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Add UL time channel estimation based on SRS

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This commit is contained in:
rmagueta
2021-12-15 17:02:57 +00:00
parent ecd09b3068
commit 8aac96062a
8 changed files with 84 additions and 65 deletions
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common/utils/T/T_messages.txt
+6 -2
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@@ -93,8 +93,12 @@ ID = GNB_PHY_PUCCH_PUSCH_IQ
DESC = gNodeB input data in the frequency domain for a slot where some PUCCH or PUSCH detection was done
GROUP = ALL:PHY:GRAPHIC:HEAVY:GNB
FORMAT = int,frame : int,slot : buffer,rxdataF
ID = GNB_PHY_UL_CHANNEL_ESTIMATE
DESC = gNodeB channel estimation in the time/frequency domain
ID = GNB_PHY_UL_FREQ_CHANNEL_ESTIMATE
DESC = gNodeB channel estimation in the frequency domain
GROUP = ALL:PHY:GRAPHIC:HEAVY:GNB
FORMAT = int,gNB_ID : int,rnti : int,frame : int,subframe : int,antenna : buffer,chest_t
ID = GNB_PHY_UL_TIME_CHANNEL_ESTIMATE
DESC = gNodeB channel estimation in the time domain
GROUP = ALL:PHY:GRAPHIC:HEAVY:GNB
FORMAT = int,gNB_ID : int,rnti : int,frame : int,subframe : int,antenna : buffer,chest_t
ID = GNB_PHY_PRACH_INPUT_SIGNAL
common/utils/T/tracer/gnb.c
+22 -5
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@@ -18,12 +18,14 @@ int next_ue_id;
typedef struct {
widget *pucch_pusch_iq_plot;
widget *ul_freq_estimate_ue_xy_plot;
widget *ul_time_estimate_ue_xy_plot;
widget *current_ue_label;
widget *current_ue_button;
widget *prev_ue_button;
widget *next_ue_button;
logger *pucch_pusch_iq_logger;
logger *ul_freq_estimate_ue_logger;
logger *ul_time_estimate_ue_logger;
} gnb_gui;
typedef struct {
@@ -93,6 +95,9 @@ static void set_current_ue(gui *g, gnb_data *e, int ue)
sprintf(s, "UL channel estimation in frequency domain [UE %d]", ue);
xy_plot_set_title(g, e->e->ul_freq_estimate_ue_xy_plot, s);
sprintf(s, "UL channel estimation in time domain [UE %d]", ue);
xy_plot_set_title(g, e->e->ul_time_estimate_ue_xy_plot, s);
}
void reset_ue_ids(void)
@@ -141,7 +146,7 @@ static void gnb_main_gui(gnb_gui *e, gui *g, event_handler *h, void *database, g
logger *l;
view *v;
main_window = new_toplevel_window(g, 1050, 230, "gNB tracer");
main_window = new_toplevel_window(g, 1500, 230, "gNB tracer");
top_container = new_container(g, VERTICAL);
widget_add_child(g, main_window, top_container, -1);
@@ -179,17 +184,28 @@ static void gnb_main_gui(gnb_gui *e, gui *g, event_handler *h, void *database, g
logger_add_view(l, v);
e->pucch_pusch_iq_logger = l;
/* UL estimated channel */
w = new_xy_plot(g, 600, 200, "", 50);
/* UL channel estimation in frequency domain */
w = new_xy_plot(g, 490, 200, "", 50);
e->ul_freq_estimate_ue_xy_plot = w;
widget_add_child(g, line, w, -1);
