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Michael Black
OpenXG UE
Commits
12c888f9
Commit
12c888f9
authored
Sep 10, 2018
by
Raymond Knopp
Browse files
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Plain Diff
timing statistics and memory clearing
parent
ee0603cd
Changes
3
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Showing
3 changed files
with
88 additions
and
25 deletions
+88
-25
openair1/PHY/CODING/TESTBENCH/polartest.c
openair1/PHY/CODING/TESTBENCH/polartest.c
+22
-4
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c
+55
-20
openair1/PHY/CODING/nrPolar_tools/nr_polar_defs.h
openair1/PHY/CODING/nrPolar_tools/nr_polar_defs.h
+11
-1
No files found.
openair1/PHY/CODING/TESTBENCH/polartest.c
View file @
12c888f9
...
...
@@ -15,10 +15,20 @@ int main(int argc, char *argv[]) {
//Initiate timing. (Results depend on CPU Frequency. Therefore, might change due to performance variances during simulation.)
time_stats_t
timeEncoder
,
timeDecoder
;
time_stats_t
polar_decoder_init
,
polar_rate_matching
,
decoding
,
bit_extraction
,
deinterleaving
;
time_stats_t
path_metric
,
sorting
,
update_LLR
;
opp_enabled
=
1
;
cpu_freq_GHz
=
get_cpu_freq_GHz
();
reset_meas
(
&
timeEncoder
);
reset_meas
(
&
timeDecoder
);
reset_meas
(
&
polar_decoder_init
);
reset_meas
(
&
polar_rate_matching
);
reset_meas
(
&
decoding
);
reset_meas
(
&
bit_extraction
);
reset_meas
(
&
deinterleaving
);
reset_meas
(
&
sorting
);
reset_meas
(
&
path_metric
);
reset_meas
(
&
update_LLR
);
randominit
(
0
);
//Default simulation values (Aim for iterations = 1000000.)
...
...
@@ -128,7 +138,7 @@ int main(int argc, char *argv[]) {
// We assume no a priori knowledge available about the payload.
double
aPrioriArray
[
nrPolar_params
.
payloadBits
];
for
(
int
i
=
0
;
i
<
nrPolar_params
.
payloadBits
;
i
++
)
aPrioriArray
[
i
]
=
NAN
;
for
(
int
i
=
0
;
i
<
=
nrPolar_params
.
payloadBits
;
i
++
)
aPrioriArray
[
i
]
=
NAN
;
for
(
SNR
=
SNRstart
;
SNR
<=
SNRstop
;
SNR
+=
SNRinc
)
{
SNR_lin
=
pow
(
10
,
SNR
/
10
);
...
...
@@ -153,8 +163,8 @@ int main(int argc, char *argv[]) {
start_meas
(
&
timeDecoder
);
decoderState
=
polar_decoder
(
channelOutput
,
estimatedOutput
,
&
nrPolar_params
,
decoderListSize
,
aPrioriArray
,
pathMetricAppr
);
stop_meas
(
&
timeDecoder
);
decoderState
=
polar_decoder
(
channelOutput
,
estimatedOutput
,
&
nrPolar_params
,
decoderListSize
,
aPrioriArray
,
pathMetricAppr
,
&
polar_decoder_init
,
&
polar_rate_matching
,
&
decoding
,
&
bit_extraction
,
&
deinterleaving
,
&
sorting
,
&
path_metric
,
&
update_LLR
);
stop_meas
(
&
timeDecoder
);
//calculate errors
if
(
decoderState
==-
1
)
{
...
...
@@ -191,7 +201,15 @@ int main(int argc, char *argv[]) {
decoderListSize
,
pathMetricAppr
,
SNR
,
((
double
)
blockErrorCumulative
/
iterations
),
((
double
)
bitErrorCumulative
/
(
iterations
*
testLength
)),
(
timeEncoderCumulative
/
iterations
),
timeDecoderCumulative
/
iterations
);
printf
(
"decoding init %9.3fus
\n
"
,
polar_decoder_init
.
diff
/
(
cpu_freq_GHz
*
1000
.
