108 lines
3.7 KiB
C
108 lines
3.7 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 1.0 (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 : sss_nr.h
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*
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* MODULE : Secondary synchronisation signal
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*
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* DESCRIPTION : variables related to sss
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*
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************************************************************************/
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#ifndef SSS_NR_H
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#define SSS_NR_H
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#include "limits.h"
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#include "PHY/types.h"
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#include "pss_nr.h"
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/************** DEFINE ********************************************/
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#define SAMPLES_IQ (sizeof(int16_t)*2)
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#define NUMBER_SSS_SEQUENCE (336)
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#define INVALID_SSS_SEQUENCE (NUMBER_SSS_SEQUENCE)
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#define LENGTH_SSS_NR (127)
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#define SCALING_METRIC_SSS_NR (15)//(19)
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#define N_ID_2_NUMBER (NUMBER_PSS_SEQUENCE)
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#define N_ID_2_NUMBER_SL (NUMBER_PSS_SEQUENCE_SL)
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#define N_ID_1_NUMBER (NUMBER_SSS_SEQUENCE)
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#define GET_NID2(Nid_cell) (Nid_cell%3)
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#define GET_NID1(Nid_cell) (Nid_cell/3)
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#define GET_NID2_SL(Nid_SL) (Nid_SL/NUMBER_SSS_SEQUENCE)
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#define GET_NID1_SL(Nid_SL) (Nid_SL%NUMBER_SSS_SEQUENCE)
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#define PSS_SC_START_NR (52) /* see from TS 38.211 table 7.4.3.1-1: Resources within an SS/PBCH block for PSS... */
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#define SSS_START_IDX (3) /* [0:PSBCH 1:PSS0 2:PSS1 3:SSS0 4:SSS1] */
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#define NUM_SSS_SYMBOLS (2)
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#define SSS_METRIC_FLOOR_NR (30000)
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/************** VARIABLES *****************************************/
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#define PHASE_HYPOTHESIS_NUMBER (16)
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#define INDEX_NO_PHASE_DIFFERENCE (3) /* this is for no phase shift case */
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/************** FUNCTION ******************************************/
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static const c16_t phase_nr[PHASE_HYPOTHESIS_NUMBER] = {
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// {pi/3 ---- pi/3, -pi/3 ---- pi/3}
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{16384, -28377},
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{20173, -25821},
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{23571, -22762},
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{26509, -19260},
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{28932, -15383},
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{30791, -11207},
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{32051, -6813},
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{32687, -2286},
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{32687, 2286},
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{32051, 6813},
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{30791, 11207},
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{28932, 15383},
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{26509, 19260},
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{23571, 22762},
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{20173, 25821},
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{16384, 28377}};
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void init_context_sss_nr(int amp);
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void free_context_sss_nr(void);
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void insert_sss_nr(int16_t *sss_time,
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NR_DL_FRAME_PARMS *frame_parms);
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bool rx_sss_nr(const NR_DL_FRAME_PARMS *frame_parms,
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int nid2,
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int target_Nid_cell,
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int freq_offset_pss,
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int ssb_start_subcarrier,
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int *Nid_cell,
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int32_t *tot_metric,
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uint8_t *phase_max,
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int *freq_offset_sss,
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c16_t rxdataF[][frame_parms->samples_per_slot_wCP]);
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#endif /* SSS_NR_H */
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