maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

this commit includes pucch format0 receiver and testbench for pucch format0 without ofdm. Also it has some fixes to pucch_nr.c

Browse Source
This commit is contained in:
prasanth
2019-05-21 23:18:20 +05:30
parent 94cca3213e
commit e84a73f66c
6 changed files with 773 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files
cmake_targets/CMakeLists.txt
+9
View File
@@ -1292,6 +1292,7 @@ set(PHY_SRC_UE
${OPENAIR1_DIR}/PHY/TOOLS/lut.c
${PHY_POLARSRC}
${PHY_LDPCSRC}
${OPENAIR1_DIR}/PHY/NR_TRANSPORT/pucch_rx.c # added by prasanth
)
set(PHY_NR_UE_SRC
@@ -2551,6 +2552,14 @@ add_executable(nr_pbchsim
${T_SOURCE})
target_link_libraries(nr_pbchsim -Wl,--start-group UTIL SIMU PHY_COMMON PHY_NR PHY_NR_UE SCHED_NR_LIB CONFIG_LIB -Wl,--end-group m pthread ${ATLAS_LIBRARIES} ${T_LIB} dl)
#PUCCH ---> Prashanth
add_executable(nr_pucchsim
${OPENAIR1_DIR}/SIMULATION/NR_PHY/pucchsim.c
${OPENAIR_DIR}/common/utils/backtrace.c
${T_SOURCE})
target_link_libraries(nr_pucchsim -Wl,--start-group UTIL SIMU PHY_COMMON PHY_NR PHY_NR_UE SCHED_NR_LIB CONFIG_LIB -Wl,--end-group m pthread ${ATLAS_LIBRARIES} ${T_LIB} dl)
#PUCCH ---> Prashanth
add_executable(nr_dlsim
${OPENAIR1_DIR}/SIMULATION/NR_PHY/dlsim.c
${OPENAIR_DIR}/common/utils/backtrace.c
cmake_targets/build_oai
+1 -1
View File
@@ -691,7 +691,7 @@ 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 nr_pbchsim nr_dlschsim nr_dlsim"
simlist="nr_pucchsim dlsim ulsim polartest ldpctest nr_pbchsim nr_dlschsim nr_dlsim"
for f in $simlist ; do
compilations \
phy_simulators $f \
openair1/PHY/NR_TRANSPORT/pucch_rx.c
+163
View File
@@ -0,0 +1,163 @@
#include<stdio.h>
#include <string.h>
#include <math.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include "PHY/impl_defs_nr.h"
#include "PHY/defs_nr_common.h"
#include "PHY/defs_nr_UE.h"
#include "PHY/NR_UE_TRANSPORT/pucch_nr.h"
#include "PHY/NR_UE_TRANSPORT/nr_transport_proto_ue.h"
#include "common/utils/LOG/log.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "T.h"
void nr_decode_pucch0( int32_t **rxdataF,
pucch_GroupHopping_t pucch_GroupHopping,
uint32_t n_id, // hoppingID higher layer parameter
uint8_t *payload,
NR_DL_FRAME_PARMS *frame_parms,
int16_t amp,
int nr_tti_tx,
uint8_t m0, // should come from resource set
uint8_t nrofSymbols, // should come from resource set
uint8_t startingSymbolIndex, // should come from resource set
uint16_t startingPRB, // should come from resource set
uint8_t nr_bit) { // is number of UCI bits to be decoded
int nr_sequences;
uint8_t *mcs;
if(nr_bit==1){
mcs=table1_mcs;
nr_sequences=4;
}
else if(nr_bit==2){
mcs=table2_mcs;
nr_sequences=8;
}
/*
* Implement TS 38.211 Subclause 6.3.2.3.1 Sequence generation
*
*/
/*
* Defining cyclic shift hopping TS 38.211 Subclause 6.3.2.2.2
*/
// alpha is cyclic shift
double alpha;
// lnormal is the OFDM symbol number in the PUCCH transmission where l=0 corresponds to the first OFDM symbol of the PUCCH transmission
//uint8_t lnormal;
// lprime is the index of the OFDM symbol in the slot that corresponds to the first OFDM symbol of the PUCCH transmission in the slot given by [5, TS 38.213]
//uint8_t lprime;
// mcs is provided by TC 38.213 subclauses 9.2.3, 9.2.4, 9.2.5 FIXME!
