637 lines
19 KiB
C
637 lines
19 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.0 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include <string.h>
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#include <math.h>
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#include <unistd.h>
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#include "SIMULATION/TOOLS/defs.h"
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#include "SIMULATION/RF/defs.h"
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#include "PHY/types.h"
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#include "PHY/defs.h"
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#include "PHY/vars.h"
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#ifdef EMOS
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#include "SCHED/phy_procedures_emos.h"
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#endif
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#include "SCHED/defs.h"
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#include "SCHED/vars.h"
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#include "LAYER2/MAC/vars.h"
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#include "intertask_interface_init.h"
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#include "OCG_vars.h"
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#include "UTIL/LOG/log_extern.h"
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#include "unitary_defs.h"
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int current_dlsch_cqi; //FIXME!
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PHY_VARS_eNB *eNB;
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PHY_VARS_UE *UE;
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#define DLSCH_RB_ALLOC 0x1fbf // igore DC component,RB13
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double cpuf;
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int main(int argc, char **argv)
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{
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char c;
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int i,l,aa;
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double sigma2, sigma2_dB=0,SNR,snr0=-2.0,snr1=0.0;
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uint8_t snr1set=0;
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//mod_sym_t **txdataF;
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int **txdata;
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double s_re0[30720],s_re1[30720],s_im0[30720],s_im1[30720],r_re0[30720],r_im0[30720],r_re1[30720],r_im1[30720];
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double *s_re[2]={s_re0,s_re1};
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double *s_im[2]={s_im0,s_im1};
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double *r_re[2]={r_re0,r_re1};
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double *r_im[2]={r_im0,r_im1};
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double ricean_factor=0.0000005,iqim=0.0;
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int trial, n_trials, ntrials=1, n_errors;
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uint8_t transmission_mode = 1,n_tx=1,n_rx=1;
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unsigned char eNB_id = 0;
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uint16_t Nid_cell=0;
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int n_frames=1;
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channel_desc_t *UE2eNB;
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uint32_t nsymb,tx_lev;
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uint8_t extended_prefix_flag=0;
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LTE_DL_FRAME_PARMS *frame_parms;
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#ifdef EMOS
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fifo_dump_emos emos_dump;
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#endif
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SCM_t channel_model=Rayleigh1_corr;
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// double pucch_sinr;
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uint8_t osf=1,N_RB_DL=25;
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uint32_t pucch_tx=0,pucch1_missed=0,pucch1_false=0,pucch3_false=0,sig;
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PUCCH_FMT_t pucch_format = pucch_format1;
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PUCCH_CONFIG_DEDICATED pucch_config_dedicated;
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uint8_t subframe=0;
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uint8_t pucch_payload,pucch_payload_rx;
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uint8_t pucch3_payload_size=7;
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uint8_t pucch3_payload[21],pucch3_payload_rx[21];
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double tx_gain=1.0;
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int32_t stat;
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double stat_no_sig,stat_sig;
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uint8_t N0=40;
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uint8_t pucch1_thres=10;
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uint16_t n1_pucch = 0;
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uint16_t n2_pucch = 0;
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uint16_t n3_pucch = 20;
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uint16_t n_rnti=0x1234;
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number_of_cards = 1;
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cpuf = get_cpu_freq_GHz();
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while ((c = getopt (argc, argv, "har:pf:g:n:s:S:x:y:z:N:F:T:R:")) != -1) {
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switch (c) {
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case 'a':
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printf("Running AWGN simulation\n");
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channel_model = AWGN;
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ntrials=1;
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break;
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case 'f':
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if (atoi(optarg)==0)
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pucch_format = pucch_format1;
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else if (atoi(optarg)==1)
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pucch_format = pucch_format1a;
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else if (atoi(optarg)==2)
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pucch_format = pucch_format1b;
