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use common channel level for DCI reception

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This commit is contained in:
francescomani
2025-08-19 16:19:48 +02:00
parent a95a32c2f6
commit 65d0fb152e
1 changed files with 7 additions and 16 deletions
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openair1/PHY/NR_UE_TRANSPORT/dci_nr.c
+7 -16
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@@ -36,6 +36,7 @@
#include "PHY/CODING/nrPolar_tools/nr_polar_dci_defs.h"
#include "PHY/phy_extern.h"
#include "PHY/CODING/coding_extern.h"
#include "PHY/nr_phy_common/inc/nr_phy_common.h"
#include "PHY/sse_intrin.h"
#include "common/utils/nr/nr_common.h"
#include <openair1/PHY/TOOLS/phy_scope_interface.h>
@@ -197,20 +198,6 @@ static void nr_pdcch_llr(uint32_t sz, c16_t *rxF, c16_t *llr)
}
}
//compute average channel_level on each (TX,RX) antenna pair
static int32_t nr_pdcch_channel_level(int nb_re, int arraySz, c16_t dl_ch_estimates_ext[][arraySz], int nb_antennas_rx)
{
int32_t avgs = 0;
for (int aarx = 0; aarx < nb_antennas_rx; aarx++) {
simde__m128i *dl_ch128 = (simde__m128i *)&dl_ch_estimates_ext[aarx];
// compute average level
// if nb_re is not %4, some samples are missed inside simde_mm_average, so let's discard it
int32_t tmp = simde_mm_average(dl_ch128, nb_re & ~3, 0, nb_re & ~3);
avgs = cmax(avgs, tmp);
}
return avgs;
}
// This function will extract the mapped DM-RS PDCCH REs as per 38.211 Section 7.4.1.3.2 (Mapping to physical resources)
static void nr_pdcch_extract_rbs_single(uint32_t rxdataF_sz,
uint32_t coreset_nbr_rb,
@@ -372,9 +359,13 @@ void nr_rx_pdcch(PHY_VARS_NR_UE *ue,
rel15->coreset.frequency_domain_resource,
rel15->BWPStart);
LOG_D(NR_PHY_DCI, "in nr_pdcch_channel_level(dl_ch_estimates_ext -> dl_ch_estimates_ext)\n");
LOG_D(NR_PHY_DCI, "in channel level function (dl_ch_estimates_ext -> dl_ch_estimates_ext)\n");
// compute channel level based on ofdm symbol 0
int32_t avgs = nr_pdcch_channel_level(n_rb, arraySz, pdcch_dl_ch_estimates_ext, antRx);
int avg[antRx];
nr_channel_level(0, arraySz, pdcch_dl_ch_estimates_ext, antRx, 1, avg, n_rb);
int avgs = avg[0];
for (int i = 1; i < antRx; i++)
avgs = cmax(avgs, avg[i]);
uint8_t log2_maxh = (log2_approx(avgs) / 2) + 5; //+antRx;
#ifdef UE_DEBUG_TRACE