Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 7 - Radio transmission systems, i.e. using radiation field
Patents for H04B 7 - Radio transmission systems, i.e. using radiation field (186,426)
06/1997
06/25/1997CN1152828A Echo canceler gain tracker for cellular modems
06/25/1997CN1152824A Method and device of estimating transmission delay for compensation of orbit satellite transmitting
06/24/1997US5642361 Message transmission by means of a variable length frame
06/24/1997US5642358 Multiple beamwidth phased array
06/24/1997US5642355 Method of supporting extended range in a TDMA system
06/24/1997US5642353 Spatial division multiple access wireless communication systems
06/24/1997US5642348 Access director interface for narrowband/broadband information distribution network
06/24/1997US5642122 Spacecraft antennas and beam steering methods for satellite communciation system
06/24/1997US5642103 Transponder used in a remote identification system
06/24/1997US5642063 Current-saving detection for input signal level exceeding a threshold value
06/24/1997US5641134 Satellite cellular telephone and data communication system at an inclined orbit
06/23/1997CA2184946A1 Generation of cryptographic signatures using hash keys
06/22/1997CA2187832A1 Dtmf for downlink channel in a cellular/mobile/pcs telephone system
06/20/1997CA2187008A1 Communication satellite load balancing system and method
06/19/1997WO1997022217A1 A telecommunications system and a method of providing services to terminals in such a system
06/19/1997WO1997022214A1 Selective call transceiver and method of re-registering same
06/19/1997WO1997022189A1 Satellite direct radio broadcast system
06/19/1997WO1997022188A2 A mobile-link system for a radio communication system with diversity reception of selected uplink signals
06/19/1997WO1997022187A1 Emitter systems for the transmission of radio signals of a given emission frequency according to a predefined transmission time protocol
06/19/1997WO1997022186A1 Rf communication signal distribution system and method
06/19/1997WO1997022017A1 Gps translator with spread spectrum pilot
06/19/1997WO1997014049A3 Gps receiver and method for processing gps signals
06/19/1997WO1997008854A3 Time division duplex repeater for use in a cdma system
06/19/1997DE19547019A1 Verfahren zum Anzeigen des Zustands "Energiespeicher erschöpft" in Elektro-Geräten mit Elektro-Energiespeichern und Elektro-Geräten mit Elektro-Energiespeichern zum Anzeigen des Zustands "Energiespeicher erschöpft" A method for displaying the state "low energy store" in electrical appliances with electric-energy storage and electric appliances with electric energy storage devices for indicating the state "low energy store"
06/19/1997DE19546599A1 Sendeeinrichtung Transmitting device
06/19/1997CA2240021A1 A telecommunications system and a method of providing services to terminals in such a system
06/18/1997EP0779754A2 A method for selecting a wireless communications service provider in a multi-service provider environment
06/18/1997EP0779717A2 Method and system for controlling TDMA timing in satellite communication network
06/18/1997EP0779716A2 A system and method for a scalable and reliable transmission of electronic software distribution
06/18/1997EP0779518A1 Method and circuit of reception of satellite positioning signals with elimination of multipath errors
06/18/1997EP0779012A1 System and method for time slot and frequency allocation in a radio communications system
06/18/1997EP0779002A1 Method for maintaining time synchronization for a mobile station in a cellular digital radio system
06/18/1997EP0779001A1 Reception method and base station receiver
06/18/1997CN2256614Y Multifunctional hand-free mobile telephone adapter
06/18/1997CN1152384A Reverse link, closed loop power control in code division multiple access system
06/18/1997CN1152380A Method for rapid signal acquisition in satellite communications system
06/18/1997CN1152379A Airborne radiotelephone communications system
06/18/1997CN1152378A Device for optimal division of data into data blocks in time-division multiple access system
06/18/1997CN1152364A Method and apparatus for displaying information in communication system
06/18/1997CN1152356A Method and apparatus for location finding in CDMA system
06/18/1997CN1152249A Mobile communication system capable of effectively carrying out hand-over control
06/18/1997CN1152248A Method for selecting optimum relay station of portable telephone in frequency sharing telecommunication system
06/17/1997US5640695 For minimizing effects of multipath fading
06/17/1997US5640685 Mobile telephone device wherein an adder supplies a sum of audio and out-of audio band signals to a compressor circuit
06/17/1997US5640683 Modulated backscatter wireless communication system having an extended range
06/17/1997US5640679 Method and an apparatus for handing off mobile station from a first to a second channel in a mobile communication system
06/17/1997US5640678 Macrocell-microcell communication system with minimal mobile channel hand-off
06/17/1997US5640675 Method and system for reducing the time for connecting a mobile to a cellular base station
