ACS APPARATUS AND METHOD FOR VITERBI DECODER

申请公布号：WO2004098068(A1)

申请号：WO2004GB01770

申请日期：2004.04.27

申请公布日期：2004.11.11

申请人：

CARAMMA, MARCELLO;ANALOG DEVICES BV

发明人：CARAMMA, MARCELLO

分类号：H03M13/41;(IPC1-7):H03M13/41

主分类号：H03M13/41

摘要：<p>The circuit (10) performs a butterfly calculation for a Viterbi trellis by using two path metrics and a branch metric to generate two new path metrics. The new metrics are produced by adders (12) and (14) whose inputs are controlled by selectors (16-22). The outputs of the selectors (16-22) are controlled by selection control unit (24) which considers the difference between the given path metrics relative to the double of the branch metric, which represents a branch metric difference.</p>

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