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Jordan Sherer
2018-02-08 21:28:33 -05:00
commit 678c1d3966
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lib/ldpc/ex-dep-out
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# CODE 1
make-pchk ex-dep.pchk 4 6 0:0 0:5 3:1 3:2
print-pchk -d ex-dep.pchk
Parity check matrix in ex-dep.pchk (dense format):
1 0 0 0 0 1
0 0 0 0 0 0
0 0 0 0 0 0
0 1 1 0 0 0
echo 00011011 >ex-dep.src
# SPARSE REPRESENTATION
make-gen ex-dep.pchk ex-dep.gen sparse
Note: Parity check matrix has 2 redundant checks
Number of 1s per check in L is 0.8, U is 0.5, B is 0.2, total is 1.5
print-gen -d ex-dep.gen
Generator matrix in ex-dep.gen (sparse representation):
Column order (message bits at end):
5 2 1 3 4 0
Row order:
0 3 2 1
L:
1 0 0 0
0 0 0 0
0 0 0 0
0 1 0 0
U:
0 0 0 0 0 1
0 1 1 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
encode ex-dep.pchk ex-dep.gen ex-dep.src ex-dep.enc; cat ex-dep.enc
Encoded 4 blocks, source block size 2, encoded block size 6
000000
100001
000010
100011
verify ex-dep.pchk ex-dep.enc ex-dep.gen ex-dep.src
Block counts: tot 4, with chk errs 0, with src errs 0, both 0
Bit error rate (on message bits only): 0.000e+00
# DENSE REPRESENTATION
make-gen ex-dep.pchk ex-dep.gen dense
Note: Parity check matrix has 2 redundant checks
Number of 1s per check in Inv(A) X B is 0.2
print-gen -d ex-dep.gen
Generator matrix in ex-dep.gen (dense representation):
Column order (message bits at end):
0 1 2 3 4 5
Inv(A) X B:
0 1
0 0
0 0
0 0
encode ex-dep.pchk ex-dep.gen ex-dep.src ex-dep.enc; cat ex-dep.enc
Encoded 4 blocks, source block size 2, encoded block size 6
000000
100001
000010
100011
verify ex-dep.pchk ex-dep.enc ex-dep.gen ex-dep.src
Block counts: tot 4, with chk errs 0, with src errs 0, both 0
Bit error rate (on message bits only): 0.000e+00
# MIXED REPRESENTATION
make-gen ex-dep.pchk ex-dep.gen mixed
Note: Parity check matrix has 2 redundant checks
Number of 1s per check in Inv(A) is 0.5, in B is 0.2, total is 0.8
print-gen -d ex-dep.gen
Generator matrix in ex-dep.gen (mixed representation):
Column order (message bits at end):
0 1 2 3 4 5
Inv(A):
1 0 0 0
0 0 0 1
0 0 0 0
0 0 0 0
encode ex-dep.pchk ex-dep.gen ex-dep.src ex-dep.enc; cat ex-dep.enc
Encoded 4 blocks, source block size 2, encoded block size 6
000000
100001
000010
100011
verify ex-dep.pchk ex-dep.enc ex-dep.gen ex-dep.src
Block counts: tot 4, with chk errs 0, with src errs 0, both 0
Bit error rate (on message bits only): 0.000e+00
# CODE 2
make-pchk ex-dep.pchk 4 5 0:0 0:1 1:1 1:2 2:0 2:2 3:3 3:4
print-pchk -d ex-dep.pchk
Parity check matrix in ex-dep.pchk (dense format):
1 1 0 0 0
0 1 1 0 0
1 0 1 0 0
0 0 0 1 1
echo 01 >ex-dep.src
# SPARSE REPRESENTATION
make-gen ex-dep.pchk ex-dep.gen sparse
Note: Parity check matrix has 1 redundant checks
Number of 1s per check in L is 1.0, U is 1.2, B is 0.5, total is 2.8
print-gen -d ex-dep.gen
Generator matrix in ex-dep.gen (sparse representation):
Column order (message bits at end):
4 1 2 3 0
Row order:
3 0 1 2
L:
0 1 0 0
0 1 1 0
0 0 1 0
1 0 0 0
U:
0 0 0 1 1
0 1 0 0 0
0 0 1 0 0
0 0 0 0 0
encode ex-dep.pchk ex-dep.gen ex-dep.src ex-dep.enc; cat ex-dep.enc
Encoded 2 blocks, source block size 1, encoded block size 5
00000
11100
verify ex-dep.pchk ex-dep.enc ex-dep.gen ex-dep.src
Block counts: tot 2, with chk errs 0, with src errs 0, both 0
Bit error rate (on message bits only): 0.000e+00
# DENSE REPRESENTATION
make-gen ex-dep.pchk ex-dep.gen dense
Note: Parity check matrix has 1 redundant checks
Number of 1s per check in Inv(A) X B is 0.2
print-gen -d ex-dep.gen
Generator matrix in ex-dep.gen (dense representation):
Column order (message bits at end):
0 1 3 2 4
Inv(A) X B:
0
0
1
0
encode ex-dep.pchk ex-dep.gen ex-dep.src ex-dep.enc; cat ex-dep.enc
Encoded 2 blocks, source block size 1, encoded block size 5
00000
00011
verify ex-dep.pchk ex-dep.enc ex-dep.gen ex-dep.src
Block counts: tot 2, with chk errs 0, with src errs 0, both 0
Bit error rate (on message bits only): 0.000e+00
# MIXED REPRESENTATION
make-gen ex-dep.pchk ex-dep.gen mixed
Note: Parity check matrix has 1 redundant checks
Number of 1s per check in Inv(A) is 1.0, in B is 0.2, total is 1.2
print-gen -d ex-dep.gen
Generator matrix in ex-dep.gen (mixed representation):
Column order (message bits at end):
0 1 3 2 4
Inv(A):
1 1 0 0
0 1 0 0
0 0 0 1
0 0 0 0
encode ex-dep.pchk ex-dep.gen ex-dep.src ex-dep.enc; cat ex-dep.enc
Encoded 2 blocks, source block size 1, encoded block size 5
00000
00011
verify ex-dep.pchk ex-dep.enc ex-dep.gen ex-dep.src
Block counts: tot 2, with chk errs 0, with src errs 0, both 0
Bit error rate (on message bits only): 0.000e+00