GNU Radio 3.5.3.2 C++ API
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00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2007 Free Software Foundation, Inc. 00004 * 00005 * This file is part of GNU Radio 00006 * 00007 * GNU Radio is free software; you can redistribute it and/or modify 00008 * it under the terms of the GNU General Public License as published by 00009 * the Free Software Foundation; either version 3, or (at your option) 00010 * any later version. 00011 * 00012 * GNU Radio is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 * GNU General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU General Public License 00018 * along with GNU Radio; see the file COPYING. If not, write to 00019 * the Free Software Foundation, Inc., 51 Franklin Street, 00020 * Boston, MA 02110-1301, USA. 00021 */ 00022 00023 #ifndef INCLUDED_GR_PN_CORRELATOR_CC_H 00024 #define INCLUDED_GR_PN_CORRELATOR_CC_H 00025 00026 #include <gr_core_api.h> 00027 #include <gr_sync_decimator.h> 00028 #include <gri_glfsr.h> 00029 00030 class gr_pn_correlator_cc; 00031 typedef boost::shared_ptr<gr_pn_correlator_cc> gr_pn_correlator_cc_sptr; 00032 00033 GR_CORE_API gr_pn_correlator_cc_sptr 00034 gr_make_pn_correlator_cc(int degree, int mask=0, int seed=1); 00035 /*! 00036 * \brief PN code sequential search correlator 00037 * 00038 * \ingroup sync_blk 00039 * Receives complex baseband signal, outputs complex correlation against 00040 * reference PN code, one sample per PN code period 00041 */ 00042 00043 class GR_CORE_API gr_pn_correlator_cc : public gr_sync_decimator 00044 { 00045 friend GR_CORE_API gr_pn_correlator_cc_sptr gr_make_pn_correlator_cc(int degree, int mask, int seed); 00046 00047 int d_len; 00048 float d_pn; 00049 gri_glfsr *d_reference; 00050 00051 protected: 00052 gr_pn_correlator_cc(int degree, int mask, int seed); 00053 00054 public: 00055 virtual int work(int noutput_items, 00056 gr_vector_const_void_star &input_items, 00057 gr_vector_void_star &output_items); 00058 00059 ~gr_pn_correlator_cc(); 00060 }; 00061 00062 #endif /* INCLUDED_GR_PN_CORRELATOR_CC_H */