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littleBu
OpenXG-RAN
Commits
90047871
Commit
90047871
authored
Feb 10, 2025
by
Laurent THOMAS
Browse files
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Plain Diff
group two symbol loops to make one with smaller tsack size and smaller variables
parent
f73afa39
Changes
3
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3 changed files
with
132 additions
and
140 deletions
+132
-140
openair1/PHY/MODULATION/nr_modulation.c
openair1/PHY/MODULATION/nr_modulation.c
+5
-9
openair1/PHY/MODULATION/nr_modulation.h
openair1/PHY/MODULATION/nr_modulation.h
+8
-12
openair1/PHY/NR_TRANSPORT/nr_dlsch.c
openair1/PHY/NR_TRANSPORT/nr_dlsch.c
+119
-119
No files found.
openair1/PHY/MODULATION/nr_modulation.c
View file @
90047871
...
@@ -738,30 +738,26 @@ c16_t nr_layer_precoder(int sz, c16_t datatx_F_precoding[][sz], const char *prec
...
@@ -738,30 +738,26 @@ c16_t nr_layer_precoder(int sz, c16_t datatx_F_precoding[][sz], const char *prec
}
}
c16_t
nr_layer_precoder_cm
(
int
n_layers
,
c16_t
nr_layer_precoder_cm
(
int
n_layers
,
int
n_symbols
,
int
symSz
,
int
symSz
,
c16_t
datatx_F_precoding
[
n_layers
][
n_symbols
][
symSz
],
c16_t
datatx_F_precoding
[
n_layers
][
symSz
],
int
ap
,
int
ap
,
nfapi_nr_pm_pdu_t
*
pmi_pdu
,
nfapi_nr_pm_pdu_t
*
pmi_pdu
,
int
symbol
,
int
offset
)
int
offset
)
{
{
c16_t
precodatatx_F
=
{
0
};
c16_t
precodatatx_F
=
{
0
};
for
(
int
al
=
0
;
al
<
n_layers
;
al
++
)
{
for
(
int
al
=
0
;
al
<
n_layers
;
al
++
)
{
nfapi_nr_pm_weights_t
*
w
=
&
pmi_pdu
->
weights
[
al
][
ap
];
nfapi_nr_pm_weights_t
*
w
=
&
pmi_pdu
->
weights
[
al
][
ap
];
c16_t
prec_weight
=
{.
r
=
w
->
precoder_weight_Re
,
.
i
=
w
->
precoder_weight_Im
};
c16_t
prec_weight
=
{.
r
=
w
->
precoder_weight_Re
,
.
i
=
w
->
precoder_weight_Im
};
precodatatx_F
=
c16maddShift
(
datatx_F_precoding
[
al
][
symbol
][
offset
],
prec_weight
,
precodatatx_F
,
15
);
precodatatx_F
=
c16maddShift
(
datatx_F_precoding
[
al
][
offset
],
prec_weight
,
precodatatx_F
,
15
);
}
}
return
precodatatx_F
;
return
precodatatx_F
;
}
}
void
nr_layer_precoder_simd
(
const
int
n_layers
,
void
nr_layer_precoder_simd
(
const
int
n_layers
,
const
int
n_symbols
,
const
int
symSz
,
const
int
symSz
,
const
c16_t
txdataF_res_mapped
[
n_layers
][
n_symbols
][
symSz
],
const
c16_t
txdataF_res_mapped
[
n_layers
][
symSz
],
const
int
ant
,
const
int
ant
,
const
nfapi_nr_pm_pdu_t
*
pmi_pdu
,
const
nfapi_nr_pm_pdu_t
*
pmi_pdu
,
const
int
symbol
,
const
int
sc_offset
,
const
int
sc_offset
,
const
int
re_cnt
,
const
int
re_cnt
,
c16_t
*
txdataF_precoded
)
c16_t
*
txdataF_precoded
)
...
@@ -811,7 +807,7 @@ void nr_layer_precoder_simd(const int n_layers,
...
