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Michael Black
OpenXG UE
Commits
392d5b01
Commit
392d5b01
authored
Nov 10, 2018
by
Raymond Knopp
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addition of up to 128-bit polar decoding, tested up to 64-bit
parent
b31adeea
Changes
2
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2 changed files
with
49 additions
and
21 deletions
+49
-21
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c
+47
-20
openair1/PHY/CODING/nrPolar_tools/nr_polar_defs.h
openair1/PHY/CODING/nrPolar_tools/nr_polar_defs.h
+2
-1
No files found.
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c
View file @
392d5b01
...
@@ -1042,9 +1042,9 @@ int8_t polar_decoder_dci(double *input,
...
@@ -1042,9 +1042,9 @@ int8_t polar_decoder_dci(double *input,
void
init_polar_deinterleaver_table
(
t_nrPolar_params
*
polarParams
)
{
void
init_polar_deinterleaver_table
(
t_nrPolar_params
*
polarParams
)
{
AssertFatal
(
polarParams
->
K
>
32
,
"K = %d < 33, is not supported yet
\n
"
,
polarParams
->
K
);
AssertFatal
(
polarParams
->
K
>
32
,
"K = %d < 33, is not supported yet
\n
"
,
polarParams
->
K
);
AssertFatal
(
polarParams
->
K
<
65
,
"K = %d > 64
, is not supported yet
\n
"
,
polarParams
->
K
);
AssertFatal
(
polarParams
->
K
<
129
,
"K = %d > 128
, is not supported yet
\n
"
,
polarParams
->
K
);
int
bit_i
,
ip
;
int
bit_i
,
ip
,
ipmod64
;
int
numbytes
=
polarParams
->
K
>>
3
;
int
numbytes
=
polarParams
->
K
>>
3
;
int
residue
=
polarParams
->
K
&
7
;
int
residue
=
polarParams
->
K
&
7
;
...
@@ -1055,10 +1055,12 @@ void init_polar_deinterleaver_table(t_nrPolar_params *polarParams) {
...
@@ -1055,10 +1055,12 @@ void init_polar_deinterleaver_table(t_nrPolar_params *polarParams) {
else
numbits
=
residue
;
else
numbits
=
residue
;
for
(
int
i
=
0
;
i
<
numbits
;
i
++
)
{
for
(
int
i
=
0
;
i
<
numbits
;
i
++
)
{
ip
=
polarParams
->
interleaving_pattern
[(
8
*
byte
)
+
i
];
ip
=
polarParams
->
interleaving_pattern
[(
8
*
byte
)
+
i
];
AssertFatal
(
ip
<
64
,
"ip = %d
\n
"
,
ip
);
ipmod64
=
ip
&
63
;
AssertFatal
(
ip
<
128
,
"ip = %d
\n
"
,
ip
);
for
(
int
val
=
0
;
val
<
256
;
val
++
)
{
for
(
int
val
=
0
;
val
<
256
;
val
++
)
{
bit_i
=
(
val
>>
i
)
&
1
;
bit_i
=
(
val
>>
i
)
&
1
;
polarParams
->
B_tab
[
byte
][
val
]
|=
(((
uint64_t
)
bit_i
)
<<
ip
);
if
(
ip
<
64
)
polarParams
->
B_tab0
[
byte
][
val
]
|=
(((
uint64_t
)
bit_i
)
<<
ipmod64
);
else
polarParams
->
B_tab1
[
byte
][
val
]
|=
(((
uint64_t
)
bit_i
)
<<
ipmod64
);
}
}
}
}
}
}
...
@@ -1084,28 +1086,53 @@ int8_t polar_decoder_int16(int16_t *input,
...
