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astyle --recursive --indent=spaces=2 --style=kr --indent-col1-comments --break-blocks --convert-tabs --max-code-length=200

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This is done for better merging branch/LG_PRE_RELEASE_0.3 into trunk (same process is applied on this branch)

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7073 818b1a75-f10b-46b9-bf7c-635c3b92a50f
This commit is contained in:
Lionel Gauthier
2015-04-09 09:29:12 +00:00
parent f0a8a0b3b5
commit 059a0a3fdc
2044 changed files with 1182666 additions and 1145123 deletions
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openair1/PHY/MODULATION/ofdm_mod.c
+124 -114
View File
@@ -1,5 +1,5 @@
/*******************************************************************************
OpenAirInterface
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
@@ -14,15 +14,15 @@
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,
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
*******************************************************************************/
@@ -38,13 +38,14 @@ This section deals with basic functions for OFDM Modulation.
#include "PHY/defs.h"
#include "UTIL/LOG/log.h"
//static short temp2[2048*4] __attribute__((aligned(16)));
//#define DEBUG_OFDM_MOD
void normal_prefix_mod(int32_t *txdataF,int32_t *txdata,uint8_t nsymb,LTE_DL_FRAME_PARMS *frame_parms) {
void normal_prefix_mod(int32_t *txdataF,int32_t *txdata,uint8_t nsymb,LTE_DL_FRAME_PARMS *frame_parms)
{
uint8_t i;
int short_offset=0;
@@ -53,47 +54,48 @@ void normal_prefix_mod(int32_t *txdataF,int32_t *txdata,uint8_t nsymb,LTE_DL_FRA
short_offset = 1;
// printf("nsymb %d\n",nsymb);
for (i=0;i<((short_offset)+2*nsymb/frame_parms->symbols_per_tti);i++) {
for (i=0; i<((short_offset)+2*nsymb/frame_parms->symbols_per_tti); i++) {
#ifdef DEBUG_OFDM_MOD
printf("slot i %d (txdata offset %d, txoutput %p)\n",i,(i*(frame_parms->samples_per_tti>>1)),
txdata+(i*(frame_parms->samples_per_tti>>1)));
printf("slot i %d (txdata offset %d, txoutput %p)\n",i,(i*(frame_parms->samples_per_tti>>1)),
txdata+(i*(frame_parms->samples_per_tti>>1)));
#endif
PHY_ofdm_mod(txdataF+(i*NUMBER_OF_OFDM_CARRIERS*frame_parms->symbols_per_tti>>1), // input
txdata+(i*frame_parms->samples_per_tti>>1), // output
frame_parms->log2_symbol_size, // log2_fft_size
1, // number of symbols
frame_parms->nb_prefix_samples0, // number of prefix samples
frame_parms->twiddle_ifft, // IFFT twiddle factors
frame_parms->rev, // bit-reversal permutation
CYCLIC_PREFIX);
txdata+(i*frame_parms->samples_per_tti>>1), // output
frame_parms->log2_symbol_size, // log2_fft_size
1, // number of symbols
frame_parms->nb_prefix_samples0, // number of prefix samples
frame_parms->twiddle_ifft, // IFFT twiddle factors
frame_parms->rev, // bit-reversal permutation
CYCLIC_PREFIX);
#ifdef DEBUG_OFDM_MOD
printf("slot i %d (txdata offset %d)\n",i,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES0+(i*frame_parms->samples_per_tti>>1));
#endif
printf("slot i %d (txdata offset %d)\n",i,OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES0+(i*frame_parms->samples_per_tti>>1));
#endif
PHY_ofdm_mod(txdataF+NUMBER_OF_OFDM_CARRIERS+(i*NUMBER_OF_OFDM_CARRIERS*(frame_parms->symbols_per_tti>>1)), // input
txdata+OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES0+(i*(frame_parms->samples_per_tti>>1)), // output
frame_parms->log2_symbol_size, // log2_fft_size
(short_offset==1) ? 1 :(frame_parms->symbols_per_tti>>1)-1,//6, // number of symbols
frame_parms->nb_prefix_samples, // number of prefix samples
frame_parms->twiddle_ifft, // IFFT twiddle factors
frame_parms->rev, // bit-reversal permutation
CYCLIC_PREFIX);
txdata+OFDM_SYMBOL_SIZE_COMPLEX_SAMPLES0+(i*(frame_parms->samples_per_tti>>1)), // output
