Patents
Patents for H04B 17 - Monitoring; Testing (29,423)
04/2002
04/17/2002CN1345520A Method and system for testing functioning of data communication in radio apparatus
04/17/2002CN1344938A Signal/interference ratio measuring method
04/17/2002CN1344936A Measuring system and method for industrial frequency current in opened magnetic path
04/17/2002CN1083230C Radio characteristic evaluating apparatus of mobile telecommunication device
04/16/2002US6374311 Communication network having a plurality of bridging nodes which transmit a beacon to terminal nodes in power saving state that it has messages awaiting delivery
04/16/2002US6374196 Method of fault diagnosis based on propagation model
04/16/2002US6374096 System and method for detecting interference present in mobile satellite communication links based on noise floor power levels of satellite communication links
04/16/2002US6374084 Method and system for calibrating electronic devices using polynomial fit calibration scheme
04/16/2002US6373878 Using a fast AGC as part of SIR calculation
04/16/2002US6373262 Method and apparatus for testing a signal line
04/16/2002CA2293128C Radio wave environment analyzer
04/16/2002CA2253487C Transceiver with rf loopback and downlink frequency scanning
04/11/2002WO2002030136A2 System and method for quantifying accuracy of interference analysis in a wireless telecommunications network
04/11/2002WO2002011295A3 Method and measuring device for measuring the spectra in adjacent channels
04/11/2002US20020042894 Testing of a radio transceiver
04/11/2002US20020042290 Method and apparatus employing a remote wireless repeater for calibrating a wireless base station having an adaptive antenna array
04/11/2002US20020042269 Systems and methods for determining signal coverage
04/11/2002US20020042268 Systems and methods for determining signal coverage
04/11/2002US20020041656 Method of measuring and improving XDSL transmission characteristic
04/11/2002US20020041584 Asynchronous interference avoidance technique in TDMA communications system
04/10/2002EP1195939A1 Redundant optical multiple-branch communication system
04/10/2002EP1005725B1 Method and apparatus for automatic channel measurements
04/10/2002CN1344448A Transmission gap interference measurement
04/10/2002CN1344446A Method for obtaining information regarding interference in receiver of message transmission system
04/10/2002CN1344089A Sewage management system
04/09/2002US6370572 Performance management and control system for a distributed communications network
04/09/2002US6369922 Wavelength division multiplex optical transmission apparatus
04/04/2002WO2002027984A2 Passive traffic channel and messaging testing for cdma systems
04/04/2002WO2002027983A2 Distance to fault measurement using multi-path cdma signals
04/04/2002WO2002027978A1 A transmitter-receiver device and a communication system
04/04/2002US20020039898 Method for detecting a shield in predicting radio wave propagation characteristics and system for use with the same method
04/03/2002EP1193907A2 Network test instrument
04/03/2002EP1193902A2 Signal break detecting circuit
04/03/2002EP1193897A2 Wireless transmission evaluation system and method
04/03/2002EP1193896A2 Method and apparatus for measuring output power of devices for mobile communications
04/03/2002EP1192742A1 Translator for time division multiple access wireless system having selective diversity circuits
04/03/2002EP1192741A1 Method and apparatus for supervising a potentially gated signal in a wireless communication system
04/03/2002CN2484713Y Short-message service field monitoring unit
04/03/2002CN1343408A Signal format in multi-carrier CDMA transmission system
04/03/2002CN1082287C System and method for simulating user interference in spread spectrum communications system
03/2002
03/28/2002WO2002025846A2 Calibration of a transmit branch and/or a receive branch of a quadrature transmitter and/or transceiver
03/28/2002WO2002025837A2 Method and apparatus for determining an operating condition in a communications system using antenna arrays
03/28/2002WO2001086826A3 Method of dynamic transmit scheduling using channel quality feedback
03/28/2002US20020037705 Method and apparatus for calibration of a wireless transmitter
03/28/2002US20020036810 Signal break detecting circuit
03/28/2002US20020036767 Method for monitoring an optical waveguide, as well as monitoring system and monitoring unit for said method
03/27/2002EP1191804A2 Path loss data normalization for growth management of a cellular system
03/27/2002EP1191719A2 Method and apparatus for signal quality estimation in a communication system
03/27/2002EP1191714A1 Method for monitoring an optical waveguide, monitoring system and monitoring unit for said method
