Patents
Patents for H04B 3 - Line transmission systems (31,523)
09/2002
09/04/2002EP1236340A1 Echo canceller in a communication system at a terminal
09/04/2002EP1236324A2 Frequency-domain equalizer for single carrier digital television
09/04/2002EP1236323A1 Method and apparatus for reliable reception of vdsl signals
09/04/2002EP1236321A1 Multichannel adaptive equaliser
09/04/2002EP1236290A1 Coupling device
09/04/2002EP1236284A1 Signal level adjustment arrangement
09/04/2002EP1236274A1 Amplifier ctb reduction by phase filtering
09/04/2002EP1236247A1 Assembly for transmitting information via a low-voltage power supply network
09/04/2002EP1236085A1 Method of linking authorized users to a plurality of devices
09/04/2002EP0775390B1 Device for correcting the amplitude/frequency characteristic of a signal from a cable, and frequency equaliser therefor
09/04/2002CN1367978A Adaptability to multiple hands-free communication accessories
09/04/2002CN1367977A Methods and apparatus for improved sub-band adaptive filtering in echo cancellation systems
09/04/2002CN1367976A Methods and apparatus for improving adaptive filter performance by inclusion of inaudible information
09/04/2002CN1367972A Method for generating reliability information for decoding channel of radio receiver and corresponding radio receiver
09/04/2002CN1367602A Echo signal suppressor
09/04/2002CN1367585A Signal transmission equipment for preventing error transmission and its method
09/03/2002US6445792 Echo canceller for decreasing a deterioration factor of a speech quality
09/03/2002US6445471 Apparatus and method for making transmission characteristics uniform in a wavelength division multiplexing optical communications system
09/03/2002US6445087 Networking power plug device with automated power outlet control
08/2002
08/29/2002WO2002052805A3 Power cutback configuration of digital subscriber line transceivers using public switched telephone network signaling
08/29/2002WO2002039599A3 Data communication over power lines
08/29/2002WO2002039230A3 Network quality of service localizer
08/29/2002WO2001098618A8 Burst qam downhole telemetry system
08/29/2002US20020120897 Test generator having a poisson distribution error signal
08/29/2002US20020119753 Programmable echo cancellation filter
08/29/2002US20020118822 Method and apparatus for echo cancellation
08/29/2002US20020118821 Signal detector with echo cancellation
08/29/2002US20020118741 Waveform equalization apparatus
08/29/2002US20020118652 Method of optimal power distribution for communication systems
08/29/2002US20020118101 Data communication over a power line
08/29/2002US20020118023 Detection of devices on a local area network
08/29/2002DE10105252A1 Verfahren zur Kanalmessung bzw.-schätzung in PLC-Übertragungssystemen Method for channel estimation in measurement or-PLC transmission systems
08/29/2002DE10103530A1 Anschlussvorrichtung zum Verbinden einer Übertragungseinrichtung mit einer Energieversorgungsleitung Connection device for connecting a transmission device to a power supply line
08/28/2002EP1235402A2 Head end receiver for digital data delivery systems using mixed mode SCDMA and TDMA multiplexing
08/28/2002EP1235363A1 Wireless receiving device and method of detecting branch-to-brance delay difference in wireless receiving device
08/28/2002EP1234439A1 Subscriber line qualification with neural networks with respect to data transmission characteristics
08/28/2002EP1234386A1 Method of implementing a repeater, and a transceiver unit
08/28/2002EP1234353A1 Electromagnetic field in a communications system for wireless networks
08/28/2002EP1155507B1 Circuit for jointly transmitting voice and data over a telephone line
08/28/2002EP0602249B1 Maximum likelihood sequence estimating device and method therefor
08/28/2002CN2508320Y Teaching management monitor
08/28/2002CN1366385A Receiver with adaptive qualizer and base line drift compensator
08/27/2002US6442379 Radio apparatus and method having a d.c. component signal superposed on a transmission-signal
08/27/2002US6442274 Method and apparatus of canceling echoes in multi-channel
08/27/2002US6442273 Echo canceller and echo cancelling method
08/27/2002US6441723 Highly reliable power line communications system
08/27/2002US6441721 Data transmission apparatus and data reception apparatus
08/27/2002US6441695 Methods for transmitting a waveform having a controllable attenuation and propagation velocity