xy_plot_set_range(g, w, 0, 100*10, -10, 80);
l = new_framelog(h, database, "GNB_PHY_UL_CHANNEL_ESTIMATE", "subframe", "chest_t");
l = new_framelog(h, database, "GNB_PHY_UL_FREQ_CHANNEL_ESTIMATE", "subframe", "chest_t");
framelog_set_update_only_at_sf9(l, 0);
v = new_view_xy(100*10, 10, g, w, new_color(g, "#0c0c72"), XY_LOOP_MODE);
logger_add_view(l, v);
e->ul_freq_estimate_ue_logger = l;
/* UL channel estimation in time domain */
w = new_xy_plot(g, 490, 200, "", 50);
e->ul_time_estimate_ue_xy_plot = w;
widget_add_child(g, line, w, -1);
xy_plot_set_range(g, w, 0, 100*10, -10, 80);
l = new_framelog(h, database, "GNB_PHY_UL_TIME_CHANNEL_ESTIMATE", "subframe", "chest_t");
framelog_set_update_only_at_sf9(l, 0);
v = new_view_xy(100*10, 10, g, w, new_color(g, "#0c0c72"), XY_LOOP_MODE);
logger_add_view(l, v);
e->ul_time_estimate_ue_logger = l;
set_current_ue(g, ed, ed->ue);
register_notifier(g, "click", e->current_ue_button, click, ed);
register_notifier(g, "click", e->prev_ue_button, click, ed);
@@ -233,7 +249,8 @@ int main(int n, char **v)
h = new_handler(database);
on_off(database, "GNB_PHY_PUCCH_PUSCH_IQ", is_on, 1);
on_off(database, "GNB_PHY_UL_CHANNEL_ESTIMATE", is_on, 1);
on_off(database, "GNB_PHY_UL_FREQ_CHANNEL_ESTIMATE", is_on, 1);
on_off(database, "GNB_PHY_UL_TIME_CHANNEL_ESTIMATE", is_on, 1);
gnb_data.ue = 0;
gnb_data.e = ⪚
openair1/PHY/INIT/nr_init.c
+2
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@@ -202,10 +202,12 @@ int phy_init_nr_gNB(PHY_VARS_gNB *gNB,
gNB->nr_srs_info[id]->srs_received_signal = (int32_t **)malloc16(Prx*sizeof(int32_t*));
gNB->nr_srs_info[id]->srs_ls_estimated_channel = (int32_t **)malloc16(Prx*sizeof(int32_t*));
gNB->nr_srs_info[id]->srs_estimated_channel_freq = (int32_t **)malloc16(Prx*sizeof(int32_t*));
gNB->nr_srs_info[id]->srs_estimated_channel_time = (int32_t **)malloc16(Prx*sizeof(int32_t*));
for (i=0;i<Prx;i++){
gNB->nr_srs_info[id]->srs_received_signal[i] = (int32_t*)malloc16_clear(fp->samples_per_frame*sizeof(int32_t));
gNB->nr_srs_info[id]->srs_ls_estimated_channel[i] = (int32_t*)malloc16_clear(fp->samples_per_frame*sizeof(int32_t));
gNB->nr_srs_info[id]->srs_estimated_channel_freq[i] = (int32_t*)malloc16_clear(fp->samples_per_frame*sizeof(int32_t));
gNB->nr_srs_info[id]->srs_estimated_channel_time[i] = (int32_t*)malloc16_clear(fp->samples_per_frame*sizeof(int32_t));
}
}
openair1/PHY/INIT/nr_init_ue.c
+2
View File
@@ -329,10 +329,12 @@ int init_nr_ue_signal(PHY_VARS_NR_UE *ue,
ue->nr_srs_info->srs_received_signal = (int32_t **)malloc16( fp->nb_antennas_rx*sizeof(int32_t *) );
ue->nr_srs_info->srs_ls_estimated_channel = (int32_t **)malloc16( fp->nb_antennas_rx*sizeof(int32_t *) );
ue->nr_srs_info->srs_estimated_channel_freq = (int32_t **)malloc16( fp->nb_antennas_rx*sizeof(int32_t *) );
