Patents
Patents for H04B 7 - Radio transmission systems, i.e. using radiation field (186,426)
01/1994
01/11/1994US5278891 Ground-to-air telephone calling system and related method
01/11/1994US5278866 Radio communication apparatus with stored coding/decoding procedures
01/11/1994US5278863 Radio frequency broadcasting systems and methods using two low-cost geosynchronous satellites
01/11/1994US5278835 Mobile radio communication system
01/11/1994US5278833 Method for providing reserved communication access using multiple random access resources
01/11/1994US5278832 Method and apparatus for controlling the timing within a transceiver
01/11/1994US5278831 Information transmission system
01/11/1994US5278690 Apparatus and method for synchronizing a plurality of remote transmission and receiving stations and providing automatic gain control of the synchronizing signal
01/11/1994US5278568 Method of and apparatus for two-way radio communication amongst fixed base and mobile terminal users employing meteor scatter signals for communications inbound from the mobile terminals and outbound from the base terminals via Loran communication signals
01/11/1994CA2029675C Carrier regenerating device correctly operable in mobile satellite communication
01/07/1994CA2098259A1 Communication system employing spectrum reuse on a spherical surface
01/06/1994WO1994000938A1 A method and an arrangement for frame detection quality estimation in the receiver of a radio communication system
01/06/1994WO1994000932A1 Cellular communications test system
01/06/1994WO1994000927A1 Power level increase during handoff command transmission
01/06/1994WO1994000926A1 Method and apparatus for power estimation in an orthogonal coded communication system
01/06/1994WO1994000925A1 Fault tolerant radio communication system controller
01/06/1994WO1994000924A1 A method and an arrangement of estimating transmitted symbols at a receiver in digital signal transmission
01/06/1994CA2136543A1 Power level increase during handoff command transmission
01/06/1994CA2135176A1 Cellular communications test system
01/06/1994CA2114715A1 A method and an arrangement for frame detection quality estimation in the receiver of a radio communication system
01/05/1994EP0577520A1 Antenna for a secondary radar in S-mode
01/05/1994EP0576532A1 Information system.
01/05/1994CN2152355Y Wireless moveable telephone charger
01/05/1994CN2152354Y Number and speech compatible station
01/05/1994CN1080445A Method and system for enhanced data transmission in a cellular telephone system
01/05/1994CN1080444A Paging system that allows caller/subscriber interconnection
01/05/1994CN1080443A Cell-type telephone system with extewded cell
01/04/1994USRE34499 Frequency modulated radio frequency broadcast network employing a synchronous frequency modulated booster system
01/04/1994US5276920 In a mobile telephone
01/04/1994US5276918 Mobile radio telephone with booster unit
01/04/1994US5276917 Transmitter switch-on in a dual-mode mobile phone
01/04/1994US5276713 Method of frame synchronization for digital mobile radio communication
01/04/1994US5276685 Digital automatic gain control
01/04/1994CA2099703A1 Antenna for a secondary radar operating in s-mode
12/1993
12/29/1993EP0576359A1 Method and apparatus for decision feedback equalisation for the block transmission of information symbols
12/29/1993EP0576209A1 Remote charging cradle for cordless telephone handset
12/29/1993EP0575746A1 Method and device for optimizing the radio link for a digital radio transmission system in difference of space and/or angle by varying the relative attenuation level between the two channels
12/29/1993EP0575678A1 Medium-earth-altitude satellite-based cellular telecommunications system
12/29/1993EP0575513A1 Electronic billboard and vehicle traffic control communication system
12/29/1993EP0477183B1 Space-diversity digital radio mobile receiver and relevant process
12/29/1993CN2151587Y Connector of dismountable simplex mode movable telephone
12/29/1993CN1080099A A method for eliminating acoustic echo in a communication device
12/28/1993US5274844 Beam pattern equalization method for an adaptive array
12/28/1993US5274840 Satellite communication system
12/28/1993US5274694 Radio communication network based on digital local exchanges
12/28/1993US5274670 Method of equalization in digital mobile communication with improved tracking ability
12/28/1993US5274665 Polyopoly overlapping spread spectrum communication system and method
