Class / Patent application number | Description | Number of patent applications / Date published |
342367000 | Including directive communication system | 64 |
20080218413 | MILLIMETER-WAVE COMMUNICATION STATIONS WITH DIRECTIONAL ANTENNAS AND METHODS FOR FAST LINK RECOVERY - Embodiments of millimeter-wave communication stations with directional antennas and methods for fast link recovery are generally described herein. Other embodiments may be described and claimed. In some embodiments, a transmitting station retransmits a packet in an adjacent direction when an acknowledgement is not received from a receiving station after a number of retransmission attempts. In other embodiments, a receiving station changes its reception to an adjacent direction when a packet is not received from a transmitting station after a number of missed reservations. | 09-11-2008 |
20080291086 | POSITION DETERMINATION USING AVAILABLE POSITIONING TECHNIQUES - A radio device that is capable of positioning itself using one or more available positioning techniques includes a selection parameter defined to enable selection of at least one of the available positioning techniques supported by the radio device for use in calculating the location of the radio device. At least one of the positioning techniques supported by the radio device is a broadcast positioning technique that uses broadcast radio signals broadcast from radio stations to calculate the location of the radio device. | 11-27-2008 |
20080297413 | Slotted Sectored Scheduling with Steerable Directional Antennas in Wireless LANS - A method includes determining for each access point and each associated client that has traffic to exchange with the access point in either directions of a link a pattern of slots of times that causes minimum interference to clients of other access points in a wireless local area network; deriving a conflict graph of pair wise patterns of different access points representing which patterns conflict on a particular client, the conflict graph representing which patterns of the slots cannot be scheduled simultaneously in a slot so as to avoid interference; and generating a schedule for each access points in the slots such that no two conflicting patterns for two different access points are scheduled in the same slot. | 12-04-2008 |
20080309554 | SUPPRESSING INTERFERENCE USING BEAMFORMING OF UPLINK SIGNALS RECEIVED AT MULTIPLE BASE STATIONS - The present invention provides a method for suppressing interference using beamforming of uplink signals received at multiple base stations. The method may include accessing information indicative of a plurality of signals received over a plurality of uplink channels between a plurality of mobile units and a plurality of base stations. The method may also include forming a plurality of weighted signals by applying a plurality of beamforming weights to the plurality of signals. The plurality of beamforming weights are determined based on estimates of the channels from the plurality of users to the plurality of base stations and estimated interference between the signals. The method may further include combining subsets of the plurality of weighted signals associated with each of the plurality of mobile units. | 12-18-2008 |
20090015472 | METHOD OF TRANSMIT BEAMFORMING FOR MULTICASTING IN A WIRELESS COMMUNICATION SYSTEM - The present invention provides a method of determining a plurality of beamforming weights for application to multicast transmission to a plurality of users by a corresponding plurality of antennas associated with a base station. One embodiment of the method includes determining a covariance matrix associated with the plurality of users. The covariance matrix is determined based on a channel matrix and a noise-plus-interference vector associated with each user. The method also includes determining the plurality of beamforming weights based on a gradient of the covariance matrix associated with a selected one of the plurality of users and storing the plurality of beamforming weights. | 01-15-2009 |
20090015473 | ADAPTIVE ARRAY ANTENNA SYSTEM AND METHOD OF CONTROLLING DIRECTIVITY THEREOF - An adaptive array antenna is disclosed which permits the circuit scale to be reduced by omitting a down-converter, an AD converter, and interconnects for them while controlling the directivity well. In one aspect, the array antenna comprises phase shift-amplitude control modules which accept signals received by antenna elements via an analog-to-digital converter. The value of any one of phase-amplitude change modules is set to 1. The values of the other phase-amplitude change modules are set to 0. Thus, the signal from any one antenna element is accepted. This sequence of operations is repeated as many times as there are antenna elements, whereby signals received by all the antenna elements can be accepted. | 01-15-2009 |
20090051591 | Broadcast receiving apparatus - With a power supply provided for a smart antenna, whether the antenna is connected is determined according to whether the power supply is connected. When it is determined that the smart antenna is not connected, power supply to units related only to controlling of the smart antenna is stopped, whereby power saving is realized. Further, user's setting for discriminating kinds of antennas becomes unnecessary and, when a smart antenna is not connected, power supply for the same can be prevented. | 02-26-2009 |
