well as facilitate individually replacing defective or not reliably operating radio-units or radio-subunits in modular antenna array systems and provide a calibration procedure which can be adapted to a scalable antenna array. The modular antenna system includes a base station, and at least one radio-unit comprising at least two radio-subunits. Each radio-subunit includes a radio-module and an antenna-module. The radio-module includes a digital signal-processing unit, at least a transceiver, a front-end and a power amplifier. The radio-subunits provide an identical architecture and are modularly connected together via a connector interface and each radio-subunit has an own IQ-input and an own IQ-output.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: March 5, 2019
    Assignee: AIRRAYS GMBH
    Inventors: Volker Aue, Michael Grieger, Albrecht Fehske
  • Patent number: 10101445
    Abstract: A system for signal processing is provided that obviates the use of prior-knowledge, such as synthetic aperture radar (SAR) imagery, in time compressed signal processing (i.e. it can be knowledge unaided). The knowledge-unaided power centroid (PCKU) is found by evaluating a covariance matrix RSCM for its moments mi. Because RSCM uses a sample signal, rather than SAR data, the power centroid PCKU may be found without needing SAR data.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: October 16, 2018
    Assignee: Research Foundation of the City University of New York
    Inventor: Erlan Feria
  • Patent number: 9954587
    Abstract: A technology for an enhanced node B (eNB) that is operable to perform beamforming using multiple-input multiple-output (MIMO) in a cellular network. One or more user equipment (UEs) can be configured to use a same or different multiple port (multi-port) channel state information reference signal (CSI-RS) pattern. Feedback reports can be received from the one or more UEs associated with the multi-port CSI-RS pattern at the eNB. A UE-specific or more UEs at the eNB using the feedback report from the one or more UEs.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: April 24, 2018
    Assignee: Intel IP Corporation
    Inventors: Yuan Zhu, Qinghua Li, Xiaogang Chen, Hooman Shirani-Mehr
  • Patent number: 9917658
    Abstract: Embodiments relate to a concept for testing a transceiver device (302) which may be coupled to an antenna array (312), the antenna array (312) comprising at least two an antenna elements. It is provided (204) spatial radiation characteristics of an antenna reference or the antenna array (312) and at least one antenna element of the antenna array. It is determined (206), based on the spatial radiation characteristics and a predefined test quantity for a spatially unaware receiver or transmitter test of the transceiver device (302), a spatially aware test quantity for testing the transceiver device (302) using the spatially unaware receiver or transmitter test based on the determined spatially aware test quantity.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: March 13, 2018
    Assignee: Alcatel Lucent
    Inventors: Teck Hu, Thomas Bitzer, Henning Martens, Kurt Weese, Thomas Weese, Martina Weese
  • Patent number: 9787386
    Abstract: An access point of a wireless communication network forms beams by applying a weightset for a beamforming weights matrix to signal streams. The Equivalent Isotropic Radiated Power (EIRP) that is emitted from an array of antenna elements at the access point is controlled by calibrating the transmission phase and gain of a respective transmit chain for each antenna element, providing a polar radiation model for an antenna element of the array, and determining a weightset for the weighting matrix subject to a constraint that a maximum total EIRP for the beams in combination in any azimuth direction is maintained within a predetermined EIRP limit, based at least on a spatial separation of the antenna elements, the polar radiation model and the calibrated transmission phase and gain of each respective transmit chain.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: October 10, 2017
    Assignee: Cambium Networks Ltd
    Inventor: Peter Strong
  • Patent number: 9750027
    Abstract: A method and an apparatus for operating a transmitter in a millimeter wave communication system is provided. In the method, information of a common and/or control channel is mapped to a dedicated frequency region of a dedicated Radio Frequency (RF) path. Data is mapped to a common frequency region for a common RF path.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: August 29, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae-Young Kim, Ji-Yun Seol, Hyun-Kyu Yu, Su-Ryong Jeong
  • Patent number: 9577343
