Patent ID: 7274745

Claim:
A channel equalizer for a single-carrier receiver, comprising: a first equalizer having a first feed forward (FF) unit to eliminate a pre-ghost of an input signal and a first feedback (FB) unit to eliminate a post-ghost of the input signal; a first error calculation unit to calculate a first equalization error value based on an added signal of an output signal of the first FF unit and an output signal of the first FB unit; a Trellis decoder for Trellis-decoding an output signal of the first equalizer; a second equalizer having a second FF unit to eliminate the pre-ghost of the input signal and a second FB unit to eliminate the post-ghost of the input signal based on an output signal of the Trellis decoder; and a Trellis controller to control the Trellis decoder to output to the first FB unit an estimation signal outputted in a predetermined decoding depth state of the Trellis decoder if the first equalization error value becomes less than or equal to a threshold value.