150 lines
4.7 KiB
C
150 lines
4.7 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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/**********************************************************************
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*
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* FILENAME : pss_nr.h
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*
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* MODULE : primary synchronisation signal
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*
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* DESCRIPTION : elements related to pss
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*
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************************************************************************/
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#ifndef PSS_NR_H
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#define PSS_NR_H
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#include "PHY/defs_nr_UE.h"
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#include "PHY/types.h"
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#include "PHY/NR_REFSIG/ss_pbch_nr.h"
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#ifdef DEFINE_VARIABLES_PSS_NR_H
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#define EXTERN
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#else
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#define EXTERN extern
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#endif
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/************** CODE GENERATION ***********************************/
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//#define PSS_DECIMATOR /* decimation of sample is done between time correlation */
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//#define CIC_DECIMATOR /* it allows enabling decimation based on CIC filter. By default, decimation is based on a FIF filter */
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#define TEST_SYNCHRO_TIMING_PSS (1) /* enable time profiling */
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//#define DBG_PSS_NR
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/************** DEFINE ********************************************/
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/* PROFILING */
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#define TIME_PSS (0)
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#define TIME_RATE_CHANGE (TIME_PSS+1)
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#define TIME_SSS (TIME_RATE_CHANGE+1)
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#define TIME_LAST (TIME_SSS+1)
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/* PSS configuration */
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#define SYNCHRO_FFT_SIZE_MAX (8192) /* maximum size of fft for synchronisation */
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#define NO_RATE_CHANGE (1)
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#ifdef PSS_DECIMATOR
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#define RATE_CHANGE (SYNCHRO_FFT_SIZE_MAX/SYNCHRO_FFT_SIZE_PSS)
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#define SYNCHRO_FFT_SIZE_PSS (256)
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#define OFDM_SYMBOL_SIZE_PSS (SYNCHRO_FFT_SIZE_PSS)
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#define SYNCHRO_RATE_CHANGE_FACTOR (SYNCHRO_FFT_SIZE_MAX/SYNCHRO_FFT_SIZE_PSS)
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#define CIC_FILTER_STAGE_NUMBER (4)
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#else
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#define RATE_CHANGE (1)
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#define SYNCHRO_RATE_CHANGE_FACTOR (1)
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#endif
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#define SYNC_TMP_SIZE (NB_ANTENNAS_RX*SYNCHRO_FFT_SIZE_MAX*IQ_SIZE) /* to be aligned with existing lte synchro */
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#define SYNCF_TMP_SIZE (SYNCHRO_FFT_SIZE_MAX*IQ_SIZE)
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/************* STRUCTURES *****************************************/
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/************** VARIABLES *****************************************/
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//#define STATIC_SYNC_BUFFER
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#ifdef STATIC_SYNC_BUFFER
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/* buffer defined in file lte_sync_time */
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EXTERN int16_t synchro_tmp[SYNC_TMP_SIZE] __attribute__((aligned(32)));
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EXTERN int16_t synchroF_tmp[SYNCF_TMP_SIZE] __attribute__((aligned(32)));
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#else
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EXTERN int16_t *synchro_tmp;
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EXTERN int16_t *synchroF_tmp;
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#endif
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EXTERN int16_t *primary_synchro_nr[NUMBER_PSS_SEQUENCE]
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#ifdef INIT_VARIABLES_PSS_NR_H
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= { NULL, NULL, NULL}
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#endif
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;
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EXTERN int16_t *primary_synchro_nr2[NUMBER_PSS_SEQUENCE]
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#ifdef INIT_VARIABLES_PSS_NR_H
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= { NULL, NULL, NULL}
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#endif
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;
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EXTERN int16_t *primary_synchro_time_nr[NUMBER_PSS_SEQUENCE]
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#ifdef INIT_VARIABLES_PSS_NR_H
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= { NULL, NULL, NULL}
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#endif
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;
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EXTERN int64_t *pss_corr_ue[NUMBER_PSS_SEQUENCE]
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#ifdef INIT_VARIABLES_PSS_NR_H
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= { NULL, NULL, NULL}
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#endif
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;
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/* profiling structure */
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EXTERN time_stats_t generic_time[TIME_LAST];
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#ifndef DEFINE_HEADER_ONLY
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/************** FUNCTION ******************************************/
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idft_size_idx_t get_idft(int ofdm_symbol_size);
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dft_size_idx_t get_dft(int ofdm_symbol_size);
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void init_context_synchro_nr(NR_DL_FRAME_PARMS *frame_parms_ue);
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void free_context_synchro_nr(void);
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void init_context_pss_nr(NR_DL_FRAME_PARMS *frame_parms_ue);
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void free_context_pss_nr(void);
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int set_pss_nr(int ofdm_symbol_size);
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int pss_synchro_nr(PHY_VARS_NR_UE *PHY_vars_UE, int is, int rate_change);
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int pss_search_time_nr(int **rxdata, ///rx data in time domain
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NR_DL_FRAME_PARMS *frame_parms,
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int fo_flag,
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int is,
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int *eNB_id,
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int *f_off);
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#endif
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#undef EXTERN
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#endif /* PSS_NR_H */
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