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added missing files for nr_prach with respect to previous commit. Added nr_prachsim to build_oai.

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This commit is contained in:
Raymond Knopp
2019-05-28 13:16:56 +02:00
parent 48c24e5f4d
commit a8d8b590c7
6 changed files with 1026 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
cmake_targets/build_oai
+1 -1
View File
@@ -684,7 +684,7 @@ function main() {
echo_info "Compiling unitary tests simulators"
# TODO: fix: dlsim_tm4 pucchsim prachsim pdcchsim pbchsim mbmssim
#simlist="dlsim_tm4 dlsim ulsim pucchsim prachsim pdcchsim pbchsim mbmssim"
simlist="dlsim ulsim polartest ldpctest smallblocktest nr_pbchsim nr_dlschsim nr_dlsim nr_ulschsim"
simlist="dlsim ulsim polartest ldpctest smallblocktest nr_pbchsim nr_dlschsim nr_dlsim nr_ulschsim nr_prachsim"
for f in $simlist ; do
compilations \
phy_simulators $f \
openair1/PHY/INIT/lte_parms.c
+2
View File
@@ -183,6 +183,8 @@ int init_frame_parms(LTE_DL_FRAME_PARMS *frame_parms,uint8_t osf)
if (frame_parms->frame_type == TDD) set_S_config(frame_parms);
frame_parms->samples_per_subframe=frame_parms->samples_per_tti;
frame_parms->samples_per_slot=frame_parms->samples_per_tti>>1;
// frame_parms->tdd_config=3;
return(0);
}
openair1/PHY/NR_TRANSPORT/nr_prach_common.c
+361
View File
@@ -0,0 +1,361 @@
/*
* 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
*/
/*! \file PHY/LTE_TRANSPORT/prach_common.c
* \brief Common routines for NR UE/gNB PRACH physical channel V15.4 2019-03
* \author R. Knopp
* \date 2019
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr
* \note
* \warning
*/
#include "PHY/sse_intrin.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "PHY/impl_defs_nr.h"
#include "PHY/defs_nr_UE.h"
#include "PHY/NR_TRANSPORT/nr_prach.h"
#include "PHY/NR_TRANSPORT/nr_transport_proto_common.h"
#include "common/utils/LOG/log.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "T.h"
void dump_nr_prach_config(NR_DL_FRAME_PARMS *frame_parms,uint8_t subframe) {
FILE *fd;
fd = fopen("prach_config.txt","w");
fprintf(fd,"prach_config: subframe = %d\n",subframe);
fprintf(fd,"prach_config: N_RB_UL = %d\n",frame_parms->N_RB_UL);
fprintf(fd,"prach_config: frame_type = %s\n",(frame_parms->frame_type==1) ? "TDD":"FDD");
if (frame_parms->frame_type==TDD) {
fprintf(fd,"prach_config: p_tdd_UL_DL_Configuration.referenceSCS = %d\n",frame_parms->p_tdd_UL_DL_Configuration->referenceSubcarrierSpacing);
fprintf(fd,"prach_config: p_tdd_UL_DL_Configuration.dl_UL_TransmissionPeriodicity = %d\n",frame_parms->p_tdd_UL_DL_Configuration->dl_UL_TransmissionPeriodicity);
fprintf(fd,"prach_config: p_tdd_UL_DL_Configuration.nrofDownlinkSlots = %d\n",frame_parms->p_tdd_UL_DL_Configuration->nrofDownlinkSlots);
fprintf(fd,"prach_config: p_tdd_UL_DL_Configuration.nrofDownlinkSymbols = %d\n",frame_parms->p_tdd_UL_DL_Configuration->nrofDownlinkSymbols);
fprintf(fd,"prach_config: p_tdd_UL_DL_Configuration.nrofUownlinkSlots = %d\n",frame_parms->p_tdd_UL_DL_Configuration->nrofDownlinkSlots);
fprintf(fd,"prach_config: p_tdd_UL_DL_Configuration.nrofUownlinkSymbols = %d\n",frame_parms->p_tdd_UL_DL_Configuration->nrofDownlinkSymbols);
if (frame_parms->p_tdd_UL_DL_Configuration->p_next) {
fprintf(fd,"prach_config: p_tdd_UL_DL_Configuration.referenceSCS2 = %d\n",frame_parms->p_tdd_UL_DL_Configuration->p_next->referenceSubcarrierSpacing);
fprintf(fd,"prach_config: p_tdd_UL_DL_Configuration.dl_UL_TransmissionPeriodicity2 = %d\n",frame_parms->p_tdd_UL_DL_Configuration->p_next->dl_UL_TransmissionPeriodicity);
fprintf(fd,"prach_config: p_tdd_UL_DL_Configuration.nrofDownlinkSlots2 = %d\n",frame_parms->p_tdd_UL_DL_Configuration->p_next->nrofDownlinkSlots);
fprintf(fd,"prach_config: p_tdd_UL_DL_Configuration.nrofDownlinkSymbols2 = %d\n",frame_parms->p_tdd_UL_DL_Configuration->p_next->nrofDownlinkSymbols);
