Patent ID: 6781965
Filing Date: 2004-08-24
Classification: H04B,H04L

Abstract:
A method of canceling echo in a multicartier transceiver system including a multicarrier transmitter that transmits signals and a multicarrier receiver that receives signals, the method comprising:separating a first residual time domain echo component en, from a combined first time domain receive signal rn and the first residual time domain echo component en; separating a second residual time domain echo component en+1, from a combined second time domain receive signal rn+1 and the second residual time domain echo component en+1; and combining the first residual time domain echo component en with the second residual time domain echo component en+1 to obtain a combined residual time domain echo component for adaptively updating a transfer function; wherein the second time domain receive signal rn+1 includes a guard band, the step of combining the first residual time domain echo component en with the second, residual time domain echo component en+1 further comprising: adding a replacement component to the residual time domain echo component eâ€² for samples lost due to the guard band.