Patent ID: 8614939

Claim:
A method for crosstalk channel estimation, comprising: receiving, at a transceiver corresponding to a newly added line K, a signal comprising a combination of K−1 signals sent on lines 1 to K−1; obtaining, at the transceiver, a signal-to-noise ratio (SNR) of the line K in response to the reception of the signal; and calculating, at the transceiver, crosstalk channels of the line K according to K−1 coefficients associated with the K−1 signals sent on the lines 1 to K−1 and the SNR; wherein the signal received on the line K is represented by: y k ( n ) ⁡ ( l ) = ∑ i = 1 K ⁢ h K , i ⁢ x i ( n ) ⁡ ( l ) + w K ( n ) ⁡ ( l ) = h K , K ⁢ s K ( n ) ⁡ ( l ) + ∑ i = 1 K - 1 ⁢ ( h K , i + ɛz i ( n ) ⁢ h K , K ) ⁢ s i ( n ) ⁡ ( l ) + w K ( n ) ⁡ ( l ) wherein, h K,K indicates a channel transfer function of pair K; ε indicates a step; z i (n) indicates a combination coefficient of line i during SNR measurement n; s i (n) (l) denotes a signal to be sent on symbol l of line i during SNR measurement n; x K (n) (l) denotes a signal actually sent on the line K, W k (n) (l) indicates background noise, h K,i indicates a crosstalk transfer function of line i to line K.