Raymond Knopp
97a081b31f
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@6650 818b1a75-f10b-46b9-bf7c-635c3b92a50f
171 lines
6.2 KiB
C
171 lines
6.2 KiB
C
/*******************************************************************************
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OpenAirInterface
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Copyright(c) 1999 - 2014 Eurecom
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OpenAirInterface is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenAirInterface is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenAirInterface.The full GNU General Public License is
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included in this distribution in the file called "COPYING". If not,
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see <http://www.gnu.org/licenses/>.
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Contact Information
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OpenAirInterface Admin: openair_admin@eurecom.fr
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OpenAirInterface Tech : openair_tech@eurecom.fr
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OpenAirInterface Dev : openair4g-devel@eurecom.fr
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Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
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*******************************************************************************/
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#include "PHY/types.h"
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#include "PHY/defs.h"
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#include "PHY/extern.h"
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#include "MAC_INTERFACE/defs.h"
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#include "MAC_INTERFACE/extern.h"
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#ifdef EXMIMO
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#include "openair0_lib.h"
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extern int card;
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#endif
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void
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phy_adjust_gain (PHY_VARS_UE *phy_vars_ue, uint8_t eNB_id) {
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uint16_t rx_power_fil_dB;
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#ifdef EXMIMO
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exmimo_config_t *p_exmimo_config = openair0_exmimo_pci[card].exmimo_config_ptr;
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uint16_t i;
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#endif
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int rssi;
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rssi = dB_fixed(phy_vars_ue->PHY_measurements.rssi);
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if (rssi>0) rx_power_fil_dB = rssi;
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else rx_power_fil_dB = phy_vars_ue->PHY_measurements.rx_power_avg_dB[eNB_id];
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printf("Gain control: rssi %d (%d,%d)\n",
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rssi,
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phy_vars_ue->PHY_measurements.rssi,
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phy_vars_ue->PHY_measurements.rx_power_avg_dB[eNB_id]
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);
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// Gain control with hysterisis
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// Adjust gain in phy_vars_ue->rx_vars[0].rx_total_gain_dB
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if (rx_power_fil_dB < TARGET_RX_POWER - 5) //&& (phy_vars_ue->rx_total_gain_dB < MAX_RF_GAIN) )
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phy_vars_ue->rx_total_gain_dB+=5;
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else if (rx_power_fil_dB > TARGET_RX_POWER + 5) //&& (phy_vars_ue->rx_total_gain_dB > MIN_RF_GAIN) )
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phy_vars_ue->rx_total_gain_dB-=5;
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if (phy_vars_ue->rx_total_gain_dB>MAX_RF_GAIN) {
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/*
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if ((openair_daq_vars.rx_rf_mode==0) && (openair_daq_vars.mode == openair_NOT_SYNCHED)) {
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openair_daq_vars.rx_rf_mode=1;
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phy_vars_ue->rx_total_gain_dB = max(MIN_RF_GAIN,MAX_RF_GAIN-25);
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}
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else {
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*/
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phy_vars_ue->rx_total_gain_dB = MAX_RF_GAIN;
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}
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else if (phy_vars_ue->rx_total_gain_dB<MIN_RF_GAIN) {
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/*
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if ((openair_daq_vars.rx_rf_mode==1) && (openair_daq_vars.mode == openair_NOT_SYNCHED)) {
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openair_daq_vars.rx_rf_mode=0;
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phy_vars_ue->rx_total_gain_dB = min(MAX_RF_GAIN,MIN_RF_GAIN+25);
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}
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else {
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*/
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phy_vars_ue->rx_total_gain_dB = MIN_RF_GAIN;
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}
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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);
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#ifdef EXMIMO
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if (phy_vars_ue->rx_total_gain_dB>phy_vars_ue->rx_gain_max[0]) {
