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lizhongxiao
OpenXG-RAN
Commits
64c28bf9
Commit
64c28bf9
authored
3 years ago
by
rmagueta
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Plain Diff
Normalization of energy over ifft and receive antennas
parent
abef7f0b
Changes
2
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2 changed files
with
24 additions
and
12 deletions
+24
-12
openair1/PHY/NR_TRANSPORT/nr_prach.c
openair1/PHY/NR_TRANSPORT/nr_prach.c
+23
-11
openair2/GNB_APP/L1_nr_paramdef.h
openair2/GNB_APP/L1_nr_paramdef.h
+1
-1
No files found.
openair1/PHY/NR_TRANSPORT/nr_prach.c
View file @
64c28bf9
...
...
@@ -872,24 +872,36 @@ void rx_nr_prach(PHY_VARS_gNB *gNB,
// Now do IFFT of size 1024 (N_ZC=839) or 256 (N_ZC=139)
if
(
N_ZC
==
839
)
{
log2_ifft_size
=
10
;
idft
(
IDFT_1024
,
prachF
,
prach_ifft_tmp
,
1
);
// compute energy and accumulate over receive antennas
for
(
i
=
0
;
i
<
2048
;
i
++
)
prach_ifft
[
i
]
+=
(
(
int32_t
)
prach_ifft_tmp
[
i
<<
1
]
*
(
int32_t
)
prach_ifft_tmp
[
i
<<
1
]
+
(
int32_t
)
prach_ifft_tmp
[
1
+
(
i
<<
1
)]
*
(
int32_t
)
prach_ifft_tmp
[
1
+
(
i
<<
1
)])
/
nb_rx
;
for
(
i
=
0
;
i
<
1024
;
i
++
)
prach_ifft
[
i
]
+=
(
int32_t
)
prach_ifft_tmp
[
i
<<
1
]
*
(
int32_t
)
prach_ifft_tmp
[
i
<<
1
]
+
(
int32_t
)
prach_ifft_tmp
[
1
+
(
i
<<
1
)]
*
(
int32_t
)
prach_ifft_tmp
[
1
+
(
i
<<
1
)]
;
}
else
{
idft
(
IDFT_256
,
prachF
,
prach_ifft_tmp
,
1
);
log2_ifft_size
=
8
;
// compute energy and accumulate over receive antennas and repetitions for BR
for
(
i
=
0
;
i
<
256
;
i
++
)
prach_ifft
[
i
]
+=
((
int32_t
)
prach_ifft_tmp
[
i
<<
1
]
*
(
int32_t
)
prach_ifft_tmp
[(
i
<<
1
)]
+
(
int32_t
)
prach_ifft_tmp
[
1
+
(
i
<<
1
)]
*
(
int32_t
)
prach_ifft_tmp
[
1
+
(
i
<<
1
)])
/
nb_rx
;
}
// compute energy and accumulate over receive antennas and repetitions for BR
for
(
i
=
0
;
i
<
256
;
i
++
)
prach_ifft
[
i
]
+=
(
int32_t
)
prach_ifft_tmp
[
i
<<
1
]
*
(
int32_t
)
prach_ifft_tmp
[(
i
<<
1
)]
+
(
int32_t
)
prach_ifft_tmp
[
1
+
(
i
<<
1
)]
*
(
int32_t
)
prach_ifft_tmp
[
1
+
(
i
<<
1
)];
}
if
(
LOG_DUMPFLAG
(
PRACH
))
{
if
(
aa
==
0
)
LOG_M
(
"prach_rxF_comp0.m"
,
"prach_rxF_comp0"
,
prachF
,
1024
,
1
,
1
);
if
(
aa
==
1
)
LOG_M
(
"prach_rxF_comp1.m"
,
"prach_rxF_comp1"
,
prachF
,
1024
,
1
,
1
);
}
if
(
LOG_DUMPFLAG
(
PRACH
))
{
if
(
aa
==
0
)
LOG_M
(
"prach_rxF_comp0.m"
,
"prach_rxF_comp0"
,
prachF
,
1024
,
1
,
1
);
if
(
aa
==
1
)
LOG_M
(
"prach_rxF_comp1.m"
,
"prach_rxF_comp1"
,
prachF
,
1024
,
1
,
1
);
}
}
// antennas_rx
// Normalization of energy over ifft and receive antennas
if
(
N_ZC
==
839
)
{
log2_ifft_size
=
10
;
for
(
i
=
0
;
i
<
1024
;
i
++
)
prach_ifft
[
i
]
=
(
prach_ifft
[
i
]
>>
log2_ifft_size
)
/
nb_rx
;
}
else
{
log2_ifft_size
=
8
;
for
(
i
=
0
;
i
<
256
;
i
++
)
prach_ifft
[
i
]
=
(
prach_ifft
[
i
]
>>
log2_ifft_size
)
/
nb_rx
;
}
}
// new dft
// check energy in nth time shift, for
...
...
This diff is collapsed.
Click to expand it.
openair2/GNB_APP/L1_nr_paramdef.h
View file @
64c28bf9
...
...
@@ -66,7 +66,7 @@
{CONFIG_STRING_L1_REMOTE_N_PORTD, NULL, 0, uptr:NULL, defintval:50031, TYPE_UINT, 0}, \
{CONFIG_STRING_L1_PUSCH_PROC_THREADS, NULL, 0, uptr:NULL, defintval:1, TYPE_UINT, 0}, \
{CONFIG_STRING_L1_PUCCH0_DTX_THRESHOLD, NULL, 0, uptr:NULL, defintval:100, TYPE_UINT, 0}, \
{CONFIG_STRING_L1_PRACH_DTX_THRESHOLD, NULL, 0, uptr:NULL, defintval:
20
0, TYPE_UINT, 0}, \
{CONFIG_STRING_L1_PRACH_DTX_THRESHOLD, NULL, 0, uptr:NULL, defintval:
15
0, TYPE_UINT, 0}, \
{CONFIG_STRING_L1_PUSCH_DTX_THRESHOLD, NULL, 0, uptr:NULL, defintval:50, TYPE_UINT, 0} \
}
#define L1_CC_IDX 0
...
...
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Click to expand it.
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