Bastian Bloessl
234 lines
8.8 KiB
C++
234 lines
8.8 KiB
C++
/*
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* Copyright (C) 2016 Bastian Bloessl <bloessl@ccs-labs.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "constellations_impl.h"
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using namespace gr::ieee802_11;
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constellation_bpsk::sptr constellation_bpsk::make()
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{
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return constellation_bpsk::sptr(new constellation_bpsk_impl());
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}
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constellation_bpsk::constellation_bpsk() {}
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constellation_bpsk_impl::constellation_bpsk_impl()
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{
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d_constellation.resize(2);
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d_constellation[0] = gr_complex(-1, 0);
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d_constellation[1] = gr_complex(1, 0);
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d_rotational_symmetry = 2;
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d_dimensionality = 1;
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calc_arity();
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}
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constellation_bpsk_impl::~constellation_bpsk_impl() {}
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unsigned int constellation_bpsk_impl::decision_maker(const gr_complex* sample)
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{
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return (real(*sample) > 0);
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}
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/**********************************************************/
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constellation_qpsk::sptr constellation_qpsk::make()
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{
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return constellation_qpsk::sptr(new constellation_qpsk_impl());
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}
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constellation_qpsk::constellation_qpsk() {}
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constellation_qpsk_impl::constellation_qpsk_impl()
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{
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const float level = sqrt(float(0.5));
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d_constellation.resize(4);
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// Gray-coded
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d_constellation[0] = gr_complex(-level, -level);
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d_constellation[1] = gr_complex(level, -level);
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d_constellation[2] = gr_complex(-level, level);
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d_constellation[3] = gr_complex(level, level);
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d_rotational_symmetry = 4;
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d_dimensionality = 1;
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calc_arity();
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}
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constellation_qpsk_impl::~constellation_qpsk_impl() {}
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unsigned int constellation_qpsk_impl::decision_maker(const gr_complex* sample)
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{
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return 2 * (imag(*sample) > 0) + (real(*sample) > 0);
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}
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/**********************************************************/
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constellation_16qam::sptr constellation_16qam::make()
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{
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return constellation_16qam::sptr(new constellation_16qam_impl());
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}
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constellation_16qam::constellation_16qam() {}
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constellation_16qam_impl::constellation_16qam_impl()
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{
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const float level = sqrt(float(0.1));
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d_constellation.resize(16);
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d_constellation[0] = gr_complex(-3 * level, -3 * level);
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d_constellation[1] = gr_complex(3 * level, -3 * level);
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d_constellation[2] = gr_complex(-1 * level, -3 * level);
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d_constellation[3] = gr_complex(1 * level, -3 * level);
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d_constellation[4] = gr_complex(-3 * level, 3 * level);
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d_constellation[5] = gr_complex(3 * level, 3 * level);
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d_constellation[6] = gr_complex(-1 * level, 3 * level);
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d_constellation[7] = gr_complex(1 * level, 3 * level);
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d_constellation[8] = gr_complex(-3 * level, -1 * level);
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d_constellation[9] = gr_complex(3 * level, -1 * level);
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d_constellation[10] = gr_complex(-1 * level, -1 * level);
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d_constellation[11] = gr_complex(1 * level, -1 * level);
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d_constellation[12] = gr_complex(-3 * level, 1 * level);
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d_constellation[13] = gr_complex(3 * level, 1 * level);
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d_constellation[14] = gr_complex(-1 * level, 1 * level);
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d_constellation[15] = gr_complex(1 * level, 1 * level);
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d_rotational_symmetry = 4;
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d_dimensionality = 1;
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calc_arity();
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}
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constellation_16qam_impl::~constellation_16qam_impl() {}
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unsigned int constellation_16qam_impl::decision_maker(const gr_complex* sample)
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{
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unsigned int ret = 0;
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const float level = sqrt(float(0.1));
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float re = sample->real();
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float im = sample->imag();
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ret |= re > 0;
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ret |= (std::abs(re) < (2 * level)) << 1;
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ret |= (im > 0) << 2;
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ret |= (std::abs(im) < (2 * level)) << 3;
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return ret;
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}
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/**********************************************************/
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constellation_64qam::sptr constellation_64qam::make()
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{
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return constellation_64qam::sptr(new constellation_64qam_impl());
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}
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constellation_64qam::constellation_64qam() {}
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constellation_64qam_impl::constellation_64qam_impl()
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{
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const float level = sqrt(float(1 / 42.0));
