Viterbi decoder with detection of synchronous or asynchronous st

Details Viterbi decoder with detection of synchronous or asynchronous st Viterbi decoder with detection of synchronous or asynchronous st

1987-02-18

1989-01-31

Atkinson, Charles E.

Excavating

G06F 1110

Patent

active

048021741

ABSTRACT:
The invention relates to a Viterbi decoder for decoding a convolutional code. Branch metrics are normalized, state metrics are calculated from the normalized branch metrics, and the synchronization and asynchronization are determined on the basis of the degree of increase in the calculated state metrics. Thus, the original data can be certainly decoded by a simple hardware without being influenced by the S/N ratio of the communication path.

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patent: 4675871 (1987-06-01), Gordon et al.
Cain, et al., A VLSI R=1/2, K=7 Viterbi Decoder, IEEE 1984 National Aerospace and Electronics Conference, May 1984, pp. 20-27.

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