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)
12/1991
12/27/1991EP0215049B1 Tdma/tdm interfacing
12/26/1991WO1991020142A1 Maximal ratio diversity combining technique
12/26/1991CA2019851A1 Frequency modulated radio frequency broadcast network employing a synchronous frequency modulated booster system
12/26/1991CA2019767A1 Onro
12/24/1991US5075697 Dual polarization transmission system
12/24/1991US5075095 Low pressure plasma enhanced vapor deposition; consolidation
12/24/1991CA1293534C Decision-directed control circuit
12/18/1991EP0461931A2 Adaptive equalizer capable of effectively removing a remaining fading in an equalized signal
12/18/1991EP0461380A2 Data transmission radio system, particularly cellular radio system
12/18/1991CN1057117A Wristwatch adapted to receive messages broadcast by radio
12/17/1991US5073971 Cellular radiotelephone communications system
12/17/1991US5073900 Integrated cellular communications system
12/12/1991WO1991019403A1 Cellular radio
12/11/1991EP0460866A2 A precision satellite tracking system
12/11/1991EP0460748A1 Receiver with at least two receiving branches
12/11/1991EP0460526A1 Wrist-watch provided with means for receiving radio messages
12/11/1991CN2090595U Channel scanner for program-controlled radio station
12/10/1991US5072445 Tdma satellite communications system operating in wide and narrow aperture modes for receiving bursts of various timing deviations
12/10/1991US5072229 Windshield antenna for an automotive vehicle
12/08/1991CA2044054A1 Wristwatch adapted to receive messages broadcast by radio
12/04/1991EP0459823A2 Diversity receiver using matched filter and decision feedback equalizer
12/04/1991EP0459447A1 Transmitter having battery power detecting means
12/04/1991EP0459000A1 Combining circuit for space diversity reception
12/03/1991US5070536 Mobile radio data communication system and method
12/03/1991US5070517 Method and circuit for retuning the frequency of a frequency source
12/03/1991CA1292781C Paging terminal apparatus with message storage and retransmission capability and method therefor
11/1991
11/28/1991WO1991018450A1 Method for assigning channel reuse levels in a multi-level cellular system
11/27/1991EP0458768A1 A method for determining the transmission quality of a home traffic connection in a mobile radio system
11/27/1991EP0458592A2 Passive cellular telephone antenna system
11/27/1991EP0458158A2 Method for assigning channel reuse levels in a multi-level cellular system
11/26/1991US5068668 Adaptive polarization combining system
11/26/1991US5068667 Cross-polarization interference canceller
11/26/1991CA1292584C Antenna selection control circuit
11/26/1991CA1292518C Pager having user selectable time controlled functions
11/21/1991EP0457542A2 Transceiver with Doppler correction
11/21/1991EP0457500A2 Dual linear and dual circular polarization antenna
11/21/1991EP0457460A2 Spacediversity switching receiver
11/21/1991EP0457448A1 Receiver systems
11/21/1991EP0456715A1 Cellular telephone system
11/19/1991US5067173 Microcellular communications system using space diversity reception
11/19/1991US5067172 Air to ground communications system and method
11/19/1991US5066957 Hybrid modulation satellite communication system
11/13/1991EP0456625A1 A method of transmitting different commands relating to the choice of transmitter antenna in a time multiplex radio communication system
11/13/1991EP0456337A2 Radio receiver antenna systems
11/13/1991EP0389559A4 Moldable/foldable radio housing
11/13/1991CN1014761B Microcellular communications system using macrodiversity
11/12/1991WO1991018458A1 A high frequency multichannel diversity differential phase shift (dpsk) communications system
11/12/1991US5065450 Frequency modulated radio frequency broadcast network employing a synchronous frequency modulated booster system
11/12/1991US5065449 Booster diversity receiving system usable with cellular booster
11/12/1991US5065411 Diversity receiving system for use in digital radio communication with means for selecting branch by estimating propagation path property
11/12/1991US5065398 TDMA satellite communication method and system
11/12/1991US5065162 Communication system for helicopter
11/12/1991CA2082626A1 High frequency multichannel diversity differential phase shift (dpsk) communications system
11/12/1991CA1292043C Method for dynamically allocating data channels on a trunked communication system
11/12/1991CA1292042C Acknowledge back pager with adaptive variable transmitter output power
11/07/1991DE4013562A1 Diversity radio receiving arrangement - receives radio signals spreading in several directions with combiner for spatial distributed antennae
11/06/1991EP0455388A2 Receiver
11/06/1991EP0454727A1 Active signalling transmitter control.
