135 lines
4.0 KiB
C
135 lines
4.0 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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#include "refsig_defs_ue.h"
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void nr_gold_pbch(PHY_VARS_NR_UE* ue)
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{
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unsigned int n, x1, x2;
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unsigned int Nid, i_ssb, i_ssb2;
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unsigned char Lmax, l, n_hf, N_hf;
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uint8_t reset;
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Nid = ue->frame_parms.Nid_cell;
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Lmax = ue->frame_parms.Lmax;
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N_hf = (Lmax == 4)? 2:1;
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for (n_hf = 0; n_hf < N_hf; n_hf++) {
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for (l = 0; l < Lmax ; l++) {
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i_ssb = l & (Lmax-1);
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i_ssb2 = i_ssb + (n_hf<<2);
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reset = 1;
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x2 = (1<<11) * (i_ssb2 + 1) * ((Nid>>2) + 1) + (1<<6) * (i_ssb2 + 1) + (Nid&3);
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for (n=0; n<NR_PBCH_DMRS_LENGTH_DWORD; n++) {
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ue->nr_gold_pbch[n_hf][l][n] = lte_gold_generic(&x1, &x2, reset);
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reset = 0;
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}
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}
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}
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}
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void nr_gold_pdcch(PHY_VARS_NR_UE* ue,
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unsigned short nid)
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{
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unsigned char ns,l;
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unsigned int n,x1,x2,x2tmp0;
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uint8_t reset;
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int pdcch_dmrs_init_length = (((ue->frame_parms.N_RB_DL<<1)*3)>>5)+1;
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for (ns=0; ns<ue->frame_parms.slots_per_frame; ns++) {
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for (l=0; l<ue->frame_parms.symbols_per_slot; l++) {
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reset = 1;
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x2tmp0 = ((ue->frame_parms.symbols_per_slot*ns+l+1)*((nid<<1)+1))<<17;
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x2 = (x2tmp0+(nid<<1))%(1U<<31); //cinit
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for (n=0; n<pdcch_dmrs_init_length; n++) {
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ue->nr_gold_pdcch[0][ns][l][n] = lte_gold_generic(&x1, &x2, reset);
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reset = 0;
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}
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}
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}
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}
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void nr_gold_pdsch(PHY_VARS_NR_UE* ue,
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unsigned short *n_idDMRS)
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{
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unsigned int x1,x2,x2tmp0;
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unsigned int nid;
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uint8_t reset;
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int pdsch_dmrs_init_length = ((ue->frame_parms.N_RB_DL*12)>>5)+1;
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int nb_codewords = NR_MAX_NB_LAYERS > 4 ? 2 : 1;
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/// to be updated from higher layer
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//unsigned short lbar = 0;
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for (int nscid=0; nscid<nb_codewords; nscid++) {
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for (int ns=0; ns<ue->frame_parms.slots_per_frame; ns++) {
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nid = n_idDMRS[nscid];
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for (int l=0; l<ue->frame_parms.symbols_per_slot; l++) {
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reset = 1;
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x2tmp0 = ((ue->frame_parms.symbols_per_slot*ns+l+1)*((nid<<1)+1))<<17;
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x2 = (x2tmp0+(nid<<1)+nscid)%(1U<<31); //cinit
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LOG_D(PHY,"UE DMRS slot %d, symb %d, x2 %x, nscid %d\n",ns,l,x2,nscid);
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for (int n=0; n<pdsch_dmrs_init_length; n++) {
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ue->nr_gold_pdsch[0][ns][l][nscid][n] = lte_gold_generic(&x1, &x2, reset);
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reset = 0;
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}
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}
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}
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}
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}
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void nr_init_pusch_dmrs(PHY_VARS_NR_UE* ue,
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uint16_t *N_n_scid,
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uint8_t n_scid)
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{
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uint32_t x1, x2, n;
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uint8_t reset, slot, symb;
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NR_DL_FRAME_PARMS *fp = &ue->frame_parms;
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uint32_t ***pusch_dmrs = ue->nr_gold_pusch_dmrs;
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int pusch_dmrs_init_length = ((fp->N_RB_UL*12)>>5)+1;
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for (slot=0; slot<fp->slots_per_frame; slot++) {
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for (symb=0; symb<fp->symbols_per_slot; symb++) {
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reset = 1;
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x2 = ((1<<17) * (fp->symbols_per_slot*slot+symb+1) * ((N_n_scid[n_scid]<<1)+1) +((N_n_scid[n_scid]<<1)+n_scid));
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for (n=0; n<pusch_dmrs_init_length; n++) {
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pusch_dmrs[slot][symb][n] = lte_gold_generic(&x1, &x2, reset);
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reset = 0;
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}
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}
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}
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}
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