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add beamforming function

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This commit is contained in:
Xiwen JIANG
2016-02-29 17:15:26 +01:00
parent c7c9da4296
commit f02e6ca526
1 changed files with 211 additions and 0 deletions
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openair1/PHY/LTE_TRANSPORT/beamforming.c
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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
*******************************************************************************/
/*! \file PHY/LTE_TRANSPORT/beamforming.c
* \brief
* \author R. Knopp, F. Kaltenberger, X. JIANG
* \date 2015
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr,xiwen.jiang@eurecom.fr
* \note
* \warning
*/
#include "PHY/defs.h"
#include "PHY/extern.h"
#include "PHY/CODING/defs.h"
#include "PHY/CODING/extern.h"
#include "PHY/CODING/lte_interleaver_inline.h"
#include "PHY/LTE_TRANSPORT/defs.h"
#include "defs.h"
#include "UTIL/LOG/vcd_signal_dumper.h"
// ue_spec_beamforming: perform beamforming for data in transmission_mode TM7-TM10
int ue_spec_beamforming(int32_t **txdataF,
int32_t **txdataF_BF,
LTE_DL_FRAME_PARMS *frame_parms,
int32_t ***ue_spec_bf_weights,
int slot,
int symbol)
{
uint8_t p,aa;
uint16_t re=0;
int slot_offset_F;
slot_offset_F = slot*(frame_parms->ofdm_symbol_size)*((frame_parms->Ncp==1) ? 6 : 7);
// clear txdata_BF[aa][re] for each call of spec_spec_beamforming
for(aa=0;aa<frame_parms->nb_antennas_tx;aa++)
memset(txdataF_BF[aa],0,4*(frame_parms->ofdm_symbol_size));
for (re=0;re<frame_parms->ofdm_symbol_size;re++) {
if (txdataF[5][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re]!=0) { //that means this RE is actually using TM7
for (aa=0;aa<frame_parms->nb_antennas_tx;aa++) {
((int16_t*)&txdataF_BF[aa][re])[0] = (int16_t)((((int16_t*)&txdataF[5][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[0]
*((int16_t*)&ue_spec_bf_weights[0][aa][re])[0])>>15);
((int16_t*)&txdataF_BF[aa][re])[0] -= (int16_t)((((int16_t*)&txdataF[5][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[1]
*((int16_t*)&ue_spec_bf_weights[0][aa][re])[1])>>15);
((int16_t*)&txdataF_BF[aa][re])[1] = (int16_t)((((int16_t*)&txdataF[5][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[0]
*((int16_t*)&ue_spec_bf_weights[0][aa][re])[1])>>15);
((int16_t*)&txdataF_BF[aa][re])[1] += (int16_t)((((int16_t*)&txdataF[5][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[1]
*((int16_t*)&ue_spec_bf_weights[0][aa][re])[0])>>15);
/* printf("beamforming.c:txdataF[5][%d]=%d+j%d, ue_bf_weights[0][%d][%d]=%d+j%d,txdata_BF[%d][%d]=%d+j%d\n",
slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re,
((int16_t*)&txdataF[5][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[0],
((int16_t*)&txdataF[5][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[1],
aa,re,
((int16_t*)&ue_spec_bf_weights[0][aa][re])[0],((int16_t*)&ue_spec_bf_weights[0][aa][re])[1],
aa,re,
((int16_t*)&txdataF_BF[aa][re])[0],
((int16_t*)&txdataF_BF[aa][re])[1]); */
}
}
if (txdataF[7][re+symbol*frame_parms->ofdm_symbol_size]!=0) { //that means this RE is actually using TM8-10
for (p=0;p<8;p++) {
if (txdataF[p+7][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re]!=0) { //that means this RE is actually allocated
for (aa=0;aa<frame_parms->nb_antennas_tx;aa++) {
((int16_t*)&txdataF_BF[aa][re])[0] = (int16_t)((((int16_t*)&txdataF[p+7][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[0]
*((int16_t*)&ue_spec_bf_weights[p][aa][re])[0])>>15);
((int16_t*)&txdataF_BF[aa][re])[0] -= (int16_t)((((int16_t*)&txdataF[p+7][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[1]
*((int16_t*)&ue_spec_bf_weights[p][aa][re])[1])>>15);
((int16_t*)&txdataF_BF[aa][re])[1] = (int16_t)((((int16_t*)&txdataF[p+7][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[0]
