| 摘要 |
For a waveform containing a partial response and distortion in only the leading-edge portion of inter-symbol interference (ISI) of a waveform equalized by a prior-stage feedforward filter (FFF) so as to satisfy causality, equalization that does not consider postcursor ISI subsequent to the partial response is performed; a feedback filter (FBF) uses a determination result of a decoding device to generate a response for the distortion of the partial response portion and the postcursor ISI; and the result is subtracted from an FFF output delayed by the amount of determination delay to create a desired partial response waveform. As a method for equalization that satisfies causality, a least mean square algorithm is applied to the partial response waveform generated as described above.
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