Raymond Knopp
b458c09841
Conflicts: cmake_targets/CMakeLists.txt openair1/PHY/LTE_ESTIMATION/lte_adjust_sync.c openair1/PHY/LTE_UE_TRANSPORT/dci_ue.c
73 lines
2.4 KiB
C
73 lines
2.4 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/pcfich.c
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* \brief Top-level routines for generating and decoding the PCFICH/CFI physical/transport channel 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/impl_defs_top.h"
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#include "PHY/defs_eNB.h"
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void generate_pcfich_reg_mapping(LTE_DL_FRAME_PARMS *frame_parms)
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{
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uint16_t kbar = 6 * (frame_parms->Nid_cell %(2*frame_parms->N_RB_DL));
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uint16_t first_reg;
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uint16_t *pcfich_reg = frame_parms->pcfich_reg;
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pcfich_reg[0] = kbar/6;
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first_reg = pcfich_reg[0];
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frame_parms->pcfich_first_reg_idx=0;
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pcfich_reg[1] = ((kbar + (frame_parms->N_RB_DL>>1)*6)%(frame_parms->N_RB_DL*12))/6;
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if (pcfich_reg[1] < pcfich_reg[0]) {
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frame_parms->pcfich_first_reg_idx = 1;
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first_reg = pcfich_reg[1];
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}
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pcfich_reg[2] = ((kbar + (frame_parms->N_RB_DL)*6)%(frame_parms->N_RB_DL*12))/6;
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if (pcfich_reg[2] < first_reg) {
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frame_parms->pcfich_first_reg_idx = 2;
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first_reg = pcfich_reg[2];
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}
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pcfich_reg[3] = ((kbar + ((3*frame_parms->N_RB_DL)>>1)*6)%(frame_parms->N_RB_DL*12))/6;
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if (pcfich_reg[3] < first_reg) {
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frame_parms->pcfich_first_reg_idx = 3;
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first_reg = pcfich_reg[3];
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}
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//#ifdef DEBUG_PCFICH
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printf("pcfich_reg : %d,%d,%d,%d\n",pcfich_reg[0],pcfich_reg[1],pcfich_reg[2],pcfich_reg[3]);
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//#endif
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}
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