fprintf(fd,"prach_config: p_tdd_UL_DL_Configuration.nrofUownlinkSlots2 = %d\n",frame_parms->p_tdd_UL_DL_Configuration->p_next->nrofDownlinkSlots);
fprintf(fd,"prach_config: p_tdd_UL_DL_Configuration.nrofUownlinkSymbols2 = %d\n",frame_parms->p_tdd_UL_DL_Configuration->p_next->nrofDownlinkSymbols);
}
}
fprintf(fd,"prach_config: rootSequenceIndex = %d\n",frame_parms->prach_config_common.rootSequenceIndex);
fprintf(fd,"prach_config: prach_ConfigIndex = %d\n",frame_parms->prach_config_common.prach_ConfigInfo.prach_ConfigIndex);
fprintf(fd,"prach_config: Ncs_config = %d\n",frame_parms->prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig);
fprintf(fd,"prach_config: highSpeedFlag = %d\n",frame_parms->prach_config_common.prach_ConfigInfo.highSpeedFlag);
fprintf(fd,"prach_config: n_ra_prboffset = %d\n",frame_parms->prach_config_common.prach_ConfigInfo.msg1_frequencystart);
fclose(fd);
}
// This function computes the du
void nr_fill_du(uint8_t prach_fmt)
{
uint16_t iu,u,p;
uint16_t N_ZC;
uint16_t *prach_root_sequence_map;
if (prach_fmt<4) {
N_ZC = 839;
prach_root_sequence_map = prach_root_sequence_map_0_3;
} else {
N_ZC = 139;
prach_root_sequence_map = prach_root_sequence_map_abc;
}
for (iu=0; iu<(N_ZC-1); iu++) {
u=prach_root_sequence_map[iu];
p=1;
while (((u*p)%N_ZC)!=1)
p++;
nr_du[u] = ((p<(N_ZC>>1)) ? p : (N_ZC-p));
}
}
int is_nr_prach_subframe(NR_DL_FRAME_PARMS *frame_parms,uint32_t frame, uint8_t subframe) {
uint8_t prach_ConfigIndex = frame_parms->prach_config_common.prach_ConfigInfo.prach_ConfigIndex;
/*
// For FR1 paired
if (((frame%table_6_3_3_2_2_prachConfig_Index[prach_ConfigIndex][2]) == table_6_3_3_2_2_prachConfig_Index[prach_ConfigIndex][3]) &&
((table_6_3_3_2_2_prachConfig_Index[prach_ConfigIndex][4]&(1<<subframe)) == 1)) {
// using table 6.3.3.2-2: Random access configurations for FR1 and paired spectrum/supplementary uplink
return(1);
} else {
return(0);
}
*/
// For FR1 unpaired
if (((frame%table_6_3_3_2_3_prachConfig_Index[prach_ConfigIndex][2]) == table_6_3_3_2_3_prachConfig_Index[prach_ConfigIndex][3]) &&
((table_6_3_3_2_3_prachConfig_Index[prach_ConfigIndex][4]&(1<<subframe)) == 1)) {
// using table 6.3.3.2-2: Random access configurations for FR1 and unpaired
return(1);
} else {
return(0);
}
/*
// For FR2: FIXME
if ((((frame%table_6_3_3_2_4_prachConfig_Index[prach_ConfigIndex][2]) == table_6_3_3_2_4_prachConfig_Index[prach_ConfigIndex][3]) ||
((frame%table_6_3_3_2_4_prachConfig_Index[prach_ConfigIndex][2]) == table_6_3_3_2_4_prachConfig_Index[prach_ConfigIndex][4]))
&&
((table_6_3_3_2_4_prachConfig_Index[prach_ConfigIndex][5]&(1<<subframe)) == 1)) {
// using table 6.3.3.2-2: Random access configurations for FR1 and unpaired
return(1);
} else {
return(0);
}
*/
}
uint16_t get_nr_prach_fmt(int prach_ConfigIndex,lte_frame_type_t frame_type, nr_frequency_range_e fr)
{
if (frame_type==FDD) return (table_6_3_3_2_2_prachConfig_Index[prach_ConfigIndex][0]); // if using table 6.3.3.2-2: Random access configurations for FR1 and paired spectrum/supplementary uplink
else if (fr==nr_FR1) return (table_6_3_3_2_3_prachConfig_Index[prach_ConfigIndex][0]); // if using table 6.3.3.2-3: Random access configurations for FR1 and unpaired spectrum
else AssertFatal(1==0,"FR2 prach configuration not supported yet\n");
// For FR2 not implemented. FIXME
}
void compute_nr_prach_seq(uint16_t rootSequenceIndex,
uint8_t prach_ConfigIndex,
uint8_t zeroCorrelationZoneConfig,
uint8_t highSpeedFlag,
lte_frame_type_t frame_type,
nr_frequency_range_e fr,
uint32_t X_u[64][839])
{
// Compute DFT of x_u => X_u[k] = x_u(inv(u)*k)^* X_u[k] = exp(j\pi u*inv(u)*k*(inv(u)*k+1)/N_ZC)
unsigned int k,inv_u,i,NCS=0,num_preambles;
int N_ZC;
uint8_t prach_fmt = get_nr_prach_fmt(prach_ConfigIndex,frame_type,fr);
uint16_t *prach_root_sequence_map;
uint16_t u, preamble_offset;
