Patent ID: 7433398

Claim:
An equalization method for communication having frequency division multiplexing using a plurality of frequency subbands, the method comprising: (a) performing time domain equalization on a received digital signal using a first plurality of coefficients to form a time domain equalized signal in a T-tap filter, where T is the number of short impulse response filter (SIRF) taps within the filter; (b) filtering the time domain equalized signal to remove a cyclic prefix; (c) converting the time domain equalized signal into a frequency domain signal; (d) separating the frequency domain signal into the plurality of frequency subbands; (e) performing frequency domain equalization on each frequency subband of the plurality of frequency subbands using a second plurality of coefficients, utilizing M one-tap filters, where M is the number of frequency subbands in the plurality of frequency sidebands, the second plurality of coefficients having one coefficient for each frequency subband of the plurality of frequency subbands; and (f) jointly determining in an integrated calculation the first plurality of coefficients and the second plurality of coefficients, the total unknown equalization variables being M+T.