//uint8_t mcs;
/*
* in TS 38.213 Subclause 9.2.1 it is said that:
* for PUCCH format 0 or PUCCH format 1, the index of the cyclic shift
* is indicated by higher layer parameter PUCCH-F0-F1-initial-cyclic-shift
*/
/*
* Implementing TS 38.211 Subclause 6.3.2.3.1, the sequence x(n) shall be generated according to:
* x(l*12+n) = r_u_v_alpha_delta(n)
*/
// the value of u,v (delta always 0 for PUCCH) has to be calculated according to TS 38.211 Subclause 6.3.2.2.1
uint8_t u=0,v=0;//,delta=0;
// if frequency hopping is disabled by the higher-layer parameter PUCCH-frequency-hopping
// n_hop = 0
// if frequency hopping is enabled by the higher-layer parameter PUCCH-frequency-hopping
// n_hop = 0 for first hop
// n_hop = 1 for second hop
uint8_t n_hop = 0;
//uint8_t PUCCH_Frequency_Hopping; // from higher layers FIXME!!
// x_n contains the sequence r_u_v_alpha_delta(n)
int16_t x_n_re[nr_sequences][24],x_n_im[nr_sequences][24];
int n,i,l;
for(i=0;i<nr_sequences;i++){
// we proceed to calculate alpha according to TS 38.211 Subclause 6.3.2.2.2
for (l=0; l<nrofSymbols; l++){
// if frequency hopping is enabled n_hop = 1 for second hop. Not sure frequency hopping concerns format 0. FIXME!!!
// if ((PUCCH_Frequency_Hopping == 1)&&(l == (nrofSymbols-1))) n_hop = 1;
nr_group_sequence_hopping(pucch_GroupHopping,n_id,n_hop,nr_tti_tx,&u,&v); // calculating u and v value
alpha = nr_cyclic_shift_hopping(n_id,m0,mcs[i],l,startingSymbolIndex,nr_tti_tx);
#ifdef DEBUG_NR_PUCCH_TX
printf("\t [nr_generate_pucch0] sequence generation \tu=%d \tv=%d \talpha=%lf \t(for symbol l=%d)\n",u,v,alpha,l);
#endif
for (n=0; n<12; n++){
x_n_re[i][(12*l)+n] = (int16_t)((int32_t)(amp)*(int16_t)(((((int32_t)(round(32767*cos(alpha*n))) * table_5_2_2_2_2_Re[u][n])>>15)
- (((int32_t)(round(32767*sin(alpha*n))) * table_5_2_2_2_2_Im[u][n])>>15)))>>15); // Re part of base sequence shifted by alpha
x_n_im[i][(12*l)+n] =(int16_t)((int32_t)(amp)* (int16_t)(((((int32_t)(round(32767*cos(alpha*n))) * table_5_2_2_2_2_Im[u][n])>>15)
+ (((int32_t)(round(32767*sin(alpha*n))) * table_5_2_2_2_2_Re[u][n])>>15)))>>15); // Im part of base sequence shifted by alpha
#ifdef DEBUG_NR_PUCCH_TX
printf("\t [nr_generate_pucch0] sequence generation \tu=%d \tv=%d \talpha=%lf \tx_n(l=%d,n=%d)=(%d,%d)\n",
u,v,alpha,l,n,x_n_re[(12*l)+n],x_n_im[(12*l)+n]);
#endif
}
}
}
int16_t r_re[24],r_im[24];
/*
* Implementing TS 38.211 Subclause 6.3.2.3.2 Mapping to physical resources FIXME!
*/
uint32_t re_offset=0;
for (l=0; l<nrofSymbols; l++) {
if ((startingPRB < (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 0)) { // if number RBs in bandwidth is even and current PRB is lower band
re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*startingPRB) + frame_parms->first_carrier_offset;
}
if ((startingPRB >= (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 0)) { // if number RBs in bandwidth is even and current PRB is upper band
re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(startingPRB-(frame_parms->N_RB_DL>>1)));
}
if ((startingPRB < (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd and current PRB is lower band
re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*startingPRB) + frame_parms->first_carrier_offset;
}
if ((startingPRB > (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd and current PRB is upper band
re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*(startingPRB-(frame_parms->N_RB_DL>>1))) + 6;
}
