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Michael Black
OpenXG UE
Commits
f4156d2c
Commit
f4156d2c
authored
Oct 13, 2018
by
Raymond Knopp
Browse files
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Plain Diff
16-bit llr decoder integrated
parent
92336bc7
Changes
4
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4 changed files
with
44 additions
and
20 deletions
+44
-20
openair1/PHY/CODING/TESTBENCH/polartest.c
openair1/PHY/CODING/TESTBENCH/polartest.c
+25
-14
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c
+3
-3
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoding_tools.c
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoding_tools.c
+13
-3
openair1/PHY/CODING/nr_polar_init.c
openair1/PHY/CODING/nr_polar_init.c
+3
-0
No files found.
openair1/PHY/CODING/TESTBENCH/polartest.c
View file @
f4156d2c
...
...
@@ -151,7 +151,9 @@ int main(int argc, char *argv[]) {
uint8_t
*
encoderOutputByte
=
malloc
(
sizeof
(
uint8_t
)
*
coderLength
);
double
*
modulatedInput
=
malloc
(
sizeof
(
double
)
*
coderLength
);
//channel input
double
*
channelOutput
=
malloc
(
sizeof
(
double
)
*
coderLength
);
//add noise
int16_t
*
channelOutput_int16
;
if
(
decoder_int16
==
1
)
channelOutput_int16
=
(
int16_t
*
)
malloc
(
sizeof
(
int16_t
)
*
coderLength
);
t_nrPolar_paramsPtr
nrPolar_params
=
NULL
,
currentPtr
=
NULL
;
nr_polar_init
(
&
nrPolar_params
,
polarMessageType
,
testLength
,
aggregation_level
);
currentPtr
=
nr_polar_params
(
nrPolar_params
,
polarMessageType
,
testLength
,
aggregation_level
);
...
...
@@ -323,13 +325,6 @@ int main(int argc, char *argv[]) {
/*printf("encoderOutput: [0]->0x%08x\n", encoderOutput[0]);
printf("encoderOutput: [1]->0x%08x\n", encoderOutput[1]);*/
/*
if (decoder_int16==1) {
if (channelOutput[i] > 15) channelOutput_int8[i] = 127;
else if (channelOutput[i] < -16) channelOutput_int8[i] = -128;
else channelOutput_int8[i] = (int16_t) (8*channelOutput[i]);
}
*/
//Bit-to-byte:
nr_bit2byte_uint32_8_t
(
encoderOutput
,
coderLength
,
encoderOutputByte
);
...
...
@@ -341,6 +336,15 @@ int main(int argc, char *argv[]) {
modulatedInput
[
i
]
=
(
-
1
)
/
sqrt
(
2
);
channelOutput
[
i
]
=
modulatedInput
[
i
]
+
(
gaussdouble
(
0
.
0
,
1
.
0
)
*
(
1
/
sqrt
(
2
*
SNR_lin
)));
if
(
decoder_int16
==
1
)
{
if
(
channelOutput
[
i
]
>
15
)
channelOutput_int16
[
i
]
=
127
;
else
if
(
channelOutput
[
i
]
<
-
16
)
channelOutput_int16
[
i
]
=
-
128
;
else
channelOutput_int16
[
i
]
=
(
int16_t
)
(
8
*
channelOutput
[
i
]);
}
}
start_meas
(
&
timeDecoder
);
...
...
@@ -350,12 +354,19 @@ int main(int argc, char *argv[]) {
NR_POLAR_DECODER_LISTSIZE,
aPrioriArray,
NR_POLAR_DECODER_PATH_METRIC_APPROXIMATION);*/
decoderState
=
polar_decoder_aPriori
(
channelOutput
,
estimatedOutput
,
currentPtr
,
NR_POLAR_DECODER_LISTSIZE
,
NR_POLAR_DECODER_PATH_METRIC_APPROXIMATION
,
aPrioriArray
);
if
(
decoder_int16
==
0
)
decoderState
=
polar_decoder_aPriori
(
channelOutput
,
estimatedOutput
,
currentPtr
,
NR_POLAR_DECODER_LISTSIZE
,
NR_POLAR_DECODER_PATH_METRIC_APPROXIMATION
,
aPrioriArray
);
else
decoderState
=
polar_decoder_int16
(
channelOutput_int16
,
estimatedOutput
,
currentPtr
);
stop_meas
(
&
timeDecoder
);
/*printf("testInput: [0]->0x%08x\n", testInput[0]);
printf("estimatedOutput: [0]->0x%08x\n", estimatedOutput[0]);*/
...
...
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c
View file @
f4156d2c
...
...
@@ -1039,7 +1039,7 @@ int8_t polar_decoder_dci(double *input,
int8_t
polar_decoder_int16
(
int16_t
*
input
,
uint8_t
*
out
put
,
uint8_t
*
out
,
t_nrPolar_params
*
polarParams
)
{
...
...
