Sakthivel Velumani
ae690217dd
1.Create new funtion nr_symbol_fep() to do OFDM demod of one symbol on all antennas. This is called by nr_slot_fep() for now. In the upcoming MR, this function will be called directly after reading each OFDM symbol from the radio. 2.Removed redundant memory alignment. DFT function performs memory alignment if the input memory is not aligned.
156 lines
6.3 KiB
C
156 lines
6.3 KiB
C
/*
|
|
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership.
|
|
* The OpenAirInterface Software Alliance licenses this file to You under
|
|
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
|
|
* except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.openairinterface.org/?page_id=698
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*-------------------------------------------------------------------------------
|
|
* For more information about the OpenAirInterface (OAI) Software Alliance:
|
|
* contact@openairinterface.org
|
|
*/
|
|
|
|
#ifndef __NR_MODULATION_H__
|
|
#define __NR_MODULATION_H__
|
|
|
|
#include <stdint.h>
|
|
#include "PHY/defs_nr_common.h"
|
|
#include "PHY/defs_gNB.h"
|
|
|
|
#define DMRS_MOD_ORDER 2
|
|
/*Precoding matices: W[pmi][antenna_port][layer]*/
|
|
extern const char nr_W_1l_2p[6][2][1];
|
|
extern const char nr_W_2l_2p[3][2][2];
|
|
extern const char nr_W_1l_4p[28][4][1];
|
|
extern const char nr_W_2l_4p[22][4][2];
|
|
extern const char nr_W_3l_4p[7][4][3];
|
|
extern const char nr_W_4l_4p[5][4][4];
|
|
/*! \brief Perform NR modulation. TS 38.211 V15.4.0 subclause 5.1
|
|
@param[in] in, Pointer to input bits
|
|
@param[in] length, size of input bits
|
|
@param[in] modulation_type, modulation order
|
|
@param[out] out, complex valued modulated symbols
|
|
*/
|
|
|
|
void nr_modulation(const uint32_t *in,
|
|
uint32_t length,
|
|
uint16_t mod_order,
|
|
int16_t *out);
|
|
|
|
/*! \brief Perform NR layer mapping. TS 38.211 V15.4.0 subclause 7.3.1.3
|
|
@param[in] mod_symbs, double Pointer to modulated symbols for each codeword
|
|
@param[in] n_layers, number of layers
|
|
@param[in] n_symbs, number of modulated symbols
|
|
@param[out] tx_layers, modulated symbols for each layer
|
|
*/
|
|
|
|
void nr_layer_mapping(int nbCodes,
|
|
int encoded_len,
|
|
c16_t mod_symbs[nbCodes][encoded_len],
|
|
uint8_t n_layers,
|
|
int layerSz,
|
|
uint32_t n_symbs,
|
|
c16_t tx_layers[][layerSz]);
|
|
|
|
/*! \brief Perform NR layer mapping. TS 38.211 V15.4.0 subclause 7.3.1.3
|
|
@param[in] ulsch_ue, double Pointer to NR_UE_ULSCH_t struct
|
|
@param[in] n_layers, number of layers
|
|
@param[in] n_symbs, number of modulated symbols
|
|
@param[out] tx_layers, modulated symbols for each layer
|
|
*/
|
|
void nr_ue_layer_mapping(const c16_t *mod_symbs, const int n_layers, const int n_symbs, c16_t tx_layers[][n_symbs]);
|
|
/*!
|
|
\brief This function implements the OFDM front end processor on reception (FEP)
|
|
\param frame_parms Pointer to frame parameters
|
|
\param rxdata Pointer to input data in time domain
|
|
\param rxdataF Pointer to output data in frequency domain
|
|
\param symbol symbol within slot (0..12/14)
|
|
\param Ns Slot number (0..19)
|
|
\param sample_offset offset within rxdata (points to beginning of subframe)
|
|
*/
|
|
|
|
int nr_slot_fep_ul(NR_DL_FRAME_PARMS *frame_parms,
|
|
int32_t *rxdata,
|
|
int32_t *rxdataF,
|
|
unsigned char symbol,
|
|
unsigned char Ns,
|
|
int sample_offset);
|
|
|
|
/*!
|
|
\brief This function implements the dft transform precoding in PUSCH
|
|
\param z Pointer to output in frequnecy domain
|
|
\param d Pointer to input in time domain
|
|
\param Msc_PUSCH number of allocated data subcarriers
|
|
*/
|
|
void nr_dft(c16_t *z, c16_t *d, uint32_t Msc_PUSCH);
|
|
|
|
void nr_beam_precoding(c16_t **txdataF,
|
|
c16_t **txdataF_BF,
|
|
NR_DL_FRAME_PARMS *frame_parms,
|
|
int32_t ***beam_weights,
|
|
int slot,
|
|
int symbol,
|
|
int aa,
|
|
int nb_antenna_ports,
|
|
int offset);
|
|
|
|
void apply_nr_rotation_TX(const NR_DL_FRAME_PARMS *fp,
|
|
c16_t *txdataF,
|
|
const c16_t *symbol_rotation,
|
|
int slot,
|
|
int nb_rb,
|
|
int first_symbol,
|
|
int nsymb);
|
|
|
|
void perform_symbol_rotation(NR_DL_FRAME_PARMS *fp, double f0, c16_t *symbol_rotation);
|
|
|
|
void init_symbol_rotation(NR_DL_FRAME_PARMS *fp);
|
|
|
|
void init_timeshift_rotation(NR_DL_FRAME_PARMS *fp);
|
|
|
|
void apply_nr_rotation_symbol_RX(const NR_DL_FRAME_PARMS *frame_parms,
|
|
c16_t *rxdataF,
|
|
const c16_t *rot,
|
|
int nb_rb,
|
|
int slot,
|
|
int symbol);
|
|
|
|
/*! \brief Perform NR precoding. TS 38.211 V15.4.0 subclause 6.3.1.5
|
|
@param[in] datatx_F_precoding, Pointer to n_layers*re data array
|
|
@param[in] prec_matrix, Pointer to precoding matrix
|
|
@param[in] n_layers, number of DLSCH layers
|
|
*/
|
|
c16_t nr_layer_precoder(int sz, c16_t datatx_F_precoding[][sz], const char *prec_matrix, uint8_t n_layers, int32_t re_offset);
|
|
|
|
c16_t nr_layer_precoder_cm(int n_layers,
|
|
int symSz,
|
|
c16_t datatx_F_precoding[n_layers][symSz],
|
|
int ap,
|
|
nfapi_nr_pm_pdu_t *pmi_pdu,
|
|
int offset);
|
|
|
|
/*! \brief Precoding with SIMDe, txdataF_precoded[] = prec_matrix[] * txdataF_res_mapped[]
|
|
@param[in] txdataF_res_mapped Tx data after resource mapping, before precoding.
|
|
@param[in] prec_matrix Weights of precoding matrix.
|
|
@param[in] re_cnt Number of RE (sub carrier) to write to txdataF_precoded, should be multiple of 4.
|
|
@param[out] txdataF_precoded Precoded antenna data
|
|
*/
|
|
void nr_layer_precoder_simd(const int n_layers,
|
|
const int symSz,
|
|
const c16_t txdataF_res_mapped[n_layers][symSz],
|
|
const int ant,
|
|
const nfapi_nr_pm_pdu_t *pmi_pdu,
|
|
const int sc_offset,
|
|
const int re_cnt,
|
|
c16_t *txdataF_precoded);
|
|
#endif
|