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#!/bin/bash
# jt65 end-to-end simulator. Run enough cases to get a given
# number of successful decodes or a given number of errors
# For better performance, copy this script and jt65, jt65sim
# executables to a ramdisk and run from there.
mode=C
spread=4.0
for i in `seq 0 21`;
do
nruns=0
ndecodes=0
ngood=0
nbad=0
snr=$((-25+$i))
#while [ $[ $nruns - $ngood ] -lt 200 ]
#while [ $ngood -lt 200 ]
while [ $nruns -lt 1000 ]
do
rm 000000_0001.wav
./jt65sim -m $mode -n 1 -d $spread -s \\$snr > /dev/null
rm decoded.txt
./jt65 -m $mode -a 10 -f 1500 -n 1000 -s 000000_0001.wav > decoded.txt
if [ -e decoded.txt ]; then
nd=$( wc -l < decoded.txt )
ng=$( grep "K1ABC" decoded.txt | wc -l )
nb=$[$nd-$ng]
ndecodes=$[$ndecodes + $nd]
ngood=$[$ngood + $ng]
nbad=$[$nbad + $nb]
fi
nruns=$[$nruns + 1]
nmissed=$[$nruns-$ngood]
pe=$( echo "scale=5; $nmissed/$nruns" | bc -l )
ps=$( echo "scale=5; $ngood/$nruns" | bc -l )
echo -en snr: $snr nruns: $nruns ndecodes: $ndecodes ngood: $ngood nbad: $nbad nmissed: $nmissed wer: $pe success: $ps"\r"
done
echo snr: $snr nruns: $nruns ndecodes: $ndecodes ngood: $ngood nbad: $nbad nmissed: $nmissed wer: $pe success: $ps
done
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