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Diffstat (limited to 'gr-digital/include/digital_ofdm_equalizer_static.h')
| -rw-r--r-- | gr-digital/include/digital_ofdm_equalizer_static.h | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/gr-digital/include/digital_ofdm_equalizer_static.h b/gr-digital/include/digital_ofdm_equalizer_static.h deleted file mode 100644 index 4537d329f4..0000000000 --- a/gr-digital/include/digital_ofdm_equalizer_static.h +++ /dev/null @@ -1,97 +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. - */ - -#ifndef INCLUDED_DIGITAL_OFDM_EQUALIZER_STATIC_H -#define INCLUDED_DIGITAL_OFDM_EQUALIZER_STATIC_H - -#include <digital/api.h> -#include <digital/constellation.h> -#include <digital_ofdm_equalizer_base.h> - -class digital_ofdm_equalizer_static; -typedef boost::shared_ptr<digital_ofdm_equalizer_static> digital_ofdm_equalizer_static_sptr; - -/* - * \param fft_len FFT length - * \param occupied_carriers List of occupied carriers, see ofdm_carrier_allocator - * for a description. - * \param pilot_carriers Position of pilot symbols, see ofdm_carrier_allocator - * for a description. - * \param pilot_symbols Value of pilot symbols, see ofdm_carrier_allocator - * for a description. - * \param symbols_skipped Starting position within occupied_carriers and pilot_carriers. - * If the first symbol of the frame was removed (e.g. to decode the - * header), set this make sure the pilot symbols are correctly - * identified. - * \param input_is_shifted Set this to false if the input signal is not shifted, i.e. - * the first input items is on the DC carrier. - * Note that a lot of the OFDM receiver blocks operate on shifted - * signals! - */ -DIGITAL_API digital_ofdm_equalizer_static_sptr -digital_make_ofdm_equalizer_static( - int fft_len, - const std::vector<std::vector<int> > &occupied_carriers = std::vector<std::vector<int> >(), - const std::vector<std::vector<int> > &pilot_carriers = std::vector<std::vector<int> >(), - const std::vector<std::vector<gr_complex> > &pilot_symbols = std::vector<std::vector<gr_complex> >(), - int symbols_skipped = 0, - bool input_is_shifted = true); - -/* \brief Very simple static equalizer for OFDM. - * \ingroup ofdm_blk - * \ingroup eq_blk - * - * This is an extremely simple equalizer. It will only work for high-SNR, very, very - * slowly changing channels. - * It simply divides the signal with the currently known channel state. Whenever - * a pilot symbol comes around, it updates the channel state on that particular - * carrier by dividing the received symbol with the known pilot symbol. - */ -class DIGITAL_API digital_ofdm_equalizer_static : public digital_ofdm_equalizer_1d_pilots -{ - public: - digital_ofdm_equalizer_static( - int fft_len, - const std::vector<std::vector<int> > &occupied_carriers = std::vector<std::vector<int> >(), - const std::vector<std::vector<int> > &pilot_carriers = std::vector<std::vector<int> >(), - const std::vector<std::vector<gr_complex> > &pilot_symbols = std::vector<std::vector<gr_complex> >(), - int symbols_skipped = 0, - bool input_is_shifted = true); - ~digital_ofdm_equalizer_static(); - - /*! \brief Divide the input signal with the current channel state. - * - * Does the following (and nothing else): - * - Divide every OFDM symbol with the current channel state - * - If a pilot symbol is found, re-set the channel state by dividing the received - * symbol with the known pilot symbol - */ - void equalize(gr_complex *frame, - int n_sym, - const std::vector<gr_complex> &initial_taps = std::vector<gr_complex>(), - const std::vector<gr_tag_t> &tags = std::vector<gr_tag_t>()); - - private: - -}; - -#endif /* INCLUDED_DIGITAL_OFDM_EQUALIZER_STATIC_H */ - |