Abstract: In a communication device, a multi-carrier signal with at least one group of signal carriers is received from a communication connection. For each of the signal carriers, at least one individual error value is evaluated or generated. From the individual error values, a combined error value is evaluated or generated. The combined error value is transmitted on a backchannel of the communication connection.

Abstract: In a communication device, a multi-carrier signal with at least one group of signal carriers is received from a communication connection. For each of the signal carriers, at least one individual error value is evaluated or generated. From the individual error values, a combined error value is evaluated or generated. The combined error value is transmitted on a backchannel of the communication connection.

Abstract: Vectored communication devices and methods are provided for communication via a plurality of communication connections. Communication on at least some of the communication connections is switchable between a low power mode and a regular mode.

Abstract: In a communication device, a multi-carrier signal with at least one group of signal carriers is received from a communication connection. For each of the signal carriers, at least one individual error value is evaluated or generated. From the individual error values, a combined error value is evaluated or generated. The combined error value is transmitted on a backchannel of the communication connection.

Abstract: In a method of transmission power control, transmission powers of transmission channels and/or transmission power spectral densities are adjusted so as to improve the transmission characteristics.

Abstract: The disclosure relates to a method of reducing crosstalk in a crosstalk cancelation system. The method comprises at least the steps of applying to the at least one first signal a crosstalk cancelation according to a set of crosstalk coefficients; monitoring crosstalk received in the at least one first signal at a first end of the first path during the application of the crosstalk cancelation; and updating the crosstalk coefficients during the monitoring. The disclosure also includes a device, which can carry out the method.

Abstract: For each channel of a plurality of channels of a Vector transmission system, a sequence of cross-coupling test signals representing a sequence of complex numbers may be transmitted or received. And for each channel of the plurality of channels a sequence of the real part of the sequence of complex numbers is different to a sequence of the imaginary part of the sequence of complex numbers.

Abstract: In an embodiment, a communication device is provided comprising transmit circuitry and crosstalk reduction circuitry. In an embodiment, the crosstalk reduction circuitry is configured to receive crosstalk information indicative of crosstalk between a plurality of communication connections for only a part of communication channels of said communication connections.

Abstract: In an embodiment, vector training signals are received. Noise affecting the training signals is evaluated, and a noise indication is thus determined.

Abstract: Embodiments related to far-end cross-talk coefficient updating in vector transmission systems are depicted and described herein.

Abstract: Representative implementations of devices and techniques communication circuitry configured to communicate via a plurality of transmission channels, the communication circuitry includes crosstalk reduction circuitry to reduce crosstalk for a part of the plurality of transmission channels, the part of the plurality of transmission channels is selected from the plurality of transmission channels depending on an error threshold value.

Abstract: An apparatus includes a transmitter configured to transmit data via a plurality of communication channels of a communication connection. The transmitter is further configured to transmit a same sequence for vector training on each of the communication channels. The sequences for at least two of the communication channels are shifted with respect to each other.

Abstract: Embodiments related to determining of coupling coefficients in a Vector transmission system are described and depicted.

Abstract: A method, wherein the following steps are iteratively repeated: providing each of a plurality of signals at a respective one of a plurality of transmission links; transmitting each of the plurality of signals over the respective one of the plurality of transmission links; and measuring signal-to-noise ratios of the plurality of signals transmitted over the plurality of transmission links, wherein an input power level of each of the plurality of signals is set such that the signal-to-noise ratios of the plurality of signals converge when measured after their transmission over the plurality of transmission links.

Abstract: The disclosure relates to a method of reducing crosstalk in a crosstalk cancelation system. The method comprises at least the steps of applying to the at least one first signal a crosstalk cancelation according to a set of crosstalk coefficients; monitoring crosstalk received in the at least one first signal at a first end of the first path during the application of the crosstalk cancelation; and updating the crosstalk coefficients during the monitoring. The disclosure also includes a device, which can carry out the method.

Abstract: Representative implementations of devices and techniques communication circuitry configured to communicate via a plurality of transmission channels, the communication circuitry includes crosstalk reduction circuitry to reduce crosstalk for a part of the plurality of transmission channels, the part of the plurality of transmission channels is selected from the plurality of transmission channels depending on an error threshold value.

Abstract: In some embodiments, sequences of pilot signals on different communication channels of a communication convection are shifted with respect to each other. In other embodiments, crosstalk couplings are calculated based on intermediate vectors.

Abstract: Methods and devices are disclosed involving crosstalk reduction depending on weighting factors or grouping of transmission channels. In other embodiments, other methods or devices may be used.

Abstract: In an embodiment, a communication device is provided comprising transmit circuitry and crosstalk reduction circuitry. In an embodiment, the crosstalk reduction circuitry is configured to receive crosstalk information indicative of crosstalk between a plurality of communication connections for only a part of communication channels of said communication connections.

Abstract: Embodiments related to far-end cross-talk coefficient updating in vector transmission systems are depicted and described herein.