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8175536 |
Wireless communication system, wireless communication apparatus and communication control method
A channel estimation and prediction unit 18 estimates a channel and predicts a plurality of channels for a next transmission slot. An SVD unit 19 performs singular value decomposition on a...
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8160503 |
Method and system for characterizing a radio channel of a wireless network using variability of synchronization
A speed parameter or channel quality parameter are determined in a mobile device based on variation in frequency offset measurement. A higher variation in the frequency offset measurement reflects...
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8160608 |
Position detection
Techniques and apparatus are described for detecting a position of a target. A position detection device associated with a wireless communication system includes an accumulator to sample and...
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8155025 |
Method for uplink spectrum monitoring for sparse overlay TDMA systems
Spectrum monitoring measurements are made by microcell base stations in a layered cellular network, while not serving calls or engaged in processing calls. The microcell base station transmits a...
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8150435 |
Reporting channel quality information
The present disclosure relates to a method of transmitting channel quality data for channels in a wireless communication system, and to a corresponding receiver and transmitter. In one embodiment,...
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8150325 |
Blanking system
An exemplary signal interference control system is disclosed that utilizes a computer system, such as programmable logic circuits or computer controlled logic gates, to generate blanking or control...
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8150447 |
Multi mode outer loop power control in a wireless network
A method and arrangement is provided for adjusting the transmission power of radio signals sent over a radio link from a second node to be received by a first node reducing the transmission power...
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8150436 |
Radio-wave propagation characteristic prediction assisting system and radio-wave propagation characteristic prediction assisting method
A radio-wave propagation characteristic prediction assisting system includes a storage section, an attribute information input section, and an output section. The storage section stores attribute...
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8140103 |
Method and apparatus for power scaling in peer-to-peer communications
An ad hoc peer-to-peer network is provided in which a transmitter wireless terminal is configured to establish a peer-to-peer communication link with a receiver wireless terminal over a shared...
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8131224 |
Delay, gain and phase estimation for measurement receivers
Phase and gain of a transmit signal are measured at a transmitter by determining a first time delay having a first resolution at a measurement receiver between a reference signal from which the...
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8126405 |
Method for estimating condition of wireless channels
A method measures a time from transmitting a ranging signal to receiving the ranging signal via a channel of a wireless network, and a received signal strength (RSS) of the ranging signal. A...
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8126404 |
Method and device for evaluating the energy level of a radio signal
To evaluate an energy level of a signal received through a radio interface between radiocommunication stations, successive measurement samples depending on the energy of the signal are obtained,...
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8125990 |
Silent probe for network delay reporting
Systems are presented in which a network database is populated and updated with delay values representing measured network delays in routing calls between call control entities of a communications...
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8121590 |
Method and arrangements in a mobile communication network
A method in a node of cellular telecommunication network comprising receiving downlink quality measurements of a primary carrier frequency and at least one secondary carrier frequency and combining...
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8121589 |
Reporting measurements from a mobile station to a network and associated handover control method
A mobile station receives dedicated signaling from the network to obtain measurement configuration data specified for it. The measurement configuration data stored in the mobile station include:...
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8116696 |
Transmitter for communications system
An rf signal transmitter for transmitting rf signals through a plurality of antennas is described, which comprises: a transmit section adapted to selectively set, with respect to an input signal,...
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8103219 |
Method and apparatus for frequency control in wireless communications
The automatic frequency correction value applied by a receiver is altered to minimize long-term drift of a path delay profile. In one embodiment, the phase or timing error resulting from constant...
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8095161 |
System and method for determining a transmit timing for communication in a radio communication system
A method for determining a transmission timing is provided. The method includes steps of, at a first point in time, determining a first transmission timing for transmissions from a user entity to a...
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8078114 |
Method and apparatus for determining propagation delays for use in wide area networks
A system and method for determining a signal propagation delay between a transmitter and a receiver, and for adjusting a transmission time based on the propagation delay. A central station inserts...
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8073452 |
System and method utilizing a cognitive transceiver for ad hoc networking
The present invention provides methods and apparatuses for utilizing unused portions of an allocated frequency spectrum in a wireless communications system that broadcasts content to wireless...
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8064840 |
Method and system for determining spectrum availability within a network
A method and transceiver for determining spectrum availability within a give area is disclosed. The given area includes cells in a grid. A belief evaluator receives a measurement from a signal and...
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8055226 |
Frequency response correction for a receiver having a frequency translation device
A method of correcting the frequency response of an RF receiver having a frequency translation device and a fixed IF frequency section uses calibration data representing frequency responses over a...
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8055186 |
Satellite transmission channel detection method and reception device using the method
The invention reduces the time needed for an automatic channel search on a device receiving channels of different widths. The invention proposes a channel detection method which carries out a first...
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8054924 |
Data transmission method with phase shift error correction
A data transmission method with phase shift error correction comprising: transmitting through a network a transmission signal, wherein the transmission signal comprises a reference signal component...
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8045928 |
Test system for adjusting a wireless communication device by impedance loading features
A test system for adjusting a wireless communication device by impedance loading features includes a power supply for generating a plurality of voltages, a test fixture coupled to the power supply...