@@ -811,7 +807,7 @@ void nr_layer_precoder_simd(const int n_layers,
#ifdef DEBUG_DLSCH_PRECODING_PRINT_WITH_TRIVIAL // Get result with trivial solution, TODO: To be removed
#ifdef DEBUG_DLSCH_PRECODING_PRINT_WITH_TRIVIAL // Get result with trivial solution, TODO: To be removed
c16_t
y_triv
[
4
];
c16_t
y_triv
[
4
];
for
(
int
i
=
0
;
i
<
4
;
i
++
)
for
(
int
i
=
0
;
i
<
4
;
i
++
)
y_triv
[
i
]
=
nr_layer_precoder_cm
(
n_layers
,
NR_SYMBOLS_PER_SLOT
,
symSz
,
txdataF_res_mapped
,
ant
,
pmi_pdu
,
symbol
,
sc
+
i
);
y_triv
[
i
]
=
nr_layer_precoder_cm
(
n_layers
,
symSz
,
txdataF_res_mapped
,
ant
,
pmi_pdu
,
sc
+
i
);
memcpy
(
&
txdataF_precoded
[
sc
],
y_triv
,
sizeof
(
y_triv
));
memcpy
(
&
txdataF_precoded
[
sc
],
y_triv
,
sizeof
(
y_triv
));
#endif
#endif
...
...
openair1/PHY/MODULATION/nr_modulation.h
View file @
90047871
...
@@ -135,12 +135,10 @@ void apply_nr_rotation_RX(const NR_DL_FRAME_PARMS *frame_parms,
...
@@ -135,12 +135,10 @@ void apply_nr_rotation_RX(const NR_DL_FRAME_PARMS *frame_parms,
c16_t
nr_layer_precoder
(
int
sz
,
c16_t
datatx_F_precoding
[][
sz
],
const
char
*
prec_matrix
,
uint8_t
n_layers
,
int32_t
re_offset
);
c16_t
nr_layer_precoder
(
int
sz
,
c16_t
datatx_F_precoding
[][
sz
],
const
char
*
prec_matrix
,
uint8_t
n_layers
,
int32_t
re_offset
);
c16_t
nr_layer_precoder_cm
(
int
n_layers
,
c16_t
nr_layer_precoder_cm
(
int
n_layers
,
int
n_symbols
,
int
symSz
,
int
symSz
,
c16_t
datatx_F_precoding
[
n_layers
][
n_symbols
][
symSz
],
c16_t
datatx_F_precoding
[
n_layers
][
symSz
],
int
ap
,
int
ap
,
nfapi_nr_pm_pdu_t
*
pmi_pdu
,
nfapi_nr_pm_pdu_t
*
pmi_pdu
,
int
symbol
,
int
offset
);
int
offset
);
/*! \brief Precoding with SIMDe, txdataF_precoded[] = prec_matrix[] * txdataF_res_mapped[]
/*! \brief Precoding with SIMDe, txdataF_precoded[] = prec_matrix[] * txdataF_res_mapped[]
...
@@ -150,12 +148,10 @@ c16_t nr_layer_precoder_cm(int n_layers,
...
@@ -150,12 +148,10 @@ c16_t nr_layer_precoder_cm(int n_layers,
@param[out] txdataF_precoded Precoded antenna data
@param[out] txdataF_precoded Precoded antenna data
*/
*/
void
nr_layer_precoder_simd
(
const
int
n_layers
,
void
nr_layer_precoder_simd
(
const
int
n_layers
,
const
int
n_symbols
,
const
int
symSz
,
const
int
symSz
,
const
c16_t
txdataF_res_mapped
[
n_layers
][
n_symbol
s
][
symSz
],
const
c16_t
txdataF_res_mapped
[
n_layer
s
][
symSz
],
const
int
ant
,
const
int
ant
,
const
nfapi_nr_pm_pdu_t
*
pmi_pdu
,
const
nfapi_nr_pm_pdu_t
*
pmi_pdu
,
const
int
symbol
,
const
int
sc_offset
,
const
int
sc_offset
,
const
int
re_cnt
,
const
int
re_cnt
,
c16_t
*
txdataF_precoded
);
c16_t
*
txdataF_precoded
);
...
