3 * Copyright 2007 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
23 #ifndef INCLUDED_GR_OFDM_QAM_MAPPER_H
24 #define INCLUDED_GR_OFDM_QAM_MAPPER_H
27 #include <gr_sync_block.h>
28 #include <gr_message.h>
29 #include <gr_msg_queue.h>
31 class gr_ofdm_qam_mapper;
32 typedef boost::shared_ptr<gr_ofdm_qam_mapper> gr_ofdm_qam_mapper_sptr;
34 gr_ofdm_qam_mapper_sptr
35 gr_make_ofdm_qam_mapper (unsigned msgq_limit,
36 unsigned occupied_carriers, unsigned int fft_length,
40 * \brief take a message in and map to a vector of complex
41 * constellation points suitable for IFFT input to be used in an ofdm
42 * modulator. Simple QAM version.
45 class gr_ofdm_qam_mapper : public gr_sync_block
47 friend gr_ofdm_qam_mapper_sptr
48 gr_make_ofdm_qam_mapper (unsigned msgq_limit,
49 unsigned occupied_carriers, unsigned int fft_length,
52 gr_ofdm_qam_mapper (unsigned msgq_limit,
53 unsigned occupied_carriers, unsigned int fft_length,
57 gr_msg_queue_sptr d_msgq;
58 gr_message_sptr d_msg;
59 unsigned d_msg_offset;
62 unsigned int d_occupied_carriers;
63 unsigned int d_fft_length;
64 unsigned int d_bit_offset;
68 std::vector<gr_complex> d_constellation_map;
70 void make_constellation();
73 ~gr_ofdm_qam_mapper(void);
75 gr_msg_queue_sptr msgq() const { return d_msgq; }
77 int work(int noutput_items,
78 gr_vector_const_void_star &input_items,
79 gr_vector_void_star &output_items);