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Diffstat (limited to 'gr-digital/lib/digital_ofdm_equalizer_base.cc')
| -rw-r--r-- | gr-digital/lib/digital_ofdm_equalizer_base.cc | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/gr-digital/lib/digital_ofdm_equalizer_base.cc b/gr-digital/lib/digital_ofdm_equalizer_base.cc deleted file mode 100644 index b4fa5df87e..0000000000 --- a/gr-digital/lib/digital_ofdm_equalizer_base.cc +++ /dev/null @@ -1,116 +0,0 @@ -/* -*- c++ -*- */ -/* Copyright 2012 Free Software Foundation, Inc. - * - * This file is part of GNU Radio - * - * GNU Radio is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 3, or (at your option) - * any later version. - * - * GNU Radio is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with GNU Radio; see the file COPYING. If not, write to - * the Free Software Foundation, Inc., 51 Franklin Street, - * Boston, MA 02110-1301, USA. - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "digital_ofdm_equalizer_base.h" - -// *** Base class **************************************************** -digital_ofdm_equalizer_base::digital_ofdm_equalizer_base(int fft_len) : - d_fft_len(fft_len), - d_carr_offset(0) -{ -} - - -digital_ofdm_equalizer_base::~digital_ofdm_equalizer_base() -{ -} - - -// *** Sub-Base class for 1D equalizers using pilot tones ************* -digital_ofdm_equalizer_1d_pilots::digital_ofdm_equalizer_1d_pilots( - int fft_len, - const std::vector<std::vector<int> > &occupied_carriers, - const std::vector<std::vector<int> > &pilot_carriers, - const std::vector<std::vector<gr_complex> > &pilot_symbols, - int symbols_skipped, - bool input_is_shifted) - : digital_ofdm_equalizer_base(fft_len), - d_occupied_carriers(fft_len, false), - d_pilot_carriers(pilot_carriers.size(), std::vector<bool>(fft_len, false)), - d_pilot_symbols(pilot_symbols.size(), std::vector<gr_complex>(fft_len, gr_complex(0, 0))), - d_symbols_skipped(symbols_skipped), - d_pilot_carr_set(symbols_skipped), - d_channel_state(fft_len, gr_complex(1, 0)) -{ - int fft_shift_width = 0; - if (input_is_shifted) { - fft_shift_width = fft_len/2; - } - if (!occupied_carriers.size()) { - std::fill(d_occupied_carriers.begin(), d_occupied_carriers.end(), true); - } else { - for (unsigned i = 0; i < occupied_carriers.size(); i++) { - for (unsigned k = 0; k < occupied_carriers[i].size(); k++) { - int carr_index = occupied_carriers[i][k]; - if (occupied_carriers[i][k] < 0) { - carr_index += fft_len; - } - if (carr_index >= fft_len || carr_index < 0) { - throw std::invalid_argument("data carrier index out of bounds."); - } - d_occupied_carriers[(carr_index + fft_shift_width) % fft_len] = true; - } - } - } - if (pilot_carriers.size()) { - for (unsigned i = 0; i < pilot_carriers.size(); i++) { - if (pilot_carriers[i].size() != pilot_symbols[i].size()) { - throw std::invalid_argument("pilot carriers and -symbols do not match."); - } - for (unsigned k = 0; k < pilot_carriers[i].size(); k++) { - int carr_index = pilot_carriers[i][k]; - if (pilot_carriers[i][k] < 0) { - carr_index += fft_len; - } - if (carr_index >= fft_len || carr_index < 0) { - throw std::invalid_argument("pilot carrier index out of bounds."); - } - d_pilot_carriers[i][(carr_index + fft_shift_width) % fft_len] = true; - d_pilot_symbols[i][(carr_index + fft_shift_width) % fft_len] = pilot_symbols[i][k]; - } - } - } -} - - -digital_ofdm_equalizer_1d_pilots::~digital_ofdm_equalizer_1d_pilots() -{ -} - - -void -digital_ofdm_equalizer_1d_pilots::reset() -{ - std::fill(d_channel_state.begin(), d_channel_state.end(), gr_complex(1, 0)); - d_pilot_carr_set = d_symbols_skipped; -} - - -void digital_ofdm_equalizer_1d_pilots::get_channel_state(std::vector<gr_complex> &taps) -{ - taps = d_channel_state; -} - - |