...
openair1/PHY/NR_TRANSPORT/nr_dlsch.c
View file @
90047871
...
@@ -514,6 +514,99 @@ static inline int do_onelayer(NR_DL_FRAME_PARMS *frame_parms,
...
@@ -514,6 +514,99 @@ static inline int do_onelayer(NR_DL_FRAME_PARMS *frame_parms,
return
txl
-
txl_start
;
return
txl
-
txl_start
;
}
}
static
inline
void
do_txdataF
(
c16_t
**
txdataF
,
int
symbol_sz
,
c16_t
txdataF_precoding
[][
symbol_sz
],
PHY_VARS_gNB
*
gNB
,
nfapi_nr_dl_tti_pdsch_pdu_rel15_t
*
rel15
,
int
ant
,
int
start_sc
,
int
txdataF_offset_per_symbol
)
{
NR_DL_FRAME_PARMS
*
frame_parms
=
&
gNB
->
frame_parms
;
int
rb
=
0
;
uint16_t
subCarrier
=
start_sc
;
nfapi_nr_tx_precoding_and_beamforming_t
*
pb
=
&
rel15
->
precodingAndBeamforming
;
while
(
rb
<
rel15
->
rbSize
)
{
// get pmi info
const
int
pmi
=
(
pb
->
num_prgs
>
0
&&
pb
->
prg_size
>
0
)
?
(
pb
->
prgs_list
[(
int
)
rb
/
pb
->
prg_size
].
pm_idx
)
:
0
;
const
int
pmi2
=
(
rb
<
(
rel15
->
rbSize
-
1
)
&&
pb
->
prg_size
>
0
)
?
(
pb
->
prgs_list
[(
int
)(
rb
+
1
)
/
pb
->
prg_size
].
pm_idx
)
:
-
1
;
// If pmi of next RB and pmi of current RB are the same, we do 2 RB in a row
// if pmi differs, or current rb is the end (rel15->rbSize - 1), than we do 1 RB in a row
const
int
rb_step
=
pmi
==
pmi2
?
2
:
1
;
const
int
re_cnt
=
NR_NB_SC_PER_RB
*
rb_step
;
if
(
pmi
==
0
)
{
// unitary Precoding
if
(
subCarrier
+
re_cnt
<=
symbol_sz
)
{
// RB does not cross DC
if
(
ant
<
rel15
->
nrOfLayers
)
memcpy
(
&
txdataF
[
ant
][
txdataF_offset_per_symbol
+
subCarrier
],
&
txdataF_precoding
[
ant
][
subCarrier
],
re_cnt
*
sizeof
(
**
txdataF
));
else
memset
(
&
txdataF
[
ant
][
txdataF_offset_per_symbol
+
subCarrier
],
0
,
re_cnt
*
sizeof
(
**
txdataF
));
}
else
{
// RB does cross DC
const
int
neg_length
=
symbol_sz
-
subCarrier
;
const
int
pos_length
=
re_cnt
-
neg_length
;
if
(
ant
<
rel15
->
nrOfLayers
)
{
memcpy
(
&
txdataF
[
ant
][
txdataF_offset_per_symbol
+
subCarrier
],
&
txdataF_precoding
[
ant
][
subCarrier
],
neg_length
*
sizeof
(
**
txdataF
));
memcpy
(
&
txdataF
[
ant
][
txdataF_offset_per_symbol
],
&
txdataF_precoding
[
ant
],
pos_length
*
sizeof
(
**
txdataF
));
}
else
{
memset
(
&
txdataF
[
ant
][
txdataF_offset_per_symbol
+
subCarrier
],
0
,
neg_length
*
sizeof
(
**
txdataF
));
memset
(
&
txdataF
[
ant
][
txdataF_offset_per_symbol
],
0
,
pos_length
*
sizeof
(
**
txdataF
));
}
}
subCarrier
+=
re_cnt
;
if
(
subCarrier
>=
symbol_sz
)
{
subCarrier
-=
symbol_sz
;
}
}
else
{
// non-unitary Precoding
AssertFatal
(
frame_parms
->
nb_antennas_tx
>
1
,
"No precoding can be done with a single antenna port
\n
"
);
// get the precoding matrix weights:
nfapi_nr_pm_pdu_t
*
pmi_pdu
=
&
gNB
->
gNB_config
.