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else if (atoi(optarg)==6) // 3,4,5 is reserved for format2,2a,2b
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pucch_format = pucch_format3;
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else {
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printf("Unsupported pucch_format %d\n",atoi(optarg));
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exit(-1);
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}
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break;
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case 'g':
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switch((char)*optarg) {
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case 'A':
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channel_model=SCM_A;
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break;
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case 'B':
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channel_model=SCM_B;
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break;
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case 'C':
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channel_model=SCM_C;
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break;
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case 'D':
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channel_model=SCM_D;
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break;
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case 'E':
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channel_model=EPA;
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break;
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case 'F':
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channel_model=EVA;
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break;
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case 'G':
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channel_model=ETU;
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break;
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case 'H':
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channel_model=Rayleigh8;
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case 'I':
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channel_model=Rayleigh1;
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case 'J':
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channel_model=Rayleigh1_corr;
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case 'K':
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channel_model=Rayleigh1_anticorr;
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case 'L':
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channel_model=Rice8;
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case 'M':
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channel_model=Rice1;
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break;
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default:
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printf("Unsupported channel model!\n");
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exit(-1);
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}
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break;
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case 'n':
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n_frames = atoi(optarg);
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break;
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case 's':
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snr0 = atof(optarg);
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printf("Setting SNR0 to %f\n",snr0);
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break;
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case 'S':
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snr1 = atof(optarg);
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snr1set=1;
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printf("Setting SNR1 to %f\n",snr1);
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break;
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case 'p':
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extended_prefix_flag=1;
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break;
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case 'r':
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ricean_factor = pow(10,-.1*atof(optarg));
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if (ricean_factor>1) {
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printf("Ricean factor must be between 0 and 1\n");
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exit(-1);
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}
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break;
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case 'x':
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transmission_mode=atoi(optarg);
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if ((transmission_mode!=1) &&
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(transmission_mode!=2) &&
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(transmission_mode!=6)) {
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printf("Unsupported transmission mode %d\n",transmission_mode);
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exit(-1);
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}
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break;
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case 'y':
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n_tx=atoi(optarg);
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if ((n_tx==0) || (n_tx>2)) {
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printf("Unsupported number of tx antennas %d\n",n_tx);
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exit(-1);
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}
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break;
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case 'z':
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n_rx=atoi(optarg);
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if ((n_rx==0) || (n_rx>2)) {
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printf("Unsupported number of rx antennas %d\n",n_rx);
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exit(-1);
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}
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break;
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case 'N':
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N0 = atoi(optarg);
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break;
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case 'T':