uint16_t n_shift_ra,n_shift_ra_bar, d_start,numshift;
uint8_t not_found;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_UE_COMPUTE_PRACH, VCD_FUNCTION_IN);
#ifdef NR_PRACH_DEBUG
LOG_I(PHY,"compute_prach_seq: NCS_config %d, prach_fmt %x\n",zeroCorrelationZoneConfig, prach_fmt);
#endif
N_ZC = (prach_fmt < 4) ? 839 : 139;
//init_prach_tables(N_ZC); //moved to phy_init_lte_ue/eNB, since it takes to long in real-time
init_nr_prach_tables(N_ZC);
if (prach_fmt < 4) {
prach_root_sequence_map = prach_root_sequence_map_0_3;
} else {
// FIXME cannot be reached
prach_root_sequence_map = prach_root_sequence_map_abc;
}
#ifdef PRACH_DEBUG
LOG_I( PHY, "compute_prach_seq: done init prach_tables\n" );
#endif
int restricted_Type = 0; //this is hardcoded ('0' for restricted_TypeA; and '1' for restricted_TypeB). FIXME
if (highSpeedFlag== 0) {
#ifdef PRACH_DEBUG
LOG_I(PHY,"Low speed prach : NCS_config %d\n",zeroCorrelationZoneConfig);
#endif
AssertFatal(zeroCorrelationZoneConfig<=15,
"FATAL, Illegal Ncs_config for unrestricted format %"PRIu8"\n", zeroCorrelationZoneConfig );
if (prach_fmt<3) NCS = NCS_unrestricted_delta_f_RA_125[zeroCorrelationZoneConfig];
if (prach_fmt==3) NCS = NCS_unrestricted_delta_f_RA_5[zeroCorrelationZoneConfig];
if (prach_fmt>3) NCS = NCS_unrestricted_delta_f_RA_15[zeroCorrelationZoneConfig];
num_preambles = (NCS==0) ? 64 : ((64*NCS)/N_ZC);
if (NCS>0) num_preambles++;
preamble_offset = 0;
} else {
#ifdef PRACH_DEBUG
LOG_I( PHY, "high speed prach : NCS_config %"PRIu8"\n", zeroCorrelationZoneConfig );
#endif
AssertFatal(zeroCorrelationZoneConfig<=14,
"FATAL, Illegal Ncs_config for restricted format %"PRIu8"\n", zeroCorrelationZoneConfig );
if (prach_fmt<3){
if (restricted_Type == 0) NCS = NCS_restricted_TypeA_delta_f_RA_125[zeroCorrelationZoneConfig]; // for TypeA, this is hardcoded. FIXME
if (restricted_Type == 1) NCS = NCS_restricted_TypeB_delta_f_RA_125[zeroCorrelationZoneConfig]; // for TypeB, this is hardcoded. FIXME
}
if (prach_fmt==3){
if (restricted_Type == 0) NCS = NCS_restricted_TypeA_delta_f_RA_5[zeroCorrelationZoneConfig]; // for TypeA, this is hardcoded. FIXME
if (restricted_Type == 1) NCS = NCS_restricted_TypeB_delta_f_RA_5[zeroCorrelationZoneConfig]; // for TypeB, this is hardcoded. FIXME
}
if (prach_fmt>3){
}
nr_fill_du(prach_fmt);
num_preambles = 64; // compute ZC sequence for 64 possible roots
// find first non-zero shift root (stored in preamble_offset)
not_found = 1;
preamble_offset = 0;
while (not_found == 1) {
// current root depending on rootSequenceIndex
int index = (rootSequenceIndex + preamble_offset) % N_ZC;
if (prach_fmt<4) {
// prach_root_sequence_map points to prach_root_sequence_map0_3
DevAssert( index < sizeof(prach_root_sequence_map_0_3) / sizeof(prach_root_sequence_map_0_3[0]) );
} else {
// prach_root_sequence_map points to prach_root_sequence_map4
DevAssert( index < sizeof(prach_root_sequence_map_abc) / sizeof(prach_root_sequence_map_abc[0]) );
}
u = prach_root_sequence_map[index];
uint16_t n_group_ra = 0;
if ( (nr_du[u]<(N_ZC/3)) && (nr_du[u]>=NCS) ) {
n_shift_ra = nr_du[u]/NCS;
d_start = (nr_du[u]<<1) + (n_shift_ra * NCS);
n_group_ra = N_ZC/d_start;
n_shift_ra_bar = max(0,(N_ZC-(nr_du[u]<<1)-(n_group_ra*d_start))/N_ZC);
} else if ( (nr_du[u]>=(N_ZC/3)) && (nr_du[u]<=((N_ZC - NCS)>>1)) ) {
n_shift_ra = (N_ZC - (nr_du[u]<<1))/NCS;
d_start = N_ZC - (nr_du[u]<<1) + (n_shift_ra * NCS);
n_group_ra = nr_du[u]/d_start;
n_shift_ra_bar = min(n_shift_ra,max(0,(nr_du[u]- (n_group_ra*d_start))/NCS));
} else {
n_shift_ra = 0;
n_shift_ra_bar = 0;
}
// This is the number of cyclic shifts for the current root u
numshift = (n_shift_ra*n_group_ra) + n_shift_ra_bar;
// skip to next root and recompute parameters if numshift==0
if (numshift>0)
not_found = 0;
else
preamble_offset++;
}
}
#ifdef PRACH_DEBUG
if (NCS>0)
