mirror of https://github.com/PentHertz/srsLTE.git
167 lines
6.4 KiB
C
167 lines
6.4 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2015 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of the srsLTE library.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include <stdbool.h>
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#include <complex.h>
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#include <stdint.h>
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#include <math.h>
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#include "srslte/modem/modem_table.h"
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#include "lte_tables.h"
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/**
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* Set the BPSK modulation table */
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void set_BPSKtable(cf_t* table)
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{
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// LTE-BPSK constellation:
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// Q
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// | 0
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//---------> I
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// 1 |
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table[0] = BPSK_LEVEL + BPSK_LEVEL*_Complex_I;
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table[1] = -BPSK_LEVEL -BPSK_LEVEL*_Complex_I;
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}
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/**
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* Set the QPSK modulation table */
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void set_QPSKtable(cf_t* table)
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{
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// LTE-QPSK constellation:
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// Q
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// 10 | 00
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//-----------> I
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// 11 | 01
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table[0] = QPSK_LEVEL + QPSK_LEVEL*_Complex_I;
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table[1] = QPSK_LEVEL - QPSK_LEVEL*_Complex_I;
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table[2] = -QPSK_LEVEL + QPSK_LEVEL*_Complex_I;
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table[3] = -QPSK_LEVEL - QPSK_LEVEL*_Complex_I;
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}
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/**
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* Set the 16QAM modulation table */
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void set_16QAMtable(cf_t* table)
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{
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// LTE-16QAM constellation:
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// Q
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// 1011 1001 | 0001 0011
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// 1010 1000 | 0000 0010
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//---------------------------------> I
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// 1110 1100 | 0100 0110
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// 1111 1101 | 0101 0111
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table[0] = QAM16_LEVEL_1 + QAM16_LEVEL_1*_Complex_I;
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table[1] = QAM16_LEVEL_1 + QAM16_LEVEL_2*_Complex_I;
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table[2] = QAM16_LEVEL_2 + QAM16_LEVEL_1*_Complex_I;
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table[3] = QAM16_LEVEL_2 + QAM16_LEVEL_2*_Complex_I;
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table[4] = QAM16_LEVEL_1 - QAM16_LEVEL_1*_Complex_I;
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table[5] = QAM16_LEVEL_1 - QAM16_LEVEL_2*_Complex_I;
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table[6] = QAM16_LEVEL_2 - QAM16_LEVEL_1*_Complex_I;
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table[7] = QAM16_LEVEL_2 - QAM16_LEVEL_2*_Complex_I;
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table[8] = -QAM16_LEVEL_1 + QAM16_LEVEL_1*_Complex_I;
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table[9] = -QAM16_LEVEL_1 + QAM16_LEVEL_2*_Complex_I;
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table[10] = -QAM16_LEVEL_2 + QAM16_LEVEL_1*_Complex_I;
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table[11] = -QAM16_LEVEL_2 + QAM16_LEVEL_2*_Complex_I;
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table[12] = -QAM16_LEVEL_1 - QAM16_LEVEL_1*_Complex_I;
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table[13] = -QAM16_LEVEL_1 - QAM16_LEVEL_2*_Complex_I;
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table[14] = -QAM16_LEVEL_2 - QAM16_LEVEL_1*_Complex_I;
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table[15] = -QAM16_LEVEL_2 - QAM16_LEVEL_2*_Complex_I;
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}
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/**
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* Set the 64QAM modulation table */
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void set_64QAMtable(cf_t* table)
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{
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// LTE-64QAM constellation:
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// see [3GPP TS 36.211 version 10.5.0 Release 10, Section 7.1.4]
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table[0] = QAM64_LEVEL_2 + QAM64_LEVEL_2*_Complex_I;
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table[1] = QAM64_LEVEL_2 + QAM64_LEVEL_1*_Complex_I;
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table[2] = QAM64_LEVEL_1 + QAM64_LEVEL_2*_Complex_I;
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table[3] = QAM64_LEVEL_1 + QAM64_LEVEL_1*_Complex_I;
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table[4] = QAM64_LEVEL_2 + QAM64_LEVEL_3*_Complex_I;
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table[5] = QAM64_LEVEL_2 + QAM64_LEVEL_4*_Complex_I;