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d_constellation.resize(64);
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d_constellation[0] = gr_complex(-7 * level, -7 * level);
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d_constellation[1] = gr_complex(7 * level, -7 * level);
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d_constellation[2] = gr_complex(-1 * level, -7 * level);
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d_constellation[3] = gr_complex(1 * level, -7 * level);
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d_constellation[4] = gr_complex(-5 * level, -7 * level);
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d_constellation[5] = gr_complex(5 * level, -7 * level);
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d_constellation[6] = gr_complex(-3 * level, -7 * level);
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d_constellation[7] = gr_complex(3 * level, -7 * level);
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d_constellation[8] = gr_complex(-7 * level, 7 * level);
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d_constellation[9] = gr_complex(7 * level, 7 * level);
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d_constellation[10] = gr_complex(-1 * level, 7 * level);
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d_constellation[11] = gr_complex(1 * level, 7 * level);
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d_constellation[12] = gr_complex(-5 * level, 7 * level);
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d_constellation[13] = gr_complex(5 * level, 7 * level);
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d_constellation[14] = gr_complex(-3 * level, 7 * level);
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d_constellation[15] = gr_complex(3 * level, 7 * level);
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d_constellation[16] = gr_complex(-7 * level, -1 * level);
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d_constellation[17] = gr_complex(7 * level, -1 * level);
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d_constellation[18] = gr_complex(-1 * level, -1 * level);
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d_constellation[19] = gr_complex(1 * level, -1 * level);
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d_constellation[20] = gr_complex(-5 * level, -1 * level);
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d_constellation[21] = gr_complex(5 * level, -1 * level);
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d_constellation[22] = gr_complex(-3 * level, -1 * level);
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d_constellation[23] = gr_complex(3 * level, -1 * level);
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d_constellation[24] = gr_complex(-7 * level, 1 * level);
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d_constellation[25] = gr_complex(7 * level, 1 * level);
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d_constellation[26] = gr_complex(-1 * level, 1 * level);
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d_constellation[27] = gr_complex(1 * level, 1 * level);
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d_constellation[28] = gr_complex(-5 * level, 1 * level);
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d_constellation[29] = gr_complex(5 * level, 1 * level);
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d_constellation[30] = gr_complex(-3 * level, 1 * level);
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d_constellation[31] = gr_complex(3 * level, 1 * level);
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d_constellation[32] = gr_complex(-7 * level, -5 * level);
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d_constellation[33] = gr_complex(7 * level, -5 * level);
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d_constellation[34] = gr_complex(-1 * level, -5 * level);
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d_constellation[35] = gr_complex(1 * level, -5 * level);
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d_constellation[36] = gr_complex(-5 * level, -5 * level);
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d_constellation[37] = gr_complex(5 * level, -5 * level);
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d_constellation[38] = gr_complex(-3 * level, -5 * level);
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d_constellation[39] = gr_complex(3 * level, -5 * level);
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d_constellation[40] = gr_complex(-7 * level, 5 * level);
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d_constellation[41] = gr_complex(7 * level, 5 * level);
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d_constellation[42] = gr_complex(-1 * level, 5 * level);
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d_constellation[43] = gr_complex(1 * level, 5 * level);
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d_constellation[44] = gr_complex(-5 * level, 5 * level);
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d_constellation[45] = gr_complex(5 * level, 5 * level);
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d_constellation[46] = gr_complex(-3 * level, 5 * level);
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d_constellation[47] = gr_complex(3 * level, 5 * level);
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d_constellation[48] = gr_complex(-7 * level, -3 * level);
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d_constellation[49] = gr_complex(7 * level, -3 * level);
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d_constellation[50] = gr_complex(-1 * level, -3 * level);
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d_constellation[51] = gr_complex(1 * level, -3 * level);
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d_constellation[52] = gr_complex(-5 * level, -3 * level);
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d_constellation[53] = gr_complex(5 * level, -3 * level);
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d_constellation[54] = gr_complex(-3 * level, -3 * level);
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d_constellation[55] = gr_complex(3 * level, -3 * level);
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d_constellation[56] = gr_complex(-7 * level, 3 * level);
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d_constellation[57] = gr_complex(7 * level, 3 * level);
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d_constellation[58] = gr_complex(-1 * level, 3 * level);
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d_constellation[59] = gr_complex(1 * level, 3 * level);
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d_constellation[60] = gr_complex(-5 * level, 3 * level);
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d_constellation[61] = gr_complex(5 * level, 3 * level);
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d_constellation[62] = gr_complex(-3 * level, 3 * level);
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d_constellation[63] = gr_complex(3 * level, 3 * level);
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d_rotational_symmetry = 4;
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d_dimensionality = 1;
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calc_arity();
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}
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constellation_64qam_impl::~constellation_64qam_impl() {}
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unsigned int constellation_64qam_impl::decision_maker(const gr_complex* sample)
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{
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unsigned int ret = 0;
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const float level = sqrt(float(1 / 42.0));
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float re = sample->real();
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float im = sample->imag();
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ret |= re > 0;
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ret |= (std::abs(re) < (4 * level)) << 1;
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ret |= (std::abs(re) < (6 * level) && std::abs(re) > (2 * level)) << 2;
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ret |= (im > 0) << 3;
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ret |= (std::abs(im) < (4 * level)) << 4;
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ret |= (std::abs(im) < (6 * level) && std::abs(im) > (2 * level)) << 5;
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return ret;
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}
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