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7616606 |
Mechanism for avoiding triggering silent radio squelch circuits
A ‘smart’ sub-channel hopping control mechanism executes one or more sub-channel selection discriminators to enable the communications controller of a spectral reuse transceiver to delineate on...
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7584495 |
Redundant stream alignment in IP datacasting over DVB-H
A real-time program transmission system and method may receive a signal from a content source, and generate two different data streams. One stream may be of a higher quality than the other. The two...
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7580673 |
Leader-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...
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7558528 |
Wireless local area network translating bi-directional packet repeater
A translating bi-directional packet repeater includes a first antenna and a second antenna for receiving a wireless signal, amplifying it, and retransmitting it on a different channel. The channel...
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7409186 |
Detection 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...
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7406295 |
Method 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...
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7400856 |
Method 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...
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7397803 |
Method 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...
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7386310 |
Fallback 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...
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7302011 |
Quadrature 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...
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7184703 |
Multi-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...
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7133679 |
Radio 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...
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7110717 |
Leader-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...
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7079808 |
Light 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...
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7058399 |
Search 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...
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7027815 |
Compensating 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...
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7006787 |
Mobile 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...
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7006795 |
Wireless 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...
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7006446 |
Detection of duplicate participants in a two-way modem environment
Duplicate participants (e.g., cloned subscriber units) ( 274 ) are detected in a communication network, such as a hybrid fiber/coax (HFC) cable television network or the like, by monitoring the...
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6999719 |
Symbol combining device for multi-path diversity
A symbol combining device for multi-path diversity includes a plurality of demodulation circuits for demodulating received signals, a common memory for storing outputs of the demodulation circuits,...
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6978131 |
Testing mobile phones
An apparatus for testing a cellular phone comprising an RF signal generator ( 122 ) for transmitting an RF signal (RF 10 ) to said cellular phone, said RF signal generator receiving an input...
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6917814 |
Method and mobile station for reporting multi-path signals based on a report window
A method ( 500 ) and a mobile station ( 160 ) for reporting multi-path signals based on a report window are described herein. The mobile station ( 160 ) may determine a distribution of a plurality...
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6842487 |
Cyclic delay diversity for mitigating intersymbol interference in OFDM systems
A method and/or an apparatus for mitigating intersymbol interference. In systems which employ transmission diversity when transmitting symbols which have a guard interval, the multiple versions of...
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6813476 |
Method and system for compensating for atmospheric fading in a communications system
A method and system for compensating for atmospheric fading is used in a communication system wherein communication signals are exchanged between first and second earth stations via a satellite...
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6768897 |
Method of adjusting frequency of cellular radio repeater
The invention relates to a method of adjusting the radio frequency of a repeater ( 302 ) in a cellular radio network. The repeater ( 302 ) amplifies radio signals ( 170 ) of a bi-directional radio...
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6763006 |
Method and apparatus for controlling uplink transmission power within a satellite communication system
A method and apparatus for controlling uplink transmission power in a satellite communication system is disclosed. The satellite communication system includes a satellite and one or more earth...
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6745005 |
Method and apparatus for reducing signal interference in satellite broadcast systems employing terrestrial repeater stations
A method and apparatus for reducing deep fading of signals in satellite-based communications systems employing terrestrial repeater stations by shifting the phase of the signals transmitted from...
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6687487 |
Repeater for transmission system for controlling and determining the status of electrical devices from remote locations
A repeater for use in a two way communication system for retransmitting information between a first device and a second device to help ensure reliable two way communication between the devices,...
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6665546 |
High speed, point-to-point, millimeter wave dated communication system
A point-to-point, wireless, millimeter wave trunk line communications link at high data rates in excess of 1 Gbps and at ranges of several miles during normal weather conditions. This link is...
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6590875 |
Radio data communication technique for maintaining a connection between a mobile radio transmission device and a server during a communication interruption
In data communication utilizing a radio transmission channel, even in a case where the radio channel is disconnected and a data communication blackout occurs, the center side continues data...
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6556836 |
Point-to-point, millimeter wave, dual band free space gigabit per second communication link
A point-to-point, wireless, millimeter wave communications link providing data transmission rates of over 1 billion bits per second (more than 1 Gbps) at ranges of several miles during normal...
