Cedric Roux
aea6b4b5a6
For whatever reason most of the files had their permission changed from 644 to 755, which is not wanted.
153 lines
4.8 KiB
C
153 lines
4.8 KiB
C
/*
|
|
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership.
|
|
* The OpenAirInterface Software Alliance licenses this file to You under
|
|
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
|
|
* except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.openairinterface.org/?page_id=698
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*-------------------------------------------------------------------------------
|
|
* For more information about the OpenAirInterface (OAI) Software Alliance:
|
|
* contact@openairinterface.org
|
|
*/
|
|
|
|
#include "PHY/defs_eNB.h"
|
|
#include "PHY/defs_UE.h"
|
|
|
|
//#define DEBUG_PC 0
|
|
/*
|
|
double ratioPB[2][4]={{ 1.0,4.0/5.0,3.0/5.0,2.0/5.0},
|
|
{ 5.0/4.0,1.0,3.0/4.0,1.0/2.0}};
|
|
*/
|
|
|
|
double ratioPB[2][4]={{ 0.00000, -0.96910, -2.21849, -3.97940}, //in db
|
|
{ 0.96910, 0.00000, -1.24939, -3.01030}};
|
|
|
|
double pa_values[8]={-6.0,-4.77,-3.0,-1.77,0.0,1.0,2.0,3.0}; //reported by higher layers
|
|
|
|
double get_pa_dB(uint8_t pa)
|
|
{
|
|
AssertFatal(pa<8,"pa %d is not in (0...7)\n",pa);
|
|
|
|
return(pa_values[pa]);
|
|
|
|
}
|
|
|
|
double computeRhoA_eNB(uint8_t pa,
|
|
LTE_eNB_DLSCH_t *dlsch_eNB, int dl_power_off, uint8_t n_antenna_port){
|
|
double rho_a_dB;
|
|
double sqrt_rho_a_lin;
|
|
|
|
rho_a_dB = get_pa_dB(pa);
|
|
|
|
if(!dl_power_off) //if dl_power_offset is 0, this is for MU-interference, TM5
|
|
rho_a_dB-=10*log10(2);
|
|
|
|
if(n_antenna_port==4) // see TS 36.213 Section 5.2
|
|
rho_a_dB+=10*log10(2);
|
|
|
|
sqrt_rho_a_lin= pow(10,(0.05*rho_a_dB));
|
|
|
|
dlsch_eNB->sqrt_rho_a= (short) (sqrt_rho_a_lin*pow(2,13));
|
|
|
|
#if DEBUG_PC
|
|
printf("eNB: p_a=%d, value=%f, sqrt_rho_a=%d\n",p_a,pa_values[ pdsch_config_dedicated->p_a],dlsch_eNB->sqrt_rho_a);
|
|
#endif
|
|
|
|
return(rho_a_dB);
|
|
}
|
|
|
|
double computeRhoB_eNB(uint8_t pa,
|
|
uint8_t pb,
|
|
uint8_t n_antenna_port,
|
|
LTE_eNB_DLSCH_t *dlsch_eNB,
|
|
int dl_power_off)
|
|
{
|
|
|
|
double rho_a_dB, rho_b_dB;
|
|
double sqrt_rho_b_lin;
|
|
|
|
AssertFatal(pa<8,"pa %d is not in (0...7)\n",pa);
|
|
AssertFatal(pb<4,"pb %d is not in (0...3)\n",pb);
|
|
rho_a_dB= computeRhoA_eNB(pa,dlsch_eNB,dl_power_off, n_antenna_port);
|
|
|
|
if(n_antenna_port>1)
|
|
rho_b_dB= ratioPB[1][pb] + rho_a_dB;
|
|
else
|
|
rho_b_dB= ratioPB[0][pb] + rho_a_dB;
|
|
|
|
sqrt_rho_b_lin= pow(10,(0.05*rho_b_dB));
|
|
|
|
dlsch_eNB->sqrt_rho_b= (short) (sqrt_rho_b_lin*pow(2,13));
|
|
|
|
#ifdef DEBUG_PC
|
|
printf("eNB: n_ant=%d, p_b=%d -> rho_b/rho_a=%f -> sqrt_rho_b=%d\n",n_antenna_port,pb,ratioPB[1][pb],dlsch_eNB->sqrt_rho_b);
|
|
#endif
|
|
return(rho_b_dB);
|
|
}
|
|
|
|
double computeRhoA_UE(PDSCH_CONFIG_DEDICATED *pdsch_config_dedicated,
|
|
LTE_UE_DLSCH_t *dlsch_ue,
|
|
unsigned char dl_power_off,
|
|
uint8_t n_antenna_port
|
|
){
|
|
|
|
double rho_a_dB;
|
|
double sqrt_rho_a_lin;
|
|
|
|
rho_a_dB = get_pa_dB(pdsch_config_dedicated->p_a);
|
|
|
|
if(!dl_power_off)
|
|
rho_a_dB-=10*log10(2);
|
|
//if dl_power_offset is 0, this is for MU-interference, TM5. But in practice UE may assume 16 or 64QAM TM4 as multiuser
|
|
|
|
if(n_antenna_port==4) // see TS 36.213 Section 5.2
|
|
rho_a_dB=+10*log10(2);
|
|
|
|
sqrt_rho_a_lin= pow(10,(0.05*rho_a_dB));
|
|
|
|
dlsch_ue->sqrt_rho_a= (short) (sqrt_rho_a_lin*pow(2,13));
|
|
|
|
#ifdef DEBUG_PC
|
|
printf("UE: p_a=%d, value=%f, dl_power_off=%d, sqrt_rho_a=%d\n",pdsch_config_dedicated->p_a,pa_values[ pdsch_config_dedicated->p_a],dl_power_off,dlsch_ue->sqrt_rho_a);
|
|
#endif
|
|
|
|
return(rho_a_dB);
|
|
}
|
|
|
|
double computeRhoB_UE(PDSCH_CONFIG_DEDICATED *pdsch_config_dedicated,
|
|
PDSCH_CONFIG_COMMON *pdsch_config_common,
|
|
uint8_t n_antenna_port,
|
|
LTE_UE_DLSCH_t *dlsch_ue,
|
|
unsigned char dl_power_off)
|
|
{
|
|
|
|
double rho_a_dB, rho_b_dB;
|
|
double sqrt_rho_b_lin;
|
|
|
|
rho_a_dB= computeRhoA_UE(pdsch_config_dedicated,dlsch_ue,dl_power_off, n_antenna_port);
|
|
|
|
if(n_antenna_port>1)
|
|
rho_b_dB= ratioPB[1][pdsch_config_common->p_b] + rho_a_dB;
|
|
else
|
|
rho_b_dB= ratioPB[0][pdsch_config_common->p_b] + rho_a_dB;
|
|
|
|
sqrt_rho_b_lin= pow(10,(0.05*rho_b_dB));
|
|
|
|
dlsch_ue->sqrt_rho_b= (short) (sqrt_rho_b_lin*pow(2,13));
|
|
|
|
#ifdef DEBUG_PC
|
|
printf("UE: p_b=%d, n_ant=%d -> ratio=%f -> sqrt_rho_b=%d\n",pdsch_config_common->p_b, n_antenna_port,ratioPB[1][pdsch_config_common->p_b],dlsch_ue->sqrt_rho_b);
|
|
#endif
|
|
return(rho_b_dB);
|
|
}
|
|
|