    Abstract: A method and apparatus configures a beamforming coefficient based on the signal strength information without collecting channel information by adjusting the phase of the antennas through random perturbation. An antenna control method of a base station in a wireless communication system using a beamforming technique includes measuring nth received signal strength at nth phase of at least one receive antenna, measuring (n+1)th received signal strength at (n+1)th phase shifted randomly from the nth phase in one of forward and backward directions, and configuring a beamforming coefficient with the phase at which the received signal strength is greatest through comparison of received signal strengths. The random perturbation-based beamforming method and apparatus of the present disclosure is capable of configuring the beamforming coefficient appropriate for the normal cellular environment using a plurality analog array antenna without channel estimation overhead.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: February 21, 2017
    Assignees: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Jeongho Park, Jiyun Seol, Yonghoon Lee, Minhyun Kim, Sungjin Kim, Uitae Hwang
  • Patent number: 9484976
    Abstract: An assembly, a method of operating the assembly and antennas for use in the assembly, where two or more antennas (16, 18) each is adapted to output an output signal with one of two or more characteristics, only one antenna outputting a signal with a predetermined characteristic, such as a non-zero amplitude, whereby the output signals from the antennas may simply be added/summed while enabling selection of the signal with the predetermined characteristic using e.g. a simple filter.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: November 1, 2016
    Assignee: Thrane & Thrane A/S
    Inventor: Svend Stave
  • Patent number: 9443503
    Abstract: The present invention compensates output variability caused by the difference in the performance of and the individual difference between converter devices when processing the signals inputted by means of a converter device, and performs highly-accurate signal processing. The present invention is provided with an input means which inputs an input signal through a converter device, a memory means which stores a minimum value of a reference signal inputted through a reference converter device, a comparison means which compares a minimum value of the input signal and the minimum value of the reference signal, and a modification means which modifies the input signal in accordance with the comparison result of the comparison means.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: September 13, 2016
    Assignee: NEC CORPORATION
    Inventor: Akihiko Sugiyama
  • Patent number: 9341698
    Abstract: A radio interference locator includes a detector circuit having a directional antenna defining a boresight along which electromagnetic radiation is preferentially accepted. The antenna is coupled to a signal detector which generates an electrical signal from a selected radio-frequency (RF) spectral band of the electromagnetic radiation accepted by the antenna. A processor determines the boresight direction at prescribed sample times as well as an associated signal characteristic, such as a signal level of the electrical signal, measured at the sample times. Data are presented that indicate the signal characteristic for the associated boresight direction at each of the sample times. A mobile platform connects the detector circuit and the processor so that they can be freely oriented in space in fixed mechanical formation by a single human operator.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: May 17, 2016
    Assignee: Exelis Inc.
    Inventor: Randell S. Sierens
  • Patent number: 9258049
    Abstract: The communication device includes: a phased array antenna having a plurality of antenna elements arranged on a plane for receiving signals transmitted from one or more transmitting devices; a signal converter for combining signals received through antenna elements for each sub-array and converting the combined signal for each sub-array into a baseband signal, the each sub-array being grouped from the plurality of antenna elements; a signal processor for decoding playback data based on respective baseband signals for sub-arrays in each resource block and detecting an error of the decoded playback data; and an orientation controller for controlling orientation of the phased array antenna based on the base band signals for the sub-arrays and a signal of a resource block with the playback data having no error.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: February 9, 2016
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Masaaki Fujii
  • Patent number: 9121923
    Abstract: A Wide Area Sensor Network (WASN) is disclosed that utilizes wideband software defined radios (SDRs) to monitor RF energy over a wide frequency range, detect when critical frequencies are being jammed or otherwise interfered with, and locate the source of the interference so that the interference can be eliminated. The WASN may use one or more geolocation techniques In addition, the WASN may detect and locate unauthorized transmitters as well as estimate the transmitted power of authorized transmitters to assure they are not transmitting more power than authorized.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: September 1, 2015
    Assignee: TruePosition, Inc.
