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improved gain control when not synched

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This commit is contained in:
Florian Kaltenberger
2016-02-04 14:42:16 +01:00
parent 39e497b80d
commit 1769eca225
4 changed files with 55 additions and 40 deletions
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openair1/PHY/LTE_ESTIMATION/adjust_gain.c
+4 -11
View File
@@ -38,23 +38,16 @@ extern int card;
#endif
void
phy_adjust_gain (PHY_VARS_UE *phy_vars_ue, uint8_t eNB_id)
phy_adjust_gain (PHY_VARS_UE *phy_vars_ue, uint32_t rx_power_fil_dB, uint8_t eNB_id)
{
uint16_t rx_power_fil_dB;
#ifdef EXMIMO
exmimo_config_t *p_exmimo_config = openair0_exmimo_pci[card].exmimo_config_ptr;
uint16_t i;
#endif
int rssi;
rssi = dB_fixed(phy_vars_ue->PHY_measurements.rssi);
if (rssi>0) rx_power_fil_dB = rssi;
else rx_power_fil_dB = phy_vars_ue->PHY_measurements.rx_power_avg_dB[eNB_id];
LOG_D(PHY,"Gain control: rssi %d (%d,%d)\n",
rssi,
LOG_I(PHY,"Gain control: rssi %d (%d,%d)\n",
rx_power_fil_dB,
phy_vars_ue->PHY_measurements.rssi,
phy_vars_ue->PHY_measurements.rx_power_avg_dB[eNB_id]
);
@@ -87,7 +80,7 @@ phy_adjust_gain (PHY_VARS_UE *phy_vars_ue, uint8_t eNB_id)
phy_vars_ue->rx_total_gain_dB = MIN_RF_GAIN;
}
LOG_D(PHY,"Gain control: rx_total_gain_dB = %d (max %d,rxpf %d)\n",phy_vars_ue->rx_total_gain_dB,MAX_RF_GAIN,rx_power_fil_dB);
LOG_I(PHY,"Gain control: rx_total_gain_dB = %d (max %d,rxpf %d)\n",phy_vars_ue->rx_total_gain_dB,MAX_RF_GAIN,rx_power_fil_dB);
#ifdef EXMIMO
openair1/PHY/LTE_ESTIMATION/defs.h
+1
View File
@@ -213,6 +213,7 @@ int8_t set_RSRQ_filtered(module_id_t Mod_id,uint8_t CC_id,uint8_t eNB_index,floa
//! Automatic gain control
void phy_adjust_gain (PHY_VARS_UE *phy_vars_ue,
uint32_t rx_power_fil_dB,
unsigned char eNB_id);
int lte_ul_channel_estimation(PHY_VARS_eNB *phy_vars_eNB,
openair1/PHY/LTE_TRANSPORT/initial_sync.c
+48 -27
View File
@@ -280,7 +280,6 @@ int initial_sync(PHY_VARS_UE *phy_vars_ue, runmode_t mode)
uint8_t flip_fdd_ncp,flip_fdd_ecp,flip_tdd_ncp,flip_tdd_ecp;
// uint16_t Nid_cell_fdd_ncp=0,Nid_cell_fdd_ecp=0,Nid_cell_tdd_ncp=0,Nid_cell_tdd_ecp=0;
LTE_DL_FRAME_PARMS *frame_parms = &phy_vars_ue->lte_frame_parms;
int i;
int ret=-1;
int aarx,rx_power=0;
/*#ifdef OAI_USRP
@@ -316,32 +315,6 @@ int initial_sync(PHY_VARS_UE *phy_vars_ue, runmode_t mode)
LOG_I(PHY,"[UE%d] Initial sync : Estimated PSS position %d, Nid2 %d\n",phy_vars_ue->Mod_id,sync_pos,phy_vars_ue->lte_ue_common_vars.eNb_id);
#endif
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++)
rx_power += signal_energy(&phy_vars_ue->lte_ue_common_vars.rxdata[aarx][sync_pos2],
frame_parms->ofdm_symbol_size+frame_parms->nb_prefix_samples);
phy_vars_ue->PHY_measurements.rx_power_avg_dB[0] = dB_fixed(rx_power/frame_parms->nb_antennas_rx);
#ifdef DEBUG_INITIAL_SYNCH
