Cedric Roux
aea6b4b5a6
For whatever reason most of the files had their permission changed from 644 to 755, which is not wanted.
85 lines
2.6 KiB
C
85 lines
2.6 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 1.1 (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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/*! \file PHY/LTE_TRANSPORT/sss.c
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* \brief Top-level routines for generating and decoding the secondary synchronization signal (SSS) V8.6 2009-03
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* \author R. Knopp
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* \date 2011
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* \version 0.1
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* \company Eurecom
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* \email: knopp@eurecom.fr
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* \note
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* \warning
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*/
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#include "PHY/defs_eNB.h"
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#include "transport_eNB.h"
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#include "PHY/phy_extern.h"
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//#define DEBUG_SSS
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int generate_sss(int32_t **txdataF,
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int16_t amp,
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LTE_DL_FRAME_PARMS *frame_parms,
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uint16_t symbol,
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uint16_t slot_offset)
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{
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uint8_t i,aa,Nsymb;
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int16_t *d,k;
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uint8_t Nid2;
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uint16_t Nid1;
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int16_t a;
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Nid2 = frame_parms->Nid_cell % 3;
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Nid1 = frame_parms->Nid_cell/3;
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if (slot_offset < 3)
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d = &d0_sss[62*(Nid2 + (Nid1*3))];
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else
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d = &d5_sss[62*(Nid2 + (Nid1*3))];
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Nsymb = (frame_parms->Ncp==NORMAL)?14:12;
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k = frame_parms->ofdm_symbol_size-3*12+5;
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a = (frame_parms->nb_antenna_ports_eNB == 1) ? amp : (amp*ONE_OVER_SQRT2_Q15)>>15;
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for (i=0; i<62; i++) {
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for (aa=0; aa<frame_parms->nb_antenna_ports_eNB; aa++) {
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((int16_t*)txdataF[aa])[2*(slot_offset*Nsymb/2*frame_parms->ofdm_symbol_size +
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symbol*frame_parms->ofdm_symbol_size + k)] =
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(a * d[i]);
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((int16_t*)txdataF[aa])[2*(slot_offset*Nsymb/2*frame_parms->ofdm_symbol_size +
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symbol*frame_parms->ofdm_symbol_size + k)+1] = 0;
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}
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k+=1;
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if (k >= frame_parms->ofdm_symbol_size) {
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k++;
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k-=frame_parms->ofdm_symbol_size;
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}
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}
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return(0);
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}
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