frame_parms->log2_symbol_size, // log2_fft_size
(short_offset==1) ? 1 :(frame_parms->symbols_per_tti>>1)-1,//6, // number of symbols
frame_parms->nb_prefix_samples, // number of prefix samples
frame_parms->twiddle_ifft, // IFFT twiddle factors
frame_parms->rev, // bit-reversal permutation
CYCLIC_PREFIX);
}
}
void PHY_ofdm_mod(int *input, /// pointer to complex input
int *output, /// pointer to complex output
unsigned char log2fftsize, /// log2(FFT_SIZE)
unsigned char nb_symbols, /// number of OFDM symbols
unsigned short nb_prefix_samples, /// cyclic prefix length
short *twiddle_ifft, /// pointer to precomputed twiddle table
unsigned short *rev, /// pointer to bit-reversal table
Extension_t etype /// type of extension
) {
int *output, /// pointer to complex output
unsigned char log2fftsize, /// log2(FFT_SIZE)
unsigned char nb_symbols, /// number of OFDM symbols
unsigned short nb_prefix_samples, /// cyclic prefix length
short *twiddle_ifft, /// pointer to precomputed twiddle table
unsigned short *rev, /// pointer to bit-reversal table
Extension_t etype /// type of extension
)
{
static short temp[2048*4] __attribute__((aligned(16)));
unsigned short i,j;
@@ -108,18 +110,23 @@ void PHY_ofdm_mod(int *input, /// pointer to complex input
case 7:
idft = idft128;
break;
case 8:
idft = idft256;
break;
case 9:
idft = idft512;
break;
case 10:
idft = idft1024;
break;
case 11:
idft = idft2048;
break;
default:
idft = idft512;
break;
@@ -131,61 +138,63 @@ void PHY_ofdm_mod(int *input, /// pointer to complex input
#endif
for (i=0;i<nb_symbols;i++){
for (i=0; i<nb_symbols; i++) {
#ifdef DEBUG_OFDM_MOD
msg("[PHY] symbol %d/%d (%p,%p -> %p)\n",i,nb_symbols,input,&input[i<<log2fftsize],&output[(i<<log2fftsize) + ((i)*nb_prefix_samples)]);
#endif
idft((int16_t *)&input[i<<log2fftsize],
(log2fftsize==7) ? (int16_t *)temp : (int16_t *)&output[(i<<log2fftsize) + ((1+i)*nb_prefix_samples)],
1);
(log2fftsize==7) ? (int16_t *)temp : (int16_t *)&output[(i<<log2fftsize) + ((1+i)*nb_prefix_samples)],
1);
// write_output("fft_out.m","fftout",temp,(1<<log2fftsize)*2,1,1);
//memset(temp,0,1<<log2fftsize);
// Copy to frame buffer with Cyclic Extension
// Note: will have to adjust for synchronization offset!
switch (etype) {
case CYCLIC_PREFIX:
output_ptr = &output[(i<<log2fftsize) + ((1+i)*nb_prefix_samples)];
temp_ptr = (int *)temp;
// msg("Doing cyclic prefix method\n");
if (log2fftsize==7) {
for (j=0;j<((1<<log2fftsize)) ; j++) {
output_ptr[j] = temp_ptr[j];
}
for (j=0; j<((1<<log2fftsize)) ; j++) {
output_ptr[j] = temp_ptr[j];
}
}
j=(1<<log2fftsize);
for (k=-1;k>=-nb_prefix_samples;k--) {
output_ptr[k] = output_ptr[--j];
for (k=-1; k>=-nb_prefix_samples; k--) {
output_ptr[k] = output_ptr[--j];
}
break;
case CYCLIC_SUFFIX:
output_ptr = &output[(i<<log2fftsize)+ (i*nb_prefix_samples)];
temp_ptr = (int *)temp;
// msg("Doing cyclic suffix method\n");
for (j=0;j<(1<<log2fftsize) ; j++) {
output_ptr[j] = temp_ptr[2*j];
for (j=0; j<(1<<log2fftsize) ; j++) {
output_ptr[j] = temp_ptr[2*j];
}
for (j=0;j<nb_prefix_samples;j++)
output_ptr[(1<<log2fftsize)+j] = output_ptr[j];
for (j=0; j<nb_prefix_samples; j++)
output_ptr[(1<<log2fftsize)+j] = output_ptr[j];
break;
case ZEROS:
@@ -198,9 +207,9 @@ void PHY_ofdm_mod(int *input, /// pointer to complex input
output_ptr = &output[(i<<log2fftsize)];
temp_ptr = (int *)temp;
for (j=0;j<(1<<log2fftsize) ; j++) {
output_ptr[j] = temp_ptr[2*j];
for (j=0; j<(1<<log2fftsize) ; j++) {
output_ptr[j] = temp_ptr[2*j];
}
@@ -211,78 +220,79 @@ void PHY_ofdm_mod(int *input, /// pointer to complex input
break;
}
}
/*
printf("input %p, output %p, log2fftsize %d, nsymb %d\n",input,output,log2fftsize,nb_symbols);
for (i=0;i<16;i++)
printf("%d %d\n",((short *)input)[i<<1],((short *)input)[1+(i<<1)]);