0
*
polar_decoder_init
.
trials
));
printf
(
"decoding polar_rate_matching %9.3fus
\n
"
,
polar_rate_matching
.
diff
/
(
cpu_freq_GHz
*
1000
.
0
*
polar_rate_matching
.
trials
));
printf
(
"decoding decoding %9.3fus
\n
"
,
decoding
.
diff
/
(
cpu_freq_GHz
*
1000
.
0
*
decoding
.
trials
));
printf
(
"decoding bit_extraction %9.3fus
\n
"
,
bit_extraction
.
diff
/
(
cpu_freq_GHz
*
1000
.
0
*
bit_extraction
.
trials
));
printf
(
"decoding deinterleaving %9.3fus
\n
"
,
deinterleaving
.
diff
/
(
cpu_freq_GHz
*
1000
.
0
*
deinterleaving
.
trials
));
printf
(
"decoding path_metric %9.3fus
\n
"
,
path_metric
.
diff
/
(
cpu_freq_GHz
*
1000
.
0
*
deinterleaving
.
trials
));
printf
(
"decoding sorting %9.3fus
\n
"
,
sorting
.
diff
/
(
cpu_freq_GHz
*
1000
.
0
*
deinterleaving
.
trials
));
printf
(
"decoding updateLLR %9.3fus
\n
"
,
update_LLR
.
diff
/
(
cpu_freq_GHz
*
1000
.
0
*
deinterleaving
.
trials
));
blockErrorCumulative
=
0
;
bitErrorCumulative
=
0
;
timeEncoderCumulative
=
0
;
timeDecoderCumulative
=
0
;
}
...
...
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c
View file @
12c888f9
...
...
@@ -27,6 +27,7 @@
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
#include "PHY/CODING/nrPolar_tools/nr_polar_pbch_defs.h"
#include "PHY/TOOLS/time_meas.h"
int8_t
polar_decoder
(
double
*
input
,
...
...
@@ -34,9 +35,19 @@ int8_t polar_decoder(
t_nrPolar_params
*
polarParams
,
uint8_t
listSize
,
double
*
aPrioriPayload
,
uint8_t
pathMetricAppr
)
uint8_t
pathMetricAppr
,
time_stats_t
*
init
,
time_stats_t
*
polar_rate_matching
,
time_stats_t
*
decoding
,
time_stats_t
*
bit_extraction
,
time_stats_t
*
deinterleaving
,
time_stats_t
*
sorting
,
time_stats_t
*
path_metric
,
time_stats_t
*
update_LLR
)
{
start_meas
(
init
);
uint8_t
***
bit
=
nr_alloc_uint8_t_3D_array
(
2
*
listSize
,
(
polarParams
->
n
+
1
),
polarParams
->
N
);
uint8_t
**
bitUpdated
=
nr_alloc_uint8_t_2D_array
(
polarParams
->
N
,
(
polarParams
->
n
+
1
));
//0=False, 1=True
uint8_t
**
llrUpdated
=
nr_alloc_uint8_t_2D_array
(
polarParams
->
N
,
(
polarParams
->
n
+
1
));
//0=False, 1=True
...
...
