Patents
Patents for H04B 17 - Monitoring; Testing (29,423)
10/1999
10/28/1999WO1999054960A2 Phased array antenna calibration system and method using array clusters
10/27/1999EP0951791A1 Method and arrangement for the controlled generation of a traffic load in mobile radio systems
10/27/1999EP0655179B1 Method for testing a transceiver, and a base station of a time-divisional radiocommunication system
10/27/1999CN1233379A Method for determining speed of terminal, and receiver
10/27/1999CN1046069C Portable field strength detector capable of correcting frequency deviation contained in field strength detected value
10/26/1999US5974087 Waveform quality measuring method and apparatus
10/26/1999US5974083 Spread spectrum signal reception apparatus
10/26/1999US5974057 Method and apparatus for correcting a measured round-trip delay time in a wireless communication system
10/26/1999US5973601 Method of radio transmission between a radio transmitter and radio receiver
10/21/1999WO1999053637A1 Method and system for estimating the ability of a subscriber loop to support broadband services
10/20/1999EP0950332A2 Channel strength measurement shifting scheme
10/20/1999CN1232584A Method and apparatus for forming calibration signal
10/19/1999US5970396 Diversity receiver
10/19/1999US5970394 Method of detecting damaged cellular telephone facilities
10/19/1999US5968122 Method for propagating between views of connection object status in network
10/14/1999WO1999052313A1 A method for measuring the field strength map of an hf-broadcast transmitter
10/13/1999EP0949831A1 A method for measuring the field strength map of a HF-Broadcast transmitter
10/13/1999CN1231571A Method and equipment for determining forward and backward periodic line property in radio communication system
10/12/1999US5966405 Frequency deviation measuring device
10/12/1999US5966370 Method and signal evaluation means for determining the noise part in the signal mix of the reception signal of a CDMA reception means
10/07/1999WO1999037102A3 Method and communication system for processing alarms using a management network involving several layers of management
10/06/1999EP0947066A1 A method and an apparatus for determining the pathloss between a base transceiver station and a mobile station in a mobile radio network
10/06/1999CN1231086A Method for estimating angular spread of signal transmitted from transmitter to receiver and corresponding receiver
10/06/1999CN1231085A Method and apparatus for measuring link quality in spread spectrum communication system
10/05/1999US5963855 Method for extending the RSSI range and radio transceiver operating in accordance with this method
10/05/1999CA2188204C Communication control unit
09/1999
09/30/1999WO1999049689A2 Method and device for estimating the carrier-to-interference ratio in a radio communication system
09/30/1999WO1999049588A1 Method and system for providing an estimate of the signal strength of a received signal
09/30/1999WO1999049587A1 Timing control of transmission time slot
09/30/1999WO1999049581A2 Am quality detector
09/30/1999DE19813564A1 Verfahren und Vorrichtung zur Messung der Übertragungsqualität in Zellen von Mobilfunknetzen Method and apparatus for measuring the transmission quality in cells of mobile radio networks
09/30/1999DE19812923A1 Transmission and reception behaviour determination method for hand-held radio apparatus
09/29/1999EP0946008A2 Apparatus and method for communication control
09/29/1999EP0946007A2 Method and apparatus for measuring the transmission quality in cells of mobile radio networks
09/29/1999EP0945995A2 RAKE receiver with adaptive delay profile measurement
09/29/1999EP0945036A2 Communications system and method for testing of a communications apparatus
09/29/1999EP0944987A2 Voice path testing in telecommunications systems
09/29/1999EP0944986A2 An operational test device and method of performing an operational test for a system under test
09/29/1999EP0944968A2 Method and apparatus for estimating field strength
09/28/1999US5960353 Microcell load measurement using feedback control
09/28/1999US5960335 Digital radio communication apparatus with a RSSI information measuring function
09/28/1999US5960047 System and method for transmitting information signals
09/28/1999US5959583 Antenna adapter
09/28/1999US5959293 Defective portion detecting device with a horizontal synchronized signal
09/27/1999CA2233490A1 Pilot tone detector
09/23/1999DE19811895A1 Verfahren zum Bestimmen verschiedenartiger Fehler eines digitalen Sendermodulators A method for determining different types of errors a digital transmitter modulator
09/22/1999EP0944201A2 System and method for measuring channel quality in a communication system
