Cedric Roux
56c66c09aa
Pre-ci test passed git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4000 818b1a75-f10b-46b9-bf7c-635c3b92a50f
77 lines
2.4 KiB
C
77 lines
2.4 KiB
C
#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,unsigned char log2fftsize,unsigned char nb_symbols,unsigned short nb_prefix_samples,short *twiddle_ifft,unsigned short *rev,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 log2fftsize Base-2 logarithm of the 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 twiddle_ifft Pointer to the ifft twiddle factors
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@param rev Pointer to the bit-reversal permutation
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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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unsigned char log2fftsize,
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unsigned char nb_symbols,
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unsigned short nb_prefix_samples,
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short *twiddle_ifft,
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unsigned short *rev,
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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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*/
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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 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(LTE_DL_FRAME_PARMS *frame_parms,
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LTE_eNB_COMMON *eNb_common_vars,
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unsigned char l,
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unsigned char Ns,
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unsigned char eNb_id,
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int no_prefix);
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void normal_prefix_mod(s32 *txdataF,s32 *txdata,u8 nsymb,LTE_DL_FRAME_PARMS *frame_parms);
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void remove_7_5_kHz(PHY_VARS_eNB *phy_vars_eNB,u8 subframe);
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void apply_7_5_kHz(PHY_VARS_UE *phy_vars_ue,s32*txdata,u8 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,s16 *prach);
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void apply_625_Hz(PHY_VARS_UE *phy_vars_ue,s16 *prach);
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#endif
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/** @}*/
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#endif
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