printf("------\n");
for (i=0;i<16;i++)
printf("%d %d\n",((short *)output)[i<<1],((short *)output)[1+(i<<1)]);
printf("%d %d\n",((short *)output)[i<<1],((short *)output)[1+(i<<1)]);
*/
}
void do_OFDM_mod(mod_sym_t **txdataF, int32_t **txdata, uint32_t frame,uint16_t next_slot, LTE_DL_FRAME_PARMS *frame_parms) {
void do_OFDM_mod(mod_sym_t **txdataF, int32_t **txdata, uint32_t frame,uint16_t next_slot, LTE_DL_FRAME_PARMS *frame_parms)
{
int aa, slot_offset, slot_offset_F;
slot_offset_F = (next_slot)*(frame_parms->ofdm_symbol_size)*((frame_parms->Ncp==1) ? 6 : 7);
slot_offset = (next_slot)*(frame_parms->samples_per_tti>>1);
for (aa=0; aa<frame_parms->nb_antennas_tx; aa++) {
if (is_pmch_subframe(frame,next_slot>>1,frame_parms)) {
if (is_pmch_subframe(frame,next_slot>>1,frame_parms)) {
if ((next_slot%2)==0) {
LOG_D(PHY,"Frame %d, subframe %d: Doing MBSFN modulation (slot_offset %d)\n",frame,next_slot>>1,slot_offset);
PHY_ofdm_mod(&txdataF[aa][slot_offset_F], // input
&txdata[aa][slot_offset], // output
frame_parms->log2_symbol_size, // log2_fft_size
12, // number of symbols
frame_parms->ofdm_symbol_size>>2, // number of prefix samples
frame_parms->twiddle_ifft, // IFFT twiddle factors
frame_parms->rev, // bit-reversal permutation
CYCLIC_PREFIX);
if (frame_parms->Ncp == EXTENDED)
PHY_ofdm_mod(&txdataF[aa][slot_offset_F], // input
&txdata[aa][slot_offset], // output
frame_parms->log2_symbol_size, // log2_fft_size
2, // number of symbols
frame_parms->nb_prefix_samples, // number of prefix samples
frame_parms->twiddle_ifft, // IFFT twiddle factors
frame_parms->rev, // bit-reversal permutation
CYCLIC_PREFIX);
else {
LOG_D(PHY,"Frame %d, subframe %d: Doing PDCCH modulation\n",frame,next_slot>>1);
normal_prefix_mod(&txdataF[aa][slot_offset_F],
&txdata[aa][slot_offset],
2,
frame_parms);
}
LOG_D(PHY,"Frame %d, subframe %d: Doing MBSFN modulation (slot_offset %d)\n",frame,next_slot>>1,slot_offset);
PHY_ofdm_mod(&txdataF[aa][slot_offset_F], // input
&txdata[aa][slot_offset], // output
frame_parms->log2_symbol_size, // log2_fft_size
12, // number of symbols
frame_parms->ofdm_symbol_size>>2, // number of prefix samples
frame_parms->twiddle_ifft, // IFFT twiddle factors
frame_parms->rev, // bit-reversal permutation
CYCLIC_PREFIX);
if (frame_parms->Ncp == EXTENDED)
PHY_ofdm_mod(&txdataF[aa][slot_offset_F], // input
&txdata[aa][slot_offset], // output
frame_parms->log2_symbol_size, // log2_fft_size
2, // number of symbols
frame_parms->nb_prefix_samples, // number of prefix samples
frame_parms->twiddle_ifft, // IFFT twiddle factors
frame_parms->rev, // bit-reversal permutation
CYCLIC_PREFIX);
else {
LOG_D(PHY,"Frame %d, subframe %d: Doing PDCCH modulation\n",frame,next_slot>>1);
normal_prefix_mod(&txdataF[aa][slot_offset_F],
&txdata[aa][slot_offset],
2,
frame_parms);
}
}
} else {
if (frame_parms->Ncp == EXTENDED)
PHY_ofdm_mod(&txdataF[aa][slot_offset_F], // input
&txdata[aa][slot_offset], // output
frame_parms->log2_symbol_size, // log2_fft_size
6, // number of symbols
frame_parms->nb_prefix_samples, // number of prefix samples
frame_parms->twiddle_ifft, // IFFT twiddle factors
frame_parms->rev, // bit-reversal permutation
CYCLIC_PREFIX);
else {
normal_prefix_mod(&txdataF[aa][slot_offset_F],
&txdata[aa][slot_offset],
7,
frame_parms);
}
}
else {
if (frame_parms->Ncp == EXTENDED)
PHY_ofdm_mod(&txdataF[aa][slot_offset_F], // input
&txdata[aa][slot_offset], // output
frame_parms->log2_symbol_size, // log2_fft_size
6, // number of symbols
frame_parms->nb_prefix_samples, // number of prefix samples
frame_parms->twiddle_ifft, // IFFT twiddle factors
frame_parms->rev, // bit-reversal permutation
CYCLIC_PREFIX);
else {
normal_prefix_mod(&txdataF[aa][slot_offset_F],
&txdata[aa][slot_offset],
7,
frame_parms);
}
}
}
}
/** @} */