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pucch1_thres = atoi(optarg);
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break;
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case 'R':
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N_RB_DL = atoi(optarg);
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break;
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case 'O':
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osf = atoi(optarg);
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break;
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case 'F':
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break;
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default:
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case 'h':
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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 -t Delayspread -r Ricean_FactordB -s snr0 -S snr1 -x transmission_mode -y TXant -z RXant -N CellId\n",
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argv[0]);
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printf("-h This message\n");
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printf("-a Use AWGN channel and not multipath\n");
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printf("-p Use extended prefix mode\n");
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printf("-n Number of frames to simulate\n");
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printf("-r Ricean factor (dB, 0 means Rayleigh, 100 is almost AWGN\n");
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printf("-s Starting SNR, runs from SNR0 to SNR0 + 5 dB. If n_frames is 1 then just SNR is simulated\n");
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printf("-S Ending SNR, runs from SNR0 to SNR1\n");
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printf("-t Delay spread for multipath channel\n");
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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");
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printf("-x Transmission mode (1,2,6 for the moment)\n");
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printf("-y Number of TX antennas used in eNB\n");
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printf("-z Number of RX antennas used in UE\n");
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printf("-i Relative strength of first intefering eNB (in dB) - cell_id mod 3 = 1\n");
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printf("-j Relative strength of second intefering eNB (in dB) - cell_id mod 3 = 2\n");
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printf("-N Noise variance in dB\n");
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printf("-R N_RB_DL\n");
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printf("-O oversampling factor (1,2,4,8,16)\n");
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printf("-f PUCCH format (0=1,1=1a,2=1b,6=3), formats 2/2a/2b not supported\n");
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printf("-F Input filename (.txt format) for RX conformance testing\n");
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exit (-1);
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break;
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}
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}
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logInit();
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itti_init(TASK_MAX, THREAD_MAX, MESSAGES_ID_MAX, tasks_info, messages_info, messages_definition_xml, NULL);
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g_log->log_component[PHY].level = LOG_DEBUG;
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g_log->log_component[PHY].flag = LOG_HIGH;
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if (transmission_mode==2)
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n_tx=2;
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lte_param_init(n_tx,
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n_tx,
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n_rx,
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transmission_mode,
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extended_prefix_flag,
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FDD,
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Nid_cell,
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3,
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N_RB_DL,
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0,
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osf,
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0);
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if (snr1set==0) {
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if (n_frames==1)
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snr1 = snr0+.1;
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else
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snr1 = snr0+5.0;
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}
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printf("SNR0 %f, SNR1 %f\n",snr0,snr1);
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frame_parms = &eNB->frame_parms;
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txdata = eNB->common_vars.txdata[eNB_id];
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nsymb = (frame_parms->Ncp == 0) ? 14 : 12;
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printf("FFT Size %d, Extended Prefix %d, Samples per subframe %d, Symbols per subframe %d\n",NUMBER_OF_OFDM_CARRIERS,
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frame_parms->Ncp,frame_parms->samples_per_tti,nsymb);
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printf("[SIM] Using SCM/101\n");
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UE2eNB = new_channel_desc_scm(eNB->frame_parms.nb_antennas_tx,
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UE->frame_parms.nb_antennas_rx,
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channel_model,
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N_RB2sampling_rate(eNB->frame_parms.N_RB_UL),
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N_RB2channel_bandwidth(eNB->frame_parms.N_RB_UL),
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0.0,
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0,
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0);
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if (UE2eNB==NULL) {
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printf("Problem generating channel model. Exiting.\n");
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exit(-1);
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}
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init_ncs_cell(&eNB->frame_parms,eNB->ncs_cell);
