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Made channel estimation techniques configurable

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This commit is contained in:
Sakthivel Velumani
2022-06-08 21:32:07 +05:30
parent 0960aa3d00
commit 93e6bd26da
16 changed files with 190 additions and 56 deletions
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openair1/SIMULATION/NR_PHY/dlsim.c
+19 -14
View File
@@ -66,6 +66,7 @@
#include "NR_RRCReconfiguration.h"
#define inMicroS(a) (((double)(a))/(get_cpu_freq_GHz()*1000.0))
#include "SIMULATION/LTE_PHY/common_sim.h"
#include "PHY/NR_REFSIG/dmrs_nr.h"
#include <openair2/LAYER2/MAC/mac_vars.h>
#include <openair2/RRC/LTE/rrc_vars.h>
@@ -434,7 +435,7 @@ int main(int argc, char **argv)
uint16_t rbSize = 106;
uint8_t mcsIndex = 9;
uint8_t dlsch_threads = 0;
int prb_inter = 0;
int chest_type[2] = {0};
uint8_t max_ldpc_iterations = 5;
if ( load_configmodule(argc,argv,CONFIG_ENABLECMDLINEONLY) == 0) {
exit_fun("[NR_DLSIM] Error, configuration module init failed\n");
@@ -446,7 +447,7 @@ int main(int argc, char **argv)
FILE *scg_fd=NULL;
while ((c = getopt (argc, argv, "f:hA:pf:g:in:s:S:t:x:y:z:M:N:F:GR:dPIL:Ea:b:d:e:q:m:w:T:U:X:")) != -1) {
while ((c = getopt (argc, argv, "f:hA:pf:g:i:n:s:S:t:x:y:z:M:N:F:GR:dPI:L:Ea:b:d:e:m:w:T:U:qX:Y")) != -1) {
switch (c) {
case 'f':
scg_fd = fopen(optarg,"r");
@@ -503,7 +504,9 @@ int main(int argc, char **argv)
break;
case 'i':
prb_inter=1;
for(i=0; i < atoi(optarg); i++){
chest_type[i] = atoi(argv[optind++]);
}
break;
case 'n':
@@ -590,9 +593,7 @@ int main(int argc, char **argv)
break;
case 'I':
run_initial_sync=1;
//target_error_rate=0.1;
slot = 0;
max_ldpc_iterations = atoi(optarg);
break;
case 'L':
@@ -637,10 +638,6 @@ int main(int argc, char **argv)
output_fd = fopen("txdata.dat", "w+");
break;
case 'Q':
max_ldpc_iterations = atoi(optarg);
break;
case 'T':
enable_ptrs=1;
for(i=0; i < atoi(optarg); i++) {
@@ -660,6 +657,12 @@ int main(int argc, char **argv)
gNBthreads[sizeof(gNBthreads)-1]=0;
break;
case 'Y':
run_initial_sync=1;
//target_error_rate=0.1;
slot = 0;
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 -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",
@@ -675,7 +678,7 @@ int main(int argc, char **argv)
printf("-g [A,B,C,D,E,F,G,R] Use 3GPP SCM (A,B,C,D) or 36-101 (E-EPA,F-EVA,G-ETU) models or R for MIMO model (ignores delay spread and Ricean factor)\n");
printf("-y Number of TX antennas used in gNB\n");
printf("-z Number of RX antennas used in UE\n");
printf("-i Activate PRB based averaging for channel estimation. Frequncy domain interpolation by default.\n");
printf("-i Change channel estimation technique. Arguments list: Frequency domain {0:Linear interpolation, 1:PRB based averaging}, Time domain {0:Estimates of last DMRS symbol, 1:Average of DMRS symbols}\n");
//printf("-j Relative strength of second intefering gNB (in dB) - cell_id mod 3 = 2\n");
printf("-R N_RB_DL\n");
printf("-O oversampling factor (1,2,4,8,16)\n");
@@ -692,13 +695,14 @@ int main(int argc, char **argv)
printf("-e MSC index\n");
printf("-q MCS Table index\n");
printf("-t Acceptable effective throughput (in percentage)\n");
printf("-I Maximum LDPC decoder iterations\n");
printf("-T Enable PTRS, arguments list L_PTRS{0,1,2} K_PTRS{2,4}, e.g. -T 2 0 2 \n");
printf("-Q Maximum LDPC decoder iterations\n");
printf("-U Change DMRS Config, arguments list DMRS TYPE{0=A,1=B} DMRS AddPos{0:2} DMRS ConfType{1:2}, e.g. -U 3 0 2 1 \n");
printf("-P Print DLSCH performances\n");
printf("-w Write txdata to binary file (one frame)\n");
printf("-d number of dlsch threads, 0: no dlsch parallelization\n");
printf("-X gNB thread pool configuration, n => no threads");
printf("-X gNB thread pool configuration, n => no threads\n");
printf("-Y Run initial sync in UE\n");
exit (-1);
break;
}
@@ -989,7 +993,8 @@ int main(int argc, char **argv)
UE->if_inst->phy_config_request = nr_ue_phy_config_request;
UE->if_inst->dl_indication = nr_ue_dl_indication;
UE->if_inst->ul_indication = dummy_nr_ue_ul_indication;
UE->prb_interpolation = prb_inter;
UE->chest_freq = chest_type[0];
UE->chest_time = chest_type[1];
UE_mac->if_module = nr_ue_if_module_init(0);
openair1/SIMULATION/NR_PHY/ulsim.c
+16 -13
View File
@@ -314,13 +314,13 @@ int main(int argc, char **argv)
