Cedric Roux
b4a48e199e
Conflicts: openair1/PHY/CODING/rate_matching.c openair1/PHY/LTE_REFSIG/primary_synch.h openair2/LAYER2/layer2_top.c openair2/RRC/LITE/rrc_config.c
135 lines
5.0 KiB
C
135 lines
5.0 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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#ifndef __MODULATION_DEFS__H__
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#define __MODULATION_DEFS__H__
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#include "PHY/defs.h"
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/** @addtogroup _PHY_MODULATION_
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* @{
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*/
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/**
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\fn void PHY_ofdm_mod(int *input,int *output,int fftsize,unsigned char nb_symbols,unsigned short nb_prefix_samples,Extension_t etype)
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This function performs OFDM modulation with cyclic extension or zero-padding.
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@param input The sequence input samples in the frequency-domain. This is a concatenation of the input symbols in SIMD redundant format
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@param output The time-domain output signal
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@param fftsize size of OFDM symbol size (\f$N_d\f$)
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@param nb_symbols The number of OFDM symbols in the block
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@param nb_prefix_samples The number of prefix/suffix/zero samples
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@param etype Type of extension (CYCLIC_PREFIX,CYCLIC_SUFFIX,ZEROS)
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*/
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void PHY_ofdm_mod(int *input,
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int *output,
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int fftsize,
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unsigned char nb_symbols,
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unsigned short nb_prefix_samples,
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Extension_t etype
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);
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#ifdef OPENAIR_LTE
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/*!
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\brief This function implements the OFDM front end processor on reception (FEP)
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\param phy_vars_ue Pointer to PHY variables
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\param l symbol within slot (0..6/7)
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\param Ns Slot number (0..19)
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\param sample_offset offset within rxdata (points to beginning of subframe)
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\param no_prefix if 1 prefix is removed by HW
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\param reset_freq_est if non-zero it resets the frequency offset estimation loop
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*/
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int slot_fep(PHY_VARS_UE *phy_vars_ue,
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unsigned char l,
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unsigned char Ns,
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int sample_offset,
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int no_prefix,
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int reset_freq_est);
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int slot_fep_mbsfn(PHY_VARS_UE *phy_vars_ue,
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unsigned char l,
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int subframe,
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int sample_offset,
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int no_prefix);
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int slot_fep_ul(RU_t *ru,
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unsigned char l,
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unsigned char Ns,
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int no_prefix);
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int front_end_fft(PHY_VARS_UE *ue,
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unsigned char l,
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unsigned char Ns,
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int sample_offset,
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int no_prefix);
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int front_end_chanEst(PHY_VARS_UE *ue,
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unsigned char l,
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unsigned char Ns,
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int reset_freq_est);
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void normal_prefix_mod(int32_t *txdataF,int32_t *txdata,uint8_t nsymb,LTE_DL_FRAME_PARMS *frame_parms);
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void do_OFDM_mod(int32_t **txdataF, int32_t **txdata, uint32_t frame,uint16_t next_slot, LTE_DL_FRAME_PARMS *frame_parms);
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void do_OFDM_mod_symbol(LTE_eNB_COMMON *eNB_common_vars, RU_COMMON *common, uint16_t next_slot, LTE_DL_FRAME_PARMS *frame_parms,int do_precoding);
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void remove_7_5_kHz(RU_t *ru,uint8_t subframe);
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void apply_7_5_kHz(PHY_VARS_UE *phy_vars_ue,int32_t*txdata,uint8_t subframe);
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void init_prach625(LTE_DL_FRAME_PARMS *frame_parms);
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void remove_625_Hz(PHY_VARS_eNB *phy_vars_eNB,int16_t *prach);
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void apply_625_Hz(PHY_VARS_UE *phy_vars_ue,int16_t *prach);
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/** \brief This function performs beamforming precoding for common
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* data
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@param txdataF Table of pointers for frequency-domain TX signals
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@param txdataF_BF Table of pointers for frequency-domain TX signals
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@param frame_parms Frame descriptor structure
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after beamforming
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@param beam_weights Beamforming weights applied on each
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antenna element and each carrier
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@param slot Slot number
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@param symbol Symbol index on which to act
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@param aa physical antenna index*/
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int beam_precoding(int32_t **txdataF,
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int32_t **txdataF_BF,
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LTE_DL_FRAME_PARMS *frame_parms,
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int32_t ***beam_weights,
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int slot,
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int symbol,
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int aa);
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int f_read(char *calibF_fname, int nb_ant, int nb_freq, int32_t **tdd_calib_coeffs);
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int estimate_DLCSI_from_ULCSI(int32_t **calib_dl_ch_estimates, int32_t **ul_ch_estimates, int32_t **tdd_calib_coeffs, int nb_ant, int nb_freq);
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int compute_BF_weights(int32_t **beam_weights, int32_t **calib_dl_ch_estimates, PRECODE_TYPE_t precode_type, int nb_ant, int nb_freq);
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#endif
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/** @}*/
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#endif
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