Patent ID: 7124042

Claim:
A method for determining one or more signal parameters for a plurality of tones in an input signal, the method comprising: a) receiving samples of the input signal, wherein the input signal includes a plurality of tones; b) generating a frequency transform of the samples, wherein the frequency transform comprises frequency response data for the plurality of tones; c) determining one or more signal parameter estimates characterizing each of the plurality of tones; d) for each respective tone of the plurality of tones, generating modified frequency response data for the respective tone using one or more signal parameter estimates of one or more of the other tones, wherein the modified frequency response data for the respective tone includes reduced effects of other tones of the plurality of tones; wherein step d) is performed in an iterative fashion; and e) determining final one or more signal parameter estimates for each of the plurality of tones based on the modified frequency response data of the plurality of tones.