Patent ID: 7436881

Claim:
A multi-carrier data transmission receiver comprising: a subchannel demodulator arranged to demodulate one of a plurality of subchannels in a multi-carrier modulated data transmission system; a subchannel equalizer coupled to the subchannel demodulator and comprising a cascade of a feed-forward finite impulse response (FIR) filter with a feed-back finite impulse response (FIR) filter, the feed-back FIR filter receiving and processing a currently decided symbol in the subchannel; a second subchannel demodulator arranged to demodulate a second one of the plurality of subchannels in a multi-carrier modulated data transmission system; a second subchannel equalizer coupled to the second subchannel demodulator and comprising a cascade of a feed-forward finite impulse response (FIR) filter with a feed-back finite impulse response (FIR) filter, the feed-back FIR filter receiving and processing a currently decided symbol in the subchannel; at least two pulse amplitude modulation (PAM) slicers; a real extractor; and an imaginary extractor; wherein the real and imaginary extractors receive data from the feed-forward finite impulse response (FIR) filter and output data to the PAM slicers; and wherein data from the PAM slicers is provided to the feed-back finite impulse response (FIR) filter.