99 lines
2.9 KiB
C
99 lines
2.9 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/prach_common.c
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* \brief Common routines for UE/eNB PRACH physical 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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#ifndef __PHY_LTE_TRANSPORT_PRACH_EXTERN__H__
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#define __PHY_LTE_TRANSPORT_PRACH_EXTERN__H__
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#include "PHY/sse_intrin.h"
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#include "PHY/defs_eNB.h"
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#include "PHY/phy_extern.h"
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//#define PRACH_DEBUG 1
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//#define PRACH_WRITE_OUTPUT_DEBUG 1
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extern uint16_t NCS_unrestricted[16];
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extern uint16_t NCS_restricted[15];
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extern uint16_t NCS_4[7];
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extern int16_t ru[2*839]; // quantized roots of unity
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extern uint32_t ZC_inv[839]; // multiplicative inverse for roots u
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extern uint16_t du[838];
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// This is table 5.7.1-4 from 36.211
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extern PRACH_TDD_PREAMBLE_MAP tdd_preamble_map[64][7];
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extern uint16_t prach_root_sequence_map0_3[838];
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extern uint16_t prach_root_sequence_map4[138];
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void dump_prach_config(LTE_DL_FRAME_PARMS *frame_parms,uint8_t subframe);
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// This function computes the du
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void fill_du(uint8_t prach_fmt);
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uint8_t get_num_prach_tdd(module_id_t Mod_id);
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uint8_t get_fid_prach_tdd(module_id_t Mod_id,uint8_t tdd_map_index);
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uint8_t get_prach_fmt(uint8_t prach_ConfigIndex,lte_frame_type_t frame_type);
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uint8_t get_prach_prb_offset(LTE_DL_FRAME_PARMS *frame_parms,
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uint8_t prach_ConfigIndex,
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uint8_t n_ra_prboffset,
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uint8_t tdd_mapindex, uint16_t Nf);
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int is_prach_subframe0(LTE_DL_FRAME_PARMS *frame_parms,uint8_t prach_ConfigIndex,uint32_t frame, uint8_t subframe);
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int is_prach_subframe(LTE_DL_FRAME_PARMS *frame_parms,uint32_t frame, uint8_t subframe);
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void compute_prach_seq(uint16_t rootSequenceIndex,
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uint8_t prach_ConfigIndex,
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uint8_t zeroCorrelationZoneConfig,
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uint8_t highSpeedFlag,
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lte_frame_type_t frame_type,
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uint32_t X_u[64][839]);
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#endif
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