The present invention relates to a vectoring controller (130) for configuring a vectoring processor (120) that jointly processes DMT communication signals (u 1 ..u N ; y 1 ..y N ) to be transmitted over, or received from, a plurality of N subscriber lines (L 1 ..L N ) according to a vectoring matrix (P k ; Q k ).
In accordance with an embodiment of the invention, the vectoring controller is adapted, for given ones (k) of a plurality of tones, to enable the given tone for direct data communication over a first set of N-M k targeted lines (A k ) out of the plurality of N subscriber lines, and to disable the given tone for direct data communication over a second disjoint set of M k supporting lines (B k ) out of the plurality of N subscriber lines, M k denoting a non-null positive integer. The vectoring controller is further adapted to configure the vectoring matrix to use an available transmit or receive power at the given tone over the second set of M k supporting lines for further enhancement of data signal gains at the given tone over the first set of N-M k targeted lines.
The present invention also relates to a method for configuring a vectoring processor.