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Class 455/10 - Fading compensation


Subclass of Class 455 - Telecommunications
Definition: Subject matter where the measured quantity is the strength
No. of patents: 136
Last issue date: 03/23/2010


1        
NumberTitleIssue Date
7684753Method and device for transmission parameter selection in mobile communications
In a MIMO delay spread (OFDM) system or a MIMO single carrier (non-OFDM) system wherein a transmitter transmits signals to a receiver through multipath fading channels, an equivalent frequency-domain MIMO multipath channel matrix is used to estimate the maximum mutu...
03/23/2010
7653347Doppler compensation control for radio transmission
A Doppler compensation method is used for radio transmission between a mobile body possibly but not exclusively a train and some base station, both mobile body and base station comprise respectively a transceiver connected to an antenna for the radio transmission. T...
01/26/2010
7409186Detection and elimination of oscillation within cellular network amplifiers
A system and method for substantially reducing oscillation produced by a network amplifier. An exemplary method includes receiving a cellular signal at a first antenna of a network amplifier and applying a first amplification factor to the cellular signal. The resul...
08/05/2008
7406295Method for dynamically directing a wireless repeater
A method for dynamically directing a wireless repeater is provided. A repeater will include an antenna, a mobile station modem, a processor and data storage. The processor will cause the antenna to sweep over a coverage area, possibly through increments. At each inc...
07/29/2008
7400856Method and apparatus for relay facilitated communications
Communications sourced by a remote unit (14) that is already within reception range of a base site (10) can nevertheless be further facilitated through allocation of one or more relay resources (15, 16). Such relay resources, properly employed, ...
07/15/2008
7397803Method of dynamic transmit scheduling using channel quality feedback
A method and system for dynamic rate switching via medium access channel layer signaling is disclosed, wherein data rates for high data rate channels are automatically shifted up or down based on a predetermined metric. In a preferred embodiment, data rates are auto...
07/08/2008
7386310Fallback mode ingress/egress mechanism for satellite communication system
A satellite communications system having a fallback mode of operation, during which uplink signals are transmitted at a reduced data rate, is provided with a novel fallback mode ingress/egress mechanism utilizing a combination of a feedback-based fade detection sche...
06/10/2008
7313175Method for avoiding interference radiation of AM transmitters used in digital transmission
A method for avoiding spurious emissions in an AM transmitter for digital transmission includes converting a digital modulation for controlling the AM transmitter into an amplitude signal and a phase-modulated RF signal. Non-linear distortions in an amplitude respon...
12/25/2007
7302011Quadrature frequency doubling system
The frequency doubler of the present invention operates to provide an in-phase signal and a quadrature signal, each having a frequency equal to twice the frequency of a reference signal. The in-phase and quadrature signals are based on signals that are 0 degrees, 45...
11/27/2007
7292857Mobile station, radio communication system, base station switching control method, program, and recording medium
A mobile station for communicating with a plurality of base stations, including: a field strength detecting circuit that detects a wave strength received from the base stations and outputs a received wave strength; and a base station switching control circuit that m...
11/06/2007
7283787Direct amplifying station and positioning method for mobile station thereof
The present invention relates to a repeater for positioning mobile station and a method thereof. The repeater according to the present invention is implemented through adding a cell identifier generator module to the downlink circuit structure of a conventional repe...
10/16/2007
7280799Mobile phone repeater
A wireless communication device repeater includes two antennas coupled to a bi-directional gain stage. A gain control system is coupled to the gain stage and adjusts the gain of the gain stage based on oscillation events. ...
10/09/2007
7257417Method for determining a change in a communication signal and using this information to improve SPS signal reception and processing
Methods and apparatuses for determining a position of a mobile satellite positioning system (SPS) receiver which is coupled to a communication receiver or transceiver. In one exemplary method, a change in a communication signal received by the communication receiver...
08/14/2007
7251281Method and apparatus for continuous cross-channel interleaving
A method of interleaving data for transmission is provided wherein first and second interleaving patterns for arranging data symbols in a source data stream into first and second transmitted data streams are selected. Each of said data symbols has at least one bit. ...
07/31/2007
7221907On orbit variable power high power amplifiers for a satellite communications system
A power system for a satellite includes a high power amplifier that has a control input. The high power amplifier has a minimum effective isotropic radiated power. A controller is coupled to the control input. The controller generates a control signal to adjust a sa...
05/22/2007
7215650Adaptive data rate control for narrowcast networks
A system to provide narrowcast communications uses adaptive data rate control to individual subscribers such that the effects of precipitation or other link conditions, which are not common to all subscribers, is mitigated. The invention takes advantage of the fact ...
05/08/2007
7184703Multi-hop wireless communications system having relay equipments which select signals to forward
A multi-hop wireless, for example cellular, communications system is provided comprising a source equipment which may be one of a base station or an end user terminal for transmitting signals towards a destination equipment which may be the other of a base station o...
02/27/2007
7184720Method and device for simulating radio channel
The invention relates to a method and device for performing channel simulation, the device comprising a set of channel simulation units (200 to 214) for simulating a radio channel, each unit comprising radio frequency parts (200A to 214A)...
02/27/2007
7177592Wireless communication system with split spot beam payload
A wireless communication system includes multiple wireless communication platforms carrying reflectors for providing spot beams. By using multiple platforms, the payload can be split. Each platform carries only a part of the reflectors needed to provide coverage for...
