Patent ID: 7218673
Filing Date: 2007-05-15
Classification: H04L

Abstract:
1. A channel equalizer of a single carrier receiver receiving an input signal, comprising: a feed-forward filter removing a pre-ghost of respective symbols of the input signal; a feedback filter removing a post-ghost of the respective symbols of the input signal; an adder combining the pre-ghost removed symbol with the post-ghost removed symbol; a level decision unit determining a level of the symbols added at the adder with reference to predetermined level data, and feeding back the determined level to the feedback filter; a trellis decoder performing trellis decoding with respect to a sum of the symbols obtained at the adder; an error calculator calculating an error value between the symbols obtained at the adder and the level determined at the level decision unit; and a trellis control unit controlling the trellis decoder so that a plurality of decoded symbols output from the trellis decoder are input to the feedback filter based on the error value obtained at the error calculator.