@@ -1084,28 +1086,53 @@ int8_t polar_decoder_int16(int16_t *input,
//Extract the information bits (û to ĉ)
//Extract the information bits (û to ĉ)
uint64_t
Cprime
=
0
;
uint64_t
Cprime
[
4
]
=
{
0
,
0
,
0
,
0
}
;
uint64_t
B
;
uint64_t
B
[
4
]
=
{
0
,
0
,
0
,
0
}
;
for
(
int
i
=
0
;
i
<
polarParams
->
K
;
i
++
)
Cprime
=
Cprime
|
((
uint64_t
)
polarParams
->
nr_polar_U
[
polarParams
->
Q_I_N
[
i
]])
<<
i
;
for
(
int
i
=
0
;
i
<
polarParams
->
K
;
i
++
)
Cprime
[
i
>>
6
]
=
Cprime
[
i
>>
6
]
|
((
uint64_t
)
polarParams
->
nr_polar_U
[
polarParams
->
Q_I_N
[
i
]])
<<
(
i
&
63
)
;
//Deinterleaving (ĉ to b)
//Deinterleaving (ĉ to b)
uint8_t
*
Cprimebyte
=
(
uint8_t
*
)
&
Cprime
;
uint8_t
*
Cprimebyte
=
(
uint8_t
*
)
Cprime
;
B
=
polarParams
->
B_tab
[
0
][
Cprimebyte
[
0
]]
|
if
(
polarParams
->
K
<
65
)
{
polarParams
->
B_tab
[
1
][
Cprimebyte
[
1
]]
|
B
[
0
]
=
polarParams
->
B_tab0
[
0
][
Cprimebyte
[
0
]]
|
polarParams
->
B_tab
[
2
][
Cprimebyte
[
2
]]
|
polarParams
->
B_tab0
[
1
][
Cprimebyte
[
1
]]
|
polarParams
->
B_tab
[
3
][
Cprimebyte
[
3
]]
|
polarParams
->
B_tab0
[
2
][
Cprimebyte
[
2
]]
|
polarParams
->
B_tab
[
4
][
Cprimebyte
[
4
]]
|
polarParams
->
B_tab0
[
3
][
Cprimebyte
[
3
]]
|
polarParams
->
B_tab
[
5
][
Cprimebyte
[
5
]]
|
polarParams
->
B_tab0
[
4
][
Cprimebyte
[
4
]]
|
polarParams
->
B_tab
[
6
][
Cprimebyte
[
6
]]
|
polarParams
->
B_tab0
[
5
][
Cprimebyte
[
5
]]
|
polarParams
->
B_tab
[
7
][
Cprimebyte
[
7
]];
polarParams
->
B_tab0
[
6
][
Cprimebyte
[
6
]]
|
polarParams
->
B_tab0
[
7
][
Cprimebyte
[
7
]];
}
if
(
polarParams
->
K
<
129
)
{
for
(
int
k
=
0
;
k
<
polarParams
->
K
;
k
++
)
{
B
[
0
]
|=
polarParams
->
B_tab0
[
k
][
Cprimebyte
[
k
]];
B
[
1
]
|=
polarParams
->
B_tab1
[
k
][
Cprimebyte
[
k
]];
}
}
int
len
=
polarParams
->
payloadBits
;
int
len_mod64
=
len
&
63
;
int
quadwpos
=
len
>>
6
;
int
crclen
=
polarParams
->
crcParityBits
;
int
quadwpos2
=
polarParams
->
K
>>
6
;
uint64_t
rxcrc
;
if
(
len_mod64
==
0
)
rxcrc
=
0
;
else
rxcrc
=
B
[
quadwpos
]
>>
len_mod64
;
if
(
quadwpos2
>
quadwpos
)
{
// there are extra CRC bits in the next quadword
rxcrc
|=
(
B
[
quadwpos2
]
<<
(
64
-
len_mod64
));
}
#if 0
#if 0
printf("Decoded B %llx
(crc %x,B>>payloadBits %x)\n",B
,crc24c((uint8_t*)&B,polarParams->payloadBits)>>8,
printf("Decoded B %llx
%llx (crc %x,B>>payloadBits %x)\n",B[1],B[0]
,crc24c((uint8_t*)&B,polarParams->payloadBits)>>8,
(uint32_t)
(B>>polarParams->payloadBits)
);
(uint32_t)
rxcrc
);
#endif
#endif
if
((
uint64_t
)(
crc24c
((
uint8_t
*
)
&
B
[
0
],
polarParams
->
payloadBits
)
>>
8
)
==
rxcrc
)
{
if
((
uint64_t
)(
crc24c
((
uint8_t
*
)
&
B
,
polarParams
->
payloadBits
)
>>
8
)
==
(
B
>>
polarParams
->
payloadBits
))
{
int
k
=
0
;
*
out
=
B
&
(((
uint64_t
)
1
<<
polarParams
->
payloadBits
)
-
1
);
// copy quadwords without CRC directly
for
(
k
=
0
;
k
<
polarParams
->
payloadBits
/
64
;
k
++
)
out
[
k
]
=
B
[
k
];
// copy last one
out
[
k
]
=
B
[
k
]
&
(((
uint64_t
)
1
<<
(
polarParams
->
payloadBits
&
63
))
-
1
);
return
(
0
);
return
(
0
);
}
}
...
...
openair1/PHY/CODING/nrPolar_tools/nr_polar_defs.h
View file @
392d5b01
...
@@ -115,7 +115,8 @@ struct nrPolar_params {
...
@@ -115,7 +115,8 @@ struct nrPolar_params {
int
*
rm_tab
;
int
*
rm_tab
;
uint64_t
cprime_tab0
[
8
][
256
];
uint64_t
cprime_tab0
[
8
][
256
];
uint64_t
cprime_tab1
[
8
][
256
];
uint64_t
cprime_tab1
[
8
][
256
];
uint64_t
B_tab
[
8
][
256
];
uint64_t
B_tab0
[
8
][
256
];
uint64_t
B_tab1
[
8
][
256
];
uint32_t
*
crc256Table
;
uint32_t
*
crc256Table
;
uint8_t
**
extended_crc_generator_matrix
;
uint8_t
**
extended_crc_generator_matrix
;
//lowercase: bits, Uppercase: Bits stored in bytes
//lowercase: bits, Uppercase: Bits stored in bytes
...
...
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