Patent ID: 7826338
Filing Date: 2010-11-02
Classification: G01R,H04B,H04L

Abstract:
1. A method for adaptive power adjustment based on reduction of crosstalk between Digital Subscriber Lines (DSLs), comprising: calculating a power spectrum density of crosstalk to a line from adjacent lines, and determining a crosstalk function; calculating and determining a transmitting power spectrum density of a local device according to the calculated power spectrum density of the crosstalk and the crosstalk function; and controlling, by the local device, a transmitting power according to the transmitting power spectrum density, wherein the calculating and determining the transmitting power spectrum density of the local device comprises: calculating an attenuation function of the line, and calculating a value of the crosstalk function according to the attenuation function; and calculating the value of the transmitting power spectrum density according to the value of the power spectrum density and the value of the crosstalk function, and controlling the transmitting power according to the value of the transmitting power spectrum density; wherein the value of the power spectrum density is calculated according to a ground noise value and an additional white Gaussian noise value; wherein the value of the power spectrum density X SNR(f) being a ground noise; n(f) being an additional white Gaussian noise.