LOG_I( PHY, "Initializing %u preambles for PRACH (NCS_config %"PRIu8", NCS %u, N_ZC/NCS %u)\n",
num_preambles, zeroCorrelationZoneConfig, NCS, N_ZC/NCS );
#endif
for (i=0; i<num_preambles; i++) {
int index = (rootSequenceIndex+i+preamble_offset) % N_ZC;
if (prach_fmt<4) {
// prach_root_sequence_map points to prach_root_sequence_map0_3
DevAssert( index < sizeof(prach_root_sequence_map_0_3) / sizeof(prach_root_sequence_map_0_3[0]) );
} else {
// prach_root_sequence_map points to prach_root_sequence_map4
DevAssert( index < sizeof(prach_root_sequence_map_abc) / sizeof(prach_root_sequence_map_abc[0]) );
}
u = prach_root_sequence_map[index];
inv_u = nr_ZC_inv[u]; // multiplicative inverse of u
// X_u[0] stores the first ZC sequence where the root u has a non-zero number of shifts
// for the unrestricted case X_u[0] is the first root indicated by the rootSequenceIndex
for (k=0; k<N_ZC; k++) {
// 420 is the multiplicative inverse of 2 (required since ru is exp[j 2\pi n])
X_u[i][k] = ((uint32_t*)nr_ru)[(((k*(1+(inv_u*k)))%N_ZC)*420)%N_ZC];
}
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_UE_COMPUTE_PRACH, VCD_FUNCTION_OUT);
}
void init_nr_prach_tables(int N_ZC)
{
int i,m;
// Compute the modular multiplicative inverse 'iu' of u s.t. iu*u = 1 mod N_ZC
nr_ZC_inv[0] = 0;
nr_ZC_inv[1] = 1;
for (i=2; i<N_ZC; i++) {
for (m=2; m<N_ZC; m++)
if (((i*m)%N_ZC) == 1) {
nr_ZC_inv[i] = m;
break;
}
#ifdef PRACH_DEBUG
if (i<16)
printf("i %d : inv %d\n",i,nr_ZC_inv[i]);
#endif
}
// Compute quantized roots of unity
for (i=0; i<N_ZC; i++) {
nr_ru[i<<1] = (int16_t)(floor(32767.0*cos(2*M_PI*(double)i/N_ZC)));
nr_ru[1+(i<<1)] = (int16_t)(floor(32767.0*sin(2*M_PI*(double)i/N_ZC)));
#ifdef PRACH_DEBUG
if (i<16)
printf("i %d : runity %d,%d\n",i,nr_ru[i<<1],nr_ru[1+(i<<1)]);
#endif
}
}
openair1/PHY/defs_common.h
+4
View File
@@ -629,6 +629,10 @@ typedef struct LTE_DL_FRAME_PARMS {
uint16_t first_carrier_offset;
/// Number of samples in a subframe
uint32_t samples_per_tti;
/// Number of samples in a subframe
uint32_t samples_per_subframe;
/// Number of samples in a slot
uint32_t samples_per_slot;
/// Number of OFDM/SC-FDMA symbols in one subframe (to be modified to account for potential different in UL/DL)
uint16_t symbols_per_tti;
/// Number of OFDM symbols in DL portion of S-subframe
openair1/SIMULATION/LTE_PHY/prachsim.c
+2 -2
View File
@@ -22,8 +22,8 @@
#include <string.h>
#include <math.h>
#include <unistd.h>
#include "SIMULATION/TOOLS/defs.h"
#include "SIMULATION/RF/defs.h"
#include "SIMULATION/TOOLS/sim.h"
#include "SIMULATION/RF/rf.h"
#include "PHY/types.h"
#include "PHY/defs.h"
#include "PHY/vars.h"
openair1/SIMULATION/NR_PHY/prachsim.c
+656
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@@ -0,0 +1,656 @@
/*
* 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 <string.h>
#include <math.h>
#include <unistd.h>
#include "common/config/config_userapi.h"
#include "common/utils/LOG/log.h"
#include "common/ran_context.h"
#include "SIMULATION/TOOLS/sim.h"
#include "SIMULATION/RF/rf.h"
#include "PHY/types.h"
#include "PHY/defs_gNB.h"
#include "PHY/defs_nr_UE.h"
#include "SCHED_NR/sched_nr.h"
#include "SCHED_NR_UE/phy_frame_config_nr.h"
#include "PHY/phy_vars_nr_ue.h"
#include "PHY/NR_REFSIG/refsig_defs_ue.h"
#include "PHY/NR_REFSIG/nr_mod_table.h"
#include "PHY/MODULATION/modulation_eNB.h"
#include "PHY/MODULATION/modulation_UE.h"
#include "PHY/INIT/phy_init.h"
#include "PHY/NR_TRANSPORT/nr_transport.h"
#include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h"
#include "OCG_vars.h"
#include <pthread.h>
PHY_VARS_gNB *gNB;
PHY_VARS_NR_UE *UE;
RAN_CONTEXT_t RC;
RU_t *RU;
double cpuf;
extern uint16_t prach_root_sequence_map0_3[838];
void dump_nr_prach_config(NR_DL_FRAME_PARMS *frame_parms,uint8_t subframe);
void exit_function(const char* file, const char* function, const int line,const char *s) {
const char * msg= s==NULL ? "no comment": s;