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phy_vars_ue->rx_total_gain_dB = phy_vars_ue->rx_gain_max[0];
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for (i=0;i<phy_vars_ue->lte_frame_parms.nb_antennas_rx;i++) {
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p_exmimo_config->rf.rx_gain[i][0] = 30;
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}
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}
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else if (phy_vars_ue->rx_total_gain_dB<(phy_vars_ue->rx_gain_max[0]-30)) {
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// for the moment we stay in max gain mode
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phy_vars_ue->rx_total_gain_dB = phy_vars_ue->rx_gain_max[0] - 30;
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for (i=0;i<phy_vars_ue->lte_frame_parms.nb_antennas_rx;i++) {
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p_exmimo_config->rf.rx_gain[i][0] = 0;
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}
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/*
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phy_vars_ue->rx_gain_mode[0] = byp;
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phy_vars_ue->rx_gain_mode[1] = byp;
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exmimo_pci_interface->rf.rf_mode0 = 22991; //bypass
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exmimo_pci_interface->rf.rf_mode1 = 22991; //bypass
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if (phy_vars_ue->rx_total_gain_dB<(phy_vars_ue->rx_gain_byp[0]-50)) {
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exmimo_pci_interface->rf.rx_gain00 = 0;
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exmimo_pci_interface->rf.rx_gain10 = 0;
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}
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*/
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}
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else {
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for (i=0;i<phy_vars_ue->lte_frame_parms.nb_antennas_rx;i++) {
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p_exmimo_config->rf.rx_gain[i][0] = 30 - phy_vars_ue->rx_gain_max[0] + phy_vars_ue->rx_total_gain_dB;
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}
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}
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/*
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break;
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case med_gain:
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case byp_gain:
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if (phy_vars_ue->rx_total_gain_dB>phy_vars_ue->rx_gain_byp[0]) {
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phy_vars_ue->rx_gain_mode[0] = max_gain;
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phy_vars_ue->rx_gain_mode[1] = max_gain;
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exmimo_pci_interface->rf.rf_mode0 = 55759; //max gain
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exmimo_pci_interface->rf.rf_mode1 = 55759; //max gain
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if (phy_vars_ue->rx_total_gain_dB>phy_vars_ue->rx_gain_max[0]) {
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exmimo_pci_interface->rf.rx_gain00 = 50;
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exmimo_pci_interface->rf.rx_gain10 = 50;
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}
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else {
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exmimo_pci_interface->rf.rx_gain00 = 50 - phy_vars_ue->rx_gain_max[0] + phy_vars_ue->rx_total_gain_dB;
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exmimo_pci_interface->rf.rx_gain10 = 50 - phy_vars_ue->rx_gain_max[1] + phy_vars_ue->rx_total_gain_dB;
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}
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}
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else if (phy_vars_ue->rx_total_gain_dB<(phy_vars_ue->rx_gain_byp[0]-50)) {
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exmimo_pci_interface->rf.rx_gain00 = 0;
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exmimo_pci_interface->rf.rx_gain10 = 0;
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}
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else {
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exmimo_pci_interface->rf.rx_gain00 = 50 - phy_vars_ue->rx_gain_byp[0] + phy_vars_ue->rx_total_gain_dB;
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exmimo_pci_interface->rf.rx_gain10 = 50 - phy_vars_ue->rx_gain_byp[1] + phy_vars_ue->rx_total_gain_dB;
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}
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break;
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default:
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exmimo_pci_interface->rf.rx_gain00 = 50;
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exmimo_pci_interface->rf.rx_gain10 = 50;
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break;
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}
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*/
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#endif
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#ifdef DEBUG_PHY
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/* if ((phy_vars_ue->frame%100==0) || (phy_vars_ue->frame < 10))
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msg("[PHY][ADJUST_GAIN] frame %d, rx_power = %d, rx_power_fil = %d, rx_power_fil_dB = %d, coef=%d, ncoef=%d, rx_total_gain_dB = %d (%d,%d,%d)\n",
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phy_vars_ue->frame,rx_power,rx_power_fil,rx_power_fil_dB,coef,ncoef,phy_vars_ue->rx_total_gain_dB,
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TARGET_RX_POWER,MAX_RF_GAIN,MIN_RF_GAIN);
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*/
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#endif //DEBUG_PHY
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}
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