pmi_list
.
pmi_pdu
[
pmi
-
1
];
// pmi 0 is identity matrix
AssertFatal
(
pmi
==
pmi_pdu
->
pm_idx
,
"PMI %d doesn't match to the one in precoding matrix %d
\n
"
,
pmi
,
pmi_pdu
->
pm_idx
);
AssertFatal
(
ant
<
pmi_pdu
->
num_ant_ports
,
"Antenna port index %d exceeds precoding matrix AP size %d
\n
"
,
ant
,
pmi_pdu
->
num_ant_ports
);
AssertFatal
(
rel15
->
nrOfLayers
==
pmi_pdu
->
numLayers
,
"Number of layers %d doesn't match to the one in precoding matrix %d
\n
"
,
rel15
->
nrOfLayers
,
pmi_pdu
->
numLayers
);
if
((
subCarrier
+
re_cnt
)
<
symbol_sz
)
{
// within ofdm_symbol_size, use SIMDe
nr_layer_precoder_simd
(
rel15
->
nrOfLayers
,
symbol_sz
,
txdataF_precoding
,
ant
,
pmi_pdu
,
subCarrier
,
re_cnt
,
&
txdataF
[
ant
][
txdataF_offset_per_symbol
]);
subCarrier
+=
re_cnt
;
}
else
{
// crossing ofdm_symbol_size, use simple arithmetic operations
for
(
int
i
=
0
;
i
<
re_cnt
;
i
++
)
{
txdataF
[
ant
][
txdataF_offset_per_symbol
+
subCarrier
]
=
nr_layer_precoder_cm
(
rel15
->
nrOfLayers
,
symbol_sz
,
txdataF_precoding
,
ant
,
pmi_pdu
,
subCarrier
);
#ifdef DEBUG_DLSCH_MAPPING
printf
(
"antenna %d
\t
l %d
\t
subCarrier %d
\t
txdataF: %d %d
\n
"
,
ant
,
l_symbol
,
subCarrier
,
txdataF
[
ant
][
l_symbol
*
symbol_sz
+
subCarrier
+
txdataF_offset
].
r
,
txdataF
[
ant
][
l_symbol
*
symbol_sz
+
subCarrier
+
txdataF_offset
].
i
);
#endif
if
(
++
subCarrier
>=
symbol_sz
)
{
subCarrier
-=
symbol_sz
;
}
}
}
// else{ // crossing ofdm_symbol_size, use simple arithmetic operations
}
// else { // non-unitary Precoding
rb
+=
rb_step
;
}
// RB loop: while(rb < rel15->rbSize)
}
static
int
do_one_dlsch
(
unsigned
char
*
input_ptr
,
PHY_VARS_gNB
*
gNB
,
NR_gNB_DLSCH_t
*
dlsch
,
int
slot
)
static
int
do_one_dlsch
(
unsigned
char
*
input_ptr
,
PHY_VARS_gNB
*
gNB
,
NR_gNB_DLSCH_t
*
dlsch
,
int
slot
)
{
{
const
int16_t
amp
=
gNB
->
TX_AMP
;
const
int16_t
amp
=
gNB
->
TX_AMP
;
...
@@ -618,8 +711,6 @@ static int do_one_dlsch(unsigned char *input_ptr, PHY_VARS_gNB *gNB, NR_gNB_DLSC
...
