84 lines
3.0 KiB
C
84 lines
3.0 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@lists.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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void
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phy_adjust_gain (PHY_VARS_UE *ue, uint32_t rx_power_fil_dB, uint8_t eNB_id)
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{
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LOG_D(PHY,"Gain control: rssi %d (%d,%d)\n",
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rx_power_fil_dB,
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ue->measurements.rssi,
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ue->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 ue->rx_vars[0].rx_total_gain_dB
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if (rx_power_fil_dB < TARGET_RX_POWER - 5) //&& (ue->rx_total_gain_dB < MAX_RF_GAIN) )
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ue->rx_total_gain_dB+=5;
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else if (rx_power_fil_dB > TARGET_RX_POWER + 5) //&& (ue->rx_total_gain_dB > MIN_RF_GAIN) )
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ue->rx_total_gain_dB-=5;
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if (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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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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ue->rx_total_gain_dB = MAX_RF_GAIN;
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} else if (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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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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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",ue->rx_total_gain_dB,MAX_RF_GAIN,rx_power_fil_dB);
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#ifdef DEBUG_PHY
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/* if ((ue->frame%100==0) || (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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ue->frame,rx_power,rx_power_fil,rx_power_fil_dB,coef,ncoef,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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