20090079631 | METHOD FOR DATA EXCHANGE BETWEEN MILITARY AIRCRAFT AND DEVICE FOR CARRYING OUT THIS METHOD - A device for user data transmission implemented in an aircraft for transmitting user data to a relay aircraft. The device includes a controllable directional antenna arrangement and an antenna steering module that is structured and arranged to control radiation properties and transmitting power of the antenna arrangement. Moreover, the device includes an antenna orientation module and a threat management system. Additionally, the device includes an optimization device. Furthermore, the threat management system and the optimization device are associated with the antenna steering module and the optimization device receives a desired radiation profile from the threat management system and a desired direction range of an antenna lobe from the antenna orientation module. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way. | 03-26-2009 |
20090128410 | Method, apparatus and computer readable medium providing power allocation for beamforming with minimum bler in an MIMO-OFDM system - A method for allocating power for beamforming is described. The method includes selecting a number of data streams to be employed. Power for beamforming is allocated to the selected number of data streams based upon the effective SINR and in consideration of a FEC code. The allocation of power may be based upon maximizing the effective SINR. Additionally, the method may include determining an effective SINR using an EESM procedure. An apparatus, computer readable medium and system are also described. | 05-21-2009 |
20090153400 | METHOD AND DEVICE FOR TRANSMITTING SIGNALS IN A WIRELESS COMMUNICATION SYSTEM, RECEIVING DEVICE FOR RECEIVING SIGNALS IN A WIRELESS COMMUNICATION SYSTEM, WITH A SPECIAL FRAME STRUCTURE - The present invention relates to a method for transmitting signals in a wireless communication system, in which signals are transmitted from a first communication device to a second communication device, said signals being transmitted in consecutive frames, each frame having a preamble section including preamble information, at least one of said first and said second communication devices having a narrow beam antenna which is adapted to be steered to different positions, each of said different positions corresponding to one of a number of different transmissions paths from said to said second communication device, including the steps of transmitting and receiving a first preamble section including preamble information enabling the estimation of a channel quality of a current transmission path, while said narrow beam antenna is in a current position corresponding to said current transmission path, steering said narrow beam antenna from said current position to a different position corresponding to a candidate transmission path, and transmitting and receiving a second preamble section including preamble information enabling the estimation of a channel quality of said candidate transmission path while said narrow beam antenna is in said different position. The present invention further relates to a corresponding transmission device as well as a receiving device. | 06-18-2009 |
20090160707 | Beamforming in MIMO Systems - A beamforming method comprises transmitting a training sequence from a transmitter array employing a set of beamforming vectors from a beamforming codebook. A receive array employs a combining codebook to acquire channel state information from the received transmissions, and estimates a preferred beamforming vector and a preferred combining vector. At least the preferred beamforming vector (and, optionally, the preferred combining vector) is transmitted back to the transmitter array. | 06-25-2009 |
20090213007 | APPARATUS AND METHOD FOR TRANSMITTING COEXISTENCE BEACON PROTOCOL IN A COGNITIVE RADIO SYSTEM - An apparatus and method for transmitting Coexistence Beacon Protocol (CBP) in a cognitive radio system are provided. The apparatus includes a detector, a controller, and a transmitter. The detector scans channels on which neighboring Base Stations (BSs) operate through a plurality of directional antennas. The controller links the plurality of directional antennas with BSs, respectively. The transmitter receives a CBP packet through the directional antenna linked with the BS, and transmits the received CBP packet to at least one or more other BSs linked with at least one or more other directional antennas. | 08-27-2009 |
20090219207 | SIGNAL RECEIVING SYSTEM - A variable directivity antenna ( | 09-03-2009 |
20090231194 | TRANSMITTING DEVICE, RECEIVING DEVICE AND METHOD FOR ESTABLISHING A WIRELESS COMMUNICATION LINK - The present invention comprises a method for establishing a wireless communication link between a first communication device ( | 09-17-2009 |
20090256747 | SIGNAL RECEIVING SYSTEM - A variable directivity antenna ( | 10-15-2009 |
20100156721 | MILLIMETER-WAVE INDOOR WIRELESS PERSONAL AREA NETWORK WITH CEILING REFLECTOR AND METHODS FOR COMMUNICATING USING MILLIMETER-WAVES - Embodiments of an indoor millimeter-wave wireless personal area network and method are described. In some embodiments, a directional antenna ( | 06-24-2010 |
20100231451 | ANTENNA DEVICE - An antenna device has a linear antenna element; a passive element section provided in proximity to the antenna element; and a control section that controls the passive element section. The passive element section has a linear line laid in parallel to the antenna element; and an impedance adjustment section that adjusts impedance of the passive element section. A compact antenna device capable of switching its directivity by means of electrical operation can be provided. | 09-16-2010 |