    Inventors: Jeffrey F. Bull, Matthew L. Ward
  • Patent number: 9113426
    Abstract: In a method and a device a time-varying back-off value is used whereby differences in cell load can be taken into account for a restricted time-period during which the information is believed to be valid. Also, other time-varying variables of interest for the initial DPCCH power setting of the secondary earner can be taken into account when setting the back-off value.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: August 18, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Johan Hultell, Johan Bergman
  • Patent number: 9065552
    Abstract: A method of transmitting a signal based on multi-stream CPDMA may include: allocating a plurality of data symbols to each of a plurality of data streams based on a frequency hopping pattern; applying a DFT function and a M-times repetition function to the data symbol allocated to the each of the plurality of data streams; applying a spectral weighting vector to the each of the plurality of data streams applying the DFT function and the M-times repetition function; and generating the signal based on the multi-stream CPDMA by performing an IDFT function and a cyclic prefix adding procedure with respect to the plurality of data streams to which the spectral weighting vector is applied, in which the spectral weighting vector is a vector for determining a frequency band in which the each of the plurality of data streams is used.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: June 23, 2015
    Assignees: LG ELECTRONICS INC., POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Ki Jun Kim, Joon Ho Cho, Yeo Hun Yun, Jeong Ho Yeo, Min Uk Kim, Eun Ae Lee, Ju Bum Kim
  • Patent number: 9048915
    Abstract: A method and apparatus for splitting signals received via a plurality of antennas. A signal split apparatus of the present disclosure includes a first antenna which receives a first input signal, a second antenna which receives a second input signal, a first phase shifter which shifts phase by applying a first modulation frequency to the first input signal, a second phase shifter which shifts phase by applying a second modulation frequency to the second input signal, a summer which sums the phase-shifted first and second input signals, and an analog-digital converter which converts the summed signal to a digital signal, wherein the first and second modulation frequencies are different from each other. The signal split apparatus and method of the present disclosure is capable of splitting signals efficiently.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: June 2, 2015
    Assignees: SAMSUNG ELECTRONICS CO., LTD, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sanghyouk Choi, Dongmin Park, Heeseong Yang, Joohwan Chun
  • Patent number: 9024818
    Abstract: Communication systems and methods are disclosed. A number of interference sources are obtained based on received signals. A communication is performed using a plurality of antennas and a transmission directivity of the antennas is controlled when transmitting signals. At least null-steering from among null-steering and beam-forming is performed in relation to the transmission directivity of the antennas, when the number of interference sources is less than a first threshold value. Only the beam-forming is performed from among the null-steering and the beam-forming in relation to the transmission directivity of the antennas, when the number of interference sources is greater than the first threshold value.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: May 5, 2015
    Assignee: Kyocera Corporation
    Inventor: Tetsuo Okamoto
  • Patent number: 8902840
    Abstract: An approach is provided for supporting transmission in a multi-input-multi-output (MIMO) communication system including a plurality of terminals. A preamble portion of a frame is transmitted by a multiple transmit antennas of a hub using Orthogonal Frequency Division Multiplexing (OFDM) to the terminals over a channel, wherein each of the terminals determines a characteristic of the channel with respect to the transmit antennas as feedback information. The hub receives the feedback information from the terminals. The hub selects, according to the feedback information, a subset of the antennas for transmission of a remaining portion of the frame to the terminal.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: December 2, 2014
    Assignee: The DIRECTV Group, Inc.
    Inventors: Jian Song, Khalid Karimullah
  • Patent number: 8779979
    Abstract: Described herein is a multi-antenna signal receiving device that includes a plurality of reception antennas that is capable of maximizing a diversity gain while eliminating a multi-path interference (MPI). The device receives a first received signal of a first antenna that includes components corresponding to a plurality of first paths and the device receives a second received signal of a second antenna that includes components corresponding to a plurality of second paths. The multi-antenna signal receiving device detects a component corresponding to a first path among the plurality of first paths, and a component corresponding to a second path among the plurality of second paths.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: July 15, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Tetsuhiko Miyatani
  • Patent number: 8773307
    Abstract: A novel wide null forming system achieves both wide bandwidth and beam width null through employing an antenna array to receive and transmit signals to which a complex null weight vector, calculated by perturbation program, is applied. The novel wide null forming system includes a multiple-element antenna array for receiving or transmitting signals. Multiple conditioning units matching the number of elements is present to condition the signals for proper reception and analysis, after which a series of complex multiplier processors adds complex weights. After being weighted each constituent beam is combined in an adding processor to form one composite beam for use by the user.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: July 8, 2014
    Assignee: Spatial Digital Systems, Inc.