09/22/1999EP0943928A2 Method of determination of several types of fault of a transmitter modulator
09/22/1999EP0904668A4 Adaptive capacity and quality improvements in cellular radio services by the removal of strong interference sources
09/21/1999US5956638 Method for unlicensed band port to autonomously determine interference threshold and power level
09/21/1999US5956619 Satellite controlled power control for personal communication user terminals
09/21/1999US5955917 Nonlinear amplifier calibration system and methods
09/16/1999WO1999046872A1 Testing device and method
09/16/1999WO1999046869A1 Correction of signal-interference ratio measurements
09/16/1999DE19810813A1 Data transmission method for radio communication system
09/16/1999DE19549600C2 FM frequency swing measurement device for RF emitted by sender
09/15/1999EP0942572A2 Portable communication terminal
09/15/1999CN1228644A System and method of testing overall and individual antennas of switched space diversity receiver
09/14/1999US5953669 Method and apparatus for predicting signal characteristics in a wireless communication system
09/14/1999US5953660 Supervisory audio tone detection using digital signal processing
09/10/1999WO1999033217A3 Method for frequency error estimation
09/09/1999DE19805647A1 Method of detecting the transmission quality of digital radio signals consisting of a regular sequence of data symbols separated by null symbols
09/08/1999EP0940931A2 Method for emulating multipath fading radio channels
09/07/1999US5950139 Radiotelephone with user perceivable visual signal quality indicator
09/07/1999US5950110 Jamming detection in a wireless security system
09/07/1999US5949988 Prediction system for RF power distribution
09/07/1999US5949776 Hierarchical communication system using premises, peripheral and vehicular local area networking
09/02/1999WO1999044385A1 Device and method for detecting the presence of an operating cellular telephone of the gsm type or any other mobile unit
09/02/1999WO1999044317A2 Protection of wdm-channels
09/02/1999CA2319028A1 Device and method for detecting the presence of an operating cellular telephone of the gsm type or any other mobile unit
09/01/1999CN1227446A Channel monitoring apparatus in wavelength division multiplexing system
08/1999
08/31/1999US5946631 Real-time CSMA method having the capability to adaptively vary cell sizes and a wireless network for implementing the same
08/31/1999US5946606 Internal wrap test circuit in radio equipment and test method thereof
08/31/1999US5946359 Parameter measuring apparatus for digital quadrature modulation signals
08/31/1999US5944844 Method for determining connection quality in a receiver utilizing a Viterbi decoder
08/26/1999CA2261981A1 A gain control arrangement and method
08/25/1999EP0938204A1 Calibration device for array antenna wireless receiver
08/25/1999EP0937312A1 Antenna adapter
08/25/1999EP0616742B1 Spatial division multiple access wireless communication systems
08/24/1999US5943617 Radio channel test system for mobile telecommunication system with test terminals in radio service zones of radio base stations
08/19/1999WO1999041842A1 Tuning method and transceiver unit
08/19/1999DE19823523C1 Base station testing method for radio communications system
08/18/1999EP0935897A1 Method of measuring traffic densities
08/18/1999CN1226107A Off-channel leakage power monitoring apparatus and method
08/17/1999US5940771 Network supporting roaming, sleeping terminals
08/17/1999US5940754 Method of fault identification for multiplexed devices
08/17/1999US5940749 Apparatus for eliminating external interference signals in code division multiple access mobile phone and method therefor
08/12/1999WO1999040689A1 Power control with signal quality estimation for smart antenna array communication systems
08/12/1999WO1999033204B1 Method and apparatus for determining characteristics of components of a communication channel under load
08/11/1999EP0935356A2 System for monitoring a digital bidirectional optical communication line
08/11/1999EP0935339A1 Versatile signal generator
08/11/1999EP0934609A1 Calibration method and arrangement
08/11/1999EP0688487A4 Method and apparatus for encoding/decoding broadcast or recorded segments and monitoring audience exposure thereto
08/10/1999US5937006 Frequency translating device transmission response method
08/10/1999US5937005 Error rate measurement apparatus for a mobile radio communications system
08/10/1999US5937004 Apparatus and method for verifying performance of digital processing board of an RF receiver
08/10/1999CA2165075C A method for validating a communication link
08/05/1999WO1999039529A1 Radio system and method for reducing signalling
08/05/1999WO1999039460A1 Tdma
08/05/1999DE19803691A1 Transmission channel control method for communication network