/* * 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 */ #include "refsig_defs_ue.h" void nr_gold_pbch(PHY_VARS_NR_UE* ue) { unsigned int n, x1, x2; unsigned char Nid, i_ssb, i_ssb2; unsigned char Lmax, l, n_hf, N_hf; Nid = ue->frame_parms.Nid_cell; Lmax = 8; //(fp->dl_CarrierFreq < 3e9)? 4:8; N_hf = (Lmax == 4)? 2:1; for (n_hf = 0; n_hf < N_hf; n_hf++) { for (l = 0; l < Lmax ; l++) { i_ssb = l & (Lmax-1); i_ssb2 = (i_ssb<<2) + n_hf; x1 = 1 + (1<<31); x2 = (1<<11) * (i_ssb2 + 1) * ((Nid>>2) + 1) + (1<<6) * (i_ssb2 + 1) + (Nid&3); x2 = x2 ^ ((x2 ^ (x2>>1) ^ (x2>>2) ^ (x2>>3))<<31); // skip first 50 double words (1600 bits) for (n = 1; n < 50; n++) { x1 = (x1>>1) ^ (x1>>4); x1 = x1 ^ (x1<<31) ^ (x1<<28); x2 = (x2>>1) ^ (x2>>2) ^ (x2>>3) ^ (x2>>4); x2 = x2 ^ (x2<<31) ^ (x2<<30) ^ (x2<<29) ^ (x2<<28); } for (n=0; n<NR_PBCH_DMRS_LENGTH_DWORD; n++) { x1 = (x1>>1) ^ (x1>>4); x1 = x1 ^ (x1<<31) ^ (x1<<28); x2 = (x2>>1) ^ (x2>>2) ^ (x2>>3) ^ (x2>>4); x2 = x2 ^ (x2<<31) ^ (x2<<30) ^ (x2<<29) ^ (x2<<28); ue->nr_gold_pbch[n_hf][l][n] = x1 ^ x2; } } } } void nr_gold_pdsch(PHY_VARS_NR_UE* ue,unsigned short lbar,unsigned int nr_gold_pdsch[2][20][2][21],unsigned int Nid_cell, unsigned short *n_idDMRS, unsigned short length_dmrs) { unsigned char ns,l; unsigned int n,x1,x2,x2tmp0,x2tmp1, x2tmp2,x2s; int nscid; unsigned int nid; /// to be updated from higher layer //unsigned short lbar = 0; for (nscid=0; nscid<2; nscid++) { if (n_idDMRS) nid = n_idDMRS[nscid]; else nid = Nid_cell; for (ns=0; ns<20; ns++) { for (l=0; l<length_dmrs; l++) { x2tmp0 = ((14*ns+(lbar+l)+1)*((nid<<1)+1))<<17; x2 = (x2tmp0+(nid<<1))%(1<<31); //cinit x1 = 1+ (1<<31); x2=x2 ^ ((x2 ^ (x2>>1) ^ (x2>>2) ^ (x2>>3))<<31); // skip first 50 double words (1600 bits) for (n=1; n<50; n++) { x1 = (x1>>1) ^ (x1>>4); x1 = x1 ^ (x1<<31) ^ (x1<<28); x2 = (x2>>1) ^ (x2>>2) ^ (x2>>3) ^ (x2>>4); x2 = x2 ^ (x2<<31) ^ (x2<<30) ^ (x2<<29) ^ (x2<<28); //printf("x1 : %x, x2 : %x\n",x1,x2); } for (n=0; n<14; n++) { x1 = (x1>>1) ^ (x1>>4); x1 = x1 ^ (x1<<31) ^ (x1<<28); x2 = (x2>>1) ^ (x2>>2) ^ (x2>>3) ^ (x2>>4); x2 = x2 ^ (x2<<31) ^ (x2<<30) ^ (x2<<29) ^ (x2<<28); nr_gold_pdsch[nscid][ns][l][n] = x1^x2; //printf("n=%d : c %x\n",n,x1^x2); } } } } }