    Inventors: Donald C. D. Chang, Yulan Sun, Yuanchang Liu
  • Patent number: 8774196
    Abstract: The present disclosure relates to an active antenna array for a mobile communications network. The active antenna comprises a base band unit coupled to a base station, a plurality of transceiver units and at least one link. The plurality of transceiver units is terminated by at least one antenna element. The at least one link couples individual ones of the plurality of transceiver units to the base band unit 10. The at least one link is a digital link and is adapted to relay an individual transmit signal concurrently and in synchronisation with a transmit clock signal. The present disclosure further teaches a method for relaying radio signals in a mobile communications network. The present disclosure further relates to a computer program enabling a computer to manufacture the active antenna array of the present disclosure and to execute the method of relaying radio signal in a mobile communications system.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: July 8, 2014
    Assignee: Kathrein-Werke KG
    Inventors: Georg Schmidt, Johannes Schlee
  • Patent number: 8755367
    Abstract: A reception system including a receiver of superheterodyne type coupled to a processing means, the receiver including N antennas. Said receiver includes: N translation means, each being able to frequency translate signals delivered by the antenna considered, from a frequency sub-band of the span of interest to a restricted frequency band, and to frequency multiplex the signals belonging to said frequency sub-band; N first intermediate frequency bandpass filters, of bandwidth equal to said restricted frequency band, respectively coupled at the output of each translation means, and able to filter the translated and multiplexed signals; a coupling means able to sum the N filtered signals so as to deliver the set of summed signals via N outputs.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: June 17, 2014
    Assignee: Thales
    Inventors: Daniel Jahan, Cedric Cornu
  • Patent number: 8643543
    Abstract: A phased array antenna system with intermodulation beam nulling device includes nulling phase shifters.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: February 4, 2014
    Assignee: The Aerospace Corporation
    Inventors: James P. McKay, David A. Ksienski
  • Patent number: 8614644
    Abstract: Embodiments of the invention provide systems and methods for systems and methods for adaptively canceling interfering signals generated by a transmission antenna. Under one aspect, a system includes: an auxiliary antenna co-located with the main antenna, the auxiliary antenna configured to transmit an auxiliary signal to the victim antenna; a sensing antenna located on a line-of-sight path between the transmission antenna and the victim antenna, the sensing antenna configured to receive a composite of the interference and the auxiliary signal, and to output a first signal based on the received composite; a controller comprising an input coupled to the sensing antenna and configured to receive the first signal, the controller being configured to adjust at least one of an amplitude, a phase, a polarization, and a frequency characteristic of the auxiliary signal based on the first signal so as to reduce the composite of the interference and the auxiliary signal received by the sensing antenna.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: December 24, 2013
    Assignee: The Aerospace Corporation
    Inventors: Robert B. Dybdal, Keith M. SooHoo, Samuel J. Curry
  • Patent number: 8599861
    Abstract: The present disclosure teaches an active antenna array for a mobile communications network. The active antenna array comprises a base band unit, a plurality of transceiver units terminated by at least one antenna element; and at least one link. The link couples the individual ones of the plurality of transceiver units to the base band unit. The link is a digital link and is adapted to relay a payload signal at a selectable payload rate. The digital link is further adapted to relay a timing signal at a fixed timing rate, when the timing signal is embedded in the payload at a selectable payload rate. The present disclosure further teaches a method for relaying radio signals and a computer program for manufacturing the active antenna array and for executing the method.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: December 3, 2013
    Assignee: KATHREIN-Werke KG
    Inventors: Georg Schmidt, Johannes Schlee
  • Patent number: 8582694
    Abstract: The present invention provides a high-performance adaptive digital receiver with adaptive background control that optimizes the performance in rapidly changing signal environments and provides 3.6 GH; instantaneous bandwidth, SFDR>90 dB, SNR=66 dB, with dynamic digital channelization. The receiver takes advantage of several levels of adaptivity that conventional approaches do not offer. In addition to a dynamic digital channelizer that is adaptively tuned based on detected signals, the present invention employs a powerful software reconfigurable digitizer that is adaptively optimized for the current signal environment to control important receiver parameters such as bandwidth, dynamic range, resolution, and sensitivity.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: November 12, 2013
    Inventors: Scott R. Velazquez, Rich J. Velazquez
  • Patent number: 8508410
    Abstract: Adaptive antenna beamforming may involve a maximum signal-to-noise ratio beamforming method, a correlation matrix based beamforming method, or a maximum ray beamforming method. The adaptive antenna beamforming may be used in a millimeter-wave wireless personal area network in one embodiment.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: August 13, 2013
    Assignee: Intel Corporation
    Inventors: Alexander Maltsev, Roman Maslennikov, Alexey Khoryaev
  • Patent number: 8446318