if ((startingPRB == (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) { // if number RBs in bandwidth is odd and current PRB contains DC
re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size) + (12*startingPRB) + frame_parms->first_carrier_offset;
}
for (n=0; n<12; n++){
if ((n==6) && (startingPRB == (frame_parms->N_RB_DL>>1)) && ((frame_parms->N_RB_DL & 1) == 1)) {
// if number RBs in bandwidth is odd and current PRB contains DC, we need to recalculate the offset when n=6 (for second half PRB)
re_offset = ((l+startingSymbolIndex)*frame_parms->ofdm_symbol_size);
}
r_re[(12*l)+n]=((int16_t *)&rxdataF[0][re_offset])[0];
r_im[(12*l)+n]=((int16_t *)&rxdataF[0][re_offset])[1];
#ifdef DEBUG_NR_PUCCH_TX
printf("\t [nr_generate_pucch0] mapping to RE \t amp=%d \tofdm_symbol_size=%d \tN_RB_DL=%d \tfirst_carrier_offset=%d \ttxptr(%d)=(x_n(l=%d,n=%d)=(%d,%d))\n",
amp,frame_parms->ofdm_symbol_size,frame_parms->N_RB_DL,frame_parms->first_carrier_offset,re_offset,
l,n,((int16_t *)&rxdataF[0][re_offset])[0],((int16_t *)&rxdataF[0][re_offset])[1]);
#endif
re_offset++;
}
}
double corr[nr_sequences],corr_re[nr_sequences],corr_im[nr_sequences];
memset(corr,0,nr_sequences*sizeof(double));
memset(corr_re,0,nr_sequences*sizeof(double));
memset(corr_im,0,nr_sequences*sizeof(double));
for(i=0;i<nr_sequences;i++){
for(l=0;l<nrofSymbols;l++){
for(n=0;n<12;n++){
corr_re[i]+= (double)(r_re[12*l+n])/32767*(double)(x_n_re[i][12*l+n])/32767+(double)(r_im[12*l+n])/32767*(double)(x_n_im[i][12*l+n])/32767;
corr_im[i]+= (double)(r_re[12*l+n])/32767*(double)(x_n_im[i][12*l+n])/32767-(double)(r_im[12*l+n])/32767*(double)(x_n_re[i][12*l+n])/32767;
}
}
corr[i]=corr_re[i]*corr_re[i]+corr_im[i]*corr_im[i];
}
float max_corr=corr[0];
int index=0;
for(i=1;i<nr_sequences;i++){
if(corr[i]>max_corr){
index= i;
max_corr=corr[i];
}
}
*payload=(uint8_t)index; // payload bits 00..b3b2b0, b0 is the SR bit and b3b2 are HARQ bits
}
openair1/PHY/NR_UE_TRANSPORT/pucch_nr.c
+22 -22
View File
@@ -48,14 +48,12 @@
#endif
//#define ONE_OVER_SQRT2 23170 // 32767/sqrt(2) = 23170 (ONE_OVER_SQRT2)
void nr_group_sequence_hopping (//pucch_GroupHopping_t ue->pucch_config_common_nr.puch_GroupHopping,
//uint8_t PUCCH_GroupHopping,
PHY_VARS_NR_UE *ue,
//uint32_t n_id,
uint8_t n_hop,
int nr_tti_tx,
uint8_t *u,
uint8_t *v) {
void nr_group_sequence_hopping (pucch_GroupHopping_t PUCCH_GroupHopping,
uint32_t n_id,
uint8_t n_hop,
int nr_tti_tx,
uint8_t *u,
uint8_t *v) {
/*
* Implements TS 38.211 subclause 6.3.2.2.1 Group and sequence hopping
* The following variables are set by higher layers:
@@ -69,12 +67,12 @@ void nr_group_sequence_hopping (//pucch_GroupHopping_t ue->pucch_config_common_n
* n_hop=1 for the second hop
*/
// depending on the value of the PUCCH_GroupHopping, we will obtain different values for u,v
pucch_GroupHopping_t PUCCH_GroupHopping = ue->pucch_config_common_nr->pucch_GroupHopping; // from higher layers FIXME!!!
//pucch_GroupHopping_t PUCCH_GroupHopping = ue->pucch_config_common_nr->pucch_GroupHopping; // from higher layers FIXME!!!
// n_id defined as per TS 38.211 subclause 6.3.2.2.1 (is given by the higher-layer parameter hoppingId)
// it is hoppingId from PUCCH-ConfigCommon:
// Cell-Specific scrambling ID for group hoppping and sequence hopping if enabled
// Corresponds to L1 parameter 'HoppingID' (see 38.211, section 6.3.2.2) BIT STRING (SIZE (10))
uint16_t n_id = ue->pucch_config_common_nr->hoppingId; // from higher layers FIXME!!!
//uint16_t n_id = ue->pucch_config_common_nr->hoppingId; // from higher layers FIXME!!!