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init_ncs_cell(&UE->frame_parms,UE->ncs_cell);
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init_ul_hopping(&eNB->frame_parms);
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init_ul_hopping(&UE->frame_parms);
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eNB->frame_parms.pucch_config_common.deltaPUCCH_Shift = 2;
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eNB->frame_parms.pucch_config_common.nRB_CQI = 4;
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eNB->frame_parms.pucch_config_common.nCS_AN = 6;
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UE->frame_parms.pucch_config_common.deltaPUCCH_Shift = 2;
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UE->frame_parms.pucch_config_common.nRB_CQI = 4;
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UE->frame_parms.pucch_config_common.nCS_AN = 6;
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if( (pucch_format == pucch_format1) || (pucch_format == pucch_format1a) || (pucch_format == pucch_format1b) ){
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pucch_payload = 0;
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generate_pucch1x(UE->common_vars.txdataF,
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frame_parms,
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UE->ncs_cell,
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pucch_format,
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&pucch_config_dedicated,
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n1_pucch,
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0, //shortened_format,
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&pucch_payload,
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AMP, //amp,
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subframe); //subframe
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}else if( pucch_format == pucch_format3){
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for(i=0;i<pucch3_payload_size;i++)
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pucch3_payload[i]=(uint8_t)(taus()&0x1);
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generate_pucch3x(UE->common_vars.txdataF,
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frame_parms,
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UE->ncs_cell,
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pucch_format,
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&pucch_config_dedicated,
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n3_pucch,
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0, //shortened_format,
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pucch3_payload,
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AMP, //amp,
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subframe, //subframe
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n_rnti); //rnti
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}
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write_output("txsigF0.m","txsF0", &UE->common_vars.txdataF[0][2*subframe*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX],OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX*nsymb,1,1);
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tx_lev = 0;
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for (aa=0; aa<eNB->frame_parms.nb_antennas_tx; aa++) {
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if (frame_parms->Ncp == 1)
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PHY_ofdm_mod(&UE->common_vars.txdataF[aa][2*subframe*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX], // input,
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&txdata[aa][eNB->frame_parms.samples_per_tti*subframe], // output
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frame_parms->ofdm_symbol_size,
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nsymb, // number of symbols
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frame_parms->nb_prefix_samples, // number of prefix samples
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CYCLIC_PREFIX);
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else {
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normal_prefix_mod(&UE->common_vars.txdataF[eNB_id][subframe*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX],
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&txdata[aa][eNB->frame_parms.samples_per_tti*subframe],
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nsymb,
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frame_parms);
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//apply_7_5_kHz(UE,UE->common_vars.txdata[aa],subframe<<1);
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//apply_7_5_kHz(UE,UE->common_vars.txdata[aa],1+(subframe<<1));
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apply_7_5_kHz(UE,&txdata[aa][eNB->frame_parms.samples_per_tti*subframe],0);
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apply_7_5_kHz(UE,&txdata[aa][eNB->frame_parms.samples_per_tti*subframe],1);
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}
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tx_lev += signal_energy(&txdata[aa][subframe*eNB->frame_parms.samples_per_tti],
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OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES);
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}
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write_output("txsig0.m","txs0", txdata[0], FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
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//write_output("txsig1.m","txs1", txdata[1],FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
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// multipath channel
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for (i=0; i<2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES; i++) {
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for (aa=0; aa<eNB->frame_parms.nb_antennas_tx; aa++) {
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s_re[aa][i] = ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_tti]))[(i<<1)]);
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s_im[aa][i] = ((double)(((short *)&txdata[aa][subframe*frame_parms->samples_per_tti]))[(i<<1)+1]);
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}
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}
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for (SNR=snr0; SNR<snr1; SNR+=.2) {
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printf("n_frames %d SNR %f\n",n_frames,SNR);
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n_errors = 0;
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pucch_tx = 0;
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pucch1_missed=0;
