Add (128,82) ldpc code.

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6494 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

lib/ldpc/jtmode_codes/ldpc-search

@@ -4,13 +4,13 @@
 n=128
 k=80
 m=$((n-k))
-niterations=5
+niterations=10
 
 set -e  # Stop if an error occurs
 
 rand-src  ldpc.src 2 "$k"x100000
 
-for i in `seq 1000 2000`
+for i in `seq 1 1000`
 do
   seed=$i
   echo seed $seed

lib/ldpc/jtmode_codes/ldpc-waterfall

@@ -10,16 +10,16 @@ set -e  # Stop if an error occurs
 #set -v  # Echo commands as they are read
 
 n=128
-k=82
+k=80
 m=$((n-k))
-seed=182
-ntrials=10000
+seed=873
+ntrials=1000000
 niterations=10
 
 rate=$(echo "scale=5; $k/$n" | bc)
 echo n=$n k=$k rate=$rate m=$m
 
-make-ldpc ldpc.pchk "$m" "$n" $seed evenboth 9x3/1x4 no4cycle
+make-ldpc ldpc.pchk "$m" "$n" $seed evenboth 120x3/8x4 no4cycle
 
 make-gen  ldpc.pchk ldpc.gen sparse
 rand-src  ldpc.src 1 "$k"x"$ntrials"