3 * Copyright 2009 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
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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.
24 #ifndef INCLUDED_GR_PFB_CLOCK_SYNC_FFF_H
25 #define INCLUDED_GR_PFB_CLOCK_SYNC_FFF_H
29 class gr_pfb_clock_sync_fff;
30 typedef boost::shared_ptr<gr_pfb_clock_sync_fff> gr_pfb_clock_sync_fff_sptr;
31 gr_pfb_clock_sync_fff_sptr gr_make_pfb_clock_sync_fff (double sps, float gain,
32 const std::vector<float> &taps,
33 unsigned int filter_size=32,
35 float max_rate_deviation=1.5);
40 * \class gr_pfb_clock_sync_fff
42 * \brief Timing synchronizer using polyphase filterbanks
48 class gr_pfb_clock_sync_fff : public gr_block
52 * Build the polyphase filterbank timing synchronizer.
54 friend gr_pfb_clock_sync_fff_sptr gr_make_pfb_clock_sync_fff (double sps, float gain,
55 const std::vector<float> &taps,
56 unsigned int filter_size,
58 float max_rate_deviation);
66 std::vector<gr_fir_fff*> d_filters;
67 std::vector<gr_fir_fff*> d_diff_filters;
68 std::vector< std::vector<float> > d_taps;
69 std::vector< std::vector<float> > d_dtaps;
76 int d_taps_per_filter;
79 * Build the polyphase filterbank timing synchronizer.
81 gr_pfb_clock_sync_fff (double sps, float gain,
82 const std::vector<float> &taps,
83 unsigned int filter_size,
85 float max_rate_deviation);
87 void create_diff_taps(const std::vector<float> &newtaps,
88 std::vector<float> &difftaps);
91 ~gr_pfb_clock_sync_fff ();
94 * Resets the filterbank's filter taps with the new prototype filter
96 void set_taps (const std::vector<float> &taps,
97 std::vector< std::vector<float> > &ourtaps,
98 std::vector<gr_fir_fff*> &ourfilter);
99 std::vector<float> channel_taps(int channel);
100 std::vector<float> diff_channel_taps(int channel);
103 * Print all of the filterbank taps to screen.
106 void print_diff_taps();
108 void set_alpha(float alpha)
112 void set_beta(float beta)
117 void set_max_rate_deviation(float m)
122 int general_work (int noutput_items,
123 gr_vector_int &ninput_items,
124 gr_vector_const_void_star &input_items,
125 gr_vector_void_star &output_items);