tree fe06a074f0a7651e20fdb6c5f62012cb0b77ed64
parent f1d33447814391967186222b64780a4abd150453
author Sylvain Munaut <tnt@246tNt.com> 1303567759 +0200
committer Harald Welte <laforge@gnumonks.org> 1303821649 +0200

core/conv: Add some generic code for convolutional coding/decoding

Far from perfect but suits our need thus far.

The viterbi with softbit input is quite cpu-intensive. Since
most received bursts are often mostly error free, you could
use a less cpu intensive algorithm (Fano ?) and with hard bit
input. Then only switch to viterbi soft bit input if the channel
is bad enough to justify it.

Soft output is not implemented as its usefulness for the block
coding is limited.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>