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openairinterface5g/openair1/USERSPACE_TOOLS/OPENAIR_RF/openair_generate_ofdm.c
T
ghaddab 56c3197b09 License Corrected 
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5713 818b1a75-f10b-46b9-bf7c-635c3b92a50f
2014-08-13 16:22:56 +00:00

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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
*******************************************************************************/
#include <string.h>
#include "PHY/types.h"
#include "PHY/defs.h"
#include "PHY/extern.h"
#ifdef OPENAIR_LTE
#include "PHY/LTE_TRANSPORT/defs.h"
#endif
void openair_generate_ofdm(TX_VARS *TX_vars,char format,unsigned short freq_alloc,char *pdu) {
unsigned int i,l;
unsigned char level;
#ifdef OPENAIR_LTE
mod_sym_t **txdataF;
unsigned char pbch_pdu[6];
unsigned int rv;
#endif
switch (format) {
#ifndef OPENAIR_LTE
case 0 : // generate CHSCH + CHBCH (10 symbols out of 64)
printf("Generate OFDM: CHSCH0,CHSCH1 + CHBCH\n");
phy_generate_chbch(1,0,NB_ANTENNAS_TX,pdu);
break;
case 1: // generate all SCH 0 repeated in frame (64 symbols)
printf("Generate OFDM: SCH (symbols 0..63)\n");
for (i=0;i<NUMBER_OF_SYMBOLS_PER_FRAME;i+=3)
phy_generate_sch(0,0,i,freq_alloc,0,NB_ANTENNAS_TX);
break;
case 2: // generate all CHSCH repeated in frame (64 symbols)
printf("Generate OFDM: CHSCH0 (symbols 0..63)\n");
phy_generate_chbch(1,0,NB_ANTENNAS_TX,pdu);
for (i=1;i<NUMBER_OF_SYMBOLS_PER_FRAME;i++)
memcpy((void *)&TX_vars->TX_DMA_BUFFER[i*OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES_NO_PREFIX*2],
(void *)&TX_vars->TX_DMA_BUFFER[0],
OFDM_SYMBOL_SIZE_SAMPLES_NO_PREFIX*2);
break;
#else
case 3:
/*
lte_ue_common_vars = &(PHY_vars->lte_ue_common_vars);
lte_ue_dlsch_vars = &(PHY_vars->lte_ue_dlsch_vars[0]);
lte_ue_pbch_vars = &(PHY_vars->lte_ue_pbch_vars[0]);
*/
lte_eNB_common_vars = &PHY_vars->lte_eNB_common_vars;
lte_eNB_ulsch_vars = &(PHY_vars->lte_eNB_ulsch_vars[0]);
phy_init_top(NB_ANTENNAS_TX);
TX_vars->TX_DMA_BUFFER[0] = (mod_sym_t *)TX_DMA_BUFFER[0][0];
TX_vars->TX_DMA_BUFFER[1] = (mod_sym_t *)TX_DMA_BUFFER[0][1];
lte_frame_parms->twiddle_fft = twiddle_fft;
lte_frame_parms->twiddle_ifft = twiddle_ifft;
lte_frame_parms->rev = rev;
lte_gold(lte_frame_parms);
phy_init_lte_eNB(lte_frame_parms, lte_eNB_common_vars, lte_eNB_ulsch_vars);
generate_pss(lte_eNB_common_vars->txdataF[0],
256,
lte_frame_parms,
0,
5,
0);
for (i=0; i<20; i++)
generate_pilots_slot(lte_eNB_common_vars->txdataF[0],
256,
lte_frame_parms,
0,
i);
for (i=0;i<6;i++)
pbch_pdu[i] = i;
generate_pbch(lte_eNB_common_vars->txdataF[0],
256,
lte_frame_parms,
pbch_pdu);
#ifdef IFFT_FPGA
write_output("pilotsF.m","rsF",lte_eNB_common_vars->txdataF[0],12*lte_frame_parms->N_RB_DL*12,1,4);