@@ -48,9 +59,15 @@ int8_t polar_decoder(
for
(
int
i
=
0
;
i
<
(
2
*
listSize
);
i
++
)
{
pathMetric
[
i
]
=
0
;
crcState
[
i
]
=
1
;
for
(
int
j
=
0
;
j
<
polarParams
->
n
+
1
;
j
++
)
memset
((
void
*
)
&
bit
[
i
][
j
][
0
],
0
,
sizeof
(
uint8_t
)
*
polarParams
->
N
);
for
(
int
j
=
0
;
j
<
polarParams
->
n
+
1
;
j
++
)
{
memset
((
void
*
)
&
bit
[
i
][
j
][
0
],
0
,
sizeof
(
uint8_t
)
*
polarParams
->
N
);
memset
((
void
*
)
&
llr
[
i
][
j
][
0
],
0
,
sizeof
(
double
)
*
polarParams
->
N
);
}
for
(
int
j
=
0
;
j
<
polarParams
->
crcParityBits
;
j
++
)
crcChecksum
[
j
][
i
]
=
0
;
}
for
(
int
i
=
0
;
i
<
polarParams
->
N
;
i
++
)
{
for
(
int
i
=
0
;
i
<
polarParams
->
N
;
i
++
)
{
memset
((
void
*
)
&
llrUpdated
[
i
][
0
],
0
,
sizeof
(
uint8_t
)
*
polarParams
->
n
);
memset
((
void
*
)
&
bitUpdated
[
i
][
0
],
0
,
sizeof
(
uint8_t
)
*
polarParams
->
n
);
llrUpdated
[
i
][
polarParams
->
n
]
=
1
;
bitUpdated
[
i
][
0
]
=
((
polarParams
->
information_bit_pattern
[
i
]
+
1
)
%
2
);
}
...
...
@@ -92,42 +109,53 @@ int8_t polar_decoder(
}
}
stop_meas
(
init
);
start_meas
(
polar_rate_matching
);
double
*
d_tilde
=
malloc
(
sizeof
(
double
)
*
polarParams
->
N
);
nr_polar_rate_matching
(
input
,
d_tilde
,
polarParams
->
rate_matching_pattern
,
polarParams
->
K
,
polarParams
->
N
,
polarParams
->
encoderLength
);
for
(
int
j
=
0
;
j
<
polarParams
->
N
;
j
++
)
llr
[
0
][
polarParams
->
n
][
j
]
=
d_tilde
[
j
]
;
memcpy
((
void
*
)
&
llr
[
0
][
polarParams
->
n
][
0
],(
void
*
)
&
d_tilde
[
0
],
sizeof
(
double
)
*
polarParams
->
N
)
;
stop_meas
(
polar_rate_matching
);
/*
* SCL polar decoder.
*/
start_meas
(
decoding
);
uint32_t
nonFrozenBit
=
0
;
uint8_t
currentListSize
=
1
;
uint8_t
decoderIterationCheck
=
0
;
int16_t
checkCrcBits
=-
1
;
uint8_t
listIndex
[
2
*
listSize
],
copyIndex
;
uint8_t
listIndex
[
2
*
listSize
],
copyIndex
=
0
;
// 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);
start_meas
(
update_LLR
);
updateLLR
(
llr
,
llrUpdated
,
bit
,
bitUpdated
,
currentListSize
,
currentBit
,
0
,
polarParams
->
N
,
(
polarParams
->
n
+
1
),
pathMetricAppr
);
stop_meas
(
update_LLR
);
if
(
polarParams
->
information_bit_pattern
[
currentBit
]
==
0
)
{
//Frozen bit.
updatePathMetric
(
pathMetric
,
llr
,
currentListSize
,
0
,
currentBit
,
pathMetricAppr
);
//approximation=0 --> 11b, approximation=1 --> 12
}
else
{
//Information or CRC bit.
if
(
(
polarParams
->
interleaving_pattern
[
nonFrozenBit
]
<=
polarParams
->
payloadBits
)
&&
(
aPrioriPayload
[
polarParams
->
interleaving_pattern
[
nonFrozenBit
]]
==
0
)
)
{
if
(
(
polarParams
->
interleaving_pattern
[
nonFrozenBit
]
<
polarParams
->
payloadBits
)
&&
(
aPrioriPayload
[
polarParams
->
interleaving_pattern
[
nonFrozenBit
]]
==
0
)
)
{
printf
(
"app[%d] %f, payloadBits %d
\n
"
,
polarParams
->
interleaving_pattern
[
nonFrozenBit
],
polarParams
->
payloadBits
,
aPrioriPayload
[
polarParams
->
interleaving_pattern
[
nonFrozenBit
]]);
//Information bit with known value of "0".
