/******************************************************************************* 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