Melissa Elkadi
4dd579e042
This commit includes changes to the function footprints for vaiours NR UE and gNB functions. It does not updated the LTE code. For functions shared by both LTE and 5G, we maintained the original LTE footprint and argument structure. Several of the simulators that use these functions have been updated as well. The specific usage of these functions which index into the int32_t buffers and treat the first int16_t and the real and the second as the complex should be modified in the near future.
169 lines
6.2 KiB
C
169 lines
6.2 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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/*! \file PHY/MODULATION/beamforming.c
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* \brief
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* \author X. JIANG, F. Kaltenberger, R. KNOPP
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* \date 2016
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* \version 0.1
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* \company Eurecom
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* \email: xiwen.jiang@eurecom.fr,florian.kaltenberger@eurecom.fr,raymond.knopp@eurecom.fr
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* \note
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* \warning
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*/
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/*! \function beam_precoding_one_eNB
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* \brief Create and Implementation of beamforming in one eNB
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* \author TY Hsu, SY Yeh(fdragon), TH Wang(Judy)
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* \date 2018
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* \version 0.1
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* \company ISIP@NCTU and Eurecom
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* \email: tyhsu@cs.nctu.edu.tw,fdragon.cs96g@g2.nctu.edu.tw,Tsu-Han.Wang@eurecom.fr
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* \note
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* \warning
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*/
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#include "PHY/defs_common.h"
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#include "PHY/defs_eNB.h"
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#include "PHY/CODING/coding_defs.h"
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#include "PHY/CODING/coding_extern.h"
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#include "PHY/CODING/lte_interleaver_inline.h"
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#include "PHY/LTE_TRANSPORT/transport_eNB.h"
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#include "modulation_eNB.h"
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#include "nr_modulation.h"
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#include "common/utils/LOG/vcd_signal_dumper.h"
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int beam_precoding(int32_t **txdataF,
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int32_t **txdataF_BF,
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int subframe,
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LTE_DL_FRAME_PARMS *frame_parms,
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int32_t **beam_weights[NUMBER_OF_eNB_MAX+1][15],
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int symbol,
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int aa,
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int p,
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int l1_id)
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{
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int rb_offset_neg0 = frame_parms->ofdm_symbol_size - (6*frame_parms->N_RB_DL);
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int rb_offset_neg = (subframe*frame_parms->ofdm_symbol_size*frame_parms->symbols_per_tti) + rb_offset_neg0;
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int rb_offset_pos = (subframe*frame_parms->ofdm_symbol_size*frame_parms->symbols_per_tti);
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multadd_cpx_vector((int16_t*)&txdataF[p][rb_offset_neg+(symbol*frame_parms->ofdm_symbol_size)],
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(int16_t*)&beam_weights[l1_id][p][aa][rb_offset_neg0],
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(int16_t*)&txdataF_BF[aa][rb_offset_neg0+(symbol*frame_parms->ofdm_symbol_size)],
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0,
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6*frame_parms->N_RB_DL,
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15);
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multadd_cpx_vector((int16_t*)&txdataF[p][rb_offset_pos+(symbol*frame_parms->ofdm_symbol_size)],
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(int16_t*)&beam_weights[l1_id][p][aa][0],
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(int16_t*)&txdataF_BF[aa][(symbol*frame_parms->ofdm_symbol_size)],
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0,
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7*frame_parms->N_RB_DL, // to allow for extra RE at the end, 12 useless multipy-adds (first one at DC and 11 at end)
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15);
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return 0;
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}
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int beam_precoding_one_eNB(int32_t **txdataF,
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int32_t **txdataF_BF,
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int32_t **beam_weights[NUMBER_OF_eNB_MAX+1][15],
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int subframe,
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int nb_antenna_ports,
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int nb_tx, // total physical antenna
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LTE_DL_FRAME_PARMS *frame_parms
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)
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{
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int p, symbol, aa; // loop index
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int re_offset;
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int ofdm_symbol_size = frame_parms->ofdm_symbol_size;
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int symbols_per_tti = frame_parms->symbols_per_tti;
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int nb_antenna_ports_eNB = frame_parms->nb_antenna_ports_eNB; // logic antenna ports
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re_offset = ofdm_symbol_size*symbols_per_tti*subframe;
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// txdataF_BF[aa][re] = sum(beam_weghts[p][aa][re]*txdataF[p][re]), p=0~nb_antenna_ports-1
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// real part and image part need to compute separately
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for (aa=0; aa<nb_tx; aa++) {
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memset(txdataF_BF[aa],0,sizeof(int32_t)*(ofdm_symbol_size*symbols_per_tti));
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for(p=0;p<nb_antenna_ports;p++){
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if (p<nb_antenna_ports_eNB || p==5){
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for (symbol=0; symbol<symbols_per_tti; symbol++){
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multadd_cpx_vector((int16_t*)&txdataF[p][symbol*ofdm_symbol_size+re_offset],
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(int16_t*)beam_weights[0][p][aa],
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(int16_t*)&txdataF_BF[aa][symbol*ofdm_symbol_size],
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0,
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ofdm_symbol_size,
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15);
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/*
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for (re=0; re<ofdm_symbol_size; re++){
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// direct
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((int16_t*)&txdataF_BF[aa][re])[0] += (int16_t)((((int16_t*)&txdataF[p][re+symbol*ofdm_symbol_size+re_offset])[0]*((int16_t*)&beam_weights[p][aa][re])[0])>>15);
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((int16_t*)&txdataF_BF[aa][re])[0] -= (int16_t)((((int16_t*)&txdataF[p][re+symbol*ofdm_symbol_size+re_offset])[1]*((int16_t*)&beam_weights[p][aa][re])[1])>>15);
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((int16_t*)&txdataF_BF[aa][re])[1] += (int16_t)((((int16_t*)&txdataF[p][re+symbol*ofdm_symbol_size+re_offset])[0]*((int16_t*)&beam_weights[p][aa][re])[1])>>15);
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((int16_t*)&txdataF_BF[aa][re])[1] += (int16_t)((((int16_t*)&txdataF[p][re+symbol*ofdm_symbol_size+re_offset])[1]*((int16_t*)&beam_weights[p][aa][re])[0])>>15);
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}
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*/
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}
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}
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}
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}
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return 0;
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}
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int nr_beam_precoding(c16_t **txdataF,
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c16_t **txdataF_BF,
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NR_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 nb_antenna_ports,
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int offset)
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{
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uint8_t p;
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// clear txdata_BF[aa][re] for each call of ue_spec_beamforming
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memset(&txdataF_BF[aa][symbol*frame_parms->ofdm_symbol_size], 0, sizeof(c16_t) *(frame_parms->ofdm_symbol_size));
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for (p=0; p<nb_antenna_ports; p++) {
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//if ((frame_parms->L_ssb >> (63-p)) & 0x01) {
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multadd_cpx_vector((int16_t*)&txdataF[p][(symbol*frame_parms->ofdm_symbol_size)+offset],
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(int16_t*)beam_weights[p][aa],
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(int16_t*)&txdataF_BF[aa][symbol*frame_parms->ofdm_symbol_size],
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0,
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frame_parms->ofdm_symbol_size,
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15);
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//}
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}
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return 0;
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}
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