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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file PHY/LTE_TRANSPORT/pilots_mbsfn.c
* \brief Top-level routines for generating DL mbsfn reference signals
* \authors S. Paranche, R. Knopp
* \date 2012
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr
* \note
* \warning
*/
#include "PHY/defs_eNB.h"
#include "PHY/LTE_REFSIG/lte_refsig.h"
int generate_mbsfn_pilot(PHY_VARS_eNB *eNB,
L1_rxtx_proc_t *proc,
int32_t **txdataF,
int16_t amp)
{
LTE_DL_FRAME_PARMS *frame_parms = &eNB->frame_parms;
uint32_t subframe_offset,Nsymb,samples_per_symbol;
int subframe = proc->subframe_tx;
if (subframe<0 || subframe>= 10) {
LOG_E(PHY,"generate_mbsfn_pilots_subframe: subframe not in range (%d)\n",subframe);
return(-1);
}
Nsymb = (frame_parms->Ncp==NORMAL) ? 7 : 6;
subframe_offset = subframe*frame_parms->ofdm_symbol_size*Nsymb<<1;
samples_per_symbol = frame_parms->ofdm_symbol_size;
// printf("tti %d : offset %d (slot %d)\n",tti,tti_offset,slot_offset);
//Generate Pilots
//antenna 4 symbol 2 Slot 0
lte_dl_mbsfn(eNB,
&txdataF[0][subframe_offset+(2*samples_per_symbol)],
amp,
subframe,
0);
//antenna 4 symbol 0 slot 1
lte_dl_mbsfn(eNB,
&txdataF[0][subframe_offset+(6*samples_per_symbol)],
amp,
subframe,
1);
//antenna 4 symbol 4 slot 1
lte_dl_mbsfn(eNB,
&txdataF[0][subframe_offset+(10*samples_per_symbol)],
amp,
subframe,
2);
return(0);
}