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_PN_CORRELATOR_CC_H
24 #define INCLUDED_GR_PN_CORRELATOR_CC_H
26 #include <gr_sync_decimator.h>
27 #include <gri_glfsr.h>
29 class gr_pn_correlator_cc;
30 typedef boost::shared_ptr<gr_pn_correlator_cc> gr_pn_correlator_cc_sptr;
32 gr_pn_correlator_cc_sptr
33 gr_make_pn_correlator_cc(int degree, int mask=0, int seed=1);
35 * \brief PN code sequential search correlator
37 * Receives complex baseband signal, outputs complex correlation against
38 * reference PN code, one sample per PN code period
41 class gr_pn_correlator_cc : public gr_sync_decimator
43 friend gr_pn_correlator_cc_sptr gr_make_pn_correlator_cc(int degree, int mask, int seed);
47 gri_glfsr *d_reference;
50 gr_pn_correlator_cc(int degree, int mask, int seed);
53 virtual int work(int noutput_items,
54 gr_vector_const_void_star &input_items,
55 gr_vector_void_star &output_items);
57 ~gr_pn_correlator_cc();
60 #endif /* INCLUDED_GR_PN_CORRELATOR_CC_H */