Patents
Patents for H04B 17 - Monitoring; Testing (29,423)
01/2002
01/30/2002CN2475234Y Universal remote-terminal controller
01/30/2002CN1333952A Method and apparatus for saving current while performing signal strength measurements in homodyne receiver
01/30/2002CN1078778C 传输分集系统 Transmit diversity systems
01/25/2002CA2353778A1 Subscriber loop repeater loopback for fault isolation
01/24/2002WO2002007352A1 Method and device for measuring an electric signal power
01/24/2002WO2002007343A1 Calibration device, adaptive array device, calibration method, program recording medium and program
01/24/2002WO2001052451A3 System and method for measuring in-band cross-talk in optical communication systems
01/24/2002US20020009992 Wireless system signal propagation collection and analysis
01/24/2002US20020009975 Method and system for transmitting, receiving and collecting information related to a plurality of working components
01/24/2002US20020009134 Method and apparatus for testing wireless communication channels
01/24/2002US20020008658 Apparatus for detecting signal
01/24/2002US20020008506 Electric power measuring method, system using the same and computer-readable medium
01/24/2002DE10032427A1 Verfahren und Vorrichtung zum Auswerten eines Funksignals Method and apparatus for evaluating a radio signal
01/23/2002EP1175033A2 Wavelength division multiplexing transmission system and transmitter and receiver therefor
01/23/2002EP1173940A2 Quality control method for digital radio transmissions in the medium and short wave range
01/23/2002CN2473821Y Underwater camera sealed cabin
01/23/2002CN2473820Y Pipeline inside TV monitoring and imaging device
01/22/2002US6341223 Radio wave propagation prediction method using urban canyon model
01/22/2002US6341024 Channel monitoring apparatus in a wavelength division multiplexing system
01/22/2002CA2204679C Self-testing transceiver
01/21/2002CA2353292A1 Wavelength division multiplexing transmission system and transmitter and receiver therefor
01/17/2002WO2002005473A1 A method of and a device for generating a signal having a predetermined quality criterion for use in or on a communication system
01/17/2002WO2002005465A1 Method and device for measuring cavitation
01/17/2002WO2001054299A3 A packet scheduler and method therefor
01/17/2002WO2001045276A3 Method and apparatus for detecting base station transceivers' malfunctions
01/17/2002US20020006159 Diversity reception employing periodic testing
01/17/2002US20020005968 Wavelength division multiplex transmission system and communication device
01/17/2002US20020005803 Passive coherent location system and method
01/17/2002DE10031005A1 Selbstdiagnostizierendes Übertragungssstem-Intelligenter Schleifring Selbstdiagnostizierendes Übertragungssstem-Intelligent slip ring
01/16/2002EP1171969A1 Method and apparatus employing wireless remote loopback capability for a wireless system repeater
01/16/2002EP1171961A1 Jitter measurement system and method
01/10/2002WO2002003580A2 Rf transmitter fault and data monitoring, recording and accessing system
01/10/2002WO2002003573A1 Base station unit and method for radio communication
01/10/2002WO2002003569A2 Method and device for evaluation of a radio signal with spatial diversity in the receiver
01/10/2002WO2002003403A2 Self-diagnosing transmission system
01/10/2002US20020004920 Apparatus and method for measuring bit error rate in an OFDM communication system
01/10/2002US20020003833 Method of antenna-weight estimation and mobile communication terminal
01/10/2002CA2352661A1 Wireless system signal propagation collection and analysis
01/09/2002EP1170885A1 Fading pitch measuring apparatus, fading pitch measuring method and portable information terminal using them
01/09/2002EP0934609B1 Calibration method and arrangement
01/09/2002CN1330266A High-speed data acquisition and real-time accumulation circuit for light-time domain reflectometer
01/09/2002CN1330265A Optical module for light-time domain reflectometer with wide dynamic range
01/08/2002US6338031 Computer-implemented inbuilding prediction modeling for cellular telephone systems
01/08/2002US6337975 System and method for power measurement in outdoor antenna units
01/08/2002US6337628 Omnidirectional and directional antenna assembly
01/08/2002US6337622 DSRC car-mounted equipment
01/03/2002WO2002001768A1 A method and arrangement relating to transceivers
01/03/2002WO2002001751A1 Radio base station unit and radio communication method
01/03/2002WO2002001738A1 Method for improving the quality of data transmission
01/03/2002WO2002001713A2 Dynamic range extension with gain correction
01/03/2002US20020002046 Propagation environment notification methods and notification systems in radio communication systems, and record media recording control programs thereof
01/02/2002EP1168867A2 Method and system for presentation of the radio environment to a user of a radio communication device