LOG_I(PHY,"[UE%d] Initial sync : Estimated power: %d dB\n",phy_vars_ue->Mod_id,phy_vars_ue->PHY_measurements.rx_power_avg_dB[0] );
#endif
#ifdef EXMIMO
if ((openair_daq_vars.rx_gain_mode == DAQ_AGC_ON) &&
(mode != rx_calib_ue) && (mode != rx_calib_ue_med) && (mode != rx_calib_ue_byp) )
//phy_adjust_gain(phy_vars_ue,0);
gain_control_all(phy_vars_ue->PHY_measurements.rx_power_avg_dB[0],0);
#else
#ifndef OAI_USRP
#ifndef OAI_BLADERF
phy_adjust_gain(phy_vars_ue,0);
#endif
#endif
#endif
// SSS detection
// PSS is hypothesized in last symbol of first slot in Frame
@@ -597,6 +570,54 @@ int initial_sync(PHY_VARS_UE *phy_vars_ue, runmode_t mode)
}
// gain control
if (ret!=0) { //we are not synched, so do a measurement on the full frame
rx_power = 0;
for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++)
rx_power += signal_energy(&phy_vars_ue->lte_ue_common_vars.rxdata[aarx][0],
frame_parms->samples_per_tti*10);
// we might add a low-pass filter here later
phy_vars_ue->PHY_measurements.rx_power_avg[0] = rx_power/frame_parms->nb_antennas_rx;
phy_vars_ue->PHY_measurements.rx_power_avg_dB[0] = dB_fixed(phy_vars_ue->PHY_measurements.rx_power_avg[0]);
#ifdef DEBUG_INITIAL_SYNCH
LOG_I(PHY,"[UE%d] Initial sync : Estimated power: %d dB\n",phy_vars_ue->Mod_id,phy_vars_ue->PHY_measurements.rx_power_avg_dB[0] );
#endif
#ifdef EXMIMO
if ((openair_daq_vars.rx_gain_mode == DAQ_AGC_ON) &&
(mode != rx_calib_ue) && (mode != rx_calib_ue_med) && (mode != rx_calib_ue_byp) )
//phy_adjust_gain(phy_vars_ue,0);
gain_control_all(phy_vars_ue->PHY_measurements.rx_power_avg_dB[0],0);
#else
#ifndef OAI_USRP
#ifndef OAI_BLADERF
phy_adjust_gain(phy_vars_ue,phy_vars_ue->PHY_measurements.rx_power_avg_dB[0],0);
#endif
#endif
#endif
}
else {
#ifdef EXMIMO
if ((openair_daq_vars.rx_gain_mode == DAQ_AGC_ON) &&
(mode != rx_calib_ue) && (mode != rx_calib_ue_med) && (mode != rx_calib_ue_byp) )
//phy_adjust_gain(phy_vars_ue,0);
gain_control_all(dB_fixed(phy_vars_ue->PHY_measurements.rssi),0);
#else
#ifndef OAI_USRP
#ifndef OAI_BLADERF
phy_adjust_gain(phy_vars_ue,dB_fixed(phy_vars_ue->PHY_measurements.rssi),0);
#endif
#endif
#endif
}
// exit_fun("debug exit");
return ret;
}
openair1/SCHED/phy_procedures_lte_ue.c
+2 -2
View File
@@ -1549,12 +1549,12 @@ void lte_ue_measurement_procedures(uint16_t l, PHY_VARS_UE *phy_vars_ue,uint8_t
if ((openair_daq_vars.rx_gain_mode == DAQ_AGC_ON) &&
(mode != rx_calib_ue) && (mode != rx_calib_ue_med) && (mode != rx_calib_ue_byp) )
if (phy_vars_ue->frame_rx%100==0)
gain_control_all(phy_vars_ue->PHY_measurements.rx_power_avg_dB[eNB_id],0);
gain_control_all(dB_fixed(phy_vars_ue->PHY_measurements.rssi),0);
#else
#ifndef OAI_USRP
#ifndef OAI_BLADERF
phy_adjust_gain (phy_vars_ue,0);
phy_adjust_gain (phy_vars_ue,dB_fixed(phy_vars_ue->PHY_measurements.rssi),0);
#endif
#endif
#endif