    Abstract: Methods, devices, and systems for controlling a beamforming antenna with reconfigurable parasitic elements is provided.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: May 21, 2013
    Inventors: Shirook Ali, James Warden
  • Patent number: 8401133
    Abstract: A multi-antenna system using adaptive beamforming includes a phase shift unit, a signal combination unit, a frequency down-converter, and an analog-to-digital (A/D) converter, and a beamforming control unit. The phase shift unit includes a plurality of phase shifters which shift the phases of signals received from a plurality of antennas. The signal combination unit combines phase-shifted signals output from the plurality of phase shifters. The frequency down-converter down-converts a signal output from the signal combination unit into a baseband signal. The A/D converter converts the baseband signal into a digital signal. The beamforming control unit searches for a weight vector higher than a preset threshold signal-to-noise ratio (SNR) when a reception SNR of the digital signal output from the A/D converter is lower than the threshold SNR, and changes a currently set weight vector into the searched weight vector to provide to the phase shift unit.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: March 19, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Chul Gyun Park, Young Chai Ko, Kyung Tae Jo, Joun Sup Park
  • Patent number: 8289901
    Abstract: Techniques are provided to determine channel assignments for wireless access point (AP) devices in a wireless local area network (WLAN). From each of a plurality of AP devices operating at least one of a plurality of channels in the WLAN, wireless activity data is received that represents activity in each channel associated with signals of devices operating in the WLAN and associated with signals and energy from devices that are not operating in the WLAN as detected by the AP devices by receiving radio frequency energy in each of the plurality of channels.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: October 16, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Predrag Tosic, Sandeep Jay Shetty, Douglas Chan
  • Patent number: 8254988
    Abstract: A first device transmits a training signal with a fixed beam pattern, a second device receives the training signal while scanning a beam direction, and then it obtains first AWVs each having a main beam or sub-beam beam direction in an incoming direction in the second device. Next, the first device transmits a training signal while scanning a beam direction, the second device receives the training signal with a fixed beam pattern, and then it obtains second AWVs each having a main beam or sub-beam direction in an emitting direction in the first communication device. The roles of these two devices are interchanged and similar processes are performed in order to obtain third and fourth AWVs, and then one of first AWV combinations from first and second AWVs and one of second AWV combinations from third and fourth AWVs are used for wireless communication between these devices.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: August 28, 2012
    Assignee: NEC Corporation
    Inventors: Kenichi Hosoya, Kenichi Maruhashi, Naoyuki Orihashi
  • Patent number: 8243706
    Abstract: An approach is provided for supporting transmission in a multi-input-multi-output (MIMO) communication system including a plurality of terminals. A preamble portion of a frame is transmitted by a multiple transmit antennas of a hub using Orthogonal Frequency Division Multiplexing (OFDM) to the terminals over a channel, wherein each of the terminals determines a characteristic of the channel with respect to the transmit antennas as feedback information. The hub receives the feedback information from the terminals. The hub selects, according to the feedback information, a subset of the antennas for transmission of a remaining portion of the frame to the terminal.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: August 14, 2012
    Assignee: The DIRECTV Group, Inc.
    Inventors: Jian Song, Khalid Karimullah
  • Patent number: 8224271
    Abstract: An electronic device (200,300) comprising an antenna arrangement with first and second antenna groups with first (122, 142) and a second (124, 144) radiation elements. The first and second radiation elements in each group have first and second respective polarizations and gain, and said groups also comprise a beam forming network (126, 146) connected to the radiation elements of the group and to an output selector (150). The beam forming network (126, 146) of each antenna group uses the radiation elements (122, 124; 142, 144) in the group to create a radiation pattern (127, 147) with a polarization which is a composite of the first and second polarizations of the elements in the group, so that a first (127) and a second (147) radiation pattern of composite polarization is created. The output selector (150) selects or combines signals received by the two antenna groups as its output.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: July 17, 2012
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Patrik Persson, Martin Nils Johansson, Anders Stjernman, Sven Anders Gösta Derneryd, Jonas Fridén
  • Publication number: 20120176272
    Abstract: It is an object of the present invention to provide a system with which 3-dimensional position can be accurately measured. Plural UWB transmitter-receivers (1), periodically transmitting PN codes of M system and preliminarily disposed on known positions are provided, a server (3) to synchronize the plural UWB transmitter-receivers (1) is provided, an RF tag (T), attached to a moving object (20) as to receive signals (I0) synchronously and periodically transmitted from the UWB transmitter-receivers (1) and reflect the signals (I0) adding inherent tag recognition signal, is provided, and the UWB transmitter-receiver (1) is composed as to obtain the distance to the moving object (20) attached with the RF tag (T) by synchronous summation and correlative calculation of the PN codes of M system reflected by the RF tag (T).