ue->nr_srs_info->srs_estimated_channel_time = (int32_t **)malloc16( fp->nb_antennas_rx*sizeof(int32_t *) );
for (i=0; i<fp->nb_antennas_rx; i++) {
ue->nr_srs_info->srs_received_signal[i] = (int32_t *) malloc16_clear( (2*(fp->samples_per_frame)+2048)*sizeof(int32_t) );
ue->nr_srs_info->srs_ls_estimated_channel[i] = (int32_t *) malloc16_clear( (2*(fp->samples_per_frame)+2048)*sizeof(int32_t) );
ue->nr_srs_info->srs_estimated_channel_freq[i] = (int32_t *) malloc16_clear( (2*(fp->samples_per_frame)+2048)*sizeof(int32_t) );
ue->nr_srs_info->srs_estimated_channel_time[i] = (int32_t *) malloc16_clear( (2*(fp->samples_per_frame)+2048)*sizeof(int32_t) );
}
if (abstraction_flag == 0) {
openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
+45 -57
View File
@@ -41,6 +41,41 @@
#define NO_INTERP 1
#define dBc(x,y) (dB_fixed(((int32_t)(x))*(x) + ((int32_t)(y))*(y)))
void freq2time(uint16_t ofdm_symbol_size,
int16_t *freq_signal,
int16_t *time_signal) {
switch (ofdm_symbol_size) {
case 128:
idft(IDFT_128, freq_signal, time_signal, 1);
break;
case 256:
idft(IDFT_256, freq_signal, time_signal, 1);
break;
case 512:
idft(IDFT_512, freq_signal, time_signal, 1);
break;
case 1024:
idft(IDFT_1024, freq_signal, time_signal, 1);
break;
case 1536:
idft(IDFT_1536, freq_signal, time_signal, 1);
break;
case 2048:
idft(IDFT_2048, freq_signal, time_signal, 1);
break;
case 4096:
idft(IDFT_4096, freq_signal, time_signal, 1);
break;
case 8192:
idft(IDFT_8192, freq_signal, time_signal, 1);
break;
default:
idft(IDFT_512, freq_signal, time_signal, 1);
break;
}
}
int nr_pusch_channel_estimation(PHY_VARS_gNB *gNB,
unsigned char Ns,
unsigned short p,
@@ -899,63 +934,9 @@ int nr_pusch_channel_estimation(PHY_VARS_gNB *gNB,
#endif
// Convert to time domain
switch (gNB->frame_parms.ofdm_symbol_size) {
case 128:
idft(IDFT_128,(int16_t*) &ul_ch_estimates[aarx][symbol_offset],
(int16_t*) ul_ch_estimates_time[aarx],
1);
break;
case 256:
idft(IDFT_256,(int16_t*) &ul_ch_estimates[aarx][symbol_offset],
(int16_t*) ul_ch_estimates_time[aarx],
1);
break;
case 512:
idft(IDFT_512,(int16_t*) &ul_ch_estimates[aarx][symbol_offset],
(int16_t*) ul_ch_estimates_time[aarx],
1);
break;
case 1024:
idft(IDFT_1024,(int16_t*) &ul_ch_estimates[aarx][symbol_offset],
(int16_t*) ul_ch_estimates_time[aarx],
1);
break;
case 1536:
idft(IDFT_1536,(int16_t*) &ul_ch_estimates[aarx][symbol_offset],
(int16_t*) ul_ch_estimates_time[aarx],
1);
break;
case 2048:
idft(IDFT_2048,(int16_t*) &ul_ch_estimates[aarx][symbol_offset],
(int16_t*) ul_ch_estimates_time[aarx],
1);
break;
case 4096:
idft(IDFT_4096,(int16_t*) &ul_ch_estimates[aarx][symbol_offset],
(int16_t*) ul_ch_estimates_time[aarx],
1);
break;
case 8192:
idft(IDFT_8192,(int16_t*) &ul_ch_estimates[aarx][symbol_offset],
(int16_t*) ul_ch_estimates_time[aarx],
1);
break;
default:
idft(IDFT_512,(int16_t*) &ul_ch_estimates[aarx][symbol_offset],
