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Diffstat (limited to 'gr-digital/lib/fll_band_edge_cc_impl.h')
| -rw-r--r-- | gr-digital/lib/fll_band_edge_cc_impl.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/gr-digital/lib/fll_band_edge_cc_impl.h b/gr-digital/lib/fll_band_edge_cc_impl.h new file mode 100644 index 0000000000..55e338b38c --- /dev/null +++ b/gr-digital/lib/fll_band_edge_cc_impl.h @@ -0,0 +1,82 @@ +/* -*- c++ -*- */ +/* + * Copyright 2009,2011,2012 Free Software Foundation, Inc. + * + * This file is part of GNU Radio + * + * GNU Radio is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3, or (at your option) + * any later version. + * + * GNU Radio is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Radio; see the file COPYING. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, + * Boston, MA 02110-1301, USA. + */ + +#ifndef INCLUDED_DIGITAL_FLL_BAND_EDGE_CC_IMPL_H +#define INCLUDED_DIGITAL_FLL_BAND_EDGE_CC_IMPL_H + +#include <digital/fll_band_edge_cc.h> +#include <gri_control_loop.h> +#include <filter/fir_filter.h> + +namespace gr { + namespace digital { + + class fll_band_edge_cc_impl : + public fll_band_edge_cc + { + private: + float d_sps; + float d_rolloff; + int d_filter_size; + + std::vector<gr_complex> d_taps_lower; + std::vector<gr_complex> d_taps_upper; + bool d_updated; + std::vector<gr_complex> d_output_hist; + std::vector<gr_complex> d_fllbuffer; + gr::filter::kernel::fir_filter_ccc* d_filter_lower; + gr::filter::kernel::fir_filter_ccc* d_filter_upper; + + /*! + * Design the band-edge filter based on the number of samples + * per symbol, filter rolloff factor, and the filter size + * + * \param samps_per_sym (float) Number of samples per symbol of signal + * \param rolloff (float) Rolloff factor of signal + * \param filter_size (int) Size (in taps) of the filter + */ + void design_filter(float samps_per_sym, float rolloff, int filter_size); + + public: + fll_band_edge_cc_impl(float samps_per_sym, float rolloff, + int filter_size, float bandwidth); + ~fll_band_edge_cc_impl(); + + void set_samples_per_symbol(float sps); + void set_rolloff(float rolloff); + void set_filter_size(int filter_size); + + float samples_per_symbol() const; + float rolloff() const; + int filter_size() const; + + void print_taps(); + + int work(int noutput_items, + gr_vector_const_void_star &input_items, + gr_vector_void_star &output_items); + }; + + } /* namespace digital */ +} /* namespace gr */ + +#endif /* INCLUDED_DIGITAL_FLL_BAND_EDGE_CC_IMPL_H */ |