#ifdef DEBUG_NR_PUCCH_TX
// initialization to be removed
PUCCH_GroupHopping=neither;
@@ -84,8 +82,8 @@ void nr_group_sequence_hopping (//pucch_GroupHopping_t ue->pucch_config_common_n
uint8_t f_ss=0,f_gh=0;
*u=0;
*v=0;
uint32_t c_init = (1<<5)*floor(n_id/30)+(n_id%30); // we initialize c_init to calculate u,v
uint32_t x1,s = lte_gold_generic(&x1, &c_init, 1); // TS 38.211 Subclause 5.2.1
uint32_t c_init = 0;
uint32_t x1,s; // TS 38.211 Subclause 5.2.1
int l = 32, minShift = ((2*nr_tti_tx+n_hop)<<3);
int tmpShift =0;
#ifdef DEBUG_NR_PUCCH_TX
@@ -97,6 +95,7 @@ void nr_group_sequence_hopping (//pucch_GroupHopping_t ue->pucch_config_common_n
}
if (PUCCH_GroupHopping == enable) { // PUCCH_GroupHopping 'enabled'
c_init = floor(n_id/30); // we initialize c_init to calculate u,v according to 6.3.2.2.1 of 38.211
for (int m=0; m<8; m++) {
while(minShift >= l) {
s = lte_gold_generic(&x1, &c_init, 0);
@@ -118,6 +117,7 @@ void nr_group_sequence_hopping (//pucch_GroupHopping_t ue->pucch_config_common_n
}
if (PUCCH_GroupHopping == disable) { // PUCCH_GroupHopping 'disabled'
c_init = (1<<5)*floor(n_id/30)+(n_id%30); // we initialize c_init to calculate u,v
f_ss = n_id%30;
l = 32, minShift = (2*nr_tti_tx+n_hop);
@@ -137,7 +137,7 @@ void nr_group_sequence_hopping (//pucch_GroupHopping_t ue->pucch_config_common_n
#endif
}
double nr_cyclic_shift_hopping(PHY_VARS_NR_UE *ue,
double nr_cyclic_shift_hopping(uint32_t n_id,
uint8_t m0,
uint8_t mcs,
uint8_t lnormal,
@@ -153,7 +153,7 @@ double nr_cyclic_shift_hopping(PHY_VARS_NR_UE *ue,
*/
// alpha_init initialized to 2*PI/12=0.5235987756
double alpha = 0.5235987756;
uint32_t c_init = ue->pucch_config_common_nr->hoppingId; // we initialize c_init again to calculate n_cs
uint32_t c_init = n_id; // we initialize c_init again to calculate n_cs
#ifdef DEBUG_NR_PUCCH_TX
// initialization to be remo.ved
c_init=10;
@@ -246,8 +246,8 @@ void nr_generate_pucch0(PHY_VARS_NR_UE *ue,
for (int l=0; l<nrofSymbols; l++) {
// if frequency hopping is enabled n_hop = 1 for second hop. Not sure frequency hopping concerns format 0. FIXME!!!
// if ((PUCCH_Frequency_Hopping == 1)&&(l == (nrofSymbols-1))) n_hop = 1;
nr_group_sequence_hopping(ue,n_hop,nr_tti_tx,&u,&v); // calculating u and v value
alpha = nr_cyclic_shift_hopping(ue,m0,mcs,l,startingSymbolIndex,nr_tti_tx);
nr_group_sequence_hopping(ue->pucch_config_common_nr->pucch_GroupHopping,ue->pucch_config_common_nr->hoppingId,n_hop,nr_tti_tx,&u,&v); // calculating u and v value
alpha = nr_cyclic_shift_hopping(ue->pucch_config_common_nr->hoppingId,m0,mcs,l,startingSymbolIndex,nr_tti_tx);
#ifdef DEBUG_NR_PUCCH_TX
printf("\t [nr_generate_pucch0] sequence generation \tu=%d \tv=%d \talpha=%lf \t(for symbol l=%d)\n",u,v,alpha,l);
#endif
@@ -435,8 +435,8 @@ void nr_generate_pucch1(PHY_VARS_NR_UE *ue,
printf("\t [nr_generate_pucch1] entering function nr_group_sequence_hopping with n_hop=%d, nr_tti_tx=%d\n",
n_hop,nr_tti_tx);
#endif
nr_group_sequence_hopping(ue,n_hop,nr_tti_tx,&u,&v); // calculating u and v value
alpha = nr_cyclic_shift_hopping(ue,m0,mcs,l,lprime,nr_tti_tx);
nr_group_sequence_hopping(ue->pucch_config_common_nr->pucch_GroupHopping,ue->pucch_config_common_nr->hoppingId,n_hop,nr_tti_tx,&u,&v); // calculating u and v value
alpha = nr_cyclic_shift_hopping(ue->pucch_config_common_nr->hoppingId,m0,mcs,l,lprime,nr_tti_tx);
for (int n=0; n<12; n++) {
r_u_v_alpha_delta_re[n] = (int16_t)(((((int32_t)(round(32767*cos(alpha*n))) * table_5_2_2_2_2_Re[u][n])>>15)
@@ -753,8 +753,8 @@ void nr_generate_pucch1_old(PHY_VARS_NR_UE *ue,