updatePathMetric
(
pathMetric
,
llr
,
currentListSize
,
0
,
currentBit
,
pathMetricAppr
);
bitUpdated
[
currentBit
][
0
]
=
1
;
//0=False, 1=True
}
else
if
(
(
polarParams
->
interleaving_pattern
[
nonFrozenBit
]
<
=
polarParams
->
payloadBits
)
&&
(
aPrioriPayload
[
polarParams
->
interleaving_pattern
[
nonFrozenBit
]]
==
1
)
)
{
}
else
if
(
(
polarParams
->
interleaving_pattern
[
nonFrozenBit
]
<
polarParams
->
payloadBits
)
&&
(
aPrioriPayload
[
polarParams
->
interleaving_pattern
[
nonFrozenBit
]]
==
1
)
)
{
//Information bit with known value of "1".
updatePathMetric
(
pathMetric
,
llr
,
currentListSize
,
1
,
currentBit
,
pathMetricAppr
);
for
(
uint8_t
i
=
0
;
i
<
currentListSize
;
i
++
)
bit
[
i
][
0
][
currentBit
]
=
1
;
bitUpdated
[
currentBit
][
0
]
=
1
;
updateCrcChecksum
(
crcChecksum
,
extended_crc_generator_matrix
,
currentListSize
,
nonFrozenBit
,
polarParams
->
crcParityBits
);
}
else
{
updatePathMetric2
(
pathMetric
,
llr
,
currentListSize
,
currentBit
,
pathMetricAppr
);
start_meas
(
path_metric
);
updatePathMetric2
(
pathMetric
,
llr
,
currentListSize
,
currentBit
,
pathMetricAppr
);
stop_meas
(
path_metric
);
start_meas
(
sorting
);
for
(
int
i
=
0
;
i
<
currentListSize
;
i
++
)
{
for
(
int
k
=
0
;
k
<
(
polarParams
->
n
+
1
);
k
++
)
{
/*
...
...
@@ -201,13 +229,15 @@ int8_t polar_decoder(
copyIndex
=
listIndex
[
k
];
}
for
(
int
j
=
0
;
j
<
(
polarParams
->
n
+
1
);
j
++
)
{
/* for (int i = 0; i < polarParams->N; i++) {
bit[k][j][i] = bit[copyIndex][j][i];
llr[k][j][i] = llr[copyIndex][j][i];
}*/
memcpy
((
void
*
)
&
bit
[
k
][
j
][
0
],(
void
*
)
&
bit
[
copyIndex
][
j
][
0
],
sizeof
(
uint8_t
)
*
polarParams
->
N
);
memcpy
((
void
*
)
&
llr
[
k
][
j
][
0
],(
void
*
)
&
llr
[
copyIndex
][
j
][
0
],
sizeof
(
double
)
*
polarParams
->
N
);
if
(
copyIndex
!=
k
)
{
for
(
int
j
=
0
;
j
<
(
polarParams
->
n
+
1
);
j
++
)
{
/* for (int i = 0; i < polarParams->N; i++) {
bit[k][j][i] = bit[copyIndex][j][i];
llr[k][j][i] = llr[copyIndex][j][i];
}*/
memcpy
((
void
*
)
&
bit
[
k
][
j
][
0
],(
void
*
)
&
bit
[
copyIndex
][
j
][
0
],
sizeof
(
uint8_t
)
*
polarParams
->
N
);
memcpy
((
void
*
)
&
llr
[
k
][
j
][
0
],(
void
*
)
&
llr
[
copyIndex
][
j
][
0
],
sizeof
(
double
)
*
polarParams
->
N
);
}
}
}
for
(
int
k
=
0
;
k
<
listSize
;
k
++
)
{
...
...
@@ -230,6 +260,7 @@ int8_t polar_decoder(
}
currentListSize
=
listSize
;
}
stop_meas
(
sorting
);
}
for
(
int
i
=
0
;
i
<
polarParams
->
crcParityBits
;
i
++
)
{
...
