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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
*******************************************************************************/
#ifndef __MODULATION_DEFS__H__
#define __MODULATION_DEFS__H__
#include "PHY/defs.h"
/** @addtogroup _PHY_MODULATION_
* @{
*/
/**
\fn void PHY_ofdm_mod(int *input,int *output,int fftsize,unsigned char nb_symbols,unsigned short nb_prefix_samples,Extension_t etype)
This function performs OFDM modulation with cyclic extension or zero-padding.
@param input The sequence input samples in the frequency-domain. This is a concatenation of the input symbols in SIMD redundant format
@param output The time-domain output signal
@param fftsize size of OFDM symbol size (\f$N_d\f$)
@param nb_symbols The number of OFDM symbols in the block
@param nb_prefix_samples The number of prefix/suffix/zero samples
@param etype Type of extension (CYCLIC_PREFIX,CYCLIC_SUFFIX,ZEROS)
*/
void PHY_ofdm_mod(int *input,
int *output,
int fftsize,
unsigned char nb_symbols,
unsigned short nb_prefix_samples,
Extension_t etype
);
#ifdef OPENAIR_LTE
/*!
\brief This function implements the OFDM front end processor on reception (FEP)
\param phy_vars_ue Pointer to PHY variables
\param l symbol within slot (0..6/7)
\param Ns Slot number (0..19)
\param sample_offset offset within rxdata (points to beginning of subframe)
\param no_prefix if 1 prefix is removed by HW
\param reset_freq_est if non-zero it resets the frequency offset estimation loop
*/
int slot_fep(PHY_VARS_UE *phy_vars_ue,
unsigned char l,
unsigned char Ns,
int sample_offset,
int no_prefix,
int reset_freq_est);
int slot_fep_mbsfn(PHY_VARS_UE *phy_vars_ue,
unsigned char l,
int subframe,
int sample_offset,
int no_prefix);
int slot_fep_ul(LTE_DL_FRAME_PARMS *frame_parms,
LTE_eNB_COMMON *eNb_common_vars,
unsigned char l,
unsigned char Ns,
unsigned char eNb_id,
int no_prefix);
void normal_prefix_mod(int32_t *txdataF,int32_t *txdata,uint8_t nsymb,LTE_DL_FRAME_PARMS *frame_parms);
void do_OFDM_mod(mod_sym_t **txdataF, int32_t **txdata, uint32_t frame,uint16_t next_slot, LTE_DL_FRAME_PARMS *frame_parms);
void remove_7_5_kHz(PHY_VARS_eNB *phy_vars_eNB,uint8_t subframe);
void apply_7_5_kHz(PHY_VARS_UE *phy_vars_ue,int32_t*txdata,uint8_t subframe);
void init_prach625(LTE_DL_FRAME_PARMS *frame_parms);
void remove_625_Hz(PHY_VARS_eNB *phy_vars_eNB,int16_t *prach);
void apply_625_Hz(PHY_VARS_UE *phy_vars_ue,int16_t *prach);
#endif
/** @}*/
#endif