Patent ID: 7020212
Filing Date: 2006-03-28
Classification: H04L

Abstract:
1. A method of increasing a signal-to-noise ratio for at least one carrier in a multicarrier transceiver comprising the steps of: receiving and storing at least one decoder error for the at least one carrier; determining at least one two-dimensional adaptive filter tap for each of the at least one carrier in accordance with the at least one detector error; determining a noise estimate relating to the at least one decoder error and the at least one two-dimensional adaptive filter tap; receiving an equalizer output; and determining a signal having increased signal-to-noise ratio in response to the noise estimate and the equalizer output; wherein the step of determining at least one adaptive filter tap comprises the minimization of the mean squared error and wherein the minimization of the mean squared error is performed in accordance with the relation: where x(i,j) is a known copy of the transmitted data for the j th bin and the i th symbol, f(i,j) is the FEQ coefficient, y(i,j) is the FFT output, and is the impulse response filtering of the uncanceled decoder error vector (i,j) with filter coefficient vector .