12/28/1993US5274627 Non-regenerative multibeam satellite communications system with FDMA access and SSTDM connectivity
12/28/1993US5274626 Earth station capable of carrying out communication without a control station
12/28/1993US5274388 Antenna device
12/28/1993US5274369 Radio paging receiver consuming less electric power
12/28/1993US5274320 Method for charging radio telephone system
12/23/1993WO1993026102A1 Channel re-assignment method for time division multiple access (tdma) trunked systems
12/23/1993WO1993025052A1 Voice/data radio communication system
12/23/1993CA2114851A1 Adaptive communication system for transmitting voice/data
12/22/1993EP0575246A1 Isofrequency broadcasting of a single program with sequence of antennas having orthogonal polarisation for two consecutives antennas
12/22/1993EP0575203A1 Antenna switching circuit for a diversity receiver
12/22/1993EP0574751A2 Equaliser circuit for radio signals
12/22/1993CN2150679Y Simplex wireless movable communication telephone
12/22/1993CN1023283C Synchronizing method in mobile radio system
12/21/1993CA2018263C Mobile telephone device for carrying out an aging operation without interference with a mobile telephone system
12/21/1993CA2001339C Repeater for a controlled radio system
12/15/1993EP0573856A1 Radio transceiver
12/15/1993EP0573841A1 Radio paging receiver capable of establishing clock synchronization even in the absence of a preamble signal
12/15/1993EP0573417A1 Shared-carrier frequency-hopping.
12/15/1993CN1023182C Power-saving type calling receiver
12/15/1993CN1023177C High bit rate communication system for overcoming multipath interference
12/14/1993US5271043 Device and method for the data transmission or storage optimizing the use of the pass-band
12/14/1993US5270721 Planar antenna
12/14/1993US5270669 Local oscillating frequency synthesizer for use in a TDMA system
12/14/1993CA2045693C Satellite based simulcast paging system
12/09/1993WO1993025022A1 Data communication receiver having burst error protected data synchronization
12/09/1993WO1993025019A1 Compensator for interference between cross polarizations and cross polarization interference eliminator using the compensator
12/09/1993CA2136864A1 Data communication receiver having burst error protected data synchronization
12/08/1993EP0573073A2 Transmitter power level control device with bias stabilization
12/08/1993EP0573072A2 Power control device for controlling the output level in digitally modulated radio signals
12/08/1993EP0572859A1 Method and device for automatic gain control in a space/angle diversity digital radio receiver
12/08/1993EP0572858A1 Method for minimizing the the IF-estimated bit error rate function in a space/angle diversity digital radio receiver
12/08/1993EP0341238B1 Automatic antenna tuning system for portable communication devices
12/08/1993CN1079348A Mobile data terminal with external antenna
12/08/1993CN1079347A Cell Extension in a cellular telephone system
12/07/1993US5268933 Data packet alignment in a communication system
12/07/1993US5268694 Communication system employing spectrum reuse on a spherical surface
12/01/1993EP0572171A1 Method and apparatus for providing time diversity for multipath fading channels
12/01/1993EP0571919A1 Demodulating apparatus using transversal equalizer and decision feedback type equalizer
12/01/1993EP0571847A1 Pager with low power consumption
12/01/1993EP0571745A1 Cellular mobile radio system with multiplicity of CDMA carriers for ISDN applications
12/01/1993EP0571740A1 TDMA communications between satellites, with distance dependant transmission duration
12/01/1993EP0536334A4 System and method for generating signal waveforms in a cdma cellular telephone system
11/1993
11/30/1993US5267297 Base station for a radio communication system
11/30/1993US5267268 Method for reducing the risk of poor reception in a mobile telephony system
11/30/1993US5267262 Transmitter power control system
11/28/1993CA2096201A1 Safety phone
11/28/1993CA2095960A1 Receiver for local calls with low energy consumption
11/27/1993CA2092743A1 Simultaneous tdma communication system
11/25/1993WO1993023935A1 Mobile radio network with central cell beaming
11/25/1993WO1993023767A1 Electronic system and method for remote identification of coded articles and the like
11/24/1993EP0571124A1 Mobile data terminal
11/24/1993EP0571104A2 Data transmission in a cellular telephone system
11/24/1993EP0571029A2 Mobile radio system with group call handover