Patent ID: 8654874

Claim:
A method, comprising: receiving, at a receiver, a discrete multi-tone (DMT) symbol transmitted by a transmitter, wherein the received DMT symbol includes pilot tones and monitored tones, each pilot tone is generated at the transmitter according to a corresponding first sequence of signal points, each monitored tone is generated at the transmitter according to a corresponding second sequence of signal points, and at least one of the monitored tones is generated at the transmitter using a pseudo-random sequence; determining, at the receiver, received signal points based on the received DMT symbol; determining, at the receiver, actual transmitted signal points corresponding to the pilot tones in the received DMT symbol using a priori knowledge of the first sequences of signal points corresponding to the pilot tones; recreating, at the receiver and using a priori knowledge of the pseudo-random sequence, the pseudo-random sequence utilized at the transmitter to generate the at least one monitored tone; determining, at the receiver, actual transmitted signal points corresponding to the monitored tones in the received DMT symbol using a priori knowledge of the second sequences of signal points corresponding to the monitored tones, including using the recreated pseudo-random sequence; determining an error between the received signal points and the actual transmitted signal points determined at the receiver; and generating an indicator of impulse noise based on the error.