3 * Copyright 2008 Free Software Foundation, Inc.
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6 * it under the terms of the GNU General Public License as published by
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13 * GNU General Public License for more details.
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20 #ifndef INCLUDED_GR_CPFSK_BC_H
21 #define INCLUDED_GR_CPFSK_BC_H
23 #include <gr_sync_interpolator.h>
27 typedef boost::shared_ptr<gr_cpfsk_bc> gr_cpfsk_bc_sptr;
29 gr_cpfsk_bc_sptr gr_make_cpfsk_bc(float k, float ampl, int samples_per_sym);
32 * \brief Perform continuous phase 2-level frequency shift keying modulation
33 * on an input stream of unpacked bits.
34 * \ingroup modulation_blk
36 * \param k modulation index
37 * \param ampl output amplitude
38 * \param samples_per_sym number of output samples per input bit
41 class gr_cpfsk_bc : public gr_sync_interpolator
44 friend gr_cpfsk_bc_sptr gr_make_cpfsk_bc(float k, float ampl, int samples_per_sym);
46 gr_cpfsk_bc(float k, float ampl, int samples_per_sym);
48 int d_samples_per_sym; // Samples per symbol, square pulse
49 float d_freq; // Modulation index*pi/samples_per_sym
50 float d_ampl; // Output amplitude
51 float d_phase; // Current phase
56 void set_amplitude(float amplitude) { d_ampl = amplitude; }
58 int work (int noutput_items,
59 gr_vector_const_void_star &input_items,
60 gr_vector_void_star &output_items);
63 #endif /* INCLUDED_GR_CPFSK_BC_H */