printf("\t [nr_generate_pucch1] entering function nr_group_sequence_hopping with n_hop=%d, nr_tti_tx=%d\n",
n_hop,nr_tti_tx);
#endif
nr_group_sequence_hopping(ue,n_hop,nr_tti_tx,&u,&v); // calculating u and v value
alpha = nr_cyclic_shift_hopping(ue,m0,mcs,lnormal,lprime,nr_tti_tx);
nr_group_sequence_hopping(ue->pucch_config_common_nr->pucch_GroupHopping,ue->pucch_config_common_nr->hoppingId,n_hop,nr_tti_tx,&u,&v); // calculating u and v value
alpha = nr_cyclic_shift_hopping(ue->pucch_config_common_nr->hoppingId,m0,mcs,lnormal,lprime,nr_tti_tx);
for (int n=0; n<12; n++) {
r_u_v_alpha_delta_re[n] = (int16_t)(((((int32_t)(round(32767*cos(alpha*n))) * table_5_2_2_2_2_Re[u][n])>>15)
@@ -1571,7 +1571,7 @@ void nr_generate_pucch3_4(PHY_VARS_NR_UE *ue,
for (int l=0; l<nrofSymbols; l++) {
if ((intraSlotFrequencyHopping == 1) && (l >= (int)floor(nrofSymbols/2))) n_hop = 1; // n_hop = 1 for second hop
nr_group_sequence_hopping(ue,n_hop,nr_tti_tx,&u,&v); // calculating u and v value
nr_group_sequence_hopping(ue->pucch_config_common_nr->pucch_GroupHopping,ue->pucch_config_common_nr->hoppingId,n_hop,nr_tti_tx,&u,&v); // calculating u and v value
// Next we proceed to calculate base sequence for DM-RS signal, according to TS 38.211 subclause 6.4.1.33
if (nrofPRB >= 3) { // TS 38.211 subclause 5.2.2.1 (Base sequences of length 36 or larger) applies
@@ -1617,7 +1617,7 @@ void nr_generate_pucch3_4(PHY_VARS_NR_UE *ue,
}
uint16_t j=0;
alpha = nr_cyclic_shift_hopping(ue,m0,mcs,l,startingSymbolIndex,nr_tti_tx);
alpha = nr_cyclic_shift_hopping(ue->pucch_config_common_nr->hoppingId,m0,mcs,l,startingSymbolIndex,nr_tti_tx);
for (int rb=0; rb<nrofPRB; rb++) {
if ((intraSlotFrequencyHopping == 1) && (l<floor(nrofSymbols/2))) { // intra-slot hopping enabled, we need to calculate new offset PRB
openair1/PHY/NR_UE_TRANSPORT/pucch_nr.h
+21 -5
View File
@@ -42,15 +42,26 @@
#include "T.h"
#define ONE_OVER_SQRT2 23170 // 32767/sqrt(2) = 23170 (ONE_OVER_SQRT2)
void nr_group_sequence_hopping (//pucch_GroupHopping_t ue->pucch_config_common_nr.puch_GroupHopping,
//uint8_t PUCCH_GroupHopping,
PHY_VARS_NR_UE *ue,
//uint32_t n_id,
void nr_decode_pucch0( int32_t **rxdataF,
pucch_GroupHopping_t PUCCH_GroupHopping,
uint32_t n_id, //PHY_VARS_gNB *gNB, generally rxdataf is in gNB->common_vars
uint8_t *payload,
NR_DL_FRAME_PARMS *frame_parms,
int16_t amp,
int nr_tti_tx,
uint8_t m0, // should come from resource set
uint8_t nrofSymbols, // should come from resource set
uint8_t startingSymbolIndex, // should come from resource set
uint16_t startingPRB, // should come from resource set
uint8_t nr_bit);
void nr_group_sequence_hopping (pucch_GroupHopping_t PUCCH_GroupHopping,
uint32_t n_id,
uint8_t n_hop,
int nr_tti_tx,
uint8_t *u,
uint8_t *v);
double nr_cyclic_shift_hopping(PHY_VARS_NR_UE *ue,
double nr_cyclic_shift_hopping(uint32_t n_id,
uint8_t m0,
uint8_t mcs,
uint8_t lnormal,
@@ -111,6 +122,11 @@ void nr_generate_pucch3_4(PHY_VARS_NR_UE *ue,
uint8_t nr_bit,
uint8_t occ_length_format4,
uint8_t occ_index_format4);
// tables for mcs values for different payloads
static const uint8_t table1_mcs[]={0,3,6,9};
static const uint8_t table2_mcs[]={0,1,3,4,6,7,9,10};
/*
* The following tables implement TS 38.211 Subclause 5.2.2.2 Base sequences of length less than 36 (rows->u {0,1,..,29} / columns->n {0,1,...,M_ZC-1)
* Where base sequence r_u_v(n)=exp[j*phi(n)*pi/4] 0<=n<=M_ZC-1 and M_ZC={6,12,18,24}
openair1/SIMULATION/NR_PHY/pucchsim.c
+557
View File
@@ -0,0 +1,557 @@
/*