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6549545 |
Pilot signal detection method and receiver
A pilot signal detection method and a receiver, in which a search window having a predetermined time width is generated at every substantially constant time interval, and pilot signals existing in...
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6539205 |
Traffic channel quality estimation from a digital control channel
A method and apparatus for effectively monitoring quality of a traffic channel in a communication, and in response, modifying transmission coding or data transmission rates, or both, improves...
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6535717 |
Method, system and apparatus for transmitting, receiving, and reproducing a digital broadcast signal
The present system comprises a transmitting apparatus for digital broadcast which includes an original signal generating section, delaying section, information amount reducing section, and...
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6430390 |
Methods for enhancing service and reducing service cost in mobile satellite systems
Methods are provided for determining and enhancing the service efficiency of mobile communications. To assess communication efficiency in each communication region of interest, a signal-fading...
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6321065 |
Performance enhancement of open-loop power control for satellite communication systems
The present invention provides an open-loop method for determining uplink transmission power in a satellite communication system 200 that compensates for antenna pointing error attenuation and for...
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6314289 |
Apparatus and method for transmitting information and apparatus and method for receiving information
An apparatus for transmitting information comprises a bitstream source for providing a bitstream representing the information, a redundancy adding encoder for generating an encoded bitstream, which...
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6263030 |
Equalizer with channel tracker switching
An equalizer is provided for use in a mobile radio communication system for compensating for changing channel conditions caused by movement of a mobile communication device at varying speeds. The...
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6175555 |
Transmit/receive compensation
In a time division duplex (TDD) system, compensation measurements are made for the transmission circuitry during the receive portion of the TDD cycle and compensation measurements are made for the...
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6157820 |
Pilot strength measurement and multipath delay searcher for CDMA receiver
A method and apparatus for evaluating signal strength of a channel received at a mobile station within a spread spectrum communication systems is disclosed. If the receiver at the mobile station...
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6141534 |
Communication satellite system with dynamic downlink resource allocation
A communication satellite system dynamically allocates additional downlink resources on the satellite to selected downlink signals to compensate for signal degradation. A typical cause of such...
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6070051 |
Method and apparatus for predicting service availability for a ground-to-satellite radio of a communication system
A method and apparatus predicts a ground-to-satellite terminal's (16) percentage of successful communication linkage time to at least one satellite of a communication system in response to a...
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6070073 |
Communication system and method for notification and call routing in a mobile satellite network
A communication system and methodology are implemented to anticipate periodic or predictable disruptions of communications in a satellite communication network. The communication system and...
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6058306 |
Compensation of dynamic doppler frequency of large range in satellite communication systems
A communication system and a method of providing a feeder link to an earth orbiting satellite transponder having a mobile link illuminating spot beams with associated access channels, control...
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6046990 |
High-penetration transmission method for a radiocommunication system
A method and system for increasing the signal margin of a radiocommunication link to provide a short message service which is reliable, even under non-ideal conditions. According to the method, an...
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6011956 |
Means for predicting fading state in radio communication system
The object of the present invention is to provide a radio communication system capable of following change in fading. To attain the object, the transmitter in the radio communication system...
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5950113 |
Method and apparatus for inbound transmission in a two-way radio messaging system
A first portable subscriber unit (122, 602) of a plurality of portable subscriber units transmits (504) an inbound message (400) on an inbound channel. The inbound message is intended for a base...
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5933111 |
Apparatus and method for detection of antenna mispointing in satellite earth stations
An apparatus and method for detecting an antenna mispointing condition of an earth station. A noise floor detector, coupled to a received radio communications link signal, measures a noise floor of...
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5926767 |
Method and system reestablishing a temporarily interrupted dynamic communication link under intermittent fade conditions
In a dynamic communication system (90) wherein communication parameters vary between transmissions, subscriber units (200) are susceptible to intermittent link blockages. These blockages can result...
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5898707 |
Data sampling circuit and portable radio terminal device
A data sampling circuit samples radio signal data made up of plural successive sets of data, each set of data having a given number of data bits. A first shift register holds and shifts the data...
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