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snapshot of current ldpc-search and ldpc-waterfall scripts

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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6484 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Steven Franke 2016-02-23 02:35:57 +00:00
parent 621015db72
commit 03656e17e5
4 changed files with 35 additions and 30 deletions
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9
lib/ldpc/jtmode_codes/compare.lab
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@ -1,4 +1,5 @@
3.9 0.15 "(198,72) JTMSK"
2.7 0.003 "(174,87) LDPC"
5.6 0.00003 "(160,80) LDPC"
5.6 0.00008 "(140,80) LDPC"
5.7 0.0002 "CC/CRC15"
5.5 0.0001 "(128,82)"
5.7 0.0004 "(128,82)/20"
5.6 0.002 "(128,82)/5"
5.5 0.000007 "(160,80)"

18
lib/ldpc/jtmode_codes/fig_compare.gnuplot
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@ -13,15 +13,17 @@ set mytics 10
set grid
set logscale y
plot [-1:6] [1e-6:1] \
"jtmskcode.results" using 1:(100000-$2)/100000 with linespoints lt 1 lw 2 pt 1, \
"jtmskcode.results" using 1:($5/1000000) with linespoints lt 1 lw 2 pt 1, \
"160-80-sf4.results" using 1:(1000000-$2)/1000000 with linespoints lt 2 lw 2 pt 2, \
"160-80-sf4.results" using 1:($3/1000000) with linespoints lt 2 lw 2 pt 2, \
"jtmskcode.results" using 1:(100000-$2)/100000 with linespoints lt 1 lw 2 pt 7, \
"jtmskcode.results" using 1:($5/1000000) with linespoints lt 1 lw 2 pt 7, \
"140-80-sf5.results" using 1:(100000-$2)/100000 with linespoints lt 4 lw 2 pt 4, \
"140-80-sf5.results" using 1:($3/100000) with linespoints lt 4 lw 2 pt 4, \
"174-87-sf6.results" using 1:(1000000-$2)/1000000 with linespoints lt 5 lw 2 pt 5, \
"174-87-sf6.results" using 1:($3/1000000) with linespoints lt 5 lw 2 pt 5, \
"128-82-sf10.results" using 1:(1000000-$2)/1000000 with linespoints lt 3 lw 2 pt 3, \
"128-82-sf10.results" using 1:($3/1000000) with linespoints lt 3 lw 2 pt 3, \
"128-82-sf11.results" using 1:(1000000-$2)/1000000 with linespoints lt 4 lw 2 pt 4, \
"128-82-sf11.results" using 1:($3/1000000) with linespoints lt 4 lw 2 pt 4, \
"128-82-sf11.results" using 1:(1000000-$4)/1000000 with linespoints lt 4 lw 2 pt 4, \
"128-82-sf11.results" using 1:($5/1000000) with linespoints lt 4 lw 2 pt 4, \
"128-64.results" using 1:(1000000-$2)/1000000 with linespoints lt 5 lw 2 pt 5, \
"128-64.results" using 1:($3/1000000) with linespoints lt 5 lw 2 pt 5, \
"compare.lab" with labels
exit
# "160-80-sf4.results" using 1:(1000000-$4)/1000000 with linespoints lt 3 lw 2 pt 4, \
# "160-80-sf4.results" using 1:($5/1000000) with linespoints lt 2 lw 3 pt 4, \

16
lib/ldpc/jtmode_codes/ldpc-search
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@ -1,22 +1,24 @@
#!/bin/sh
# search for a good code
n=160
k=72
# make-ldpc ldpc.pchk $m $n $seed evenboth 2x3/8x4 no4cycle
n=128
k=80
m=$((n-k))
niterations=5
set -e # Stop if an error occurs
rand-src ldpc.src 2 "$k"x1000000
rand-src ldpc.src 2 "$k"x100000
for i in `seq 1 1000`
for i in `seq 1000 2000`
do
seed=$i
echo seed $seed
make-ldpc ldpc.pchk $m $n $seed evenboth 2x3/8x4 no4cycle
make-ldpc ldpc.pchk $m $n $seed evenboth 120x3/8x4 no4cycle
make-gen ldpc.pchk ldpc.gen dense
encode ldpc.pchk ldpc.gen ldpc.src ldpc.enc
transmit ldpc.enc ldpc.rec 1 awgn 0.8
decode ldpc.pchk ldpc.rec ldpc.dec awgn 0.80 prprp 250
transmit ldpc.enc ldpc.rec 1 awgn 0.7
decode ldpc.pchk ldpc.rec ldpc.dec awgn 0.70 prprp $niterations
verify ldpc.pchk ldpc.dec ldpc.gen ldpc.src
done

22
lib/ldpc/jtmode_codes/ldpc-waterfall
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@ -1,24 +1,27 @@
#!/bin/sh
# this script characterizes a single code over a range of Eb/N0
# a baseband signal with mean power = 1
# note relationship between noise standard deviation, sigma, and Eb/No:
# Eb/No = 1/(2*R*sigma^2)
# If R=1/2, then Eb/No = 1/sigma^2
# make-ldpc ldpc.pchk "$m" "$n" $seed evenboth 2x3/8x4 no4cycle
set -e # Stop if an error occurs
#set -v # Echo commands as they are read
n=174
k=87
n=128
k=82
m=$((n-k))
seed=4
ntrials=1000000
seed=182
ntrials=10000
niterations=10
rate=$(echo "scale=5; $k/$n" | bc)
echo n=$n k=$k rate=$rate m=$m
make-ldpc ldpc.pchk "$m" "$n" $seed evenboth 2x3/8x4 no4cycle
make-ldpc ldpc.pchk "$m" "$n" $seed evenboth 9x3/1x4 no4cycle
make-gen ldpc.pchk ldpc.gen dense
make-gen ldpc.pchk ldpc.gen sparse
rand-src ldpc.src 1 "$k"x"$ntrials"
encode ldpc.pchk ldpc.gen ldpc.src ldpc.enc
@ -30,9 +33,6 @@ do
echo db $db ebno $ebno sigma $sigma
transmit ldpc.enc ldpc.rec 1 awgn $sigma
decode ldpc.pchk ldpc.rec ldpc.dec awgn $sigma\
prprp 250
verify ldpc.pchk ldpc.dec ldpc.gen \
ldpc.src
decode ldpc.pchk ldpc.rec ldpc.dec awgn $sigma prprp $niterations
verify ldpc.pchk ldpc.dec ldpc.gen ldpc.src
done