* 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 <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.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_nr_common.h"
#include "PHY/defs_nr_UE.h"
#include "PHY/defs_gNB.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 "SCHED_NR/sched_nr.h"
#include "PHY/NR_UE_TRANSPORT/pucch_nr.h"
PHY_VARS_gNB *gNB;
PHY_VARS_NR_UE *UE;
RAN_CONTEXT_t RC;
double cpuf;
// dummy functions
int nfapi_mode=0;
int oai_nfapi_hi_dci0_req(nfapi_hi_dci0_request_t *hi_dci0_req) { return(0);}
int oai_nfapi_tx_req(nfapi_tx_request_t *tx_req) { return(0); }
int oai_nfapi_dl_config_req(nfapi_dl_config_request_t *dl_config_req) { return(0); }
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);}
uint32_t from_nrarfcn(int nr_bandP,uint32_t dl_nrarfcn) {return(0);}
int32_t get_uldl_offset(int nr_bandP) {return(0);}
NR_IF_Module_t *NR_IF_Module_init(int Mod_id){return(NULL);}
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);
}
// needed for some functions
PHY_VARS_NR_UE * PHY_vars_UE_g[1][1]={{NULL}};
int main(int argc, char **argv)
{
char c;
int i,aa;//,l;
double sigma2, sigma2_dB=10,SNR,snr0=-2.0,snr1=2.0;
double cfo=0;
uint8_t snr1set=0;
int **txdata;
double **s_re,**s_im,**r_re,**r_im;
double iqim = 0.0;
double ip =0.0;
unsigned char pbch_pdu[6];
// int sync_pos, sync_pos_slot;
// FILE *rx_frame_file;
FILE *output_fd = NULL;
uint8_t write_output_file=0;
//int result;
//int freq_offset;
// int subframe_offset;
// char fname[40], vname[40];
int trial,n_trials=1,n_errors=0,n_errors_payload=0;
uint8_t transmission_mode = 1,n_tx=1,n_rx=1;
uint16_t Nid_cell=0;
channel_desc_t *gNB2UE;
uint8_t extended_prefix_flag=0;
int8_t interf1=-21,interf2=-21;
FILE *input_fd=NULL,*pbch_file_fd=NULL;
//uint32_t nsymb,tx_lev,tx_lev1 = 0,tx_lev2 = 0;
//char input_val_str[50],input_val_str2[50];
//uint8_t frame_mod4,num_pdcch_symbols = 0;
//double pbch_sinr;
//int pbch_tx_ant;
SCM_t channel_model=AWGN;//Rayleigh1_anticorr;
int N_RB_DL=273,mu=1;
unsigned char frame_type = 0;
unsigned char pbch_phase = 0;
int frame=0,subframe=0;
int frame_length_complex_samples;
int frame_length_complex_samples_no_prefix;
NR_DL_FRAME_PARMS *frame_parms;
nfapi_nr_config_request_t *gNB_config;
int ret, payload_ret=0;
int run_initial_sync=0;
int loglvl=OAILOG_WARNING;
float target_error_rate = 0.01;
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, "f:hA:pf:g:i:j:n:o:s:S:t:x:y:z:N:F:GR:dP:IL:")) != -1) {
switch (c) {
case 'f':
write_output_file=1;
output_fd = fopen(optarg,"w");
if (output_fd==NULL) {
printf("Error opening %s\n",optarg);
exit(-1);
}
break;
case 'd':
frame_type = 1;
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;
default:
msg("Unsupported channel model!\n");
exit(-1);
}
break;
case 'i':
interf1=atoi(optarg);
break;
case 'j':
interf2=atoi(optarg);
break;
case 'n':
n_trials = atoi(optarg);
break;
case 'o':
cfo = atof(optarg);
msg("Setting CFO to %f Hz\n",cfo);
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 't':
Td= atof(optarg);
break;
*/
case 'p':
extended_prefix_flag=1;
break;
/*
case 'r':
ricean_factor = pow(10,-.1*atof(optarg));
if (ricean_factor>1) {
printf("Ricean factor must be between 0 and 1\n");
exit(-1);
}
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_DL = atoi(optarg);
break;
case 'F':
input_fd = fopen(optarg,"r");
if (input_fd==NULL) {
printf("Problem with filename %s\n",optarg);
exit(-1);
}
break;
case 'P':
pbch_phase = atoi(optarg);
if (pbch_phase>3)
printf("Illegal PBCH phase (0-3) got %d\n",pbch_phase);
break;
case 'I':