01/02/2002EP1168690A2 Method to dynamically determine interference and carrier-to-interference ratio during TDMA calls
01/02/2002EP1168689A1 Method of detecting and calculating external jammer signal power in communication systems
01/02/2002EP1168683A2 Method and system for supervision of an optical amplifier repeater system
01/02/2002EP1166579A1 Method and apparatus for measuring and optimising the quality of data transmission
01/02/2002EP1166578A1 Method and system for testing the functioning of data communication in a radio apparatus
01/02/2002EP1166470A1 Network switch for failure restoration
01/02/2002EP0713632B1 Automatic determination and tuning of pico-cell topology for low-power wireless systems
01/02/2002CN2469625Y Monitoring and controlling machine for circulating type wireless transmission of digital image
01/02/2002CN1077391C Radio telephone base station with monitoring apparatus
01/01/2002US6336040 Mobile radio system with control over radio wave output if a malfunction is detected
01/01/2002CA2199016C Signal processing apparatus
12/2001
12/30/2001CA2351984A1 Propagation environment notification methods and notification systems in radio communication systems, and record media recording control programs thereof
12/27/2001WO2001058014A3 Measuring antenna signal strength with automatic gain control receiver
12/27/2001US20010056331 Procedure and device for determining the signal-to noise ratio of a signal
12/27/2001US20010055972 Radio communication system and base stations and mobile stations in the system
12/27/2001US20010055967 Communication system
12/27/2001US20010055952 Automatic diagnostic for detection of interference in wireless communication system
12/27/2001US20010054889 Method of analyzing the spectrum of a radio communication system transmission signal
12/26/2001CN1328726A Method and arrangement for monitoring base station antenna condition
12/26/2001CN1328385A Automatic feedback system of monitor signals for transmitting and receiving mails
12/20/2001WO2001097421A1 Multiplexed signal quality display, method, and program, and recorded medium where the program is recorded
12/20/2001WO2001097414A1 In-service measurement of perceived speech quality by measuring objective error parameters
12/20/2001WO2001054288A3 Method for the decentralised management of measurement results in a radio communications system
12/19/2001EP1163743A1 System and method for estimating power
12/19/2001EP0737331B1 Control system and control means for controlling a quantity of such a control system
12/19/2001CN1327317A Multiple beam receiver
12/18/2001US6332072 Method and apparatus for detecting failures in a communication device BV signal metrics
12/18/2001US6331905 Network switch failure restoration
12/18/2001CA2213839C Cross-connect node for switching quality detector to incoming signal specified by request message from adjacent node
12/13/2001WO2001095646A1 Method and system for monitoring and controlling working components
12/13/2001WO2001095536A1 Multiplexed signal quality display, method, and program, and recorded medium where the program is recorded
12/13/2001WO2001095535A1 Apparatus, method, and program for displaying waveform quality of cdma signal, and recorded medium where the program is recorded
12/13/2001WO2001094957A1 Method for the determination of the average long-term power of a digital modulated signal
12/13/2001US20010052010 Method for controlling trap generation of SNMP
12/13/2001US20010050943 Radio frequency communication network having adaptive communication parameters
12/13/2001US20010050807 Method, device, and system for evaluating characteristics of optical fiber transmission line
12/13/2001US20010050648 Apparatus and method for determining return loss of an electrical device
12/13/2001DE10050936A1 Bidirektionales, selbstheilendes optisches Ringnetz mit gemultiplextem Hilfsträger Bi-directional, self-healing optical network with subcarrier multiplexed
12/12/2001EP1162804A2 Method and apparatus for monitoring information transmitted on network by using meta-information
12/12/2001EP1162763A1 Intermittent calibrator
12/12/2001EP1161807A1 Data transmission device and method
12/12/2001CN2465408Y Theft-proof monitoring control system for oil production field
12/11/2001US6330450 Detecting and minimizing the effects of transmitter noise on signal strength measurement in a wireless communication system
12/11/2001US6330439 Method for predicting radio-wave propagation losses by using improved interpolation scheme in radio network planning system
12/11/2001US6330438 Audible warning prior to losing cell call in progress
12/11/2001US6330432 Determining SIR in a communications system
12/11/2001US6330431 Method and apparatus for measuring signal quality in a wireless communication system
12/11/2001US6330278 Dynamic adaptive modulation negotiation for point-to-point terrestrial links