#else
write_output("pilotsF.m","rsF",lte_eNB_common_vars->txdataF[0],lte_frame_parms->ofdm_symbol_size,1,1);
#endif
#ifndef IFFT_FPGA
PHY_ofdm_mod(lte_eNB_common_vars->txdataF[0], // input
lte_eNB_common_vars->txdata[0], // output
lte_frame_parms->log2_symbol_size, // log2_fft_size
12*LTE_NUMBER_OF_SUBFRAMES_PER_FRAME, // number of symbols
lte_frame_parms->nb_prefix_samples, // number of prefix samples
lte_frame_parms->twiddle_ifft, // IFFT twiddle factors
lte_frame_parms->rev, // bit-reversal permutation
NONE);
PHY_ofdm_mod(lte_eNB_common_vars->txdataF[1], // input
lte_eNB_common_vars->txdata[1], // output
lte_frame_parms->log2_symbol_size, // log2_fft_size
12*LTE_NUMBER_OF_SUBFRAMES_PER_FRAME, // number of symbols
lte_frame_parms->nb_prefix_samples, // number of prefix samples
lte_frame_parms->twiddle_ifft, // IFFT twiddle factors
lte_frame_parms->rev, // bit-reversal permutation
NONE);
//write_output("pss.m","pss0", PHY_vars->tx_vars[0].TX_DMA_BUFFER,FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX,1,1);
write_output("pss.m","pss0", TX_vars->TX_DMA_BUFFER[0],FRAME_LENGTH_COMPLEX_SAMPLES_NO_PREFIX,1,5);
free(txdataF[0]);
free(txdataF[1]);
#endif //IFFT_FPGA
free(txdataF);
break;
case 4:
phy_init_top(2);
printf("TX_DMA_BUFFER[0] = %p, TX_DMA_BUFFER[1] = %p\n",
TX_DMA_BUFFER[0][0],TX_DMA_BUFFER[0][1]);
TX_vars->TX_DMA_BUFFER[0] = (mod_sym_t *)TX_DMA_BUFFER[0][0];
TX_vars->TX_DMA_BUFFER[1] = (mod_sym_t *)TX_DMA_BUFFER[0][1];
for (l=1;l<120;l++) {
for (i=0;i<75;i+=3) {
rv = ptaus();
rv = rv & 0x03030303;
((unsigned char*)&rv)[0] = ((unsigned char*)&rv)[0]+1;
((unsigned char*)&rv)[1] = ((unsigned char*)&rv)[1]+1;
((unsigned char*)&rv)[2] = ((unsigned char*)&rv)[2]+1;
((unsigned char*)&rv)[3] = ((unsigned char*)&rv)[3]+1;
((unsigned int *)TX_vars->TX_DMA_BUFFER[0])[l*75+i] = rv;
((unsigned int *)TX_vars->TX_DMA_BUFFER[1])[l*75+i] = rv;
rv = ptaus();
rv = rv & 0x03030303;
((unsigned char*)&rv)[0] = ((unsigned char*)&rv)[0]+1;
((unsigned char*)&rv)[1] = ((unsigned char*)&rv)[1]+1;
((unsigned char*)&rv)[2] = ((unsigned char*)&rv)[2]+1;
((unsigned char*)&rv)[3] = ((unsigned char*)&rv)[3]+1;
((unsigned int *)TX_vars->TX_DMA_BUFFER[0])[l*75+i+1] = rv;
((unsigned int *)TX_vars->TX_DMA_BUFFER[1])[l*75+i+1] = rv;
rv = ptaus();
rv = rv & 0x03030303;
((unsigned char*)&rv)[0] = ((unsigned char*)&rv)[0]+1;
((unsigned char*)&rv)[1] = ((unsigned char*)&rv)[1]+1;
((unsigned char*)&rv)[2] = ((unsigned char*)&rv)[2]+1;
((unsigned char*)&rv)[3] = ((unsigned char*)&rv)[3]+1;
((unsigned int *)TX_vars->TX_DMA_BUFFER[0])[l*75+i+2] = rv;
((unsigned int *)TX_vars->TX_DMA_BUFFER[1])[l*75+i+2] = rv;
}
}
#endif // OPENAIR_LTE
default:
break;
}
}
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