*((int16_t*)&ue_spec_bf_weights[p][aa][re])[1])>>15);
((int16_t*)&txdataF_BF[aa][re])[1] += (int16_t)((((int16_t*)&txdataF[p+7][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[1]
*((int16_t*)&ue_spec_bf_weights[p][aa][re])[0])>>15);
}
}
}
}
}
}
// cell_spec_beamforming: performed for all common data
int cell_spec_beamforming(int32_t **txdataF,
int32_t **txdataF_BF,
LTE_DL_FRAME_PARMS *frame_parms,
int32_t ***cell_spec_bf_weights,
int slot,
int symbol)
{
uint8_t p,aa;
uint16_t re=0;
int slot_offset_F;
slot_offset_F = slot*(frame_parms->ofdm_symbol_size)*((frame_parms->Ncp==1) ? 6 : 7);
// clear txdata_BF[aa][re] for each call of cell_spec_beamforming
for(aa=0;aa<frame_parms->nb_antennas_tx;aa++)
memset(txdataF_BF[aa],0,4*(frame_parms->ofdm_symbol_size));
for (re=0;re<frame_parms->ofdm_symbol_size;re++) {
for (p=0;p<frame_parms->nb_antenna_ports_eNB;p++) {
if (txdataF[p][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re]!=0) { //that means this RE is actually allocated
for (aa=0;aa<frame_parms->nb_antennas_tx;aa++) {
//printf("cell_spec_beamforming():txdata_BF[%d][%d]=%d+j%d\n",aa,re,((int16_t*)&txdataF_BF[aa][re])[0],((int16_t*)&txdataF_BF[aa][re])[1]);
((int16_t*)&txdataF_BF[aa][re])[0] = (int16_t)((((int16_t*)&txdataF[p][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[0]
*((int16_t*)&cell_spec_bf_weights[p][aa][re])[0])>>15);
((int16_t*)&txdataF_BF[aa][re])[0] -= (int16_t)((((int16_t*)&txdataF[p][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[1]
*((int16_t*)&cell_spec_bf_weights[p][aa][re])[1])>>15);
((int16_t*)&txdataF_BF[aa][re])[1] = (int16_t)((((int16_t*)&txdataF[p][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[0]
*((int16_t*)&cell_spec_bf_weights[p][aa][re])[1])>>15);
((int16_t*)&txdataF_BF[aa][re])[1] += (int16_t)((((int16_t*)&txdataF[p][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[1]
*((int16_t*)&cell_spec_bf_weights[p][aa][re])[0])>>15);
// printf("beamforming.c:txdata[%d][%d]=%d+j%d, cell_bf_weights[%d][%d][%d]=%d+j%d,txdata_BF[%d][%d]=%d+j%d\n",
// p,slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re,
// ((int16_t*)&txdataF[p][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[0],
// ((int16_t*)&txdataF[p][slot_offset_F+symbol*frame_parms->ofdm_symbol_size+re])[1],
// p,aa,re,
// ((int16_t*)&cell_spec_bf_weights[p][aa][re])[0],((int16_t*)&cell_spec_bf_weights[p][aa][re])[1],
// aa,re,
// ((int16_t*)&txdataF_BF[aa][re])[0],
// ((int16_t*)&txdataF_BF[aa][re])[1]);
}
}
}
}
}
/*
int ue_spec_beamforming(int32_t **txdataF,
int32_t **txdataF_BF,
LTE_DL_FRAME_PARMS *frame_parms,
LTE_eNB_DLSCH_t *dlsch0,
LTE_eNB_DLSCH_t *dlsch1,
int symbol)
{
uint8_t p,aa;
uint16_t re=0;
uint8_t harq_pid = dlsch0->current_harq_pid;
LTE_DL_eNB_HARQ_t *dlsch0_harq = dlsch0->harq_processes[harq_pid];
LTE_DL_eNB_HARQ_t *dlsch1_harq; //= dlsch1->harq_processes[harq_pid];
MIMO_mode_t mimo_mode = dlsch0_harq->mimo_mode;
int first_layer0 = dlsch0_harq->first_layer;
int Nlayers0 = dlsch0_harq->Nlayers;
// Fill these in later for TM8-10
int Nlayers1;
int first_layer1;
if (dlsch1_harq) {
Nlayers1 = dlsch1_harq->Nlayers;
first_layer1 = dlsch1_harq->first_layer;
}
//temp
if(mimo_mode==TM7){
first_layer0 = 5;
Nlayers0=1;
}
for (re=0;re<N_RB_DL*12;re++) {
//for (p=5,7..14) // this depends on the mimo_mode, but also the used ports for each UE
for (p=first_layer0;p<first_layer0+Nlayers0;p++) {
if (txdataF[p][re+symbol*N_RB_DL*12]!=0) { //that means this RE is actually allocated
for (aa=0;aa<frame_aprms->nb_antennas_tx;aa++) {
txdataF_BF[aa][re] += txdataF[p][re]*dlsch0->uespec_bf_weights[p][aa][re];
}
}
}
if(dlsch1_harq) {
for (p=first_layer1;p<first_layer1+Nlayers1;p++) {
if (txdataF[p][re+symbol*N_RB_DL*12]!=0) { //that means this RE is actually allocated
for (aa=0;aa<frame_aprms->nb_antennas_tx;aa++) {
txdataF_BF[aa][re] += txdataF[p][re]*dlsch1->uespec_bf_weights[p][aa][re];
}
}
}
}
}
} */