run_initial_sync=1;
target_error_rate=0.1;
break;
case 'L':
loglvl = atoi(optarg);
break;
default:
case 'h':
printf("%s -h(elp) -p(extended_prefix) -N cell_id -f output_filename -F input_filename -g channel_model -n n_frames -t Delayspread -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("-p Use extended prefix mode\n");
printf("-d Use TDD\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("-t Delay spread for multipath channel\n");
printf("-g [A,B,C,D,E,F,G] Use 3GPP SCM (A,B,C,D) or 36-101 (E-EPA,F-EVA,G-ETU) models (ignores delay spread and Ricean factor)\n");
printf("-x Transmission mode (1,2,6 for the moment)\n");
printf("-y Number of TX antennas used in eNB\n");
printf("-z Number of RX antennas used in UE\n");
printf("-i Relative strength of first intefering eNB (in dB) - cell_id mod 3 = 1\n");
printf("-j Relative strength of second intefering eNB (in dB) - cell_id mod 3 = 2\n");
printf("-o Carrier frequency offset in Hz\n");
printf("-N Nid_cell\n");
printf("-R N_RB_DL\n");
printf("-O oversampling factor (1,2,4,8,16)\n");
printf("-A Interpolation_filname Run with Abstraction to generate Scatter plot using interpolation polynomial in file\n");
// printf("-C Generate Calibration information for Abstraction (effective SNR adjustment to remove Pe bias w.r.t. AWGN)\n");
printf("-f Output filename (.txt format) for Pe/SNR results\n");
printf("-F Input filename (.txt format) for RX conformance testing\n");
exit (-1);
break;
}
}
logInit();
set_glog(loglvl);
T_stdout = 1;
if (snr1set==0)
snr1 = snr0+10;
printf("Initializing gNodeB for mu %d, N_RB_DL %d\n",mu,N_RB_DL);
RC.gNB = (PHY_VARS_gNB***) malloc(sizeof(PHY_VARS_gNB **));
RC.gNB[0] = (PHY_VARS_gNB**) malloc(sizeof(PHY_VARS_gNB *));
RC.gNB[0][0] = malloc(sizeof(PHY_VARS_gNB));
gNB = RC.gNB[0][0];
gNB_config = &gNB->gNB_config;
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_DL;
frame_parms->N_RB_UL = N_RB_DL;
frame_parms->Nid_cell = Nid_cell;
nr_phy_config_request_sim(gNB,N_RB_DL,N_RB_DL,mu,Nid_cell);
phy_init_nr_gNB(gNB,0,0);
double fs,bw,scs,eps;
if (mu == 1 && N_RB_DL == 217) {
fs = 122.88e6;
bw = 80e6;
scs = 30000;
}
else if (mu == 1 && N_RB_DL == 245) {
fs = 122.88e6;
bw = 90e6;
scs = 30000;
}
else if (mu == 1 && N_RB_DL == 273) {
fs = 122.88e6;
bw = 100e6;
scs = 30000;
}
else if (mu == 1 && N_RB_DL == 106) {
fs = 61.44e6;
bw = 40e6;
scs = 30000;
}
else AssertFatal(1==0,"Unsupported numerology for mu %d, N_RB %d\n",mu, N_RB_DL);
// cfo with respect to sub-carrier spacing
eps = cfo/scs;
// computation of integer and fractional FO to compare with estimation results
int IFO;
if(eps!=0.0){
printf("Introducing a CFO of %lf relative to SCS of %d kHz\n",eps,(int)(scs/1000));
if (eps>0)
IFO=(int)(eps+0.5);
else
IFO=(int)(eps-0.5);
printf("FFO = %lf; IFO = %d\n",eps-IFO,IFO);
}
gNB2UE = new_channel_desc_scm(n_tx,
n_rx,
channel_model,
fs,
bw,
0,
0,
0);
if (gNB2UE==NULL) {
msg("Problem generating channel model. Exiting.\n");
exit(-1);
}
frame_length_complex_samples = frame_parms->samples_per_subframe*NR_NUMBER_OF_SUBFRAMES_PER_FRAME;
frame_length_complex_samples_no_prefix = frame_parms->samples_per_subframe_wCP;
s_re = malloc(2*sizeof(double*));
s_im = malloc(2*sizeof(double*));
r_re = malloc(2*sizeof(double*));
r_im = malloc(2*sizeof(double*));
txdata = malloc(2*sizeof(int*));
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));
printf("Allocating %d samples for txdata\n",frame_length_complex_samples);
txdata[i] = malloc(frame_length_complex_samples*sizeof(int));
