Patent ID: 6631494
Filing Date: 2003-10-07
Classification: H03M

Abstract:
An iterative detector comprising:an ISI decoder to receive an input waveform comprising an input sequence of symbols and to output an intermediate waveform, said ISI decoder comprising a branch metric generation mechanism and a cost function update mechanism; a code decoder to receive said intermediate waveform via a permutation path, to output an output waveform with the effects of ISI mitigated, and to output new information concerning said input waveform with less influence of the effects of ISI; said cost function update mechanism being adapted to receive branch metric information from said branch metric mechanism and to receive said new information via a repermutation path; and a substitute mechanism to substitute said branch metric information received by said cost function update mechanism with substitute information independent of said branch metric information when a given group of symbols of the input waveform is subject to a burst error.