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pucch1_false=0;
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pucch3_false=0;
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stat_no_sig = 0;
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stat_sig = 0;
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for (trial=0; trial<n_frames; trial++) {
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multipath_channel(UE2eNB,s_re,s_im,r_re,r_im,
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eNB->frame_parms.samples_per_tti,0);
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sigma2_dB = N0;//10*log10((double)tx_lev) - SNR;
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tx_gain = sqrt(pow(10.0,.1*(N0+SNR))/(double)tx_lev);
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if (n_frames==1)
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printf("sigma2_dB %f (SNR %f dB) tx_lev_dB %f,tx_gain %f (%f dB)\n",sigma2_dB,SNR,10*log10((double)tx_lev),tx_gain,20*log10(tx_gain));
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//AWGN
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sigma2 = pow(10,sigma2_dB/10);
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// printf("Sigma2 %f (sigma2_dB %f)\n",sigma2,sigma2_dB);
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if (n_frames==1) {
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printf("rx_level data symbol %f, tx_lev %f\n",
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10*log10(signal_energy_fp(r_re,r_im,1,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES,0)),
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10*log10(tx_lev));
|
|
}
|
|
|
|
if (pucch_format != pucch_format1) {
|
|
pucch_tx++;
|
|
sig=1;
|
|
} else {
|
|
if (trial<(n_frames>>1)) {
|
|
//printf("no sig =>");
|
|
sig= 0;
|
|
} else {
|
|
sig=1;
|
|
//printf("sig =>");
|
|
pucch_tx++;
|
|
}
|
|
}
|
|
|
|
// sig = 1;
|
|
for (n_trials=0; n_trials<ntrials; n_trials++) {
|
|
//printf("n_trial %d\n",n_trials);
|
|
// fill measurement symbol (19) with noise
|
|
for (i=0; i<OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES; i++) {
|
|
for (aa=0; aa<eNB->frame_parms.nb_antennas_rx; aa++) {
|
|
|
|
((short*) &eNB->common_vars.rxdata[0][aa][(frame_parms->samples_per_tti<<1) -frame_parms->ofdm_symbol_size])[2*i] = (short) ((sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
|
|
((short*) &eNB->common_vars.rxdata[0][aa][(frame_parms->samples_per_tti<<1) -frame_parms->ofdm_symbol_size])[2*i+1] = (short) ((sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
|
|
}
|
|
}
|
|
|
|
|
|
|
|
for (i=0; i<2*nsymb*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES; i++) {
|
|
for (aa=0; aa<eNB->frame_parms.nb_antennas_rx; aa++) {
|
|
if (n_trials==0) {
|
|
// r_re[aa][i] += (pow(10.0,.05*interf1)*r_re1[aa][i] + pow(10.0,.05*interf2)*r_re2[aa][i]);
|
|
// r_im[aa][i] += (pow(10.0,.05*interf1)*r_im1[aa][i] + pow(10.0,.05*interf2)*r_im2[aa][i]);
|
|
}
|
|
|
|
|
|
if (sig==1) {
|
|
((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i] = (short) (((tx_gain*r_re[aa][i]) +sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
|
|
((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i+1] = (short) (((tx_gain*r_im[aa][i]) + (iqim*r_re[aa][i]*tx_gain) + sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
|
|
} else {
|
|
((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i] = (short) ((sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
|
|
((short*) &eNB->common_vars.rxdata[0][aa][subframe*frame_parms->samples_per_tti])[2*i+1] = (short) ((sqrt(sigma2/2)*gaussdouble(0.0,1.0)));
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
remove_7_5_kHz(eNB,subframe<<1);
|
|
remove_7_5_kHz(eNB,1+(subframe<<1));
|
|
|
|
for (l=0; l<eNB->frame_parms.symbols_per_tti/2; l++) {
|
|
|
|
slot_fep_ul(&eNB->frame_parms,
|
|
&eNB->common_vars,
|
|
l,
|
|
subframe*2,// slot
|
|
0,
|
|
0
|
|
);
|
|
slot_fep_ul(&eNB->frame_parms,
|
|
&eNB->common_vars,
|
|
l,
|
|
1+(subframe*2),//slot
|
|
0,
|
|
0
|
|
);
|
|
|
|
|
|
}
|
|
|
|
|
|
// if (sig == 1)
|
|
// printf("*");
|
|
lte_eNB_I0_measurements(eNB,
|
|
subframe,
|
|
0,
|
|
1);
|
|
eNB->measurements[0].n0_power_tot_dB = N0;//(int8_t)(sigma2_dB-10*log10(eNB->frame_parms.ofdm_symbol_size/(12*NB_RB)));
|
|
stat = rx_pucch(eNB,
|
|
pucch_format,
|
|
0,
|
|
n1_pucch,
|
|
n2_pucch,
|
|
0, //shortened_format,
|
|
(pucch_format==pucch_format3) ? pucch3_payload_rx : &pucch_payload_rx, //payload,
|
|
0 /* frame not defined, let's pass 0 */,
|
|
subframe,
|
|
pucch1_thres);
|
|
|
|
if (trial < (n_frames>>1)) {
|
|
stat_no_sig += (2*(double)stat/n_frames);
|
|
// printf("stat (no_sig) %f\n",stat_no_sig);
|
|
} else {
|
|
stat_sig += (2*(double)stat/n_frames);
|
|
// printf("stat (sig) %f\n",stat_sig);
|
|
}
|
|
|
|
if (pucch_format==pucch_format1) {
|
|
pucch1_missed = ((pucch_payload_rx == 0) && (sig==1)) ? (pucch1_missed+1) : pucch1_missed;
|
|
pucch1_false = ((pucch_payload_rx == 1) && (sig==0)) ? (pucch1_false+1) : pucch1_false;
|
|
/*
|
|
if ((pucch_payload_rx == 0) && (sig==1)) {
|
|
printf("EXIT\n");
|
|
exit(-1);
|
|
}*/
|
|
} else if( (pucch_format==pucch_format1a) || (pucch_format==pucch_format1b) ) {
|
|
pucch1_false = (pucch_payload_rx != pucch_payload) ? (pucch1_false+1) : pucch1_false;
|
|
} else if (pucch_format==pucch_format3){
|
|
for(i=0;i<pucch3_payload_size;i++){
|
|
if(pucch3_payload[i]!=pucch3_payload_rx[i]){
|
|
pucch3_false = (pucch3_false+1);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// printf("sig %d\n",sig);
|
|
} // NSR
|
|
}
|
|
|
|
if (pucch_format==pucch_format1)
|
|
printf("pucch_trials %d : pucch1_false %d,pucch1_missed %d, N0 %d dB, stat_no_sig %f dB, stat_sig %f dB\n",pucch_tx,pucch1_false,pucch1_missed,eNB->measurements[0].n0_power_tot_dB,
|
|
10*log10(stat_no_sig),10*log10(stat_sig));
|
|
else if (pucch_format==pucch_format1a)
|
|
printf("pucch_trials %d : pucch1a_errors %d\n",pucch_tx,pucch1_false);
|
|
else if (pucch_format==pucch_format1b)
|
|
printf("pucch_trials %d : pucch1b_errors %d\n",pucch_tx,pucch1_false);
|
|
else if (pucch_format==pucch_format3)
|
|
printf("pucch_trials %d : pucch3_errors %d\n",pucch_tx,pucch3_false);
|
|
}
|
|
|
|
if (n_frames==1) {
|
|
//write_output("txsig0.m","txs0", &txdata[0][subframe*frame_parms->samples_per_tti],frame_parms->samples_per_tti,1,1);
|
|
write_output("txsig0pucch.m", "txs0", &txdata[0][0], FRAME_LENGTH_COMPLEX_SAMPLES,1,1);
|
|
write_output("rxsig0.m","rxs0", &eNB->common_vars.rxdata[0][0][subframe*frame_parms->samples_per_tti],frame_parms->samples_per_tti,1,1);
|
|
write_output("rxsigF0.m","rxsF0", &eNB->common_vars.rxdataF[0][0][0],512*nsymb*2,2,1);
|
|
}
|
|
|
|
|
|
lte_sync_time_free();
|
|
|
|
return(n_errors);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
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);
|
|
*/
|
|
|