@@ -618,8 +711,6 @@ static int do_one_dlsch(unsigned char *input_ptr, PHY_VARS_gNB *gNB, NR_gNB_DLSC
start_sc
-=
symbol_sz
;
start_sc
-=
symbol_sz
;
const
uint32_t
txdataF_offset
=
slot
*
frame_parms
->
samples_per_slot_wCP
;
const
uint32_t
txdataF_offset
=
slot
*
frame_parms
->
samples_per_slot_wCP
;
c16_t
txdataF_precoding
[
rel15
->
nrOfLayers
][
NR_NUMBER_OF_SYMBOLS_PER_SLOT
][
symbol_sz
]
__attribute__
((
aligned
(
64
)));
memset
(
txdataF_precoding
,
0
,
sizeof
(
txdataF_precoding
));
#ifdef DEBUG_DLSCH_MAPPING
#ifdef DEBUG_DLSCH_MAPPING
printf
(
"PDSCH resource mapping started (start SC %d
\t
start symbol %d
\t
N_PRB %d
\t
nb_re %d,nb_layers %d)
\n
"
,
printf
(
"PDSCH resource mapping started (start SC %d
\t
start symbol %d
\t
N_PRB %d
\t
nb_re %d,nb_layers %d)
\n
"
,
start_sc
,
start_sc
,
...
@@ -634,12 +725,30 @@ static int do_one_dlsch(unsigned char *input_ptr, PHY_VARS_gNB *gNB, NR_gNB_DLSC
...
@@ -634,12 +725,30 @@ static int do_one_dlsch(unsigned char *input_ptr, PHY_VARS_gNB *gNB, NR_gNB_DLSC
c16_t
mod_dmrs
[(
n_dmrs
+
63
)
&~
63
]
__attribute__
((
aligned
(
64
)));
c16_t
mod_dmrs
[(
n_dmrs
+
63
)
&~
63
]
__attribute__
((
aligned
(
64
)));
unsigned
int
re_beginning_of_symbol
=
0
;
unsigned
int
re_beginning_of_symbol
=
0
;
start_meas
(
&
gNB
->
dlsch_resource_mapping_stats
);
int
layerSz2
=
(
layerSz
+
63
)
&
~
63
;
int
layerSz2
=
(
layerSz
+
63
)
&
~
63
;
c16_t
tx_layers
[
rel15
->
nrOfLayers
][
layerSz2
]
__attribute__
((
aligned
(
64
)));
c16_t
tx_layers
[
rel15
->
nrOfLayers
][
layerSz2
]
__attribute__
((
aligned
(
64
)));
memset
(
tx_layers
,
0
,
sizeof
(
tx_layers
));
memset
(
tx_layers
,
0
,
sizeof
(
tx_layers
));
nr_layer_mapping
(
rel15
->
NrOfCodewords
,
encoded_length
,
mod_symbs
,
rel15
->
nrOfLayers
,
layerSz2
,
nb_re
,
tx_layers
);
nr_layer_mapping
(
rel15
->
NrOfCodewords
,
encoded_length
,
mod_symbs
,
rel15
->
nrOfLayers
,
layerSz2
,
nb_re
,
tx_layers
);
/// Layer Precoding and Antenna port mapping
// tx_layers 1-8 are mapped on antenna ports 1000-1007
// The precoding info is supported by nfapi such as num_prgs, prg_size, prgs_list and pm_idx
// The same precoding matrix is applied on prg_size RBs, Thus
// pmi = prgs_list[rbidx/prg_size].pm_idx, rbidx =0,...,rbSize-1
// The Precoding matrix:
// The Codebook Type I
start_meas
(
&
gNB
->
dlsch_precoding_stats
);
nfapi_nr_tx_precoding_and_beamforming_t
*
pb
=
&
rel15
->
precodingAndBeamforming
;
// beam number in multi-beam scenario (concurrent beams)
int
bitmap
=
SL_to_bitmap
(
rel15
->
StartSymbolIndex
,
rel15
->
NrOfSymbols
);
int
beam_nb
=
beam_index_allocation
(
pb
->
prgs_list
[
0
].
dig_bf_interface_list
[
0
].
