GNU Radio 3.6.3 C++ API
gr_ofdm_bpsk_demapper.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2006 Free Software Foundation, Inc.
4  *
5  * This file is part of GNU Radio
6  *
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)
10  * any later version.
11  *
12  * GNU Radio is distributed in the hope that it will be useful,
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.
16  *
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.
21  */
22 
23 #ifndef INCLUDED_GR_OFDM_BPSK_DEMAPPER_H
24 #define INCLUDED_GR_OFDM_BPSK_DEMAPPER_H
25 
26 
27 #include <gr_core_api.h>
28 #include <gr_block.h>
29 #include <vector>
30 
33 
35 gr_make_ofdm_bpsk_demapper (unsigned int occupied_carriers);
36 
37 
38 /*!
39  * \brief take a vector of complex constellation points in from an FFT
40  * and demodulate to a stream of bits. Simple BPSK version.
41  * \ingroup ofdm_blk
42  */
44 {
46  gr_make_ofdm_bpsk_demapper (unsigned int occupied_carriers);
47 
48  protected:
49  gr_ofdm_bpsk_demapper (unsigned int occupied_carriers);
50 
51  private:
52  unsigned char slicer(gr_complex x);
53 
54  unsigned int d_occupied_carriers;
55  unsigned int d_byte_offset;
56  unsigned char d_partial_byte;
57 
58  void forecast(int noutput_items, gr_vector_int &ninput_items_required);
59 
60  public:
61  ~gr_ofdm_bpsk_demapper(void);
62  int general_work(int noutput_items,
63  gr_vector_int &ninput_items,
64  gr_vector_const_void_star &input_items,
65  gr_vector_void_star &output_items);
66 };
67 
68 
69 #endif