06/17/1997US5640673 Broadcasting satellite communication system with improved answer signal transmission
06/17/1997US5640672 Communication system for varying timing offset to accommodate variation in propagation delay
06/17/1997US5640432 Co-channel interference suppression system
06/17/1997US5640413 Digital mobile radio communication system
06/17/1997US5640396 Apparatus and method for synchronizing a rural wireless fixed access unit into a TDMA system
06/17/1997US5640395 System for transmitting packet data in digital cellular time division multiple access (TDMA) air interface
06/17/1997US5640386 Two-system protocol conversion transceiver repeater
06/17/1997US5640385 Method and apparatus for simultaneous wideband and narrowband wireless communication
06/17/1997US5640384 Reconfigurable communication network
06/17/1997US5640197 Peripheral unit for satelite multi-videoconferencing
06/17/1997US5640166 Method for compensating for doppler frequency shifts for satellite communication systems
06/17/1997US5640156 Mobile communication method
06/17/1997CA2110712C Telecommunications system using directional antennas
06/16/1997CA2192922A1 Method of and apparatus for data communications between portable information terminals
06/12/1997WO1997021298A2 Method of detecting operating states of an electrical apparatus and electrical apparatus for detecting apparatus-specific operating states
06/12/1997WO1997021296A1 Radio telecommunication network and method for unobtrusive call interception via transcoder bypass
06/12/1997WO1997021294A2 Cellular communication system with dynamically modified data transmission parameters
06/12/1997WO1997021287A1 System and method for frequency division duplex/time division duplex radio frequency communications
06/12/1997WO1997021286A2 System for automatic establishment of a radio link for data transmission between two or more transmitter-receiver stations
06/12/1997WO1997021284A1 Efficient apparatus for simultaneous modulation and digital beamforming for an antenna array
06/12/1997WO1997021283A2 Method of improving efficiency of radio channel usage in overlapping coverage areas
06/12/1997WO1997021282A2 Wireless packet data distributed communications system
06/12/1997WO1997021281A1 Mobile communications terminal for satellite communications system
06/12/1997WO1997021276A1 Local multipoint distribution system
06/12/1997WO1997021175A1 Mobile communications from computer aided dispatch system via a customer premises gateway for satellite communication system
06/12/1997DE19545893A1 System zum automatischen Aufbau einer Funkverbindung zur Datenübertragung zwischen zwei oder mehreren Sender-Empfänger-Stationen A system for automatically setting up a radio connection for data transmission between two or more transceiver stations
06/12/1997CA2239513A1 Efficient apparatus for simultaneous modulation and digital beamforming for an antenna array
06/12/1997CA2210792A1 Cellular communication system with dynamically modified data transmission parameters
06/11/1997EP0777951A2 Method and device at cellular telecommunication system
06/11/1997EP0777950A1 Method for identifying a fast speed mobile station, and a base station
06/11/1997EP0777939A1 Aerial switch for wireless aerial diversity telecommunications devices with two aerials
06/11/1997EP0777938A1 Power control method in a cellular communication system, and a receiver
06/11/1997EP0777933A1 Spread spectrum radiotelephone having adaptive transmitter gain control
06/11/1997EP0777863A1 Navigation information system
06/11/1997EP0425606B1 Mixed modulation level communication system
06/11/1997CN1151808A Spread-spectrum changeable base station
06/11/1997CN1151672A Echo Canceling method and apparatus for data over cellular
06/11/1997CN1151671A Mobile communication method and system
06/11/1997CN1151670A Echo canceling method and apparatus for data over cellular
06/11/1997CN1151639A Satellite communication system with variable number of satellite communication channels
06/10/1997US5638412 Method for providing service and rate negotiation in a mobile communication system
06/10/1997US5638408 Variable transmission bit rate discrimination method and apparatus
06/10/1997US5638403 Low-splatter peak-to-average signal reduction with interpolation
06/10/1997US5638399 Multi-beam satellite communication system with user terminal frequencies having transceivers using the same set of frequency hopping
06/10/1997US5638374 Enhanced transaction reservation
06/10/1997US5638372 Providing filler data to transmitters in a radio communication system
06/10/1997US5638369 Method and apparatus for inbound channel selection in a communication system
06/10/1997US5638362 Correlation detector and communication apparatus
06/10/1997US5638361 Frequency hopped return link with net entry channel for a satellite personal communications system
06/10/1997US5638024 Waste energy control and management in power amplifiers
06/10/1997CA2110149C High frequency signal detecting circuit
06/10/1997CA2088461C Method for determining the propagation time between a remote terminal station and a central terminal station in a point-multipoint bidirectional transmission network
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