beam_idx
,
&
gNB
->
common_vars
,
slot
,
frame_parms
->
symbols_per_slot
,
bitmap
);
c16_t
**
txdataF
=
gNB
->
common_vars
.
txdataF
[
beam_nb
];
// Loop Over OFDM symbols:
// Loop Over OFDM symbols:
for
(
int
l_symbol
=
rel15
->
StartSymbolIndex
;
l_symbol
<
rel15
->
StartSymbolIndex
+
rel15
->
NrOfSymbols
;
l_symbol
++
)
{
for
(
int
l_symbol
=
rel15
->
StartSymbolIndex
;
l_symbol
<
rel15
->
StartSymbolIndex
+
rel15
->
NrOfSymbols
;
l_symbol
++
)
{
int
l_prime
=
0
;
// single symbol layer 0
int
l_prime
=
0
;
// single symbol layer 0
...
@@ -685,13 +794,14 @@ static int do_one_dlsch(unsigned char *input_ptr, PHY_VARS_gNB *gNB, NR_gNB_DLSC
...
@@ -685,13 +794,14 @@ static int do_one_dlsch(unsigned char *input_ptr, PHY_VARS_gNB *gNB, NR_gNB_DLSC
if
(
rel15
->
rnti
!=
SI_RNTI
)
if
(
rel15
->
rnti
!=
SI_RNTI
)
dmrs_idx
+=
rel15
->
BWPStart
;
dmrs_idx
+=
rel15
->
BWPStart
;
dmrs_idx
*=
dmrs_Type
==
NFAPI_NR_DMRS_TYPE1
?
6
:
4
;
dmrs_idx
*=
dmrs_Type
==
NFAPI_NR_DMRS_TYPE1
?
6
:
4
;
c16_t
txdataF_precoding
[
rel15
->
nrOfLayers
][
symbol_sz
]
__attribute__
((
aligned
(
64
)));
int
layer_sz
=
0
;
int
layer_sz
=
0
;
for
(
int
layer
=
0
;
layer
<
rel15
->
nrOfLayers
;
layer
++
)
{
for
(
int
layer
=
0
;
layer
<
rel15
->
nrOfLayers
;
layer
++
)
{
layer_sz
=
do_onelayer
(
frame_parms
,
layer_sz
=
do_onelayer
(
frame_parms
,
slot
,
slot
,
rel15
,
rel15
,
layer
,
layer
,
txdataF_precoding
[
layer
]
[
l_symbol
]
,
txdataF_precoding
[
layer
],
tx_layers
[
layer
]
+
re_beginning_of_symbol
,
tx_layers
[
layer
]
+
re_beginning_of_symbol
,
start_sc
,
start_sc
,
symbol_sz
,
symbol_sz
,
...
@@ -705,123 +815,13 @@ static int do_one_dlsch(unsigned char *input_ptr, PHY_VARS_gNB *gNB, NR_gNB_DLSC
...
@@ -705,123 +815,13 @@ static int do_one_dlsch(unsigned char *input_ptr, PHY_VARS_gNB *gNB, NR_gNB_DLSC
mod_dmrs
+
dmrs_idx
);
mod_dmrs
+
dmrs_idx
);
}
// layer loop
}
// layer loop
re_beginning_of_symbol
+=
layer_sz
;
re_beginning_of_symbol
+=
layer_sz
;
}
// symbol loop
stop_meas
(
&
gNB
->
dlsch_resource_mapping_stats
);
stop_meas
(
&
gNB
->
dlsch_resource_mapping_stats
);
/// Layer Precoding and Antenna port mapping
// tx_layers 1-8 are mapped on antenna ports 1000-1007
// The precoding info is supported by nfapi such as num_prgs, prg_size, prgs_list and pm_idx
// The same precoding matrix is applied on prg_size RBs, Thus
// pmi = prgs_list[rbidx/prg_size].pm_idx, rbidx =0,...,rbSize-1
// The Precoding matrix:
// The Codebook Type I
start_meas
(
&
gNB
->
dlsch_precoding_stats
);
nfapi_nr_tx_precoding_and_beamforming_t
*
pb
=
&
rel15
->
precodingAndBeamforming
;
// beam number in multi-beam scenario (concurrent beams)
int
bitmap
=
SL_to_bitmap
(
rel15
->
StartSymbolIndex
,
rel15
->
NrOfSymbols
);
int
beam_nb
=
beam_index_allocation
(
pb
->
prgs_list
[
0
].
