摘要:
The present invention relates to a method for controlling a vector processor for jointly processing signals to be transmitted over, or received from, a group of vectored lines, and configured with a current set of vectoring coefficients. In accordance with an embodiment of the invention, the method comprises temporarily configuring the vector processor with a new set of vectoring coefficients during one or more selected symbol positions; restoring the current set of vectoring coefficients outside the one or more selected symbol positions; obtaining at least one error measure over respectively at least one line of the group of vectored lines during the one or more selected symbol positions; and determining a suitability indication for the new set of vectoring coefficients based on the obtained at least one error measure. The present invention also relates to a controller for controlling a vector processor, and to an access node including such a controller.
摘要:
The present invention relates to a communication controller (131; 132) and method for controlling communications between an access node (101; 102) and a plurality of remote communication units (211; 212) coupled to the access node via at least one wired transmission medium (20; 40). At least one communication unit (111, 211; 112, 212) of the access node and of the plurality of remote communication units is configured to operate in full-duplex mode according to a first full-duplex communication profile (OP1) when using a first subset of transmission resources (TSSET1; TONESET1) selected from a whole set of transmission resources available for communication over the at least one transmission medium, and according to a second full-duplex communication profile (OP2) when using a second nonoverlapping subset of transmission resources (TSSET2; TONESET2) selected from the whole set of transmission resources. The first full-duplex communication profile includes first downstream and upstream transmit power profiles (PSDDS1, PSDUS1) to achieve first aggregate downstream and upstream data rates (DSMAX1, USMIN1; DSMAX2, USMIN2) over the at least one transmission medium, and the second full-duplex communication profile includes second downstream and upstream transmit power profiles (PSDDS2, PSDUS2) to achieve second aggregate downstream and upstream data rates (USMAX1, DSMIN1; USMAX2, DSMIN2) over the at least one transmission medium distinct from the respective first aggregate downstream and upstream data rates. The present invention also relates to a so-configured full-duplex communication unit.
摘要:
A communication unit for communication on a plurality of transmission lines connecting the communication unit to another communication unit; comprising: a precoder comprising first and second output ports for outputting respective precoded generated signals and input ports for inputting first data signals, with more output ports than input ports; wherein the first output ports are coupled to first transmission lines, and are configured to output first precoded signals on the first transmission lines for transmitting the first data signals to the other communication unit and for mitigating at least far-end crosstalk on at least the first transmission lines; the second output ports are coupled to second transmission lines, and are configured to output second precoded signals on the second transmission lines for mitigating at least near-end crosstalk on at least the second transmission lines; the communication unit further comprises: receiver units configured for receiving second data signals.
摘要:
At least one example embodiment discloses a system including a processor configured to receive a plurality of upstream pilot signals from a plurality of remote transceivers, respectively, in a time domain, determine channel coefficients based on the plurality of upstream pilot signals, determine filter coefficients based on the channel coefficients and to control transmission of the upstream pilot signals in the time domain to physical layers of a plurality of processing devices, the plurality of processing devices configured to communicate with the plurality of remote transceivers through the processor.
摘要:
A method includes maintaining temporally parallel DSL data communication sessions with DSL modems of a group via a set of lines. In response to a substantial stop to reception of DSL communications from one of the DSL modems via one of the lines, the method includes transmitting a substantially reduced average power to the one of the lines and monitoring the one of the lines to determine whether reception of DSL communications has restarted from the one of the DSL modems. The method also includes resuming the maintaining of the temporally parallel DSL communication sessions in response to the monitoring determining that the reception of DSL communications from the one of the DSL modems has restarted.