| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an apparatus and method of adaptively generating an optimal reference level of a Viterbi decoder for an input signal. Ž<P>SOLUTION: The present invention relates to an apparatus and method of adaptively generating an optimal reference level of a viterbi decoder for an input signal, the apparatus including: a first reference level detection unit detecting a first reference level of a Viterbi decoder using a first delayed input signal with respect to an input signal of the Viterbi decoder and an output signal of the Viterbi decoder; a second reference level detection unit detecting a second reference level of the Viterbi decoder using second and third delayed input signals inputted after and before one clock cycle with respect to the first delayed input signal and the output signal of the Viterbi decoder; and a control unit controlling one of the first reference level and the second reference level to be set as the reference level of the Viterbi decoder by using a result of comparison between a first square level error for the first reference level calculated in the first reference level detection unit and a second square level error for the second reference level calculated in the second reference level detection unit. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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