dig_bf_interface_list
[
0
].
beam_idx
,
&
gNB
->
common_vars
,
slot
,
frame_parms
->
symbols_per_slot
,
bitmap
);
c16_t
**
txdataF
=
gNB
->
common_vars
.
txdataF
[
beam_nb
];
for
(
int
ant
=
0
;
ant
<
frame_parms
->
nb_antennas_tx
;
ant
++
)
{
for
(
int
ant
=
0
;
ant
<
frame_parms
->
nb_antennas_tx
;
ant
++
)
{
for
(
int
l_symbol
=
rel15
->
StartSymbolIndex
;
l_symbol
<
rel15
->
StartSymbolIndex
+
rel15
->
NrOfSymbols
;
l_symbol
++
)
{
uint16_t
subCarrier
=
start_sc
;
const
size_t
txdataF_offset_per_symbol
=
l_symbol
*
symbol_sz
+
txdataF_offset
;
const
size_t
txdataF_offset_per_symbol
=
l_symbol
*
symbol_sz
+
txdataF_offset
;
int
rb
=
0
;
do_txdataF
(
txdataF
,
symbol_sz
,
txdataF_precoding
,
gNB
,
rel15
,
ant
,
start_sc
,
txdataF_offset_per_symbol
);
while
(
rb
<
rel15
->
rbSize
)
{
// get pmi info
const
int
pmi
=
(
pb
->
num_prgs
>
0
&&
pb
->
prg_size
>
0
)
?
(
pb
->
prgs_list
[(
int
)
rb
/
pb
->
prg_size
].
pm_idx
)
:
0
;
const
int
pmi2
=
(
rb
<
(
rel15
->
rbSize
-
1
)
&&
pb
->
prg_size
>
0
)
?
(
pb
->
prgs_list
[(
int
)(
rb
+
1
)
/
pb
->
prg_size
].
pm_idx
)
:
-
1
;
// If pmi of next RB and pmi of current RB are the same, we do 2 RB in a row
// if pmi differs, or current rb is the end (rel15->rbSize - 1), than we do 1 RB in a row
const
int
rb_step
=
pmi
==
pmi2
?
2
:
1
;
const
int
re_cnt
=
NR_NB_SC_PER_RB
*
rb_step
;
if
(
pmi
==
0
)
{
// unitary Precoding
if
(
subCarrier
+
re_cnt
<=
symbol_sz
)
{
// RB does not cross DC
if
(
ant
<
rel15
->
nrOfLayers
)
memcpy
(
&
txdataF
[
ant
][
txdataF_offset_per_symbol
+
subCarrier
],
&
txdataF_precoding
[
ant
][
l_symbol
][
subCarrier
],
re_cnt
*
sizeof
(
**
txdataF
));
else
memset
(
&
txdataF
[
ant
][
txdataF_offset_per_symbol
+
subCarrier
],
0
,
re_cnt
*
sizeof
(
**
txdataF
));
}
else
{
// RB does cross DC
const
int
neg_length
=
symbol_sz
-
subCarrier
;
const
int
pos_length
=
re_cnt
-
neg_length
;
if
(
ant
<
rel15
->
nrOfLayers
)
{
memcpy
(
&
txdataF
[
ant
][
txdataF_offset_per_symbol
+
subCarrier
],
&
txdataF_precoding
[
ant
][
l_symbol
][
subCarrier
],
neg_length
*
sizeof
(
**
txdataF
));
memcpy
(
&
txdataF
[
ant
][
txdataF_offset_per_symbol
],
&
txdataF_precoding
[
ant
][
l_symbol
],
pos_length
*
sizeof
(
**
txdataF
));
}
else
{
memset
(
&
txdataF
[
ant
][
txdataF_offset_per_symbol
+
subCarrier
],
0
,
neg_length
*
sizeof
(
**
txdataF
));
memset
(
&
txdataF
[
ant
][
txdataF_offset_per_symbol
],
0
,
pos_length
*
sizeof
(
**
txdataF
));
}
}
}
}
subCarrier
+=
re_cnt
;
if
(
subCarrier
>=
symbol_sz
)
{
subCarrier
-=
symbol_sz
;
}
}
else
{
// non-unitary Precoding
AssertFatal
(
frame_parms
->
nb_antennas_tx
>
1
,
"No precoding can be done with a single antenna port
\n
"
);
// get the precoding matrix weights:
nfapi_nr_pm_pdu_t
*
pmi_pdu
=
&
gNB
->
gNB_config
.
