88 lines
3.3 KiB
C
88 lines
3.3 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 "nr_refsig.h"
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#include "nr_mod_table.h"
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void nr_generate_modulation_table() {
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float sqrt2 = 0.70711;
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float sqrt10 = 0.31623;
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float sqrt42 = 0.15430;
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float sqrt170 = 0.076696;
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float val = 32768.0;
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uint32_t i,j;
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short* table;
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// QPSK
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for (i=0; i<4; i++) {
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nr_qpsk_mod_table[i*2] = (short)(1-2*(i&1))*val*sqrt2*sqrt2;
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nr_qpsk_mod_table[i*2+1] = (short)(1-2*((i>>1)&1))*val*sqrt2*sqrt2;
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//printf("%d j%d\n",nr_qpsk_mod_table[i*2],nr_qpsk_mod_table[i*2+1]);
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}
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#if defined(__SSE2__)
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//QPSK m128
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table = (short*) nr_qpsk_byte_mod_table;
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for (i=0; i<256; i++) {
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for (j=0; j<4; j++) {
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table[i*8+(j*2)] = (short)(1-2*((i>>(j*2))&1))*val*sqrt2*sqrt2;
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table[i*8+(j*2)+1] = (short)(1-2*((i>>(j*2+1))&1))*val*sqrt2*sqrt2;
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//printf("%d j%d\n",nr_qpsk_byte_mod_table[i*8+(j*2)],nr_qpsk_byte_mod_table[i*8+(j*2)+1]);
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}
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}
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#endif
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//16QAM
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table = (short*) nr_16qam_byte_mod_table;
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for (i=0; i<256; i++) {
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for (j=0; j<2; j++) {
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table[i*4+(j*2)] = (short)((1-2*((i>>(j*4))&1))*(2-(1-2*((i>>(j*4+2))&1))))*val*sqrt10*sqrt2;
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table[i*4+(j*2)+1] = (short)((1-2*((i>>(j*4+1))&1))*(2-(1-2*((i>>(j*4+3))&1))))*val*sqrt10*sqrt2;
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//printf("%d j%d\n",nr_16qam_byte_mod_table[i*4+(j*2)],nr_16qam_byte_mod_table[i*4+(j*2)+1]);
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}
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}
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table = (short*) nr_16qam_mod_table;
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for (i=0; i<16; i++) {
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table[i*2] = (short)((1-2*(i&1))*(2-(1-2*((i>>2)&1))))*val*sqrt10*sqrt2;
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table[i*2+1] = (short)((1-2*((i>>1)&1))*(2-(1-2*((i>>3)&1))))*val*sqrt10*sqrt2;
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//printf("%d j%d\n",table[i*2],table[i*2+1]);
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}
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//64QAM
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table = (short*) nr_64qam_mod_table;
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for (i=0; i<4096; i++) {
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for (j=0; j<2; j++) {
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table[i*4+(j*2)] = (short)((1-2*((i>>(j*6))&1))*(4-(1-2*((i>>(j*6+2))&1))*(2-(1-2*((i>>(j*6+4))&1)))))*val*sqrt42*sqrt2;
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table[i*4+(j*2)+1] = (short)((1-2*((i>>(j*6+1))&1))*(4-(1-2*((i>>(j*6+3))&1))*(2-(1-2*((i>>(j*6+5))&1)))))*val*sqrt42*sqrt2;
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//printf("%d j%d\n",table[i*4+(j*2)],table[i*4+(j*2)+1]);
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}
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}
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//256QAM
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table = (short*) nr_256qam_mod_table;
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for (i=0; i<256; i++) {
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table[i*2] = (short)((1-2*(i&1))*(8-(1-2*((i>>2)&1))*(4-(1-2*((i>>4)&1))*(2-(1-2*((i>>6)&1))))))*val*sqrt170*sqrt2;
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table[i*2+1] = (short)((1-2*((i>>1)&1))*(8-(1-2*((i>>3)&1))*(4-(1-2*((i>>5)&1))*(2-(1-2*((i>>7)&1))))))*val*sqrt170*sqrt2;
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}
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}
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