02/13/2007
7142619Long subscriber loops using automatic gain control mid-span extender unit
Systems and methods are described for long subscriber loops using automatic gain control. A method includes extending a digital subscriber loop including: producing an output signal in a first direction from a variable gain amplifier at a mid-span extender unit resp...
11/28/2006
7136640Method and apparatus for selectively operating satellites in tundra orbits
A satellite system provides geosynchronous satellites in tundra orbits in respective elliptical orbital planes separated by 120 degrees. The satellites traverse a common figure-eight ground track comprising northern and southern loops. The satellites are controllabl...
11/14/2006
7133679Radio network planning
A method of estimating the operating characteristics of a communication unit in a radio network in which a plurality of such communication units can communicate with a plurality of terminals by means of wireless signals and in which the terminals and the communicati...
11/07/2006
7116936Method and apparatus for estimating beacon power variations
A method for compensating for power variations in satellite communications includes measuring or estimating power variations for signals received at an earth-based terminal. The method also includes measuring or estimating changes in carrier-to-noise levels by a num...
10/03/2006
7110717Leader-follower power control
In a satellite or other relayed communication system having a plurality of subscriber terminals that communicate through an elevated wireless relay (typically a satellite operating in bent pipe mode), a technique for subscriber terminal power control is provided whe...
09/19/2006
7110739Multi-transmitter communication system employing anti-phase pilot signals
Base station transmitter signals are combined more effectively through the use of anti-phase pilots between pairs of transmission paths. At the combiner, the pilots will cancel when the amplitude, phase, and delay of the two transmission paths entering the combiner ...
09/19/2006
7103385Mobile satellite communication system
In a moving body satellite communication apparatus for performing communication with a satellite by an antenna with a radome mounted on a moving body such as an aircraft, loss due to transmission through the radome, and distortion of polarization characteristics are...
09/05/2006
7088966Wireless connection controller
A method and system for establishing connection between two wireless devices. The method and system includes establishing connection authentication between the wireless devices, and measuring and the signal strength between the two devices. Predetermined values rela...
08/08/2006
7082305Method and apparatus for generating a neighbor cell list
A user equipment (UE) communicates with at least one cell defining an active set. A velocity vector including position, speed, and direction is associated with the UE. A radio network controller receives information related to the velocity vector and creates a filte...
07/25/2006
7079808Light socket wireless repeater and controller
A wireless repeater and controller is placed between a light socket and a light bulb, such as in a ceiling light fixture. The wireless repeater and controller has an extending threaded portion that screws into the light socket, and a recessed threaded portion that r...
07/18/2006
7068976Method of verifying operation of listening control channel
A base station tunes a transceiver to listen to accesses made by mobile terminals on the base station's own control channel. Once the functionality of the transceiver is verified by correlating the known accesses to the received accesses, the base station then tunes...
06/27/2006
7068728Carrierless backwards compatible data neworking transmitter, receiver, and signal format
New version packet data devices support a backwards-compatible signal format. New version devices operate within a first frequency band while old version devices operate within a second frequency band. The first frequency band differs from but overlaps with the seco...
06/27/2006
7058399Search window delay tracking in code division multiple access communication systems
The present invention provides a search window delay tracking procedure for use in a multipath search processor of a CDMA radio receiver. A channel impulse response is estimated for a received signal containing plural paths, each path having a corresponding path del...
06/06/2006
7058086Method and apparatus for concatenated convolutional encoding and interleaving
A method and apparatus encode a source data stream via convolutional encoding. One or more encoded data streams are interleaved and transmitted on one or more transmission channels. Data groups generated via convolutional encoding are interleaved via time-interleavi...
06/06/2006
7047029Adaptive transmission system
A method, apparatus, article of manufacture, and a computer memory structure adaptively controlling a transmission signal from a satellite to at least one terrestrial receiver in a terrestrial region is disclosed. The method comprises the steps of receiving informat...
05/16/2006
7039436Mobile communication terminal
A mobile communication terminal includes a receiver (2) receiving a radio waves from a base station, a sampling unit (3) sampling a signal received by the receiver (2), a demodulator (5) demodulating the signal sampled by the sampling uni...
05/02/2006
7039119Method and apparatus for combining transponders on multiple satellites into virtual channels
A satellite communications system provides an information channel between remotely located transmitters and receivers. A virtual satellite system provides the same service, but divides the signal either in power or in data content into subchannels such that any part...
05/02/2006
7039103Asymmetric digital subscriber line methods suitable for long subscriber loops
Systems and methods are described for asymmetric digital subscriber loops. A method includes utilizing a circuit having a first end and a second end, the circuit having a first amplification interface connecting the first end to the second end in a first direction, ...
05/02/2006
7027815Compensating for frequency shift and timing shift in frequency and time tracking loops based on mobile unit velocity
A method and apparatus are provided for adjusting a communication receiver based on the velocity of a wireless communication device in relation to a base station. The receiver is adjusted by estimating a frequency shift of a communication signal transmitted between ...
04/11/2006
7006787Mobile to mobile digital wireless connection having enhanced voice quality
This invention is directed toward improving the subjective voice quality of a mobile to mobile phone call having tandem vocoder processing by modifying the spectrum of the voice signal before it is processed by the second vocoder to compensate for digital distortion...
02/28/2006
7006795Wireless communication system with interference compensation
A method and apparatus for assigning the data rate and/or power level to the mobile terminals without determining the highest theoretical system throughput, and without determining the highest weighted system throughput. An order is imposed on the terminals and the ...
02/28/2006
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