    Type: Application
    Filed: April 26, 2010
    Publication date: July 12, 2012
    Inventors: Seiichiro Hirata, Nobuo Nakajima, Shogo Ida, Harumasa Hojo
  • Patent number: 8126504
    Abstract: A method of controlling a wireless communication system including a plurality of communication devices is disclosed. In the method, firstly, one of the communication devices establishes a fixed beam pattern and transmits a training signal, and another communication device receives the training signal while scanning a beam direction by changing the AWVs of an antenna array. Next, it obtains a data string describing a relation between an incoming direction and a received-signal characteristic at the other communication device based on a reception result of the training signal. Then, it obtains first AWVs with which a beam is formed in a plurality of incoming directions of the received signal based on the data string. The roles of these two communication devices are interchanged and similar processes are performed in order to obtain second AWVs, and then one of AWV combinations combining first and second AWVs are used for wireless communication between these communication devices.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: February 28, 2012
    Assignee: NEC Corporation
    Inventors: Kenichi Hosoya, Kenichi Maruhashi, Naoyuki Orihashi
  • Patent number: 8115678
    Abstract: According to one embodiment, generating an array correlation matrix includes interfacing with an antenna system that has antenna elements. The antenna elements receive incoming signals, and each antenna generates a response signal in response to receiving the signals. The following is performed for a number of iterations to yield summed signals: controlling weights of the antenna elements to weight the response signals; and receiving a summed signal comprising a sum of the weighted signals. An array correlation matrix is generated from the summed signals.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: February 14, 2012
    Assignee: Raytheon Company
    Inventor: Carlos R. Costas
  • Patent number: 8111191
    Abstract: Embodiments of the invention include a method to control an antenna pattern of a wideband array antenna wherein a wideband array antenna unit comprising the wideband array antenna and transforming means is accomplished. Embodiments of the invention further include the corresponding wideband array antenna unit and transforming means arranged to control an antenna pattern of an antenna system. The separation between antenna elements in the wideband array antenna can be increased to above one half wavelength of a maximum frequency within a system bandwidth when the array antenna is arranged to operate with an instantaneously wideband waveform.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: February 7, 2012
    Assignee: Saab AB
    Inventor: Kent Falk
  • Patent number: 8106827
    Abstract: An adaptive array control device is described. The adaptive array control device includes a first array processing section and a second array processing section in which phase responses are almost opposite with respect to a target signal and a signal incoming from another direction. The adaptive array control device further includes a control signal generation section, and a control section. The control signal generation section calculates a control signal using output signals of the first array processing section and the second array processing section. The control section controls speed and accuracy of parameter adjustment in adaptive array processing using the control signal. An adaptive array controlling method, and a computer readable recording medium storing an adaptive array controlling program are also described.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: January 31, 2012
    Assignee: NEC Corporation
    Inventor: Akihiko Sugiyama
  • Patent number: 8013792
    Abstract: Method and apparatus for minimizing antenna backside signal response and ambiguity in low frequency applications, particularly low frequency synthetic aperture radar (SAR). Various time delay elements are selectably switched into the signal path so as to cause a null to be placed in the antenna response pattern in the direction of undesired radar returns. The means for selectably switching may be dithered so as to introduce modulation onto the undesired radar return to aid in the discrimination and removal of the undesired radar return from the SAR image during post processing.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: September 6, 2011
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Daniel McCarthy, Dean Paschen, Lary Eichel, Frank Pratt