Patent ID: 8155180

Claim:
A method of compensating for loss in a transmitted data signal at a receiver, the method comprising: measuring amplitude of each of a plurality of transmitted test signals having respective different frequencies; storing, for each of the plurality of transmitted test signals, a value associated with the test signal frequency indicative of a predetermined threshold and whether the measured amplitude of the test signal is less than the predetermined threshold, wherein unacceptable loss is identified based on the measured amplitude of the test signal; analyzing the value stored for each of the plurality of transmitted test signals to identify a frequency corresponding to the test signal value where the predetermined threshold indicated by the test signal value is smaller than the predetermined threshold indicated by another test signal value; and when the frequency is identified: generating a transfer function based on the value stored for each of the plurality of test signals; and determining compensation for the receiver based on the generated transfer function that would have at least partly reduced the unacceptable loss.