...
@@ -256,6 +287,7 @@ int8_t polar_decoder(
nr_free_uint8_t_3D_array
(
bit
,
2
*
listSize
,
(
polarParams
->
n
+
1
));
nr_free_double_3D_array
(
llr
,
2
*
listSize
,
(
polarParams
->
n
+
1
));
nr_free_uint8_t_2D_array
(
crcChecksum
,
polarParams
->
crcParityBits
);
stop_meas
(
decoding
);
return
(
-
1
);
}
...
...
@@ -272,12 +304,14 @@ int8_t polar_decoder(
if
(
crcState
[
listIndex
[
i
]]
==
1
)
{
for
(
int
j
=
0
;
j
<
polarParams
->
N
;
j
++
)
polarParams
->
nr_polar_u
[
j
]
=
bit
[
listIndex
[
i
]][
0
][
j
];
start_meas
(
bit_extraction
);
//Extract the information bits (û to ĉ)
nr_polar_info_bit_extraction
(
polarParams
->
nr_polar_u
,
polarParams
->
nr_polar_cPrime
,
polarParams
->
information_bit_pattern
,
polarParams
->
N
);
stop_meas
(
bit_extraction
);
//Deinterleaving (ĉ to b)
start_meas
(
deinterleaving
);
nr_polar_deinterleaver
(
polarParams
->
nr_polar_cPrime
,
polarParams
->
nr_polar_b
,
polarParams
->
interleaving_pattern
,
polarParams
->
K
);
stop_meas
(
deinterleaving
);
//Remove the CRC (â)
for
(
int
j
=
0
;
j
<
polarParams
->
payloadBits
;
j
++
)
output
[
j
]
=
polarParams
->
nr_polar_b
[
j
];
...
...
@@ -293,5 +327,6 @@ int8_t polar_decoder(
nr_free_uint8_t_2D_array
(
crcChecksum
,
polarParams
->
crcParityBits
);
nr_free_uint8_t_2D_array
(
extended_crc_generator_matrix
,
polarParams
->
K
);
nr_free_uint8_t_2D_array
(
tempECGM
,
polarParams
->
K
);
stop_meas
(
decoding
);
return
(
0
);
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_defs.h
View file @
12c888f9
...
...
@@ -30,6 +30,8 @@
#include <stdlib.h>
#include <string.h>
#include "PHY/TOOLS/time_meas.h"
static
const
uint8_t
nr_polar_subblock_interleaver_pattern
[
32
]
=
{
0
,
1
,
2
,
4
,
3
,
5
,
6
,
7
,
8
,
16
,
9
,
17
,
10
,
18
,
11
,
19
,
12
,
20
,
13
,
21
,
14
,
22
,
15
,
23
,
24
,
25
,
26
,
28
,
27
,
29
,
30
,
31
};
struct
nrPolar_params
{
...
...
@@ -75,7 +77,15 @@ void polar_encoder(uint8_t *input, uint8_t *output, t_nrPolar_params* polarParam
void
nr_polar_kernal_operation
(
uint8_t
*
u
,
uint8_t
*
d
,
uint16_t
N
);
int8_t
polar_decoder
(
double
*
input
,
uint8_t
*
output
,
t_nrPolar_params
*
polarParams
,
uint8_t
listSize
,
double
*
aPrioriPayload
,
uint8_t
pathMetricAppr
);
uint8_t
listSize
,
double
*
aPrioriPayload
,
uint8_t
pathMetricAppr
,
time_stats_t
*
init
,
time_stats_t
*
polar_rate_matching
,
time_stats_t
*
decoding
,
time_stats_t
*
bit_extraction
,
time_stats_t
*
deinterleaving
,
time_stats_t
*
sorting
,
time_stats_t
*
path_metric
,
time_stats_t
*
update_LLR
);
void
nr_polar_init
(
t_nrPolar_params
*
polarParams
,
int
messageType
);
...
...
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