20100245173 | WIRELESS SENSOR NETWORK SYSTEM, INFORMATION GATHERING APPARATUS, SENSOR DEVICE, AND CONNECTION METHOD FOR USE IN WIRELESS SENSOR NETWORK - A wireless sensor network system includes a plurality of sensor devices each having a non-directional antenna, and an information gathering apparatus having an adaptive array antenna and gathering information detected by the plurality of sensor devices. Each sensor device includes a transmitter to transmit a transmission request for connecting to the information gathering apparatus. The information gathering apparatus includes, a first directivity-changing section that, when the information gathering apparatus receives a transmission request from an unconnected sensor device, performs one of changing the adaptive array antenna to be non-directional, and changing a directivity of the adaptive array antenna, and that receives a signal transmitted from one of the unconnected sensor device and the unconnected sensor device and a connected sensor device, and a second directivity-changing section to change the directivity in accordance with a reception state of the signal. | 09-30-2010 |
20100277368 | Multi-Pattern Wireless Frame Transmission - Multi-pattern transmission of wireless frames. A digital device contains a transmitter feeding an electronically steerable antenna system where the radiation pattern produced by the antenna system may be selected. Different antenna radiation patterns are used in transmitting a first portion of a wireless frame and a second portion of a wireless frame in a wireless digital network. In one embodiment, a first portion of a wireless frame is transmitted using a wide radiation pattern while the second portion of the frame is transmitted using a second radiation pattern. Switching among radiation patterns in the electronically steerable antenna system may be accomplished by switching between antenna types, such as an omnidirectional antenna for the wide pattern, and beam-steered or sectorized antennas for the second radiation pattern. Beam-forming and/or phasing approaches may also be used. The first and second portions of the frame may be transmitted at different power levels. For high throughput (HT) frames such as IEEE 802.11n frames, the non-HT preamble and L-Sig are taken as the first portion of the frame, with the HT-Sig, HT-training and HT-data portions of the frame taken as the second portion of the frame, transmitted using a narrower radiation pattern. | 11-04-2010 |
20100309049 | DIRECTIONAL DATA DISTRIBUTION - A system for facilitating wireless communication in an apparatus that may be triggered by the realization of data for wireless transmission. A determination may then be made as to whether the data is intended for transmission to a certain recipient (e.g., a specific apparatus) or in a specific direction. The data may then be transmitted using directional wireless communication if a wireless transport is determined to be usable for transmitting the data in a direction based on the previous determination. If directional wireless communication is not available, the data may be transmitted via omnidirectional communication. | 12-09-2010 |
20110122025 | ANTENNA ADJUSTMENT APPARATUS, ANTENNA ADJUSTMENT METHOD AND TANGIBLE MACHINE-READABLE MEDIUM THEREOF - An antenna adjustment apparatus, an antenna adjustment method and a tangible machine-readable medium thereof are provided. The antenna adjustment apparatus is electrically connected to a directional antenna and is configured to generate a signal loss value according to an environmental coordinate parameter, an antenna coordinate parameter, an excitation parameter set and an antenna structure parameter. The antenna adjustment apparatus is configured to determine whether the signal loss value meets a communication quality condition and set an excitation parameter set, which meets the communication quality condition, as an available excitation parameter set so that the antenna radiation pattern of the directional antenna may be adjusted according to the available excitation parameter set. | 05-26-2011 |
20110148703 | SYSTEM AND METHOD FOR HIGHLY DIRECTIONAL ELECTRONIC IDENTIFICATION AND COMMUNICATION AND COMBAT IDENTIFICATION SYSTEM EMPLOYING THE SAME - An antenna for directional electronic communication and a directional communication system are provided. In one embodiment, the antenna includes: (1) a conductive shield having an opening at an end thereof and a radio frequency absorptive material located on an inner surface thereof, (2) a Luneberg lens located within said conductive shield and (3) a radio frequency signal conveyor located proximate a portion of said Luneberg lens that is distal from said opening. | 06-23-2011 |
20110279319 | Communication Device, Communication Control Method and Communication System - To enable high-speed learning of an antenna directionality to be used for millimeter-wave communication, there is provided a communication device including a first radio communication unit capable of radio communication in accordance with a first communication method, and a second radio communication unit capable of radio communication in accordance with a second communication method using a higher frequency band than the first communication method, in which, upon receiving an instruction signal instructing to learn a beam directionality, the first radio communication unit determines a reception start time point of a beam reference signal based on the instruction signal, and the second radio communication unit starts reception of the beam reference signal from the reception start time point determined by the first radio communication unit and determines a parameter value for specifying an optimum beam pattern based on the received beam reference signal. | 11-17-2011 |
20110316743 | METHOD AND SYSTEM FOR VESSEL AUTHENTICATION AND LOCATION VALIDATION - A method of and system for vessel authentication and location validation. The method includes detecting a radio transmission from a target vessel in a vessel control area; determining a time and date of the radio transmission; generating a triangulated geographical location of the radio transmission; extracting a maritime mobile service identity from the radio transmission; extracting from the radio transmission a frequency, a power level and a waveform of the radio transmission; and authenticating or not authenticating the target vessel based on the triangulated geographical location and one or more of the frequency of the radio transmission, the power level of the radio transmission and the waveform of the radio transmission. | 12-29-2011 |