08/27/2002US6441639 Circuit module connected to a transmission line including arrangement to suppress reflections at a branch point of the transmission line
08/23/2002CA2368579A1 Head end receiver for digital data delivery systems using mixed mode scdma and tdma multiplexing
08/22/2002WO2002065747A1 Data communication over a power line
08/22/2002WO2002065737A2 System and method for fault isolation for dsl loop extenders
08/22/2002WO2002065684A2 Data communication over a power line
08/22/2002WO2002065606A2 Energy pathway arrangements for energy conditioning
08/22/2002WO2002025822A3 Multimedia communications over power lines
08/22/2002WO2001097391A3 Method and apparatus for transmitting data with reduced coupling noise
08/22/2002WO2000027097A9 Fault conditions affecting high speed data services
08/22/2002US20020116342 Domestic electrical apparatus, subscriber registering method, order receiving method, and data processing system
08/22/2002US20020115412 Method and device for channel estimation, in particular for a cellular mobile telephone
08/22/2002US20020114472 Method for active noise cancellation using independent component analysis
08/22/2002US20020114445 Method and apparatus for network echo cancellation using a proportionate normalized least mean squares algorithm
08/22/2002US20020114383 Systems and methods for characterizing transmission lines using broadband signals in a multi-carrier DSL environment
08/22/2002US20020114285 Data rate controller
08/22/2002US20020113718 Burst QAM downhole telemetry system
08/22/2002US20020113689 Method and system for using power lines for signaling, telephony and data communications
08/22/2002US20020113665 Equalizing device for cable distribution network
08/22/2002US20020113649 Long subscriber loops using modified load coils
08/22/2002CA2437042A1 Apparatus and method for coupling data to and/or from a power line
08/22/2002CA2428833A1 Energy pathway arrangements for energy conditioning
08/21/2002EP1233603A2 Methods and apparatus for verifying transmit power levels in a signal point limited transmission system
08/21/2002EP1233585A1 Channel sounding system
08/21/2002EP1233565A2 Turbo-reception method and turbo-receiver for a MIMO system
08/21/2002EP1233539A1 Receiver and adaptive equalizing method
08/21/2002EP1233538A2 Power line communications system
08/21/2002EP1233533A1 Wire communication device, wire communication apparatus, wire communication method, and wire communication system
08/21/2002EP1232660A1 A digital communication receiver containing a channel tracker and a method for the operation thereof
08/21/2002EP1232644A1 A system and method for echo cancellation
08/21/2002EP1232642A1 Voice and data exchange over a packet network
08/21/2002EP1232637A1 Method for controlling dsl transmission power
08/21/2002EP1232636A1 Method and apparatus for impairment diagnosis in communication systems
08/21/2002EP1232634A1 Non-contact signal analyzer
08/21/2002EP1232617A1 Methods, receiver devices and systems for whitening a signal disturbance in a communication signal
08/21/2002EP1232569A2 Method and apparatus for characterization of disturbers in communication systems
08/21/2002EP1232568A1 Highly reliable power line communications system
08/21/2002CN1365582A Subscriber station with duplex antenna amplifier
08/21/2002CN1089524C Blind multipath correction for digital communicaltion channel
08/21/2002CN1089513C Two-wire modem and its communication method
08/21/2002CN1089497C Method and filter for isolation upstream ingress noise in bi-directional cable system
08/20/2002US6438225 Method and system for detecting and controlling severe echo
08/20/2002US6438163 Cable length and quality indicator
08/20/2002US6438118 Code-multiplexing communication apparatus
08/20/2002US6437685 Cordless power transmission system, power transmission terminal and electrical appliance
08/20/2002US6435884 Two-wire type wiring case
08/15/2002WO2002063880A1 Multi-band coax extender for in-building digital communication systems
08/15/2002WO2002063813A2 Crosstalk identification in xdsl systems
08/15/2002WO2002030003A3 Power line networking apparatus and method
08/15/2002WO2002025834A3 Interference compensator device
08/15/2002US20020110311 Apparatus and method for providing a power line communication device for safe transmission of high-frequency, high-bandwidth signals over existing power distribution lines
08/15/2002US20020110310 Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line
08/15/2002US20020110221 System and method for fault isolation for DSL loop extenders