(int16_t*) ul_ch_estimates_time[aarx],
1);
break;
}
freq2time(gNB->frame_parms.ofdm_symbol_size,
(int16_t*) &ul_ch_estimates[aarx][symbol_offset],
(int16_t*) ul_ch_estimates_time[aarx]);
}
#ifdef DEBUG_CH
@@ -1111,6 +1092,7 @@ int nr_srs_channel_estimation(PHY_VARS_gNB *gNB,
int32_t *srs_generated_signal,
int32_t **srs_received_signal,
int32_t **srs_estimated_channel_freq,
int32_t **srs_estimated_channel_time,
uint32_t *noise_power) {
if(nr_srs_info->n_symbs==0) {
@@ -1131,6 +1113,7 @@ int nr_srs_channel_estimation(PHY_VARS_gNB *gNB,
memset(srs_ls_estimated_channel[ant], 0, frame_parms->samples_per_frame*sizeof(int32_t));
memset(srs_estimated_channel_freq[ant], 0, frame_parms->samples_per_frame*sizeof(int32_t));
memset(srs_estimated_channel_time[ant], 0, frame_parms->samples_per_frame*sizeof(int32_t));
int16_t *srs_estimated_channel16 = (int16_t *)&srs_estimated_channel_freq[ant][nr_srs_info->subcarrier_idx[0]];
@@ -1213,6 +1196,11 @@ int nr_srs_channel_estimation(PHY_VARS_gNB *gNB,
prev_ls_estimated[0], prev_ls_estimated[1]);
#endif
}
// Convert to time domain
freq2time(gNB->frame_parms.ofdm_symbol_size,
(int16_t*) srs_estimated_channel_freq[ant],
(int16_t*) srs_estimated_channel_time[ant]);
}
*noise_power = calc_power(noise_real,frame_parms->nb_antennas_rx*nr_srs_info->n_symbs)
openair1/PHY/NR_ESTIMATION/nr_ul_estimation.h
+1
View File
@@ -71,5 +71,6 @@ int nr_srs_channel_estimation(PHY_VARS_gNB *gNB,
int32_t *srs_generated_signal,
int32_t **srs_received_signal,
int32_t **srs_estimated_channel_freq,
int32_t **srs_estimated_channel_time,
uint32_t *noise_power);
#endif
openair1/PHY/defs_nr_common.h
+1
View File
@@ -248,6 +248,7 @@ typedef struct {
int32_t **srs_received_signal;
int32_t **srs_ls_estimated_channel;
int32_t **srs_estimated_channel_freq;
int32_t **srs_estimated_channel_time;
uint32_t *noise_power;
} nr_srs_info_t;
openair1/SCHED_NR/phy_procedures_nr_gNB.c
+5 -1
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@@ -810,11 +810,15 @@ int phy_procedures_gNB_uespec_RX(PHY_VARS_gNB *gNB, int frame_rx, int slot_rx) {
gNB->nr_srs_info[i]->srs_generated_signal,
gNB->nr_srs_info[i]->srs_received_signal,
gNB->nr_srs_info[i]->srs_estimated_channel_freq,
gNB->nr_srs_info[i]->srs_estimated_channel_time,
gNB->nr_srs_info[i]->noise_power);
T(T_GNB_PHY_UL_CHANNEL_ESTIMATE, T_INT(0), T_INT(srs_pdu->rnti), T_INT(frame_rx), T_INT(slot_rx%10), T_INT(0),
T(T_GNB_PHY_UL_FREQ_CHANNEL_ESTIMATE, T_INT(0), T_INT(srs_pdu->rnti), T_INT(frame_rx), T_INT(slot_rx%10), T_INT(0),
T_BUFFER(gNB->nr_srs_info[i]->srs_estimated_channel_freq[0], 100 * 4));
T(T_GNB_PHY_UL_TIME_CHANNEL_ESTIMATE, T_INT(0), T_INT(srs_pdu->rnti), T_INT(frame_rx), T_INT(slot_rx%10), T_INT(0),
T_BUFFER(gNB->nr_srs_info[i]->srs_estimated_channel_time[0], 100 * 4));
srs->active = 0;
}
}