20110316744 | COMMUNICATION APPARATUS AND COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM - By effectively utilizing the beam pattern used at the time of the last communication, a directional link can be efficiently established, thereby reducing overhead. When establishing a link, a communication apparatus | 12-29-2011 |
20120326927 | APPARATUS AND METHOD FOR ENHANCING WIRELESS MESH NETWORK COMMUNICATIONS - A wireless mesh network includes at least one data collection device. The wireless mesh network also includes a plurality of directional antennas operatively coupled to each other and the at least one data collection device. The wireless mesh network is configured to transmit information with a data rate of approximately 250 Kilobits per second (Kbits/sec) or less, and at a frequency of approximately 2.4 GigaHertz (GHz) or less. | 12-27-2012 |
20130093623 | WIRELESS COMMUNICATION DEVICE, COMMUNICATION METHOD AND STORAGE MEDIUM - A wireless communication device forms a second directivity response pattern having a null value in the direction of a main lobe of a first directivity response pattern, and communicates with a communication partner device by using the first directivity response pattern and the second directivity response pattern. | 04-18-2013 |
20140077994 | METHOD AND SYSTEM FOR 60 GHZ ANTENNA ADAPTATION AND USER COORDINATION BASED ON BASE STATION BEACONS - Information may be communicated between two or more wireless devices via adaptive or steered antennas or antenna systems and | 03-20-2014 |
20140077995 | Electronically Beam-Steerable Antenna Device - An electronically beam-steerable antenna device comprises a dielectric lens having at least one flat surface, a high frequency dielectric board, a plurality of at least one primary antenna element with at least one transmission line formed on the high frequency dielectric board, and a switching network electrically connected to the said plurality of at least one primary antenna element and at least one transmission line and adapted to apply electric power to the at least one primary antenna element. The switching network is a semiconductor integrated circuit mounted in or on the high frequency dielectric board, and the high frequency dielectric board with the plurality of at least one antenna element and at least one transmission line formed thereon is adjacent to the flat surface of the dielectric lens. | 03-20-2014 |
20140118190 | METHOD AND APPARATUS FOR TUNING A COMMUNICATION DEVICE - A system that incorporates teachings of the present disclosure may include, for example, a non-transitory computer-readable storage medium including computer instructions to obtain at least one operational parameter associated with a communication device and to adjust a steerable antenna of the communication device when the communication device does not satisfy an impedance threshold, where the satisfying of the impedance threshold is determined based on the at least one operational parameter. Additional embodiments are disclosed. | 05-01-2014 |
20140139372 | BEAM DIRECTION SELECTION METHOD AND APPARATUS FOR USE IN BEAMFORMING SYSTEM - A method and apparatus for selecting a beam direction is for use in a beamforming system. The beam direction selection method of a reception device having a plurality of antenna elements in a wireless communication system using beamforming according to the present disclosure includes acquiring a first reception beam angle estimated as optimal by allocating a first predetermined number of antenna elements to each of beam ports and scanning signals and acquiring a second reception beam angle estimated as optimal by allocating a second predetermined number of antenna elements, which is greater than the first predetermined number, to some of the beam ports and scanning the signals using the first reception beam angle. The beam selection apparatus and method of the present disclosure is capable of selecting a reception beam direction efficiently in a beamforming system. | 05-22-2014 |
20140159955 | ADAPTIVE SIDELOBE SUPPRESSION OF RADAR TRANSMIT ANTENNA PATTERN - A system for adaptively generating a sidelobe null in a radar transmit antenna pattern by positioning a small air vehicle along the radial of the sidelobe to be suppressed. The air vehicle is fitted with a receiver and antenna facing the radar, as well as a GPS device for maintaining the designated position. The vehicle further includes a communication link to the processor of the main radar transmitter to form a closed loop that enables adjustment of the attenuators and phase shifters of the auxiliary channel(s) to suppress signals transmitted in the sidelobe to be nulled. The com link may be replaced by a suitable transponder. | 06-12-2014 |
20140159956 | MULTI-BEAM MULTI-RADIO ANTENNA - An antenna system ( | 06-12-2014 |
20140184445 | MODAL ADAPTIVE ANTENNA USING PILOT SIGNAL IN CDMA MOBILE COMMUNICATION SYSTEM AND RELATED SIGNAL RECEIVING METHOD - One or more input signals are used to generate a Pseudo noise generator and re-inject the signal to obtain a more efficient method of control of a receiver using adaptive antenna array technology. The antenna array automatically adjusts its direction to the optimum using information obtained from the input signal by the receiving antenna elements. The input signals may be stored in memory for retrieval, comparison and then used to optimize reception. The difference between the outputs of the memorized signals and the reference signal is used as an error signal. | 07-03-2014 |
