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Diffstat (limited to 'gr-digital/include/digital_ofdm_insert_preamble.h')
| -rw-r--r-- | gr-digital/include/digital_ofdm_insert_preamble.h | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/gr-digital/include/digital_ofdm_insert_preamble.h b/gr-digital/include/digital_ofdm_insert_preamble.h deleted file mode 100644 index fa44558add..0000000000 --- a/gr-digital/include/digital_ofdm_insert_preamble.h +++ /dev/null @@ -1,107 +0,0 @@ -/* -*- c++ -*- */ -/* - * Copyright 2007,2011 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 this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#ifndef INCLUDED_DIGITAL_OFDM_INSERT_PREAMBLE_H -#define INCLUDED_DIGITAL_OFDM_INSERT_PREAMBLE_H - -#include <digital_api.h> -#include <gr_block.h> -#include <vector> - -class digital_ofdm_insert_preamble; -typedef boost::shared_ptr<digital_ofdm_insert_preamble> digital_ofdm_insert_preamble_sptr; - -DIGITAL_API digital_ofdm_insert_preamble_sptr -digital_make_ofdm_insert_preamble(int fft_length, - const std::vector<std::vector<gr_complex> > &preamble); - -/*! - * \brief insert "pre-modulated" preamble symbols before each payload. - * \ingroup sync_blk - * \ingroup ofdm_blk - * - * <pre> - * input 1: stream of vectors of gr_complex [fft_length] - * These are the modulated symbols of the payload. - * - * input 2: stream of char. The LSB indicates whether the corresponding - * symbol on input 1 is the first symbol of the payload or not. - * It's a 1 if the corresponding symbol is the first symbol, - * otherwise 0. - * - * N.B., this implies that there must be at least 1 symbol in the payload. - * - * - * output 1: stream of vectors of gr_complex [fft_length] - * These include the preamble symbols and the payload symbols. - * - * output 2: stream of char. The LSB indicates whether the corresponding - * symbol on input 1 is the first symbol of a packet (i.e., the - * first symbol of the preamble.) It's a 1 if the corresponding - * symbol is the first symbol, otherwise 0. - * </pre> - * - * \param fft_length length of each symbol in samples. - * \param preamble vector of symbols that represent the pre-modulated preamble. - */ - -class DIGITAL_API digital_ofdm_insert_preamble : public gr_block -{ - friend DIGITAL_API digital_ofdm_insert_preamble_sptr - digital_make_ofdm_insert_preamble(int fft_length, - const std::vector<std::vector<gr_complex> > &preamble); - -protected: - digital_ofdm_insert_preamble(int fft_length, - const std::vector<std::vector<gr_complex> > &preamble); - -private: - enum state_t { - ST_IDLE, - ST_PREAMBLE, - ST_FIRST_PAYLOAD, - ST_PAYLOAD - }; - - int d_fft_length; - const std::vector<std::vector<gr_complex> > d_preamble; - state_t d_state; - int d_nsymbols_output; - int d_pending_flag; - - void enter_idle(); - void enter_first_payload(); - void enter_payload(); - - -public: - ~digital_ofdm_insert_preamble(); - void enter_preamble(); - - int general_work (int noutput_items, - gr_vector_int &ninput_items, - gr_vector_const_void_star &input_items, - gr_vector_void_star &output_items); - void forecast (int noutput_items, gr_vector_int &ninput_items_required); - -}; - -#endif /* INCLUDED_DIGITAL_OFDM_INSERT_PREAMBLE_H */ |