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oai
openairinterface5G
Commits
dc636f2b
Commit
dc636f2b
authored
Oct 01, 2015
by
Xiwen JIANG
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Plain Diff
calculate channel level for TM7
parent
b6b7bd1c
Changes
2
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2 changed files
with
78 additions
and
2 deletions
+78
-2
openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
+72
-2
openair1/PHY/LTE_TRANSPORT/proto.h
openair1/PHY/LTE_TRANSPORT/proto.h
+6
-0
No files found.
openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
View file @
dc636f2b
...
...
@@ -280,8 +280,8 @@ int rx_pdsch(PHY_VARS_UE *phy_vars_ue,
avg
,
symbol
,
nb_rb
);
else
dlsch_channel_level
(
lte_ue_pdsch_vars
[
eNB_id
]
->
dl_bf_ch_estimates_ext
,
else
if
(
beamforming_mode
==
7
)
dlsch_channel_level
_TM7
(
lte_ue_pdsch_vars
[
eNB_id
]
->
dl_bf_ch_estimates_ext
,
frame_parms
,
avg
,
symbol
,
...
...
@@ -2972,6 +2972,76 @@ void dlsch_channel_level_TM56(int **dl_ch_estimates_ext,
#endif
}
//compute average channel_level for TM7
void
dlsch_channel_level_TM7
(
int
**
dl_bf_ch_estimates_ext
,
LTE_DL_FRAME_PARMS
*
frame_parms
,
int
*
avg
,
uint8_t
symbol
,
unsigned
short
nb_rb
)
{
#if defined(__x86_64__)||defined(__i386__)
short
rb
;
unsigned
char
aatx
,
aarx
,
nre
=
12
,
symbol_mod
;
__m128i
*
dl_ch128
,
avg128D
;
symbol_mod
=
(
symbol
>=
(
7
-
frame_parms
->
Ncp
))
?
symbol
-
(
7
-
frame_parms
->
Ncp
)
:
symbol
;
for
(
aatx
=
0
;
aatx
<
frame_parms
->
nb_antennas_tx_eNB
;
aatx
++
)
for
(
aarx
=
0
;
aarx
<
frame_parms
->
nb_antennas_rx
;
aarx
++
)
{
//clear average level
avg128D
=
_mm_setzero_si128
();
// 5 is always a symbol with no pilots for both normal and extended prefix
dl_ch128
=
(
__m128i
*
)
&
dl_bf_ch_estimates_ext
[(
aatx
<<
1
)
+
aarx
][
symbol
*
frame_parms
->
N_RB_DL
*
12
];
for
(
rb
=
0
;
rb
<
nb_rb
;
rb
++
)
{
// printf("rb %d : ",rb);
// print_shorts("ch",&dl_ch128[0]);
avg128D
=
_mm_add_epi32
(
avg128D
,
_mm_madd_epi16
(
dl_ch128
[
0
],
dl_ch128
[
0
]));
avg128D
=
_mm_add_epi32
(
avg128D
,
_mm_madd_epi16
(
dl_ch128
[
1
],
dl_ch128
[
1
]));
if
(((
symbol_mod
==
0
)
||
(
symbol_mod
==
(
frame_parms
->
Ncp
-
1
)))
&&
(
frame_parms
->
mode1_flag
==
0
))
{
dl_ch128
+=
2
;
}
else
{
avg128D
=
_mm_add_epi32
(
avg128D
,
_mm_madd_epi16
(
dl_ch128
[
2
],
dl_ch128
[
2
]));
dl_ch128
+=
3
;
}
/*
if (rb==0) {
print_shorts("dl_ch128",&dl_ch128[0]);
print_shorts("dl_ch128",&dl_ch128[1]);
print_shorts("dl_ch128",&dl_ch128[2]);
}
*/
}
if
(((
symbol_mod
==
0
)
||
(
symbol_mod
==
(
frame_parms
->
Ncp
-
1
))))
nre
=
10
;
else
if
((
frame_parms
->
Ncp
==
0
)
&&
(
symbol
==
3
||
symbol
==
6
||
symbol
==
9
||
symbol
==
12
))
nre
=
9
;
else
if
((
frame_parms
->
Ncp
==
1
)
&&
(
symbol
==
4
||
symbol
==
7
||
symbol
==
9
))
nre
=
8
;
else
nre
=
12
;
avg
[(
aatx
<<
1
)
+
aarx
]
=
(((
int
*
)
&
avg128D
)[
0
]
+
((
int
*
)
&
avg128D
)[
1
]
+
((
int
*
)
&
avg128D
)[
2
]
+
((
int
*
)
&
avg128D
)[
3
])
/
(
nb_rb
*
nre
);
// printf("Channel level : %d\n",avg[(aatx<<1)+aarx]);
}
_mm_empty
();
_m_empty
();
#elif defined(__arm__)
#endif
}
void
dlsch_alamouti
(
LTE_DL_FRAME_PARMS
*
frame_parms
,
int
**
rxdataF_comp
,
...
...
openair1/PHY/LTE_TRANSPORT/proto.h
View file @
dc636f2b
...
...
@@ -1046,6 +1046,12 @@ void dlsch_channel_level_TM56(int32_t **dl_ch_estimates_ext,
uint8_t
symbol_mod
,
uint16_t
nb_rb
);
void
dlsch_channel_level_TM7
(
int32_t
**
dl_bf_ch_estimates_ext
,
LTE_DL_FRAME_PARMS
*
frame_parms
,
int32_t
*
avg
,
uint8_t
pilots_flag
,
uint16_t
nb_rb
);
void
dlsch_scale_channel
(
int32_t
**
dl_ch_estimates_ext
,
LTE_DL_FRAME_PARMS
*
frame_parms
,
LTE_UE_DLSCH_t
**
dlsch_ue
,
...
...
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