20140184446 | RANDOM PERTURBATION-BASED BEAMFORMING METHOD AND APPARATUS FOR USE IN MOBILE COMMUNICATION SYSTEM - 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 n | 07-03-2014 |
20140210665 | Angle of arrival and/or range estimation within a wireless communication device - Angle of arrival and/or range estimation within a wireless communication device. Appropriate processing of communications received by a wireless communication device is performed to determine the angle of arrival of the communication (e.g., with respect to some coordinate basis of the wireless communication device). Also, appropriate processing of the communications may be performed in accordance with range estimation as performed by the wireless communication device to determine the distance between the transmitting and receiving wireless communication devices. There are two separate modes of packet processing operations that may be performed: (1) when contents of the received packet are known, and (2) when contents of the received packet are unknown. The wireless communication device includes a number of antenna, and a switching mechanism switches from among the various antennae capitalizing on the spatial diversity of the antennae to generate a multi-antenna signal. | 07-31-2014 |
20140218236 | USE OF LOCATION INFORMATION IN MULTI-RADIO DEVICES FOR MMWAVE BEAMFORMING - A system and method are provided for using location services available from other radios in a multi-radio system to assist a beamforming mechanism, particularly in establishing and maintaining mmWave communication link. A majority of wireless client devices for use in a mmWave communication link are equipped with multiple radios. Many of the “other” radios include technologies that support location based services, including GPS, Wi-Fi and cellular communications. One or more non-mmWave in one device is used to provide relative location information regarding the other device with which the mmWave communication link is to be established. The relative location information is used to derive a direction for communication, and to compute beamforming parameters, in a limited set of transmit/receive sectors where the destination device is likely to be found, in order to streamline the beamforming process. | 08-07-2014 |
20140253380 | ACTIVE RETRODIRECTIVE WIRELESS COMMUNICATION APPARATUS - An active retrodirective wireless communication apparatus is provided. The active retrodirective wireless communication apparatus can extend a communication range by enabling communication with a wide area user who is not able to communicate via an omnidirectional antenna, by alternately operating a plurality of active retrodirective antennas during a time interval for performing omnidirectional communication among a plurality of local area users, and a time interval for performing directional communication to a specific wide area user. | 09-11-2014 |
20140266889 | EXTENDING BEAMFORMING CAPABILITY OF A COUPLED VOLTAGE CONTROLLED OSCILLATOR (VCO) ARRAY DURING LOCAL OSCILLATOR (LO) SIGNAL GENERATION THROUGH FREQUENCY MULTIPLICATION - A method includes separating phase of Local Oscillator (LO) signals generated by individual Voltage Controlled Oscillators (VCOs) of a coupled VCO array through varying voltage levels of voltage control inputs thereto. The method also includes frequency multiplying an output of each individual VCO of the coupled VCO array to increase a range of phase differences between the phase separated LO signals generated by the individual VCOs. Further, the method includes mixing the frequency multiplied outputs of the individual VCOs with signals from antenna elements of an antenna array to introduce differential phase shifts in signal paths coupled to the antenna elements during performing beamforming with the antenna array. | 09-18-2014 |
20140266890 | EXTENDING BEAMFORMING CAPABILITY OF A COUPLED VOLTAGE CONTROLLED OSCILLATOR (VCO) ARRAY DURING LOCAL OSCILLATOR (LO) SIGNAL GENERATION THROUGH A CIRCULAR CONFIGURATION THEREOF - A method includes separating phase of Local Oscillator (LO) signals generated by individual Voltage Controlled Oscillators (VCOs) of a coupled VCO array through varying voltage levels of voltage control inputs thereto. The method also includes coupling the individual VCOs of the coupled VCO array to one another in a closed, circular configuration to increase phase difference between the phase separated LO signals generated by the individual VCOs compared to a linear configuration of the coupled VCO array. Further, the method includes mixing outputs of the individual VCOs of the circular coupled VCO array with signals from antenna elements of an antenna array to introduce differential phase shifts in signal paths coupled to the antenna elements during performing beamforming with the antenna array. | 09-18-2014 |
20140266891 | PHASE SHIFT BASED IMPROVED REFERENCE INPUT FREQUENCY SIGNAL INJECTION INTO A COUPLED VOLTAGE CONTROLLED OSCILLATOR (VCO) ARRAY DURING LOCAL OSCILLATOR (LO) SIGNAL GENERATION TO REDUCE A PHASE-STEERING REQUIREMENT DURING BEAMFORMING - A method includes injecting a reference input signal into each Voltage Controlled Oscillator (VCO) of a number of VCOs forming a coupled VCO array to reduce a level of injection energy required therefor. The reference input signal is configured to control operating frequency of the coupled VCO array. The method also includes utilizing a phase shift circuit: between individual VCOs of the coupled VCO array and/or in a path of injection of the reference input signal into one or more VCO(s) of the individual VCOs, and mixing outputs of the number of VCOs with signals from antenna elements of an antenna array to introduce differential phase shifts in signal paths coupled to the antenna elements during performing beamforming with the antenna array. Further, the method includes reducing a phase-steering requirement of the coupled VCO array during the beamforming based on the utilization of the phase shift circuit. | 09-18-2014 |