double effTP[100];
float eff_tp_check = 100;
uint8_t snrRun;
int prb_inter = 0;
int chest_type[2] = {0};
int enable_ptrs = 0;
int modify_dmrs = 0;
/* L_PTRS = ptrs_arg[0], K_PTRS = ptrs_arg[1] */
int ptrs_arg[2] = {-1,-1};// Invalid values
int dmrs_arg[3] = {-1,-1,-1};// Invalid values
int dmrs_arg[4] = {-1,-1,-1,-1};// Invalid values
uint16_t ptrsSymPos = 0;
uint16_t ptrsSymbPerSlot = 0;
uint16_t ptrsRePerSymb = 0;
@@ -348,7 +348,7 @@ int main(int argc, char **argv)
/* initialize the sin-cos table */
InitSinLUT();
while ((c = getopt(argc, argv, "a:b:c:d:ef:g:h:ikl:m:n:p:r:s:t:u:w:y:z:B:F:G:H:I:M:N:PR:S:T:U:L:Z:W:")) != -1) {
while ((c = getopt(argc, argv, "a:b:c:d:ef:g:h:i:kl:m:n:p:q:r:s:t:u:w:y:z:F:G:H:I:M:N:PR:S:T:U:L:Z:W:")) != -1) {
printf("handling optarg %c\n",c);
switch (c) {
@@ -441,7 +441,9 @@ int main(int argc, char **argv)
break;
case 'i':
prb_inter=1;
for(i=0; i < atoi(optarg); i++){
chest_type[i] = atoi(argv[optind++]);
}
break;
case 'k':
@@ -468,6 +470,10 @@ int main(int argc, char **argv)
case 'p':
extended_prefix_flag = 1;
break;
case 'q':
mcs_table = atoi(optarg);
break;
case 'r':
nb_rb = atoi(optarg);
@@ -520,10 +526,6 @@ int main(int argc, char **argv)
}
break;
case 'B':
mcs_table = atoi(optarg);
break;
case 'F':
input_fd = fopen(optarg, "r");
if (input_fd == NULL) {
@@ -605,20 +607,20 @@ int main(int argc, char **argv)
printf("-f Number of frames to simulate\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("-h This message\n");
printf("-i Activate PRB based averaging for channel estimation. Frequncy domain interpolation by default.\n");
printf("-i Change channel estimation technique. Arguments list: Frequency domain {0:Linear interpolation, 1:PRB based averaging}, Time domain {0:Estimates of last DMRS symbol, 1:Average of DMRS symbols}\n");
//printf("-j Relative strength of second intefering eNB (in dB) - cell_id mod 3 = 2\n");
printf("-s Starting SNR, runs from SNR0 to SNR0 + 10 dB if ending SNR isn't given\n");
printf("-m MCS value\n");
printf("-n Number of trials to simulate\n");
printf("-p Use extended prefix mode\n");
//printf("-t Delay spread for multipath channel\n");
printf("-q MCS table\n");
printf("-t Delay spread for multipath channel\n");
printf("-u Set the numerology\n");
printf("-w Start PRB for PUSCH\n");
//printf("-x Transmission mode (1,2,6 for the moment)\n");
printf("-y Number of TX antennas used at UE\n");
printf("-z Number of RX antennas used at gNB\n");
printf("-A Interpolation_filname Run with Abstraction to generate Scatter plot using interpolation polynomial in file\n");
printf("-B MCS table\n");
//printf("-C Generate Calibration information for Abstraction (effective SNR adjustment to remove Pe bias w.r.t. AWGN)\n");
printf("-F Input filename (.txt format) for RX conformance testing\n");
printf("-G Offset of samples to read from file (0 default)\n");
@@ -632,7 +634,7 @@ int main(int argc, char **argv)
printf("-S Ending SNR, runs from SNR0 to SNR1\n");
printf("-P Print ULSCH performances\n");
printf("-T Enable PTRS, arguments list L_PTRS{0,1,2} K_PTRS{2,4}, e.g. -T 2 0 2 \n");
printf("-U Change DMRS Config, arguments list DMRS TYPE{0=A,1=B} DMRS AddPos{0:3}, e.g. -U 2 0 2 \n");
printf("-U Change DMRS Config, arguments list: DMRS Mapping Type{0=A,1=B}, DMRS AddPos{0:3}, DMRS Config Type{1,2}, Number of CDM groups without data{1,2,3} e.g. -U 4 0 2 0 1 \n");
printf("-Q If -F used, read parameters from file\n");
printf("-Z If -Z is used, SC-FDMA or transform precoding is enabled in Uplink \n");
printf("-W Num of layer for PUSCH\n");
@@ -727,7 +729,6 @@ int main(int argc, char **argv)
gNB->UL_INFO.crc_ind.crc_list = (nfapi_nr_crc_t *)malloc(NB_UE_INST*sizeof(nfapi_nr_crc_t));
gNB->UL_INFO.rx_ind.number_of_pdus = 0;
gNB->UL_INFO.crc_ind.number_crcs = 0;
gNB->prb_interpolation = prb_inter;
gNB->max_ldpc_iterations = max_ldpc_iterations;
frame_parms = &gNB->frame_parms; //to be initialized I suppose (maybe not necessary for PBCH)
@@ -792,6 +793,8 @@ int main(int argc, char **argv)
cfg->carrier_config.num_tx_ant.value = 1;
cfg->carrier_config.num_rx_ant.value = n_rx;
// nr_phy_config_request_sim(gNB,N_RB_DL,N_RB_DL,mu,0,0x01);
gNB->chest_freq = chest_type[0];
gNB->chest_time = chest_type[1];
phy_init_nr_gNB(gNB,0,1);
N_RB_DL = gNB->frame_parms.N_RB_DL;