11/05/1991US5063595 Optical communications network
11/05/1991US5063573 Method for the equalization of dispersive, linear or approximately linear channels for the transmission of digital signals and arrangement for carrying out the method
11/05/1991US5063387 Doppler frequency compensation circuit
11/05/1991CA1291834C Registration of a new cordless telephone to an existing system
11/03/1991CA2041752A1 Private cellular telephone system
10/1991
10/31/1991WO1991016768A1 Receiver for satellite reception
10/30/1991EP0454585A1 An antenna selection diversity reception system
10/30/1991EP0454368A2 Adaptive diversity equipment arrangement for cellular mobile telephone systems
10/30/1991EP0454266A2 Receiver comprising a circuit for estimating frequency offset
10/30/1991EP0453591A1 Radiocommunication system using time-division digital frames
10/29/1991CA1291584C Mobile satellite communication system
10/29/1991CA1291537C2 Portable communications receiver with separated information presentation means and improved battery saving function
10/28/1991WO1991017606A1 Digital automatic gain control
10/28/1991CA2041290A1 Remote control apparatus
10/23/1991EP0453201A1 Control for adaptive equalizer
10/23/1991CN1055632A Self-powered base and remote telephone communication set
10/22/1991US5060292 Transmitting power control system
10/22/1991CA1291280C Phase-coherent tdma quadrature receiver for multipath fading channels
10/22/1991CA1291216C Satellite business communication system capable of monitoring a plurality of aperture terminals through a public communication network
10/20/1991CA2040061A1 Adaptive diversity equipment arrangement for cellular mobile telephone systems
10/17/1991WO1991013420A3 Vehicle-pedestrian communication system
10/17/1991WO1991013419A3 Method and device for rationalizing private journeys
10/17/1991DE4012199A1 Receiving several signals using diversity principle - applying phase shifting and discriminator to compensate for noise
10/16/1991EP0452289A1 Method of selecting the most suitable receiver antenna from two or more receiver antennas
10/16/1991EP0451960A2 Switching diversity receiving system
10/16/1991EP0451897A2 Apparatus and method for providing an adaptable interface between computers
10/16/1991EP0451564A2 Time-division multiplex communication method with rotating transmission signal
10/16/1991EP0451342A2 Radio receiver with two receiving systems
10/09/1991EP0450192A2 Central centre for vehicle auxiliary devices
10/09/1991EP0450062A1 Data and voice transmission over a cellular telephone system
10/08/1991US5056153 Mobile electric accessory apparatus
10/08/1991US5056152 Dual level prioritized vehicular repeater system
10/08/1991US5056109 Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system
10/08/1991CA1290402C Radio communication system having means for avoiding signal collision
10/08/1991CA1290401C Trunked radio repeater system
10/02/1991EP0449327A2 Noise-immune space diversity receiver
10/02/1991EP0448758A1 Method for the determination of FIR filter coefficients in equalizers
10/02/1991CN1014200B Digital automatic gain control
10/02/1991CN1014198B Power conservation method and apparatus for portion of synchronous information signal
10/02/1991CN1014196B Combination spatial diversity system
10/01/1991US5054112 Electronic data collection system
10/01/1991US5053783 High power low frequency communications by ionospheric modification
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