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lizhongxiao
OpenXG-RAN
Commits
70270250
Commit
70270250
authored
1 year ago
by
Roberto Louro Magueta
Committed by
rmagueta
1 year ago
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Select Nonlinear ML or Linear MMSE receiver
parent
917ff8e9
Changes
1
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1 changed file
with
9 additions
and
3 deletions
+9
-3
openair1/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c
openair1/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c
+9
-3
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openair1/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c
View file @
70270250
...
...
@@ -1899,9 +1899,6 @@ void nr_rx_pusch(PHY_VARS_gNB *gNB,
unsigned
char
harq_pid
)
{
// Temporary flag: (true) ML receiver, (false) MMSE receiver
bool
ml_rx
=
true
;
uint8_t
aarx
,
aatx
;
uint32_t
nb_re_pusch
,
bwp_start_subcarrier
;
int
avgs
=
0
;
...
...
@@ -2002,6 +1999,15 @@ void nr_rx_pusch(PHY_VARS_gNB *gNB,
uint32_t
rxdataF_ext_offset
=
0
;
uint8_t
shift_ch_ext
=
rel15_ul
->
nrOfLayers
>
1
?
log2_approx
(
max_ch
>>
11
)
:
0
;
// Flag to select the receiver: (true) Nonlinear ML receiver, (false) Linear MMSE receiver
// By default, we are using the Nonlinear ML receiver, except
// - for 256QAM as Nonlinear ML receiver is not implemented for 256QAM
// - for 64QAM as Nonlinear ML receiver requires more processing time than MMSE, and many machines are not powerful enough
bool
ml_rx
=
true
;
if
(
rel15_ul
->
nrOfLayers
!=
2
||
rel15_ul
->
qam_mod_order
>=
6
)
{
ml_rx
=
false
;
}
int
ad_shift
=
0
;
if
(
rel15_ul
->
nrOfLayers
==
1
)
{
ad_shift
=
1
+
log2_approx
(
frame_parms
->
nb_antennas_rx
>>
2
);
...
...
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