20140266892 | EXTENDING BEAMFORMING CAPABILITY OF A COUPLED VOLTAGE CONTROLLED OSCILLATOR (VCO) ARRAY DURING LOCAL OSCILLATOR (LO) SIGNAL GENERATION THROUGH ACCOMMODATING DIFFERENTIAL COUPLING BETWEEN VCOs THEREOF - A method includes implementing a coupled Voltage Controlled Oscillator (VCO) array with a number of VCOs, and mixing Local Oscillator (LO) signals generated through the number of VCOs of the coupled VCO array with signals from antenna elements of an antenna array to introduce differential phase shifts in signal paths coupled to the antenna elements during performing beamforming with the antenna array. The method also includes accommodating differential coupling between the VCOs to improve immunity to noise and/or interference during the beamforming compared to the VCOs accommodating single-ended coupling therebetween. | 09-18-2014 |
20140266893 | ADAPTIVE TRANSMIT ARRAY FOR BEAM-STEERING - A method includes receiving a remote transmitter signal at an antenna array including a number of antenna elements, mixing the received signal with in-phase and quadrature-phase Local Oscillator (LO) signals from Voltage Controlled Oscillators (VCOs) of a coupled VCO array, and configuring each Phase Locked Loop (PLL) of a number of PLLs to receive an in-phase output of the mixing corresponding to a VCO and a quadrature-phase output of the mixing corresponding to another VCO adjacent to the VCO as inputs thereto. The method also includes feeding back an output of the each PLL to the VCO, driving the in-phase and the quadrature-phase outputs of the mixing from a transmit modulator, and transmitting, in a direction of the remote transmitter, an antenna array signal based on the driving. Further, the method includes sensing a servoed state related to LO phase relationships and holding thereof during the transmission of the signal. | 09-18-2014 |
20140266894 | AUTOMATIC HIGH-RESOLUTION ADAPTIVE BEAM-STEERING - A method includes pointing a receive beam of a retro-directive antenna array attracted to a jammer circuit instead of a remote transmitter away from the jammer circuit toward the remote transmitter by a first angle based on coarse manual means therefor implemented in electronic circuitry associated with the retro-directive antenna array. The electronic circuitry includes a number of mixers, each of which is configured to mix a Local Oscillator (LO) signal generated from a Voltage Controlled Oscillator (VCO) with a signal received at an antenna element of the retro-directive antenna array. The method also includes automatically fine pointing the receive beam toward the remote transmitter by a second angle following the coarse pointing thereof by the first angle such that the receive beam exactly points to, and tracks, the remote transmitter. The automatic fine pointing is effected through a secondary automatic servo loop implemented in the electronic circuitry. | 09-18-2014 |
20140266895 | Novel Wide Null Forming System with Beam forming - 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. | 09-18-2014 |
20140285378 | ANTENNA, USER TERMINAL APPARATUS, AND METHOD OF CONTROLLING ANTENNA - An antenna is provided. The antenna includes a first radiator, a second radiator, a current feeder configured to supply power to at least one of the first radiator and the second radiator, and an adjuster configured to adjust transceiving directions of electromagnetic waves transmitted and received to and from the first radiator and the second radiator to be perpendicular to each other. | 09-25-2014 |
20140292577 | CONTROL METHOD OF RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION SYSTEM, AND RADIO COMMUNICATION APPARATUS - A communication device | 10-02-2014 |
20140327576 | SYSTEMS AND METHODS FOR MULTI-BEAM ANTENNA ARCHITECTURES FOR ADAPTIVE NULLING OF INTERFERENCE SIGNALS - Various embodiments described herein are directed to methods and systems for multibeam adaptive antenna architectures for recovering user signals in the coverage area of the antenna in the presence of interference sources. For example, various embodiments may utilize an architecture comprised of an array of antenna feeds, an RF to baseband conversion subsystem, a bank of digital beamformers, a channelization subsystem, a bank of weighted combiners, and a bank of demodulators for the demodulation and detection of user signals. The multiple beamformers introduce nulls in the direction of interference sources based on distinct adaptive algorithms for providing different antenna beam patterns after adaptation. Various other embodiments may utilize architecture for providing the directions of the interference sources or intentional jammers. | 11-06-2014 |
20140327577 | LOW COST HIGH PERFORMANCE AIRCRAFT ANTENNA FOR ADVANCED GROUND TO AIR INTERNET SYSTEM - A high gain multi-beam aircraft blade antenna of an air-to-ground antenna systems includes multiple columnar matrix antenna elements housed within a blade. The elements are arranged to create independently steerable directed beams. A first independently steerable beam is used to provide communication. A second independently steerable beam is used to simultaneously search other signals. | 11-06-2014 |