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8045926 |
Multi-transceiver architecture for advanced Tx antenna monitoring and calibration in MIMO and smart antenna communication systems
Exemplary embodiments of system and method are provided for measuring signal amplitude, phase and/or delay offsets between multiple transmit signals fed through the transmit signal processing...
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8010044 |
Radio terminal, relay station, radio base station and communication method
The present invention utilizes a communication method including acquiring, with a radio base station, reception quality of the received signal received via no relay station from a radio base...
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8000662 |
Transmission characteristic adjustment device, circuit substrate, and transmission characteristic adjustment method
A transmission characteristic adjustment device and the like that can carry out circuit adjustment before an error occurs, and has a transmission characteristic with high reliability without...
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8000744 |
Apparatus and method for beamforming in a communication system
An apparatus and method for beamforming in a communication system are provided, in which a base station receives a channel vector from each of a plurality of mobile stations, generates an uplink...
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8000228 |
Pilot signal in an FDMA communication system
Methods (500, 800) and corresponding systems (100, 200, 300, 400, 900) for generating a pilot symbol (330) include providing an M-point parallel transform sequence that is a discrete Fourier...
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7995974 |
Method and apparatus for revoking a talk burst
An embodiment of the present invention discloses a method for revoking a talk burst, which includes: entering a pending release state by a talk burst after a client having the talk burst releases...
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7991362 |
Methods and apparatus for supporting timing and/or frequency corrections in a wireless communications system
A wireless terminal determines the position of a moving base station and determines timing and/or frequency corrections. A wireless terminal determines its relative position with respect to the...
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7986755 |
Method and apparatus for calibration for beamforming of multi-input-multi-output (MIMO) orthogonol frequency division multiplexing (OFDM) transceivers
An embodiment of the present invention includes a calibration system employed in a multi-input-multi-output (MIMO) system for beamforming and receiving a plurality of streams. The system includes a...
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7983622 |
Using phase difference to determine valid neighbors
A method and system is disclosed for using phase shift to determine valid neighbors in a wireless communication system. A phase difference, measured at an access terminal, between an expected phase...
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RE42543 |
GPS satellite signal acquisition assistance system and method in a wireless communications network
A system and method for assisting an integrated GPS/wireless terminal unit in acquiring one or more GPS satellite signals from the GPS satellite constellation. The invention includes a method for...
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7965991 |
Phase calibration for multiple transmitter systems
A method, wireless communication device, and a base station calibrate relative phase of a plurality of output signals from respectively combined plurality of transmitters (302, 204) in the wireless...
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7962102 |
Method and system for adaptive ray launching
A system (170) and method (300) for ray launching is provided. The system can include a transmitter (110) for successively launching a plurality of rays, and a receiver (120) for receiving...
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7962092 |
Small-sized radio frequency type repeater
A small-sized Integrated Radio Frequency Type Repeater includes first and second Service (transmitting) Antennas, a Junction circuit part with RF type (200) which plays the role of relay, a Shield...
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7957700 |
Transmitter delay and phase adjustment
A transmitter, including at least two transmitter units, each transmitter unit being configured to input an instance of a digital transmit signal, to convert the digital transmit signal to an...
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7949351 |
Data boundary aware base station assisted position location
The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method for...
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7933599 |
Techniques for facilitating communication handoffs
Various schemes are provided that facilitate a communication handoff from a current base station to a target base station. One feature provides for reducing the search space that a base station...
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7933560 |
Apparatus and method for transmitting/receiving data in a mobile communication system using multiple antennas
An apparatus and method for transmitting/receiving data in a mobile communication system using multiple antennas are provided. A receiver estimates a fading channel of received data, selects a...
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7925260 |
Method for uplink spectrum monitoring for sparse overlay TDMA systems
Spectrum monitoring measurements are made by microcell base stations in a layered cellular network, while not serving calls or engaged in processing calls. The microcell base station transmits a...
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7912422 |
Method and system for demodulation of open-loop GPS radio occultation signals
Methods and systems for demodulation of open-loop GPS radio occultation signals are provided. An occulted GPS radio signal where the atmosphere-induced modulation on the phase is up to 180 degrees...
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7907909 |
Method and system for radio frequency (RF) group delay compensation in a broadcast system
A radio device operable to compensate for a large RF filter group delay variation is provided. The radio device includes a receiving unit operable to receive an OFDM signal that comprises pilot...
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7899405 |
Apparatus and method for transmitting/receiving data in a mobile communication system using multiple antennas
An apparatus and method for transmitting/receiving data in a mobile communication system using multiple antennas are provided. A receiver estimates a fading channel of received data, selects a...
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7899467 |
Estimating the location of a wireless terminal based on the traits of the multipath components of a signal
A technique for estimating the location of a wireless terminal at an unknown location in a geographic region is disclosed. The technique is based on the recognition that there are traits of...
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7885606 |
Assisted measurement survey of a wireless communication network
An apparatus and method for providing measurement assistance in a survey of a wireless communication network includes a first step (1) of defining a scope of measurement targets to complete the...
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7881669 |
Time reference point information transmitting system and receiver
A transmitter sets a time length, determines a time point at which phases of frequency signals coincide within a range of the time length, defines a determined time point as a time reference point,...
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7873326 |
RFID beam forming system
A multi-protocol, multi-band array antenna system may be used in Radio Frequency Identification (RFID) system reader and sensory networks. The antenna array may include array elements with an...
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