03/27/2002EP1190519A1 Reducing interference probability in reception-side channel estimation in a radio telecommunication system
03/27/2002EP1190511A1 Method for estimating signal-to-noise ratio of digital carriers in an am compatible digital audio broadcasting system
03/27/2002CN1342374A Method and system for creating RF signature for signature region in wireless communication system
03/27/2002CN1342373A Method and system for comparing measured radio frequency signal propagation characteristics in wireless communication system
03/26/2002US6363245 Portable communication terminal which judges the reception situation by lowest error rate
03/26/2002US6363111 Control loop for adaptive multilevel detection of a data signal
03/26/2002US6363050 Switching control in cold standby type of duplex transmission system
03/21/2002WO2002001738A8 Method for improving the quality of data transmission
03/21/2002WO2001052568A3 Method and apparatus for testing wireless communication channels
03/21/2002US20020034951 Method for load control, and radio system
03/20/2002EP1189370A1 Pilot symbols transmission power
03/20/2002EP1189369A1 A method of modeling a CDMA cellular telephone system
03/20/2002EP1188264A1 System and method for supervising repeater by using wireless mobile
03/20/2002EP1016296B1 Communications system and method for testing of a communications apparatus
03/20/2002CN1341302A High dynamic range low ripple RSSI for zero-IF or low-IF receivers
03/20/2002CN1081415C Automatic test and warning system and test method for optical fibre and cable trunk and network
03/19/2002US6360085 System and method for receiving a signal
03/19/2002US6360077 Mobile radio communication device provided with functions for detecting and informing interference
03/19/2002US6359932 Verification of transmit power levels in a signal point limited transmission system
03/14/2002WO2002021714A1 Method and arrangement in a communication system
03/14/2002WO2002021704A2 Power margin control
03/14/2002WO2002021228A1 Self-diagnosis circuit of input/output circuit system
03/14/2002WO2001084181A3 Passive coherent location system and method
03/14/2002US20020032008 Method for measuring operation of cellular radio system, and cellular radio system
03/14/2002US20020031101 System and methods for interconnecting remote devices in an automated monitoring system
03/14/2002US20020030865 Optical distribution network system that performs system switching only when total operation condition is improved
03/13/2002EP1187376A2 Amplitude and phase normalization in a broadband receiver using a broadband temperature compensated noise source and a pseudo random sequence generator
03/13/2002EP1187354A1 Radio device and method of calibration of antenna directivity
03/13/2002EP1187317A2 Transmitter and wireless communication device
03/13/2002EP1186194A1 System for detecting cellular telephones in reception or operational standby mode
03/13/2002EP1186126A1 Method and apparatus for determining characteristics of components of a communication channel
03/13/2002EP1186125A1 Method for measuring confusion rate of a common packet channel in a cdma communication system
03/13/2002EP1186124A2 Apparatus for testing mobile phones
03/13/2002EP1186112A1 Method and apparatus for stability margin determination in a repeater
03/13/2002EP1186098A2 Measuring antenna signal strength with automatic gain control receiver
03/13/2002EP1032991B1 Received signal strength determination methods and systems
03/13/2002EP0997014A4 Mobile station locating system and method
03/13/2002CN1080977C Method for measuring noise level of base station environment and cellular communication system
03/13/2002CN1080959C Method and apparatus for power estimation in a communication system
03/12/2002US6356767 Method and apparatus for controlling mobile access to a wireless communication system
03/12/2002US6356739 Measurement method
03/12/2002US6356207 DSRC car-mounted equipment
03/07/2002WO2001076110A3 Method and apparatus for measuring channel state information
03/07/2002US20020028675 Method and apparatus for backhaul link diagnostic in a wireless repeater system
03/07/2002US20020027951 Real-time system for measuring the ricean K-factor
03/07/2002US20020027493 Remote signal transmission control including compensation for variations in transmitter components
03/06/2002EP1185129A2 Optical distribution network system that performs system switching only when total operation condition is improved
03/06/2002EP1185033A1 Multicasting method, multicasting system, mobile station and base station
03/06/2002EP1185009A2 Leak power ratio detection circuit, mobile communication terminal, and control circuit for mobile communication terminal
03/06/2002EP1184669A2 Waveform measuring method and apparatus
03/06/2002EP1183889A1 Method for measuring operation of cellular radio system, and cellular radio system