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table[6] = QAM64_LEVEL_1 + QAM64_LEVEL_3*_Complex_I;
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table[7] = QAM64_LEVEL_1 + QAM64_LEVEL_4*_Complex_I;
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table[8] = QAM64_LEVEL_3 + QAM64_LEVEL_2*_Complex_I;
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table[9] = QAM64_LEVEL_3 + QAM64_LEVEL_1*_Complex_I;
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table[10] = QAM64_LEVEL_4 + QAM64_LEVEL_2*_Complex_I;
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table[11] = QAM64_LEVEL_4 + QAM64_LEVEL_1*_Complex_I;
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table[12] = QAM64_LEVEL_3 + QAM64_LEVEL_3*_Complex_I;
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table[13] = QAM64_LEVEL_3 + QAM64_LEVEL_4*_Complex_I;
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table[14] = QAM64_LEVEL_4 + QAM64_LEVEL_3*_Complex_I;
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table[15] = QAM64_LEVEL_4 + QAM64_LEVEL_4*_Complex_I;
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table[16] = QAM64_LEVEL_2 - QAM64_LEVEL_2*_Complex_I;
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table[17] = QAM64_LEVEL_2 - QAM64_LEVEL_1*_Complex_I;
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table[18] = QAM64_LEVEL_1 - QAM64_LEVEL_2*_Complex_I;
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table[19] = QAM64_LEVEL_1 - QAM64_LEVEL_1*_Complex_I;
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table[20] = QAM64_LEVEL_2 - QAM64_LEVEL_3*_Complex_I;
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table[21] = QAM64_LEVEL_2 - QAM64_LEVEL_4*_Complex_I;
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table[22] = QAM64_LEVEL_1 - QAM64_LEVEL_3*_Complex_I;
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table[23] = QAM64_LEVEL_1 - QAM64_LEVEL_4*_Complex_I;
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table[24] = QAM64_LEVEL_3 - QAM64_LEVEL_2*_Complex_I;
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table[25] = QAM64_LEVEL_3 - QAM64_LEVEL_1*_Complex_I;
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table[26] = QAM64_LEVEL_4 - QAM64_LEVEL_2*_Complex_I;
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table[27] = QAM64_LEVEL_4 - QAM64_LEVEL_1*_Complex_I;
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table[28] = QAM64_LEVEL_3 - QAM64_LEVEL_3*_Complex_I;
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table[29] = QAM64_LEVEL_3 - QAM64_LEVEL_4*_Complex_I;
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table[30] = QAM64_LEVEL_4 - QAM64_LEVEL_3*_Complex_I;
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table[31] = QAM64_LEVEL_4 - QAM64_LEVEL_4*_Complex_I;
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table[32] = -QAM64_LEVEL_2 + QAM64_LEVEL_2*_Complex_I;
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table[33] = -QAM64_LEVEL_2 + QAM64_LEVEL_1*_Complex_I;
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table[34] = -QAM64_LEVEL_1 + QAM64_LEVEL_2*_Complex_I;
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table[35] = -QAM64_LEVEL_1 + QAM64_LEVEL_1*_Complex_I;
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table[36] = -QAM64_LEVEL_2 + QAM64_LEVEL_3*_Complex_I;
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table[37] = -QAM64_LEVEL_2 + QAM64_LEVEL_4*_Complex_I;
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table[38] = -QAM64_LEVEL_1 + QAM64_LEVEL_3*_Complex_I;
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table[39] = -QAM64_LEVEL_1 + QAM64_LEVEL_4*_Complex_I;
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table[40] = -QAM64_LEVEL_3 + QAM64_LEVEL_2*_Complex_I;
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table[41] = -QAM64_LEVEL_3 + QAM64_LEVEL_1*_Complex_I;
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table[42] = -QAM64_LEVEL_4 + QAM64_LEVEL_2*_Complex_I;
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table[43] = -QAM64_LEVEL_4 + QAM64_LEVEL_1*_Complex_I;
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table[44] = -QAM64_LEVEL_3 + QAM64_LEVEL_3*_Complex_I;
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table[45] = -QAM64_LEVEL_3 + QAM64_LEVEL_4*_Complex_I;
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table[46] = -QAM64_LEVEL_4 + QAM64_LEVEL_3*_Complex_I;
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table[47] = -QAM64_LEVEL_4 + QAM64_LEVEL_4*_Complex_I;
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table[48] = -QAM64_LEVEL_2 - QAM64_LEVEL_2*_Complex_I;
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table[49] = -QAM64_LEVEL_2 - QAM64_LEVEL_1*_Complex_I;
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table[50] = -QAM64_LEVEL_1 - QAM64_LEVEL_2*_Complex_I;
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table[51] = -QAM64_LEVEL_1 - QAM64_LEVEL_1*_Complex_I;
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table[52] = -QAM64_LEVEL_2 - QAM64_LEVEL_3*_Complex_I;
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table[53] = -QAM64_LEVEL_2 - QAM64_LEVEL_4*_Complex_I;
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table[54] = -QAM64_LEVEL_1 - QAM64_LEVEL_3*_Complex_I;
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table[55] = -QAM64_LEVEL_1 - QAM64_LEVEL_4*_Complex_I;
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table[56] = -QAM64_LEVEL_3 - QAM64_LEVEL_2*_Complex_I;
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table[57] = -QAM64_LEVEL_3 - QAM64_LEVEL_1*_Complex_I;
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table[58] = -QAM64_LEVEL_4 - QAM64_LEVEL_2*_Complex_I;
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table[59] = -QAM64_LEVEL_4 - QAM64_LEVEL_1*_Complex_I;
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table[60] = -QAM64_LEVEL_3 - QAM64_LEVEL_3*_Complex_I;
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table[61] = -QAM64_LEVEL_3 - QAM64_LEVEL_4*_Complex_I;
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table[62] = -QAM64_LEVEL_4 - QAM64_LEVEL_3*_Complex_I;
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table[63] = -QAM64_LEVEL_4 - QAM64_LEVEL_4*_Complex_I;
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}
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