printf("Exiting at: %s:%d %s(), %s\n", file, line, function, msg);
exit(-1);
}
int8_t nr_ue_get_SR(module_id_t module_idP, int CC_id, frame_t frameP, uint8_t eNB_id, uint16_t rnti, sub_frame_t subframe) {
AssertFatal(1==0,"Shouldn't be here ...\n");
return 0;
}
int32_t get_uldl_offset(int nr_bandP) {return(0);}
openair0_config_t openair0_cfg[MAX_CARDS];
int nfapi_mode=0;
NR_IF_Module_t *NR_IF_Module_init(int Mod_id){return(NULL);}
int oai_nfapi_ul_config_req(nfapi_ul_config_request_t *ul_config_req) { return(0); }
int oai_nfapi_nr_dl_config_req(nfapi_nr_dl_config_request_t *dl_config_req) {return(0);}
int oai_nfapi_tx_req(nfapi_tx_request_t *tx_req) { return(0); }
uint32_t from_nrarfcn(int nr_bandP,uint32_t dl_nrarfcn) {return(0);}
int main(int argc, char **argv)
{
char c;
int i,aa,aarx;
double sigma2, sigma2_dB=0,SNR,snr0=-2.0,snr1=0.0,ue_speed0=0.0,ue_speed1=0.0;
uint8_t snr1set=0;
uint8_t ue_speed1set=0;
int **txdata;
double **s_re,**s_im,**r_re,**r_im;
double iqim=0.0;
int trial; //, ntrials=1;
uint8_t transmission_mode = 1,n_tx=1,n_rx=1;
uint16_t Nid_cell=0;
uint8_t awgn_flag=0;
uint8_t hs_flag=0;
int n_frames=1;
channel_desc_t *UE2gNB;
uint32_t nsymb,tx_lev; //,tx_lev_dB;
// int8_t interf1=-19,interf2=-19;
NR_DL_FRAME_PARMS *frame_parms;
SCM_t channel_model=Rayleigh1;
// uint8_t abstraction_flag=0,calibration_flag=0;
// double prach_sinr;
int N_RB_UL=273;
uint32_t prach_errors=0;
uint8_t subframe=9;
uint16_t preamble_energy_list[64],preamble_tx=99,preamble_delay_list[64];
uint16_t preamble_max,preamble_energy_max;
PRACH_RESOURCES_t prach_resources;
//uint8_t prach_fmt;
//int N_ZC;
int delay = 0;
double delay_avg=0;
double ue_speed = 0;
int NCS_config = 13,rootSequenceIndex=0;
int threequarter_fs = 0;
int mu=1;
uint64_t SSB_positions=0x01;
int loglvl=OAILOG_INFO;
cpuf = get_cpu_freq_GHz();
if ( load_configmodule(argc,argv) == 0) {
exit_fun("[SOFTMODEM] Error, configuration module init failed\n");
}
randominit(0);
while ((c = getopt (argc, argv, "hHaA:Cr:p:g:n:s:S:t:x:y:v:V:z:N:F:d:Z:L:R:E")) != -1) {
switch (c) {
case 'a':
printf("Running AWGN simulation\n");
awgn_flag = 1;
/* ntrials not used later, no need to set */
//ntrials=1;
break;
case 'd':
delay = atoi(optarg);
break;
case 'g':
switch((char)*optarg) {
case 'A':
channel_model=SCM_A;
break;
case 'B':
channel_model=SCM_B;
break;
case 'C':
channel_model=SCM_C;
break;
case 'D':
channel_model=SCM_D;
break;
case 'E':
channel_model=EPA;
break;
case 'F':
channel_model=EVA;
break;
case 'G':
channel_model=ETU;
break;
case 'H':
channel_model=Rayleigh8;
case 'I':
channel_model=Rayleigh1;
case 'J':
channel_model=Rayleigh1_corr;
case 'K':
channel_model=Rayleigh1_anticorr;
case 'L':
channel_model=Rice8;
case 'M':
channel_model=Rice1;
case 'N':
channel_model=Rayleigh1_800;
break;
default:
msg("Unsupported channel model!\n");
exit(-1);
}
break;
case 'E':
threequarter_fs=1;
break;
case 'n':
n_frames = atoi(optarg);
break;
case 's':
snr0 = atof(optarg);
msg("Setting SNR0 to %f\n",snr0);
break;
case 'S':
snr1 = atof(optarg);
snr1set=1;
msg("Setting SNR1 to %f\n",snr1);
break;
case 'p':
preamble_tx=atoi(optarg);
break;
case 'v':
ue_speed0 = atoi(optarg);
break;
case 'V':
ue_speed1 = atoi(optarg);
ue_speed1set = 1;
break;
case 'Z':
NCS_config = atoi(optarg);
if ((NCS_config > 15) || (NCS_config < 0))
printf("Illegal NCS_config %d, (should be 0-15)\n",NCS_config);
break;
case 'H':
printf("High-Speed Flag enabled\n");
hs_flag = 1;
break;
case 'L':
rootSequenceIndex = atoi(optarg);
if ((rootSequenceIndex < 0) || (rootSequenceIndex > 837))
printf("Illegal rootSequenceNumber %d, (should be 0-837)\n",rootSequenceIndex);
break;
case 'x':
transmission_mode=atoi(optarg);
if ((transmission_mode!=1) &&
(transmission_mode!=2) &&
(transmission_mode!=6)) {
msg("Unsupported transmission mode %d\n",transmission_mode);
exit(-1);
