|
Match
|
Document |
Document Title |
|
|
7565172 |
Adaptive antenna reception method and device
An adaptive antenna receiver whose follow-up performance is improved with respect to the angle change of the arrival direction of a desired signal. An antenna weight adaptive update section ( 11 -...
|
|
|
7557752 |
Apparatus and method for communication
There is provided a communication method including: generating a channel estimated value for each antenna by performing channel estimation using a received signal by each antenna; calculating...
|
|
|
7492749 |
Method and system for providing multi-input-multi-output (MIMO) downlink transmission
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...
|
|
|
7477192 |
Direction finding system and method
In a direction finding system, pluralities of signals provided by different sets of less than all of a plurality of arrayed antennas are code division multiplexed, downconverted by a single...
|
|
|
7463193 |
Beam forming system
A compact system can use modular components to enhance the isolation or quality of signals that an antenna array produces. The system can comprise an array of input coupler modules and an array of...
|
|
|
7450068 |
Phased array antenna beam tracking with difference patterns
A system and method for using a phased array antenna to concurrently receive an RF signal transmitted by a remote transmitter, to determine the angular location of the remote transmitter using the...
|
|
|
7432857 |
Adaptive antenna apparatus provided with a plurality of pairs of bidirectional antennas
An adaptive antenna apparatus is provided with a total of four or more, even number N of antennas including a plurality of pairs of antennas each having a bidirectional characteristic. The N...
|
|
|
7423588 |
Phased array antenna system
The present antenna system includes a phased array antenna system comprising a limiting circuit, an isolation circuit, and a phasing circuit. The limiting circuit includes a system of fast signal...
|
|
|
7373176 |
Coordination of beam forming in wireless communication systems
A method and system for coordinating the use of beam forming between two communicating entities in a wireless communication system is disclosed. The two entities may communicate control information...
|
|
|
7362268 |
Method for detecting navigation beacon signals using two antennas or equivalent thereof
A method for detecting a plurality of navigation beacon signals by using either two antennas or a synthetic aperture antenna for receiving a plurality of distinct measurements, and combining the...
|
|
|
7330801 |
Signal separation using rank deficient matrices
A communications device includes an antenna array for receiving different summations of source signals from a plurality of signal sources, a receiver coupled to the antenna array for receiving the...
|
|
|
7324047 |
Adaptive antenna apparatus for selecting adaptive control processing according to detected signal quality and radio communication apparatus using the same
An adaptive antenna apparatus includes two antenna elements and a parasitic element to which a variable reactance element is connected, and selects an adaptive control process according to detected...
|
|
|
7257153 |
Method of synchronizing a receiver, and a receiver
The invention relates to a method for synchronizing a receiver ( 1 ) with a transmitted code-modulated spread spectrum signal. The method uses at least one reference code (r(x)), which corresponds...
|
|
|
7248217 |
Average EIRP control of multiple antenna transmission signals
A method of controlling multiple antenna signal transmission is disclosed. The method includes adjusting signal parameters so that transmission signals from a plurality of antennas combine to form...
|
|
|
7236750 |
Techniques for correcting for phase and amplitude offsets in a MIMO radio device
Techniques to correct for phase and amplitude mismatches in a radio device in order to maintain channel symmetry when communicating with another device using MIMO radio communication techniques....
|
|
|
7231151 |
Cosite interference rejection system using an optical approach
A cosite interference rejection system allows cancellation of large interfering signals with an optical cancellation subsystem. The rejection system includes an interference subsystem coupled to a...
|
|
|
7190746 |
Multiple lobe dot product detector for M-code GPS receivers
A positioning system receiver is disclosed. The positioning system receiver includes an antenna for receiving radio frequency (RF) signals. The positioning system receiver also includes a radio...
|
|
|
7173975 |
Estimation of a frequency selective channel in a MIMO environment with parameters that vary within a transmission block
In an environment where a block transmission takes place via a frequency selective channel that is characterized by channel parameters that change with time in the course of the transmission of a...
|
|
|
7162273 |
Dynamically optimized smart antenna system
A wireless communications network includes a plurality of wireless devices equipped with direction-agile antenna systems to allow the wireless devices to establish and maintain wireless data links...
|
|
|
7161534 |
Hybrid beamforming apparatus and method for the same
A hybrid beamforming apparatus and method are proposed for a communication system. The hybrid beamforming apparatus includes a plurality of antennas, a plurality of FFT, a plurality of hybrid...
|
|
|
7126533 |
Direction-finding for multiple cochannel sources
Techniques for determining the angles of arrival of multiple simultaneous cochannel sources using only a single RF receiver sampling and downconversion channel is disclosed. This is accomplished by...
|
|
|
7126532 |
Apparatus for tracing an optimal direction to receive satellite signal in active phase array antenna system
The present invention relates to a signal combining apparatus of the active phase array antenna. The signal combining apparatus includes a plurality of signal distributors for receiving a signal...
|
|
|
7106785 |
Adaptive antenna reception apparatus with weight updated adaptively
An adaptive antenna reception apparatus includes a multi-beam former ( 1 ) provided in common to users, to convert antenna-corresponding spread signals received by antennas of an array antenna into...
|
|
|
RE39275 |
Hardware-efficient demodulator for CDMA adaptive antenna array systems
In the hardware-efficient demodulator for a CDMA adaptive antenna array mechanism of a mobile radio communication system, a correlators bank receives digital baseband signals received through an...
|
|
|
7098849 |
Blind signal separation using array deflection
A communications device for separating source signals provided by M signal sources includes an antenna array comprising N antenna elements for generating N initial antenna patterns for receiving N...
