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Michael Black
OpenXG UE
Commits
02c36d47
Commit
02c36d47
authored
Sep 09, 2018
by
Raymond Knopp
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Plain Diff
removed some computations which are repeated in a loop (updateLLR)
parent
1d45fc7f
Changes
2
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Showing
2 changed files
with
25 additions
and
20 deletions
+25
-20
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c
+2
-1
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoding_tools.c
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoding_tools.c
+23
-19
No files found.
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c
View file @
02c36d47
...
...
@@ -105,8 +105,9 @@ int8_t polar_decoder(
int16_t
checkCrcBits
=-
1
;
uint8_t
listIndex
[
2
*
listSize
],
copyIndex
;
// for (uint8_t i = 0; i < 2*listSize; i++) listIndex[i]=i;
for
(
uint16_t
currentBit
=
0
;
currentBit
<
polarParams
->
N
;
currentBit
++
){
printf
(
"***************** BIT %d
\n
"
,
currentBit
);
//
printf("***************** BIT %d\n",currentBit);
updateLLR
(
llr
,
llrUpdated
,
bit
,
bitUpdated
,
currentListSize
,
currentBit
,
0
,
polarParams
->
N
,
(
polarParams
->
n
+
1
),
pathMetricAppr
);
if
(
polarParams
->
information_bit_pattern
[
currentBit
]
==
0
)
{
//Frozen bit.
...
...
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoding_tools.c
View file @
02c36d47
...
...
@@ -20,29 +20,33 @@
*/
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
#define SHOWCOMP 1
//
#define SHOWCOMP 1
void
updateLLR
(
double
***
llr
,
uint8_t
**
llrU
,
uint8_t
***
bit
,
uint8_t
**
bitU
,
uint8_t
listSize
,
uint16_t
row
,
uint16_t
col
,
uint16_t
xlen
,
uint8_t
ylen
,
uint8_t
approximation
)
{
uint16_t
offset
=
(
xlen
/
(
pow
(
2
,(
ylen
-
col
-
1
))));
for
(
uint8_t
i
=
0
;
i
<
listSize
;
i
++
)
{
if
((
(
row
)
%
(
2
*
offset
)
)
>=
offset
)
{
if
(
bitU
[
row
-
offset
][
col
]
==
0
)
updateBit
(
bit
,
bitU
,
listSize
,
(
row
-
offset
),
col
,
xlen
,
ylen
);
if
(
llrU
[
row
-
offset
][
col
+
1
]
==
0
)
updateLLR
(
llr
,
llrU
,
bit
,
bitU
,
listSize
,
(
row
-
offset
),
(
col
+
1
),
xlen
,
ylen
,
approximation
);
if
(
llrU
[
row
][
col
+
1
]
==
0
)
updateLLR
(
llr
,
llrU
,
bit
,
bitU
,
listSize
,
row
,
(
col
+
1
),
xlen
,
ylen
,
approximation
);
uint8_t
listSize
,
uint16_t
row
,
uint16_t
col
,
uint16_t
xlen
,
uint8_t
ylen
,
uint8_t
approximation
)
{
uint16_t
offset
=
(
xlen
/
(
1
<<
(
ylen
-
col
-
1
)));
if
((
(
row
)
%
(
2
*
offset
)
)
>=
offset
)
{
if
(
bitU
[
row
-
offset
][
col
]
==
0
)
updateBit
(
bit
,
bitU
,
listSize
,
(
row
-
offset
),
col
,
xlen
,
ylen
);
if
(
llrU
[
row
-
offset
][
col
+
1
]
==
0
)
updateLLR
(
llr
,
llrU
,
bit
,
bitU
,
listSize
,
(
row
-
offset
),
(
col
+
1
),
xlen
,
ylen
,
approximation
);
if
(
llrU
[
row
][
col
+
1
]
==
0
)
updateLLR
(
llr
,
llrU
,
bit
,
bitU
,
listSize
,
row
,
(
col
+
1
),
xlen
,
ylen
,
approximation
);
for
(
uint8_t
i
=
0
;
i
<
listSize
;
i
++
)
{
#ifdef SHOWCOMP
printf
(
"updating LLR (%d,%d,%d) (bit %d,%d,%d, llr0 %d,%d,%d, llr1 %d,%d,%d
\n
"
,
row
,
col
,
i
,
row
-
offset
,
col
,
i
,
row
-
offset
,
col
+
1
,
i
,
row
,
col
+
1
,
i
);
printf
(
"updating LLR (%d,%d,%d) (bit %d,%d,%d, llr0 %d,%d,%d, llr1 %d,%d,%d
\n
"
,
row
,
col
,
i
,
row
-
offset
,
col
,
i
,
row
-
offset
,
col
+
1
,
i
,
row
,
col
+
1
,
i
);
#endif
llr
[
row
][
col
][
i
]
=
(
pow
((
-
1
),
bit
[
row
-
offset
][
col
][
i
])
*
llr
[
row
-
offset
][
col
+
1
][
i
])
+
llr
[
row
][
col
+
1
][
i
];
}
else
{
if
(
llrU
[
row
][
col
+
1
]
==
0
)
updateLLR
(
llr
,
llrU
,
bit
,
bitU
,
listSize
,
row
,
(
col
+
1
),
xlen
,
ylen
,
approximation
);
if
(
llrU
[
row
+
offset
][
col
+
1
]
==
0
)
updateLLR
(
llr
,
llrU
,
bit
,
bitU
,
listSize
,
(
row
+
offset
),
(
col
+
1
),
xlen
,
ylen
,
approximation
);
computeLLR
(
llr
,
row
,
col
,
i
,
offset
,
approximation
);
}
}
llrU
[
row
][
col
]
=
1
;
llr
[
row
][
col
][
i
]
=
(
pow
((
-
1
),
bit
[
row
-
offset
][
col
][
i
])
*
llr
[
row
-
offset
][
col
+
1
][
i
])
+
llr
[
row
][
col
+
1
][
i
];
}
}
else
{
if
(
llrU
[
row
][
col
+
1
]
==
0
)
updateLLR
(
llr
,
llrU
,
bit
,
bitU
,
listSize
,
row
,
(
col
+
1
),
xlen
,
ylen
,
approximation
);
if
(
llrU
[
row
+
offset
][
col
+
1
]
==
0
)
updateLLR
(
llr
,
llrU
,
bit
,
bitU
,
listSize
,
(
row
+
offset
),
(
col
+
1
),
xlen
,
ylen
,
approximation
);
for
(
uint8_t
i
=
0
;
i
<
listSize
;
i
++
)
{
computeLLR
(
llr
,
row
,
col
,
i
,
offset
,
approximation
);
}
}
llrU
[
row
][
col
]
=
1
;
}
void
updateBit
(
uint8_t
***
bit
,
uint8_t
**
bitU
,
uint8_t
listSize
,
uint16_t
row
,
...
...
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