Robert Schmidt
8107939f08
- all RAN code, CI code, configuration files, dockerfiles, in CSSL v1.0
- all deployment code (openshift, charts, ancillary files like shell
scripts), in MIT
- documentation in CC-BY-4.0
- exceptions might apply and are listed in NOTICE
- there is a new LICENSES folder with all licenses
- CONTRIBUTIONS.md has been updated accordingly
For automated changes based on OAI PL v1.1:
perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.{c,h,cpp}
perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.ts
perl -i~ -0pe 's/<!--.*Licensed to the OpenAirInterface.*openairinterface.org\n.*-->/<!-- SPDX-License-Identifier: LicenseRef-CSSL-1.0 -->/s' **/*.xml
The rest (cmake, files with missing license, cmake) manually.
97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
/*
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* SPDX-License-Identifier: LicenseRef-CSSL-1.0
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*/
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#include "PHY/defs_eNB.h"
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//#include "PHY/phy_extern.h"
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//#include "modulation_eNB.h"
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//#define DEBUG_FEP
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int slot_fep_ul(RU_t *ru,
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unsigned char l,
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unsigned char Ns,
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int no_prefix)
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{
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#ifdef DEBUG_FEP
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char fname[40], vname[40];
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#endif
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unsigned char aa;
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RU_COMMON *common=&ru->common;
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LTE_DL_FRAME_PARMS *fp = ru->frame_parms;
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unsigned char symbol = l+((7-fp->Ncp)*(Ns&1)); ///symbol within sub-frame
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unsigned int nb_prefix_samples = (no_prefix ? 0 : fp->nb_prefix_samples);
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unsigned int nb_prefix_samples0 = (no_prefix ? 0 : fp->nb_prefix_samples0);
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// unsigned int subframe_offset;
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unsigned int slot_offset;
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int tmp_dft_in[2048] __attribute__ ((aligned (32))); // This is for misalignment issues for 6 and 15 PRBs
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unsigned int frame_length_samples = fp->samples_per_tti * 10;
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unsigned int rx_offset;
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int s = fp->ofdm_symbol_size;
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if (s != 128 && s != 256 && s != 512 && s != 1024 && s != 1536 && s != 2048)
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s = 512;
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const dft_size_idx_t dftsize = get_dft(s);
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if (no_prefix) {
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// subframe_offset = frame_parms->ofdm_symbol_size * frame_parms->symbols_per_tti * (Ns>>1);
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slot_offset = fp->ofdm_symbol_size * (fp->symbols_per_tti>>1) * (Ns&1);
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} else {
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// subframe_offset = frame_parms->samples_per_tti * (Ns>>1);
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slot_offset = (fp->samples_per_tti>>1) * (Ns&1);
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}
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if (l<0 || l>=7-fp->Ncp) {
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LOG_E(PHY,"slot_fep: l must be between 0 and %d\n",7-fp->Ncp);
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return(-1);
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}
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if (Ns<0 || Ns>=20) {
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LOG_E(PHY,"slot_fep: Ns must be between 0 and 19\n");
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return(-1);
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}
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#ifdef DEBUG_FEP
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LOG_D(PHY,"slot_fep: Ns %d offset %d, symbol %d, nb_prefix_samples %d\n",Ns,slot_offset,symbol, nb_prefix_samples);
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#endif
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for (aa=0; aa<ru->nb_rx; aa++) {
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rx_offset = slot_offset +nb_prefix_samples0;
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if (l==0) {
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#ifdef DEBUG_FEP
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LOG_D(PHY,"slot_fep: symbol 0 %d dB\n",
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dB_fixed(signal_energy(&common->rxdata_7_5kHz[aa][rx_offset],fp->ofdm_symbol_size)));
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#endif
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dft( dftsize,(int16_t *)&common->rxdata_7_5kHz[aa][rx_offset],
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(int16_t *)&common->rxdataF[aa][fp->ofdm_symbol_size*symbol],
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1
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);
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} else {
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rx_offset += (fp->ofdm_symbol_size+nb_prefix_samples)*l;
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// check for 256-bit alignment of input buffer and do DFT directly, else do via intermediate buffer
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if( (rx_offset & 15) != 0){
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memcpy((void *)&tmp_dft_in,
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(void *)&common->rxdata_7_5kHz[aa][(rx_offset % frame_length_samples)],
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fp->ofdm_symbol_size*sizeof(int));
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dft( dftsize,(short *) tmp_dft_in,
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(short*) &common->rxdataF[aa][fp->ofdm_symbol_size*symbol],
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1
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);
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}
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else{
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dft( dftsize,(short *)&common->rxdata_7_5kHz[aa][rx_offset],
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(short*)&common->rxdataF[aa][fp->ofdm_symbol_size*symbol],
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1
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);
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}
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}
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}
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#ifdef DEBUG_FEP
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// LOG_D(PHY,"slot_fep: done\n");
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#endif
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return(0);
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}
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