|
|
|
7095984 |
Base station apparatus and direction-of-arrival estimating method
Signals including a plurality of components representing a phase rotation between antenna elements by combining signals, which have arrived through each path of a first to an m-th paths, for every...
|
|
|
7088956 |
Path search circuit, radio receiver and radio transmitter, utilizing a directional beam
A path search circuit according to the present invention has an orthogonal multi-beam forming section 4 for directional reception with a plurality of orthogonal multi-beams orthogonal one to...
|
|
|
7030813 |
Array antennas with independent sum and difference excitations levels
Improved punch-through performance is provided for applications such as sum and difference mode processing for IFF and other applications. With an array including a row of elements, difference...
|
|
|
7006042 |
Antenna array system, method of controlling the directivity pattern thereof, and mobile terminal
To realize an adaptive antenna array system which improves reception quality of desired signals by properly suppressing interference signals. The system includes: a signal detection section which...
|
|
|
6931252 |
Interference analysis for a mobile radiotelephone system with adaptive antennae
A method for interference analysis in a mobile radio network having an adaptive antenna in at least some of its cells and including traffic channels and control channels, includes calculating an...
|
|
|
6897806 |
Method and device for scanning a phased array antenna
A method for scanning of antenna array, wherein on output signals from radiating elements are applied phases offset in order to obtain signals with approximately equal phases. The obtained signals...
|
|
|
6894643 |
Apparatus for and methods of receiving a transmission signal
Apparatus for and methods of receiving a transmission signal, suitable for use in a cellular mobile communications system, are disclosed. The apparatus comprises a beam former ( 50 ) for receiving...
|
|
|
6879624 |
Adaptive antenna receiver
A path detector detects multipath waves on a transmission line based on a plurality of despread signals corresponding to fixed directional beams. An adaptive beam forming section forms an adaptive...
|
|
|
6850190 |
Combined beamforming-diversity wireless fading channel demodulator using adaptive sub-array group antennas, signal receiving system and method for mobile communications
A wireless fading-channel demodulator using adaptive sub-array group antennas to combine beamforming and diversity gain, a signal receiving system and method for mobile communications using the...
|
|
|
6839572 |
Control device for a subsystem in a base station for mobile telephony
The invention relates to a control device for a transmitter/receiver module in an antenna for receiving and transmitting electromagnetic signals, which transmitter/receiver module can be set to...
|
|
|
6828935 |
Digitally synthesized phased antenna for multibeam global positioning
In a system according to the proposed technique (see figure), the signal received by each element of the array antenna would be subjected to downconversion, and spread-spectrum demodulation and...
|
|
|
6822607 |
Communication apparatus using OFDM technique
A weight computation unit finds a weight used in a maximum ratio combining carried out on data sub-carrier signals for each user terminal. A direction vector computation unit finds direction...
|
|
|
6801161 |
System and method for auto calibrated reduced rank adaptive processor
The present invention describes a space-time adaptive processing (STAP) system and method combining adaptive processing with automatic phase calibration providing an improved signal-to-noise ratio...
|
|
|
6784839 |
Steerable antenna interferer rejection techniques
A steerable antenna array ( 10 ) includes a plurality of antenna elements ( 12 a- 12 f ) which receive broad band signals and narrow band interfering signals which together form antenna signals....
|
|
|
6759983 |
Method and device for precise geolocation of low-power, broadband, amplitude-modulated signals
The invention relates to methods and devices for precise geolocation of low-power, broadband, amplitude-modulated rf and microwave signals having poor coherency. The invention provides a basis for...
|
|
|
6724344 |
Computational enhancements for space-frequency adaptive processing (SFAP).
A signal processing system is disclosed. The signal processing system comprises an antenna receiving a radio frequency (RF) signal. The signal processing system also comprises radio frequency...
|
|
|
6720908 |
Sensor front-end for range and bearing measurement
A method for measuring range and bearing of an object. At least a portion of a first signal is transmitted from a sensor. The transmitted signal is reflected from an object and received by the...
|
|
|
6718184 |
Method and system for adaptive signal processing for an antenna array
A method for processing signals from multiple receiving/transmitting elements that define an array antenna is disclosed. The method includes measuring uplink signals from the elements of the array...
|
|
|
6703970 |
Beam forming network, a spacecraft, an associated system and a beam forming method
The invention relates to a beam forming network of an active antenna with deployable sub-arrays. According to the invention, the network receives information on deformation of the relative position...
|
|
|
6693590 |
Method and apparatus for a digital phased array antenna
A digital phased array antenna comprises a plurality of antenna elements, each element receiving an incoming signal. An analog-to-digital converter is coupled to at least one of the antenna...
|
|
|
6690326 |
Wide bandwidth phased array antenna system
A phased array antenna system in accordance with the present invention is configured to transfer signal energy between an antenna array and a source/target via multiple subbeams respectively...
|
|
|
6683566 |
Electronic active phase control array antenna, method for compensating for direction differences at the antenna, and satellite tracking system and method using the antenna
Disclosed is an electronic active phase control array antenna having two beams which comprises: a first array unit for performing phase shifting on radio waves received via satellite communication,...
|
|
|
6661375 |
Beam steering in sub-arrayed antennae
A method is presented for operating a phased array antenna comprising a number of sub-arrays. The method comprises the steps of introducing phase offsets into signals received from/transmitted to...
|
|
|
6658261 |
Method for sinusoidal modeling and prediction of fast fading processes
The present invention discloses a method for predicting fast fading using sinusoidal modeling techniques. The method first applies a finite impulse response low pass filter to the incoming signal...
|
|
|
6657590 |
Adaptive antenna reception apparatus using reception signals by arrays antennas
An adaptive antenna reception apparatus includes a plurality of receiving sections and a combining unit. Each of the plurality of receiving sections is provided for a corresponding one of paths....
|