20140354478 | COMMUNICATION SYSTEM, CONTROL APPARATUS, CONTROL METHOD, AND STORAGE MEDIUM - In a communication system including a transmission apparatus which includes a transmission antenna capable of changing a direction of directivity and a reception apparatus which includes a reception antenna capable of changing a direction of directivity, one of the transmission apparatus and the reception apparatus obtains the time of arrival of a radio wave for each of a plurality of pairs of the directions of directivity of the transmission antenna and reception antenna, and extracts a plurality of pairs of the directions of directivity to be used for communication so that the difference between the time of arrival for one of the pairs and the time of arrival for another one of the pairs is not shorter than a predetermined time. | 12-04-2014 |
20140375501 | WIRELESSLY RECONFIGURABLE ANTENNA - A reconfigurable antenna element is controlled using a wirelessly powered and wirelessly activated switch, where the antenna element is part of an antenna or antenna array. A control signal for reconfiguring the antenna element is embedded into a wirelessly transmitted data signal for transmission by the antenna. | 12-25-2014 |
20150029056 | WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION SYSTEM, AND COMPUTER READABLE STORAGE DEVICE - A wireless communication device includes: a directional antenna configured to wirelessly receive data from the wireless communication device which is a connection partner; a processing unit configured to perform a first detection process of controlling a directivity direction of the directional antenna and detecting a first direction which is a direction of a radio wave generation source other than the wireless communication device and a second detection process of controlling the directivity direction of the directional antenna and detecting a second direction which is a direction of the wireless communication device; and a control unit configured to set a directivity angle of the directional antenna to a narrower angle when the second detection process is performed by setting the directivity direction of the directional antenna in a vicinity of the first direction. | 01-29-2015 |
20150048974 | SYSTEM AND METHOD FOR HIGHLY DIRECTIONAL ELECTRONIC IDENTIFICATION AND COMMUNICATION AND COMBAT IDENTIFICATION SYSTEM EMPLOYING THE SAME - An antenna for directional electronic communication and a directional communication system are provided. In one embodiment, the antenna includes: (1) a protective shell, (2) a Luneberg lens located within the protective shell and (3) multiple radio frequency signal conveyors located proximate a portion of the Luneberg lens and configured with the Luneberg lens to transmit radio frequency signals within a defined region or receive radio frequency signals that originate within the defined region. | 02-19-2015 |
20150048975 | WIRELESS ELECTRONIC DEVICE AND WIRELESS TRANSMISSION METHOD THEREOF - The present invention discloses a wireless electronic device including an adaptive antenna device, a wireless communication module and a processing unit. The adaptive antenna includes a horizontal antenna module arranged to transmit data in a plurality of certain horizontal directions and a vertical antenna module arranged to transmit data in a plurality of certain vertical directions. The processing unit enables the wireless communication module to enable the horizontal antenna module to scan signals along the certain horizontal directions to obtain a horizontal scan result when the wireless electronic device is powered up. The processing unit further determines whether at least one electronic device is available in at least one of the certain horizontal directions according to the horizontal scan result, and enables the horizontal antenna module and the vertical antenna module to directionally transmit data to the electronic device in the certain horizontal directions. | 02-19-2015 |
20150048976 | PORTABLE ELECTRONIC SYSTEM WITH IMPROVED WIRELESS COMMUNICATION - The application relates to a portable electronic system comprising a first electronic device and an auxiliary device. The first electronic device comprises a first antenna defining a first spatial direction, and a first wireless unit operationally coupled to the first antenna. The auxiliary device comprises a second antenna defining a second spatial direction, the second antenna comprising a multitude of antenna elements, each defining a specific spatial direction, a second wireless unit operationally coupled to the second antenna, a direction detector configured to provide a direction-signal indicating an estimate of a current value of said second spatial direction relative to a reference direction, and a control unit configured to selectively control the connection of said multitude of antenna elements of the second antenna to said second wireless unit based on said direction-signal from the direction detector. Thereby a wireless link between a hearing assistance device and an auxiliary device can be optimized. | 02-19-2015 |
20150123849 | Position Determining Method and System Using Surveillance Ground Stations - An aircraft avionics system and method for automatically determining an aircraft position. The system and method determine distances to UAT or SSR ground stations. The system and method then determine the position of an aircraft by determining true bearings to SSR or UAT ground stations and determining the possible positions for the aircraft at which the aircraft is at respective bearings to each SSR or UAT ground station. An alternative system and method may determine distances based on timing signals in transmissions from the ground stations and determine one or more possible positions for the aircraft at which the aircraft is at the determined distances from respective ground stations. The system and method also may use dead reckoning or VOR or ADF signals to reduce the possible positions for the aircraft to a single possible position. | 05-07-2015 |
