Patent ID: 7656940
Filing Date: 2010-02-02
Classification: H04L

Abstract:
1. An equalizer receiving a digitally modulated single-carrier signal and performing equalization using frequency domain signal processing, wherein the equalizer comprises: a filtering part accepting a received signal sampled using a predetermined number of over-samples as input and performing filtering by converting the received signal to an over-sample number small enough to avoid foldover noise generation in the frequency domain; a transmission channel estimation part converting the received signal to an over-sample number large enough to obtain sufficient timing resolution, performing path timing detection using the timing resolution, converting the transmission channel responses corresponding to path timings to the frequency domain, and calculating transmission channel estimates corresponding to subcarriers of the received signal in the frequency domain; and a weight calculation part, which calculates weights of an equalizing filter used in the filtering part based on an output of the transmission channel estimation part.