Abstract: A MCM (multi-carrier modulation) receiver that utilizes a plurality tones to transmit information. Identify a first subset of tones that have negligible ISI (inter-symbol interference) and ICI (inter-carrier interference), and a second subset of tones that ISI/ICI cancellation is needed to improve the performance. For tones in the first subset, conventional FEQ (frequency-domain equalization) is performed to obtained soft decisions from the raw decisions. For those tones in the second subset, perform FEQ along with ICI/ISI cancellation. For tones in the second subset, identify a third subset (one for each of the tones in the second subset) to perform ICI cancellation and a series of fourth subsets (one for each of the tones in the second subset) to perform ISI cancellation.

Abstract: A MCM (multi-carrier modulation) receiver that utilizes a plurality tones to transmit information. Identify a first subset of tones that have negligible ISI (inter-symbol interference) and ICI (inter-carrier interference), and a second subset of tones that ISI/ICI cancellation is needed to improve the performance. For tones in the first subset, conventional FEQ (frequency-domain equalization) is performed to obtained soft decisions from the raw decisions. For those tones in the second subset, perform FEQ along with ICI/ISI cancellation. For tones in the second subset, identify a third subset (one for each of the tones in the second subset) to perform ICI cancellation and a series of fourth subsets (one for each of the tones in the second subset) to perform ISI cancellation.

Abstract: A multi-carrier communication system is disclosed. The multi-carrier communication system includes a transmitting module for generating a first time-domain signal by performing an inversed Fourier transform upon a transmitting data; a receiving module for receiving a second time-domain signal and for generating a decoded data by performing a Fourier transform upon the second time-domain signal; and an echo cancellation unit, coupled to the transmitting module and the receiving module, for generating a reconstructed data according to a plurality of computing coefficients, the decoded data, and the transmit data, and for adjusting the computing coefficients according to the reconstructed data.