}
break;
case 'y':
n_tx=atoi(optarg);
if ((n_tx==0) || (n_tx>2)) {
msg("Unsupported number of tx antennas %d\n",n_tx);
exit(-1);
}
break;
case 'z':
n_rx=atoi(optarg);
if ((n_rx==0) || (n_rx>2)) {
msg("Unsupported number of rx antennas %d\n",n_rx);
exit(-1);
}
break;
case 'N':
Nid_cell = atoi(optarg);
break;
case 'R':
N_RB_UL = atoi(optarg);
break;
case 'F':
break;
default:
case 'h':
printf("%s -h(elp) -a(wgn on) -p(extended_prefix) -N cell_id -f output_filename -F input_filename -g channel_model -n n_frames -s snr0 -S snr1 -x transmission_mode -y TXant -z RXant -i Intefrence0 -j Interference1 -A interpolation_file -C(alibration offset dB) -N CellId\n",
argv[0]);
printf("-h This message\n");
printf("-a Use AWGN channel and not multipath\n");
printf("-n Number of frames to simulate\n");
printf("-s Starting SNR, runs from SNR0 to SNR0 + 5 dB. If n_frames is 1 then just SNR is simulated\n");
printf("-S Ending SNR, runs from SNR0 to SNR1\n");
printf("-g [A,B,C,D,E,F,G,I,N] Use 3GPP SCM (A,B,C,D) or 36-101 (E-EPA,F-EVA,G-ETU) or Rayleigh1 (I) or Rayleigh1_800 (N) models (ignores delay spread and Ricean factor)\n");
printf("-z Number of RX antennas used in gNB\n");
printf("-N Nid_cell\n");
printf("-O oversampling factor (1,2,4,8,16)\n");
// printf("-f PRACH format (0=1,1=2,2=3,3=4)\n");
printf("-d Channel delay \n");
printf("-v Starting UE velocity in km/h, runs from 'v' to 'v+50km/h'. If n_frames is 1 just 'v' is simulated \n");
printf("-V Ending UE velocity in km/h, runs from 'v' to 'V'");
printf("-L rootSequenceIndex (0-837)\n");
printf("-Z NCS_config (ZeroCorrelationZone) (0-15)\n");
printf("-H Run with High-Speed Flag enabled \n");
printf("-R Number of PRB (6,15,25,50,75,100)\n");
printf("-F Input filename (.txt format) for RX conformance testing\n");
exit (-1);
break;
}
}
logInit();
set_glog(loglvl);
T_stdout = 1;
SET_LOG_DEBUG(PRACH);
if (snr1set==0) {
if (n_frames==1)
snr1 = snr0+.1;
else
snr1 = snr0+5.0;
}
RC.gNB = (PHY_VARS_gNB***) malloc(2*sizeof(PHY_VARS_gNB **));
RC.gNB[0] = (PHY_VARS_gNB**) malloc(2*sizeof(PHY_VARS_gNB *));
RC.gNB[0][0] = malloc(sizeof(PHY_VARS_gNB));
memset(RC.gNB[0][0],0,sizeof(PHY_VARS_gNB));
RC.ru = (RU_t**) malloc(2*sizeof(RU_t *));
RC.ru[0] = (RU_t*) malloc(sizeof(RU_t ));
memset(RC.ru[0],0,sizeof(RU_t));
RC.nb_RU = 1;
gNB = RC.gNB[0][0];
RU = RC.ru[0];
if (ue_speed1set==0) {
if (n_frames==1)
ue_speed1 = ue_speed0+10;
else
ue_speed1 = ue_speed0+50;
}
printf("SNR0 %f, SNR1 %f\n",snr0,snr1);
frame_parms = &gNB->frame_parms;
s_re = malloc(2*sizeof(double*));
s_im = malloc(2*sizeof(double*));
r_re = malloc(2*sizeof(double*));
r_im = malloc(2*sizeof(double*));
frame_parms = &gNB->frame_parms; //to be initialized I suppose (maybe not necessary for PBCH)
frame_parms->nb_antennas_tx = n_tx;
frame_parms->nb_antennas_rx = n_rx;
frame_parms->N_RB_DL = N_RB_UL;
frame_parms->N_RB_UL = N_RB_UL;
frame_parms->threequarter_fs = threequarter_fs;
nr_phy_config_request_sim(gNB,N_RB_UL,N_RB_UL,mu,Nid_cell,SSB_positions);
frame_parms->frame_type = TDD;
frame_parms->freq_range = nr_FR1;
nsymb = (frame_parms->Ncp == 0) ? 14 : 12;
printf("FFT Size %d, Extended Prefix %d, Samples per subframe %d,Frame type %s, Frequency Range %s\n",NUMBER_OF_OFDM_CARRIERS,
frame_parms->Ncp,frame_parms->samples_per_slot<<1,frame_parms->frame_type == FDD ? "FDD" : "TDD", frame_parms->freq_range == nr_FR1 ? "FR1" : "FR2");
RU->nr_frame_parms=frame_parms;
RU->if_south = LOCAL_RF;
RU->nb_tx = n_tx;
RU->nb_rx = n_rx;
RC.nb_nr_L1_inst=1;
phy_init_nr_gNB(gNB,0,0);
nr_phy_init_RU(RU);
set_tdd_config_nr(frame_parms, 5000,
7, 6,
2, 4);
//configure UE
UE = malloc(sizeof(PHY_VARS_NR_UE));
memset((void*)UE,0,sizeof(PHY_VARS_NR_UE));
PHY_vars_UE_g = malloc(2*sizeof(PHY_VARS_NR_UE**));
PHY_vars_UE_g[0] = malloc(2*sizeof(PHY_VARS_NR_UE*));
PHY_vars_UE_g[0][0] = UE;
memcpy(&UE->frame_parms,frame_parms,sizeof(NR_DL_FRAME_PARMS));
