Patent ID: 8208588

Claim:
A single-carrier/multi-carrier community receiver, comprising: a discrete Fourier transform unit, for executing a discrete Fourier transform upon a received signal to generate a frequency-domain signal; a frequency-domain equalizer, coupled to the discrete Fourier transform unit, for executing an equalization operation upon the frequency-domain signal to generate a frequency-domain equalized signal; an inverse discrete Fourier transform unit, coupled to the frequency-domain equalizer, for executing an inverse discrete Fourier transform upon the frequency-domain equalized signal to generate a time-domain equalized signal; and an inter-symbol interference (ISI) cancellation unit, coupled to the inverse discrete Fourier transform unit, for executing an ISI cancellation operation upon the time-domain equalized signal to generate an ISI-cancelled signal, wherein the ISI cancellation unit comprises: a first data slicer, for slicing the time-domain equalized signal to generate a sliced time-domain signal; a first adder, for calculating a difference between the time-domain equalized signal and the sliced time-domain signal; a first digital filter, for generating a first filtered signal according to a plurality of differences generated from the first adder at different time points: and a second adder, for calculating a difference between the time-domain equalized signal and the first filtered signal to generate a preliminary ISI-cancelled signal which corresponds to the ISI-cancelled signal.