bzero(r_re[i],frame_length_complex_samples*sizeof(int));
}
if (pbch_file_fd!=NULL) {
load_pbch_desc(pbch_file_fd);
}
//configure UE
UE = malloc(sizeof(PHY_VARS_NR_UE));
memcpy(&UE->frame_parms,frame_parms,sizeof(NR_DL_FRAME_PARMS));
//phy_init_nr_top(UE); //called from init_nr_ue_signal
/* if (run_initial_sync==1) UE->is_synchronized = 0;
else UE->is_synchronized = 1; */
UE->perfect_ce = 0;
if(eps!=0.0)
UE->UE_fo_compensation = 1; // if a frequency offset is set then perform fo estimation and compensation
if (init_nr_ue_signal(UE, 1, 0) != 0)
{
printf("Error at UE NR initialisation\n");
exit(-1);
}
int16_t amp=0x1FFF;
int nr_tti_tx=0; //According to standards it is Slot number within a frame for subcarrier spacing configuration μ but not sure why he made the variable name so 4.3.2,38.211
nr_gold_pbch(UE);
// generate signal
// pucch_config_common_nr should assign values for this if not done before structure in ue being used by functions
uint8_t actual_payload=0,payload_received;//payload bits b7b6...b2b1b0 where b7..b3=0 b2b1=HARQ b0 is SR. payload maximum value is 7
uint8_t mcs;
int nr_bit=1;
/*if(nr_bit==1){
mcs=table1_mcs[actual_payload];
}
else{
mcs=table2_mcs[actual_payload];
}*/
uint8_t m0=0;// higher layer paramater initial cyclic shift
uint8_t nrofSymbols=1; //number of OFDM symbols can be 1-2 for format 1
uint8_t startingSymbolIndex=0; // resource allocated see 9.2.1, 38.213 for more info.should be actually present in the resource set provided
uint16_t startingPRB=5; //PRB number not sure see 9.2.1, 38.213 for more info. Should be actually present in the resource set provided
pucch_GroupHopping_t PUCCH_GroupHopping=UE->pucch_config_common_nr->pucch_GroupHopping;
uint32_t n_id=UE->pucch_config_common_nr->hoppingId;
printf("\nsnr1=%f\n",snr1);
for(SNR=snr0;SNR<=snr1;SNR=SNR+1){
n_errors = 0;
n_errors_payload = 0;
sigma2_dB = 20*log10((double)amp/32767)-SNR;
sigma2 = pow(10,sigma2_dB/10);
printf("entering SNR value %f\n",SNR);
for (trial=0; trial<n_trials; trial++) {
bzero(txdata[0],frame_length_complex_samples*sizeof(int));
actual_payload=trial%4;
if(nr_bit==1){
mcs=table1_mcs[actual_payload];
}
else{
mcs=table2_mcs[actual_payload];
}
nr_generate_pucch0(UE,txdata,frame_parms,UE->pucch_config_dedicated,amp,nr_tti_tx,m0,mcs,nrofSymbols,startingSymbolIndex,startingPRB);
for (i=0; i<frame_length_complex_samples; i++) {
r_re[0][i]=((double)(((int16_t *)txdata[0])[(i<<1)])/32767 + sqrt(sigma2/2)*gaussdouble(0.0,1.0));
r_im[0][i]=((double)(((int16_t *)txdata[0])[(i<<1)+1])/32767 + sqrt(sigma2/2)*gaussdouble(0.0,1.0));
if(r_re[0][i]<-1)
r_re[0][i]=-1;
else if(r_re[0][i]>1)
r_re[0][i]=1;
if(r_im[0][i]<-1)
r_im[0][i]=-1;
else if(r_im[0][i]>1)
r_im[0][0]=1;
((int16_t *)txdata[0])[(i<<1)] = (int16_t)round(r_re[0][i]*32767);
((int16_t *)txdata[0])[(i<<1)+1] =(int16_t)round(r_im[0][i]*32767);
}
nr_decode_pucch0(txdata,PUCCH_GroupHopping,n_id,&(payload_received),frame_parms,amp,nr_tti_tx,m0,nrofSymbols,startingSymbolIndex,startingPRB,nr_bit);
n_errors=((actual_payload^payload_received)&1)+(((actual_payload^payload_received)&2)>>1)+(((actual_payload^payload_received)&4)>>2)+n_errors;
//printf("actual_payload=%x,payload_received=%x",actual_payload,payload_received);
}
printf("SNR=%f, n_trials=%d, n_bit_errors=%d\n",SNR,n_trials,n_errors);
}
for (i=0; i<2; i++) {
free(s_re[i]);
free(s_im[i]);
free(r_re[i]);
free(r_im[i]);
free(txdata[i]);
}
free(s_re);
free(s_im);
free(r_re);
free(r_im);
free(txdata);
if (output_fd)
fclose(output_fd);
if (input_fd)
fclose(input_fd);
return(n_errors);
}