if (init_nr_ue_signal(UE, 1, 0) != 0)
{
printf("Error at UE NR initialisation\n");
exit(-1);
}
txdata = UE->common_vars.txdata;
printf("txdata %p\n",&txdata[0][subframe*frame_parms->samples_per_slot<<1]);
double fs,bw;
bw = N_RB_UL*(180e3)*(1<<gNB->frame_parms.numerology_index);
AssertFatal(bw<=122.88e6,"Illegal channel bandwidth %f (mu %d,N_RB_UL %d)\n",gNB->frame_parms.numerology_index,N_RB_UL);
if (bw <= 30.72e6) fs = 30.72e6;
else if (bw <= 61.44e6) fs = 61.44e6;
else if (bw <= 122.88e6) fs = 122.88e6;
LOG_I(PHY,"Running with bandwidth %f Hz, fs %f samp/s, FRAME_LENGTH_COMPLEX_SAMPLES %d\n",bw,fs,FRAME_LENGTH_COMPLEX_SAMPLES);
UE2gNB = new_channel_desc_scm(UE->frame_parms.nb_antennas_tx,
gNB->frame_parms.nb_antennas_rx,
channel_model,
fs,
bw,
0.0,
delay,
0);
if (UE2gNB==NULL) {
printf("Problem generating channel model. Exiting.\n");
exit(-1);
}
for (i=0; i<2; i++) {
s_re[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
bzero(s_re[i],FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
s_im[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
bzero(s_im[i],FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
r_re[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
bzero(r_re[i],FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
r_im[i] = malloc(FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
bzero(r_im[i],FRAME_LENGTH_COMPLEX_SAMPLES*sizeof(double));
}
UE->frame_parms.prach_config_common.rootSequenceIndex=rootSequenceIndex;
UE->frame_parms.prach_config_common.prach_ConfigInfo.prach_ConfigIndex=98;
UE->frame_parms.prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig=NCS_config;
UE->frame_parms.prach_config_common.prach_ConfigInfo.highSpeedFlag=hs_flag;
UE->frame_parms.prach_config_common.prach_ConfigInfo.restrictedSetConfig=0;
UE->frame_parms.prach_config_common.prach_ConfigInfo.msg1_frequencystart=0;
gNB->frame_parms.prach_config_common.rootSequenceIndex=rootSequenceIndex;
gNB->frame_parms.prach_config_common.prach_ConfigInfo.prach_ConfigIndex=98;
gNB->frame_parms.prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig=NCS_config;
gNB->frame_parms.prach_config_common.prach_ConfigInfo.highSpeedFlag=hs_flag;
gNB->frame_parms.prach_config_common.prach_ConfigInfo.restrictedSetConfig=0;
gNB->frame_parms.prach_config_common.prach_ConfigInfo.msg1_frequencystart=0;
gNB->proc.slot_rx = subframe<<1;
gNB->common_vars.rxdata = RU->common.rxdata;
compute_nr_prach_seq(gNB->frame_parms.prach_config_common.rootSequenceIndex,
gNB->frame_parms.prach_config_common.prach_ConfigInfo.prach_ConfigIndex,
gNB->frame_parms.prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig,
gNB->frame_parms.prach_config_common.prach_ConfigInfo.highSpeedFlag,
gNB->frame_parms.frame_type,
gNB->frame_parms.freq_range,
gNB->X_u);
compute_nr_prach_seq(UE->frame_parms.prach_config_common.rootSequenceIndex,
UE->frame_parms.prach_config_common.prach_ConfigInfo.prach_ConfigIndex,
UE->frame_parms.prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig,
UE->frame_parms.prach_config_common.prach_ConfigInfo.highSpeedFlag,
UE->frame_parms.frame_type,
UE->frame_parms.freq_range,
UE->X_u);
UE->prach_vars[0]->amp = AMP;
UE->prach_resources[0] = &prach_resources;
if (preamble_tx == 99)
preamble_tx = (uint16_t)(taus()&0x3f);
if (n_frames == 1)
printf("raPreamble %d\n",preamble_tx);
UE->prach_resources[0]->ra_PreambleIndex = preamble_tx;
UE->prach_resources[0]->ra_TDD_map_index = 0;
tx_lev = generate_nr_prach(UE,
0, //gNB_id,
subframe,
0); //Nf
/* tx_lev_dB not used later, no need to set */
//tx_lev_dB = (unsigned int) dB_fixed(tx_lev);
LOG_M("txsig0.m","txs0", &txdata[0][subframe*frame_parms->samples_per_slot<<1],frame_parms->samples_per_slot<<1,1,1);
//LOG_M("txsig1.m","txs1", txdata[1],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
// multipath channel
