Method and apparatus for decoding the output signal of a partial

Pulse or digital communications – Repeaters – Testing

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375102, 340347DD, H04L 300

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active

045717346

ABSTRACT:
A maximum-likelihood sequence decoder is used with a partial-response signaling system for processing sequences of sampled values from a communication channel or recording device. The partial-response signals can be duobinary, dicode, or partial-response class-IV. The maximum-likelihood decoding for each sequence can be based upon a two-state trellis. Instead of two survivor metrics for two states, only a difference metric is necessary.

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H. Kobayashi, "Application of Probabilistic Decoding to Digital Magnetic Recording Systems", IBM Journal of Research and Development, vol. 15, No. 1, Jan. 1971, pp. 64-74.

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