| 摘要 |
A Decision Feedback Sequence Estimator (DFSE) metric is determined by storin g one or more tables of Decision Feedback Estimation (DFE) hypotheses in a memory, and then using values of the DFE hypotheses that are retrieved from storage to determine the DFSE metric. The DFE hypotheses may be precalculated and stored into the memory prior to performance of any retrieval operation. Alternatively, the table ma y start out empty, and the DFE hypotheses may be determined as needed for a particular DFSE metric computation. The determined DFE metric may then be stored into a tabl e for later retrieval if the metric is needed again. The DFE hypotheses may be stored in to a single table or, to reduce memory requirements and computational complexity, may be stored into corresponding ones of plural tables. MLSE hypotheses, which are also us ed in the DFSE metric determination, may similarly be stored into one or more tables f or later retrieval as needed.
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