pmi_list
.
pmi_pdu
[
pmi
-
1
];
// pmi 0 is identity matrix
AssertFatal
(
pmi
==
pmi_pdu
->
pm_idx
,
"PMI %d doesn't match to the one in precoding matrix %d
\n
"
,
pmi
,
pmi_pdu
->
pm_idx
);
AssertFatal
(
ant
<
pmi_pdu
->
num_ant_ports
,
"Antenna port index %d exceeds precoding matrix AP size %d
\n
"
,
ant
,
pmi_pdu
->
num_ant_ports
);
AssertFatal
(
rel15
->
nrOfLayers
==
pmi_pdu
->
numLayers
,
"Number of layers %d doesn't match to the one in precoding matrix %d
\n
"
,
rel15
->
nrOfLayers
,
pmi_pdu
->
numLayers
);
if
((
subCarrier
+
re_cnt
)
<
symbol_sz
)
{
// within ofdm_symbol_size, use SIMDe
nr_layer_precoder_simd
(
rel15
->
nrOfLayers
,
NR_SYMBOLS_PER_SLOT
,
symbol_sz
,
txdataF_precoding
,
ant
,
pmi_pdu
,
l_symbol
,
subCarrier
,
re_cnt
,
&
txdataF
[
ant
][
txdataF_offset_per_symbol
]);
subCarrier
+=
re_cnt
;
}
else
{
// crossing ofdm_symbol_size, use simple arithmetic operations
for
(
int
i
=
0
;
i
<
re_cnt
;
i
++
)
{
txdataF
[
ant
][
txdataF_offset_per_symbol
+
subCarrier
]
=
nr_layer_precoder_cm
(
rel15
->
nrOfLayers
,
NR_SYMBOLS_PER_SLOT
,
symbol_sz
,
txdataF_precoding
,
ant
,
pmi_pdu
,
l_symbol
,
subCarrier
);
#ifdef DEBUG_DLSCH_MAPPING
printf
(
"antenna %d
\t
l %d
\t
subCarrier %d
\t
txdataF: %d %d
\n
"
,
ant
,
l_symbol
,
subCarrier
,
txdataF
[
ant
][
l_symbol
*
symbol_sz
+
subCarrier
+
txdataF_offset
].
r
,
txdataF
[
ant
][
l_symbol
*
symbol_sz
+
subCarrier
+
txdataF_offset
].
i
);
#endif
if
(
++
subCarrier
>=
symbol_sz
)
{
subCarrier
-=
symbol_sz
;
}
}
}
// else{ // crossing ofdm_symbol_size, use simple arithmetic operations
}
// else { // non-unitary Precoding
rb
+=
rb_step
;
}
// RB loop: while(rb < rel15->rbSize)
}
// symbol loop
}
// port loop
stop_meas
(
&
gNB
->
dlsch_precoding_stats
);
stop_meas
(
&
gNB
->
dlsch_precoding_stats
);
/* output and its parts for each dlsch should be aligned on 64 bytes
/* output and its parts for each dlsch should be aligned on 64 bytes
...
...
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