Patent ID: 7190717

Claim:
A method of reordering tones in a communication system, said method comprising: receiving a signal at a receiver from a transmitter, wherein the signal comprising a first plurality of tones in a first order; determining a second plurality of tones from the first plurality of tones, the second plurality of tones having correlated noise; determining a second order of tones for the first plurality of tones by interleaving, in a block interleaver of depth floor(√{square root over (P)}), the first plurality of tones when the number of tones in the first plurality of tones exceed a predetermined number of tones, wherein P is number of tones in the first plurality of tones such that each one of the second plurality of tones in the second order is at least two tones apart from each other; communicating the second order of tones to the transmitter; and transmitting and receiving signals with tones in the second order.