A system is provided to automatically estimate performance of a receiver
for receiving input signals, the input signals having a carrier frequency
and a baud rate, from a channel in a communication system and the effect
of highly correlated noise cancellation on performance of the receiver,
while no active transmission is occurring on the channel, comprising: a
digital front end in the receiver for receiving samples of the input
signals; a predictor coupled to the digital front end for predicting
highly correlated noise in a second sample of the input signal; and a
subtraction unit coupled to the predictor for subtracting the predictor
output from the second sample to determine residual noise in the second
sample. Other systems and methods are disclosed.