100 lines
4.0 KiB
C
100 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 "nr_refsig.h"
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#include "nr_mod_table.h"
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c16_t nr_qpsk_mod_table[4];
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simde__m128i nr_qpsk_byte_mod_table[256];
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int32_t nr_16qam_mod_table[16];
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int64_t nr_16qam_byte_mod_table[256];
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int64_t nr_64qam_mod_table[4096];
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int32_t nr_256qam_mod_table[256];
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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].r = (short)(1 - 2 * (i & 1)) * val * sqrt2 * sqrt2;
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nr_qpsk_mod_table[i].i = (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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//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++ = (short)(1 - 2 * ((i >> (j * 2)) & 1)) * val * sqrt2 * sqrt2;
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*table++ = (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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//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++ = (short)((1 - 2 * ((i >> (j * 4)) & 1)) * (2 - (1 - 2 * ((i >> (j * 4 + 2)) & 1)))) * val * sqrt10 * sqrt2;
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*table++ = (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++ = (short)((1 - 2 * (i & 1)) * (2 - (1 - 2 * ((i >> 2) & 1)))) * val * sqrt10 * sqrt2;
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*table++ = (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++ = (short)((1 - 2 * ((i >> (j * 6)) & 1))
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* (4 - (1 - 2 * ((i >> (j * 6 + 2)) & 1)) * (2 - (1 - 2 * ((i >> (j * 6 + 4)) & 1)))))
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* val * sqrt42 * sqrt2;
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*table++ = (short)((1 - 2 * ((i >> (j * 6 + 1)) & 1))
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* (4 - (1 - 2 * ((i >> (j * 6 + 3)) & 1)) * (2 - (1 - 2 * ((i >> (j * 6 + 5)) & 1)))))
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* 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++ = (short)((1 - 2 * (i & 1))
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* (8 - (1 - 2 * ((i >> 2) & 1)) * (4 - (1 - 2 * ((i >> 4) & 1)) * (2 - (1 - 2 * ((i >> 6) & 1))))))
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* val * sqrt170 * sqrt2;
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*table++ = (short)((1 - 2 * ((i >> 1) & 1))
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* (8 - (1 - 2 * ((i >> 3) & 1)) * (4 - (1 - 2 * ((i >> 5) & 1)) * (2 - (1 - 2 * ((i >> 7) & 1))))))
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* val * sqrt170 * sqrt2;
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}
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}
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