Infineon Technologies Ag

Lantiq Deutschland Gmbh

Reinhard Stolle

Thyagarajan Umashankar

Gert Schedelbeck

Stefan Krause

Bernd Heise

Lajos Gazsi

Stefan Uhlemann

Umashankar Thyagarajan

A communication device includes a transmitter operable to couple to a plurality of transceivers via a plurality of transmission channels, transmit payload data via the plurality of transmission channels, and obtain monitored transmission conditions for one or more transmission channels in the plurality of transmission channels. During operation, the transmitter is further operable to generate reconfiguration request signals resultant from processing the monitored transmission conditions and transmit the reconfiguration request signals on transmission channels in the plurality of transmission channels.

Reconfigurable communication device and method

Methods and systems for transmitting and receiving data over a communication channel between two transceiver stations are disclosed. A first decision is made during an initialization process, wherein the first decision comprises selecting a first subset of communication parameters. A second decision is made during the initialization process wherein the second decision comprises deciding whether one or more of the communication parameters of the first subset are to be changed depending on information collected about the communication channel.

Method and system for transmitting and receiving data over a communication channel between two transceiver stations

A device for determining an information indicating a length of a part of a first cable, the first cable connecting a first transceiver unit and a first subscriber device, wherein the part of the first cable extends from the first transceiver unit to a point of the first cable from where a second cable, which connects a second transceiver unit to a second subscriber device, joins the first cable to extend from the second transceiver unit to the second subscriber device, the device comprising an input to couple the device to the second cable, a first apparatus coupled to the input to measure a quiet line noise related to crosstalk from the first cable to the second cable, and a second apparatus to determine information indicating the length of the part of the first cable based on the quiet line noise.

Determining information indicating a length of a part of a first cable

A method and device are provided for producing a transmission signal to be transferred over a transmission path from an input signal, for example an xDSL signal, wherein a bandwidth of the input signal is distributed onto a plurality of frequency bands in such a way that part signals are obtained corresponding to the individual frequency bands, and wherein each part signal is conducted to separate line drivers, and wherein output signals of the individual line drivers are combined to form the transmission signal to be transferred over the transmission path by combination means, which can be designed as an adder. In order to obtain the frequency band which pertains in each case from the input signal, which can be transformed into an analogue signal with a D/A converter, filter means can be used.

Method and device for producing a transmission signal to be transferred over a transmission path

A UPBO is performed based on an attenuation of a first VDSL-cable connecting a first VDSL-CPE and a first VDSL-CO, and also based on an attenuation or electrical length of cable pieces between said first VDSL-CO and a further distant second VDSL-CO. Further, an extended DPBO for the first VDSL-CO is described not only regarding ADSL-cables originating from an ADSL-CO but also VDSL-cables from the further distant second VDSL-CO.

Adjusting transmit power spectra of transceiver devices in a communications network

A method and a device are provided for the echo compensation of a reception signal, a transmission signal being composed of a plurality of transmission subsignals which are generated in a corresponding plurality of signal paths, and a transmission combination signal, which corresponds to a combination of the plurality of transmission subsignals, being delivered to an echo compensation filter in order to generate the echo compensation signal from it. The distribution of the transmission signal may be carried out by distributing of a frequency bandwidth of the transmission signal between a plurality of frequency bands. The method and the device are designed inter alia for the processing of xDSL signals, in particular VDSL2 signals.

Method and device for the echo compensation of a reception signal

A device for adjusting a transmit power spectrum of a first transmit/receive device of a communication network, comprising a means for receiving a measure for an attenuation which a signal experiences on a line from the first transmit/receive means to a first subscriber device of the communication network connected to the first transmit/receive means, from the first subscriber device, and a means for determining the transmit power spectrum of the first transmit/receive means for a communication of the first transmit/receive means with the first subscriber device based on the received attenuation measure.

Adjusting a transmit power spectrum of a transmit/receiver device of a communication network

A device for adjusting a transmit power spectrum of a subscriber device of a communication network, having a means for receiving an attenuation measure for an attenuation, which a signal experiences on its way from a transmit/receive means to the subscriber device of the communication network connected to the transmit/receive means, from the subscriber device, a means for determining a modified attenuation measure and shaping coefficients for a frequency-dependent shaping of the transmit power spectrum based on the attenuation measure determined by and received from the subscriber device, and a means for transferring the modified attenuation measure and the shaping coefficients to the subscriber device.

Adjusting a transmit power of a subscriber device of a communication network by a transmit/receive means

Interpolation filter circuit for a digital communication device for the filtering and clock-rate conversion of a digital input signal received from a data source with a symbol-clock data rate, having

Interpolation filter circuit

Methods and apparatus are provided for changing the rate of time-discrete signals. When changing the rate or for the interpolation of time-discrete input values (xn), output values (yk) of an output signal are produced. If the frequency of the output signal is greater than the frequency of the input signal and the shape of the output signal essentially corresponds to the shape of the input signal, the difference between a first and a second input value (xn, xn-1) subsequent to this is determined, interpolation values (PO . . . PN) of an interpolation progression (p) are scaled in dependence on the difference determined and output values (yk) in each case are produced by addition of the first input value (xn) to a scaled interpolation value (PC . . . PN).

Method and apparatus for changing the rate of time-discrete signals

A transformer circuit arrangement has a first transformer ( ) with a first lower limit frequency (fu ) and a first upper limit frequency (fo ), and a second transformer ( ) with a second lower limit frequency (fu ) and a second upper limit frequency (fo ), whereby the first lower limit frequency (fu ) is smaller than the second upper limit frequency (fu ), and the second upper limit frequency (fo ) is greater than the first upper limit frequency (fo ), the second lower limit frequency (fu ) is preferably not greater or smaller than the first upper limit frequency (fo ) by a factor of 10, at least one input ( ) of the first transformer is electrically connected to an input ( ) of the second transformer, and at least one output ( ) of the first transformer is connected to an output ( ) of the second transformer, and the transformer circuit arrangement has a band pass behaviour with a lower overall limit frequency (fuges) and an upper overall limit frequency (foges), whereby the lower overall limit frequency (fuges) is smaller than the first upper limit frequency (fo ) and the second lower limit frequency (fu ), and whereby the upper overall limit frequency (foges) is greater than the first upper limit frequency (fo ) and the second upper limit frequency (fo ).

Growing community of inventors

Neufahrn, Germany

Reinhard Stolle