JOINT SIGNAL PROCESSING ACROSS A PLURALITY OF LINE TERMINATION CARDS

摘要

The present invention relates to a line termination card (1) for connecting subscriber devices through subscriber lines. in accordance with a first embodiment of the invention, the line termination card comprises: - a data output terminal (101; 10M) for outputting a data sequence (s1,t; sM,t), - a vectoring entity (20) for parsing and encoding the data sequence into frequency samples according to a carrier loading parameter (CL1; CLM), for scaling the frequency samples into scaled frequency samples (Z1, t, k; ZM, t, k) according to a carrier scaling parameter (CS1; CSM), and for processing the scaled frequency samples for crosstalk compensation, - a controller (30) for adjusting the carrier loading parameter and the carrier scaling parameter. - a forwarder (40) coupled to the data output terminal and to the controller for forwarding the data sequence, the carrier loading parameter and the carrier scaling parameter towards a further line termination card (1'). The present invention also relates to an access node comprising such a line termination card, and to a method for connecting subscriber devices through subscriber lines.