GNU Radio C++ API
gr_pn_correlator_cc.h
Go to the documentation of this file.
1 /* -*- c++ -*- */
2 /*
3  * Copyright 2007 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_PN_CORRELATOR_CC_H
24 #define INCLUDED_GR_PN_CORRELATOR_CC_H
25 
26 #include <gr_core_api.h>
27 #include <gr_sync_decimator.h>
28 #include <gri_glfsr.h>
29 
32 
34 gr_make_pn_correlator_cc(int degree, int mask=0, int seed=1);
35 /*!
36  * \brief PN code sequential search correlator
37  *
38  * \ingroup sync_blk
39  * Receives complex baseband signal, outputs complex correlation against
40  * reference PN code, one sample per PN code period
41  */
42 
44 {
45  friend GR_CORE_API gr_pn_correlator_cc_sptr gr_make_pn_correlator_cc(int degree, int mask, int seed);
46 
47  int d_len;
48  float d_pn;
49  gri_glfsr *d_reference;
50 
51  protected:
52  gr_pn_correlator_cc(int degree, int mask, int seed);
53 
54  public:
55  virtual int work(int noutput_items,
56  gr_vector_const_void_star &input_items,
57  gr_vector_void_star &output_items);
58 
60 };
61 
62 #endif /* INCLUDED_GR_PN_CORRELATOR_CC_H */