@@ -1069,9 +1069,9 @@ int8_t polar_decoder_int16(int16_t *input,
nr_polar_deinterleaver
(
polarParams
->
nr_polar_CPrime
,
polarParams
->
nr_polar_B
,
polarParams
->
interleaving_pattern
,
polarParams
->
K
);
//Remove the CRC (â)
for
(
int
j
=
0
;
j
<
polarParams
->
payloadBits
;
j
++
)
output
[
j
]
=
polarParams
->
nr_polar_B
[
j
];
for
(
int
j
=
0
;
j
<
polarParams
->
payloadBits
;
j
++
)
polarParams
->
nr_polar_A
[
j
]
=
polarParams
->
nr_polar_B
[
j
];
nr_byte2bit_uint8_32_t
(
polarParams
->
nr_polar_A
,
polarParams
->
payloadBits
,
out
);
return
(
0
);
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoding_tools.c
View file @
f4156d2c
...
...
@@ -34,6 +34,7 @@
#include "PHY/sse_intrin.h"
#include "PHY/impl_defs_top.h"
//#define DEBUG_NEW_IMPL
void
updateLLR
(
double
***
llr
,
uint8_t
**
llrU
,
...
...
@@ -266,7 +267,7 @@ void applyFtoleft(t_nrPolar_params *pp,decoder_node_t *node) {
for
(
int
i
=
0
;
i
<
node
->
Nv
;
i
++
)
printf
(
"i%d (frozen %d): alpha_v[i] = %d
\n
"
,
i
,
1
-
pp
->
information_bit_pattern
[
node
->
first_leaf_index
+
i
],
alpha_v
[
i
]);
#endif
if
(
node
->
left
->
all_frozen
==
0
)
{
...
...
@@ -275,7 +276,8 @@ void applyFtoleft(t_nrPolar_params *pp,decoder_node_t *node) {
if
(
avx2mod
==
0
)
{
__m256i
a256
,
b256
,
absa256
,
absb256
,
minabs256
;
int
avx2len
=
node
->
Nv
/
2
/
16
;
// printf("avx2len %d\n",avx2len);
for
(
int
i
=
0
;
i
<
avx2len
;
i
++
)
{
a256
=
((
__m256i
*
)
alpha_v
)[
i
];
b256
=
((
__m256i
*
)
alpha_v
)[
i
+
avx2len
];
...
...
@@ -283,6 +285,13 @@ void applyFtoleft(t_nrPolar_params *pp,decoder_node_t *node) {
absb256
=
_mm256_abs_epi16
(
b256
);
minabs256
=
_mm256_min_epi16
(
absa256
,
absb256
);
((
__m256i
*
)
alpha_l
)[
i
]
=
_mm256_sign_epi16
(
minabs256
,
_mm256_xor_si256
(
a256
,
b256
));
/* for (int j=0;j<16;j++) printf("alphal[%d] %d (%d,%d,%d)\n",
(16*i) + j,
alpha_l[(16*i)+j],
((int16_t*)&minabs256)[j],
alpha_v[(16*i)+j],
alpha_v[(16*i)+j+(node->Nv/2)]);
*/
}
}
else
if
(
avx2mod
==
8
)
{
...
...
@@ -315,6 +324,7 @@ void applyFtoleft(t_nrPolar_params *pp,decoder_node_t *node) {
absb
=
(
b
+
maskb
)
^
maskb
;
minabs
=
absa
<
absb
?
absa
:
absb
;
alpha_l
[
i
]
=
(
maska
^
maskb
)
==
0
?
minabs
:
-
minabs
;
// printf("alphal[%d] %d (%d,%d)\n",i,alpha_l[i],a,b);
}
}
if
(
node
->
Nv
==
2
)
{
// apply hard decision on left node
...
...
@@ -368,7 +378,7 @@ void applyGtoright(t_nrPolar_params *pp,decoder_node_t *node) {
betar
[
0
]
=
(
alpha_r
[
0
]
>
0
)
?
-
1
:
1
;
pp
->
nr_polar_U
[
node
->
first_leaf_index
+
1
]
=
(
1
+
betar
[
0
])
>>
1
;
#ifdef DEBUG_NEW_IMPL
printf
(
"Setting bit %d to %d (LLR %d
frozen_mask %d)
\n
"
,
node
->
first_leaf_index
+
1
,(
betar
[
0
]
+
1
)
>>
1
,
alpha_r
[
0
],
frozen_mask
);
printf
(
"Setting bit %d to %d (LLR %d
)
\n
"
,
node
->
first_leaf_index
+
1
,(
betar
[
0
]
+
1
)
>>
1
,
alpha_r
[
0
]
);
#endif
}
}
...
...
openair1/PHY/CODING/nr_polar_init.c
View file @
f4156d2c
...
...
@@ -147,6 +147,9 @@ void nr_polar_init(t_nrPolar_paramsPtr *polarParams,
free
(
J
);
build_decoder_tree
(
newPolarInitNode
);
printf
(
"decoder tree nodes %d
\n
"
,
newPolarInitNode
->
tree
.
num_nodes
);
}
else
{
AssertFatal
(
1
==
0
,
"[nr_polar_init] New t_nrPolar_paramsPtr could not be created"
);
}
...
...
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