Patent ID: 7606315

Claim:
In a communication medium including a first set of n communication channels and a second set of m communication channels, a method for selecting sensor channels in said first set for quantifying crosstalk from said second set, the method comprising: a) operating said first set of communication channels in a receive-only mode; b) choosing a subset S 1 of size m of said n communication channels; c) estimating the expansion coefficients of said n communication channels as a predefined function of said subset S 1 and signals received by said n communication channels; d) choosing a candidate subset S 2 of size m of said n communication channels where the determinant of a matrix of said expansion coefficients corresponding to said subset S 2 is greater than the determinant of a matrix of said expansion coefficients corresponding to any other subset of size m of said n communication channels divided by a predefined bound D; e) calculating a threshold α; f) choosing a final subset S 2 that is an α-amplifier of said threshold α; and g) employing said communications channels in said final subset S 2 as sensor channels for quantifying crosstalk from said second set of communication channels.