convolutuion encoding and viterbi decoding
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Viterbi decoder V3.0.1
This package provides encoders and fast Viterbi decoders for the NASA
standard rate 1/2 and rate 1/3 constraint length 7 convolutional codes.
Two versions of these encoder and decoder are provided, one for
blocked data (with user specified initial and terminal encoder states)
and another for continuous streams. The former is a C subroutine, the
latter runs as a UNIX pipeline filter, closely emulating commercially
available hardware Viterbi decoders.