dump_nr_prach_config(&gNB->frame_parms,subframe);
for (i=0; i<2*frame_parms->samples_per_slot<<1; i++) {
for (aa=0; aa<1; aa++) {
if (awgn_flag == 0) {
s_re[aa][i] = ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_slot<<1]))[(i<<1)]);
s_im[aa][i] = ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_slot<<1]))[(i<<1)+1]);
} else {
for (aarx=0; aarx<gNB->frame_parms.nb_antennas_rx; aarx++) {
if (aa==0) {
r_re[aarx][i] = ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_slot<<1]))[(i<<1)]);
r_im[aarx][i] = ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_slot<<1]))[(i<<1)+1]);
} else {
r_re[aarx][i] += ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_slot<<1]))[(i<<1)]);
r_im[aarx][i] += ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_slot<<1]))[(i<<1)+1]);
}
}
}
}
}
for (SNR=snr0; SNR<snr1; SNR+=.2) {
for (ue_speed=ue_speed0; ue_speed<ue_speed1; ue_speed+=10) {
delay_avg = 0.0;
// max Doppler shift
UE2gNB->max_Doppler = 1.9076e9*(ue_speed/3.6)/3e8;
printf("n_frames %d SNR %f\n",n_frames,SNR);
prach_errors=0;
for (trial=0; trial<n_frames; trial++) {
sigma2_dB = 10*log10((double)tx_lev) - SNR;
if (n_frames==1)
printf("sigma2_dB %f (SNR %f dB) tx_lev_dB %f\n",sigma2_dB,SNR,10*log10((double)tx_lev));
//AWGN
sigma2 = pow(10,sigma2_dB/10);
// printf("Sigma2 %f (sigma2_dB %f)\n",sigma2,sigma2_dB);
if (awgn_flag == 0) {
multipath_tv_channel(UE2gNB,s_re,s_im,r_re,r_im,
2*frame_parms->samples_per_slot<<1,0);
}
if (n_frames==1) {
printf("rx_level data symbol %f, tx_lev %f\n",
10*log10(signal_energy_fp(r_re,r_im,1,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,0)),
10*log10(tx_lev));
}
for (i=0; i<frame_parms->samples_per_slot<<1; i++) {
for (aa=0; aa<gNB->frame_parms.nb_antennas_rx; aa++) {
((short*) &gNB->common_vars.rxdata[aa][subframe*(frame_parms->samples_per_slot<<1)])[2*i] = (short) (.167*(r_re[aa][i] +sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
((short*) &gNB->common_vars.rxdata[aa][subframe*(frame_parms->samples_per_slot<<1)])[2*i+1] = (short) (.167*(r_im[aa][i] + (iqim*r_re[aa][i]) + sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
}
}
uint16_t preamble_rx;
rx_nr_prach_ru(RU,
0,
subframe);
gNB->prach_vars.rxsigF = RU->prach_rxsigF;
rx_nr_prach(gNB,
0,
subframe,
&preamble_rx,
preamble_energy_list,
preamble_delay_list);
if (preamble_rx!=preamble_tx)
prach_errors++;
else {
delay_avg += (double)preamble_delay_list[preamble_max];
}
if (n_frames==1) {
printf("preamble %d (tx %d) : energy %d, delay %d\n",preamble_rx,preamble_tx,preamble_energy_list[0],preamble_delay_list[0]);
LOG_M("prach0.m","prach0", &txdata[0][subframe*frame_parms->samples_per_slot<<1],frame_parms->samples_per_slot<<1,1,1);
LOG_M("prachF0.m","prachF0", &gNB->prach_vars.prachF[0],24576,1,1);
LOG_M("rxsig0.m","rxs0",
&gNB->common_vars.rxdata[0][subframe*frame_parms->samples_per_slot<<1],
frame_parms->samples_per_slot<<1,1,1);
LOG_M("rxsigF0.m","rxsF0", gNB->prach_vars.rxsigF[0],839*4,1,1);
LOG_M("prach_preamble.m","prachp",&gNB->X_u[0],839,1,1);
}
}
printf("SNR %f dB, UE Speed %f km/h: errors %d/%d (delay %f)\n",SNR,ue_speed,prach_errors,n_frames,delay_avg/(double)(n_frames-prach_errors));
//printf("(%f,%f)\n",ue_speed,(double)prach_errors/(double)n_frames);
} // UE Speed loop
//printf("SNR %f dB, UE Speed %f km/h: errors %d/%d (delay %f)\n",SNR,ue_speed,prach_errors,n_frames,delay_avg/(double)(n_frames-prach_errors));
// printf("(%f,%f)\n",SNR,(double)prach_errors/(double)n_frames);
} //SNR loop
for (i=0; i<2; i++) {
free(s_re[i]);
free(s_im[i]);
free(r_re[i]);
free(r_im[i]);
}
free(s_re);
free(s_im);
free(r_re);
free(r_im);
return(0);
}
/*
for (i=1;i<4;i++)
memcpy((void *)&PHY_vars->tx_vars[0].TX_DMA_BUFFER[i*12*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX*2],
(void *)&PHY_vars->tx_vars[0].TX_DMA_BUFFER[0],
12*OFDM_SYMBOL_SIZE_SAMPLES_NO_PREFIX*2);
*/