20150138017 | METHOD AND APPARATUS FOR BEAMFORMING IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for beamforming in a wireless communication system are provided. The method of supporting beamforming in a wireless communication device includes detecting a direction change of the wireless communication device while communicating with a peer device. The method of supporting beamforming in a wireless communication device also includes adjusting a beam direction for communication with the peer device based on information indicating a direction change of the wireless communication device. | 05-21-2015 |
20150333818 | ADAPTIVE INTERFERENCE CANCELLATION APPARATUS FOR CANCELLING SIDE LOBE BETWEEN NEIGHBORING CELLS - An adaptive interference cancellation apparatus for cancelling a side lobe between neighboring cells installed in a repeater and capable of improving quality of a communication signal and preventing frequent handover by maintaining a serving base station signal among repeater signals and cancelling an interference signal from a neighboring cell is provided. The adaptive interference cancellation apparatus for a side lobe between neighboring cells, which is installed in a mobile communication repeater system comprising an omni-directional antenna, includes: three directional antennas installed around the omni-directional antenna; an output signal selector configured to select and output two of three directional antenna incident signals; and an adaptive noise canceller configured to adaptively filter the two directional antenna incident signals output from the output signal selector, estimate a noise reference signal, and extract a serving base station signal by subtracting the estimated noise reference signal from an omni-directional antenna incident signal. | 11-19-2015 |
20150358040 | COMMUNICATIONS WITH INTERFERENCE SUPPRESSION - Various aspects of the disclosure are directed to steering antennas for receiving signals. As may be implemented in accordance with one or more embodiments, an apparatus includes two or more antennas that receive radio signals, a first circuit that directs the antennas and a second circuit that combines signals received by the antennas. The first circuit operates in a first mode by electronically directing the antennas using an analog portion of received signals to modify a radiation pattern of the receive antennas, based on estimated phase-shifts and/or estimated amplitude of the signals. In a second mode, the first circuit uses a digitally-modulated portion of the signals to electronically direct the antennas by modifying the radiation pattern of the receive antennas based on at least one of estimated phase-shifts and estimated amplitude of the signals. Accordingly, null-steering can be effected to eliminate interference. | 12-10-2015 |
20150380807 | DIVERSIFIED ANTENNA SYSTEM FOR VEHICLE-TO-VEHICLE OR VEHICLE-TO-INFRASTRUCTURE COMMUNICATION - A diversified antenna system is suitable for vehicle-to-vehicle or vehicle-to-infrastructure communication. The antenna system has a first antenna arrangement and a directional antenna arrangement. The first antenna arrangement has a blind spot from which it cannot receive a signal. The directional antenna arrangement is configured to receive signals from the blind spot of the first antenna arrangement. A vehicle is provided with such an antenna system and communication is effected between vehicles or between vehicles and infrastructures. | 12-31-2015 |
20160065287 | APPARATUS, SYSTEM AND METHOD OF BEAMFORMING TRAINING - Some demonstrative embodiments include apparatuses, devices, systems and methods of beamforming training For example, an apparatus may include a transmitter, a receiver, and a controller to repeat a beamforming training sequence including a transmit (Tx) mode and a receive (Rx) mode, at the Tx mode the transmitter is to transmit a directional Tx training signal to a wireless communication device, and at the Rx mode the receiver is to be at an omnidirectional Rx state, wherein subsequent to successful receipt of a directional Rx training signal from the wireless communication device at the receiver, the transmitter is to transmit the directional Tx training signal including an Rx beam indication to indicate a beam direction of the Rx training signal. | 03-03-2016 |
20160087339 | WIRELESS COMMUNICATION TERMINAL - In one implementation, an antenna array has a plurality of antenna element, each of which is configured to apply a phase shift to a signal. A beam steering controller is configured to steer a main beam of the antenna by controlling the phase shifts applied by the antenna elements. In addition, the beam steering controller also is configured to detect a failure of an antenna element and, in response to detecting the failure, disable the failed antenna element and modify the phase shifts applied by remaining ones of the antenna elements. | 03-24-2016 |
20160093952 | COMMUNICATION APPARATUS, CONTROL METHOD, AND STORAGE MEDIUM - A communication apparatus having an antenna, for which directivity characteristics can be changed by setting parameters, specifies the parameters of the antenna to obtain directivity characteristics to be used for communication. After specifying the first parameter having a direction of directivity corresponding to the first communication path with another communication apparatus, the communication apparatus searches for the second parameter having a direction of directivity corresponding to the second communication path from parameters obtained by excluding the first parameter from possible parameters. The communication apparatus communicates with the other communication apparatus by setting the antenna using the first and second parameters. | 03-31-2016 |
20160198362 | SYSTEM AND METHODS FOR A MESH NETWORK UTILIZING SMART ANTENNAS | 07-07-2016 |