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wangjie
OpenXG-RAN
Commits
ea72bde1
Commit
ea72bde1
authored
3 years ago
by
Thomas Schlichter
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fix DL channel estimation around DC for DMRS type 1 and muliple antenna ports
bug found and fix proposed by: Francesco Mani
parent
ae3e3c5f
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openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
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openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
View file @
ea72bde1
...
...
@@ -942,7 +942,7 @@ int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
// check if PRB crosses DC and improve estimates around DC
if
((
bwp_start_subcarrier
<
ue
->
frame_parms
.
ofdm_symbol_size
)
&&
(
bwp_start_subcarrier
+
nb_rb_pdsch
*
12
>=
ue
->
frame_parms
.
ofdm_symbol_size
))
{
dl_ch
=
(
int16_t
*
)
&
dl_ch_estimates
[
aarx
][
ch_offset
];
dl_ch
=
(
int16_t
*
)
&
dl_ch_estimates
[
p
*
ue
->
frame_parms
.
nb_antennas_rx
+
aarx
][
ch_offset
];
uint16_t
idxDC
=
2
*
(
ue
->
frame_parms
.
ofdm_symbol_size
-
bwp_start_subcarrier
);
uint16_t
idxPil
=
idxDC
/
2
;
re_offset
=
k
;
...
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