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    • 4. 发明授权
    • Modified branch metric for decoders and equalizers
    • 解码器和均衡器的修改分支度量
    • US07986753B1
    • 2011-07-26
    • US11901069
    • 2007-09-14
    • Pulakesh RoyKeang-Po Ho
    • Pulakesh RoyKeang-Po Ho
    • H04L27/06
    • H04L25/03197H03M13/4107H03M13/6536H03M13/6544H04L1/0054H04L2025/03426
    • A modified branch metric for decoders and equalizers is described. In one embodiment the branch metric includes determining a set of branch metric values for symbols of a received digital signal, the branch metric values indicating a correlation between symbols obtained using a reduced calculation set, the reduced calculation set being obtained by adding a common term to all of the branch metric values before determining the correlation. The branch metric may be followed by determining path metrics for paths through a decision tree using the branch metric values, and selecting a path and a corresponding symbol sequence in the received digital signal using the path metric values.
    • 描述了用于解码器和均衡器的修改的分支度量。 在一个实施例中,分支度量包括确定用于接收的数字信号的符号的分支度量值集合,所述分支度量值指示使用减少的计算集合获得的符号之间的相关性,所述减少的计算集合是通过将公共项添加到 确定相关性之前的所有分支度量值。 分支度量之后可以通过使用分支度量值确定通过决策树的路径的路径度量,并且使用路径量度值来选择接收的数字信号中的路径和对应的符号序列。