diff options
| author | Ben Reynwar <ben@reynwar.net> | 2013-05-19 02:55:33 -0700 |
|---|---|---|
| committer | Ben Reynwar <ben@reynwar.net> | 2013-05-19 02:55:33 -0700 |
| commit | bb01988e75d50d82cbb44c1a49c86c1d08f05665 (patch) | |
| tree | 0528dac14476d37f2cde7374a8fcb3428f879c69 /gr-atsc/include/gnuradio/atsc/equalizer_lms_impl.h | |
| parent | e4f0319eced22c112f7e6a4cc45bc2036d285332 (diff) | |
| parent | 0fa219774dcf9141ae91204f948c029b05673f3f (diff) | |
Merged in next_docs branch.
Diffstat (limited to 'gr-atsc/include/gnuradio/atsc/equalizer_lms_impl.h')
| -rw-r--r-- | gr-atsc/include/gnuradio/atsc/equalizer_lms_impl.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/gr-atsc/include/gnuradio/atsc/equalizer_lms_impl.h b/gr-atsc/include/gnuradio/atsc/equalizer_lms_impl.h new file mode 100644 index 0000000000..0daa00e67c --- /dev/null +++ b/gr-atsc/include/gnuradio/atsc/equalizer_lms_impl.h @@ -0,0 +1,79 @@ +/* -*- c++ -*- */ +/* + * Copyright 2002 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 _ATSC_EQUALIZER_LMS_H_ +#define _ATSC_EQUALIZER_LMS_H_ + +#include <gnuradio/atsc/api.h> +#include <gnuradio/atsc/equalizer_impl.h> +#include <vector> +#include <stdio.h> + +class ATSC_API atsci_equalizer_lms : public atsci_equalizer +{ +public: + atsci_equalizer_lms (); + virtual ~atsci_equalizer_lms (); + + virtual void reset (); + virtual int ntaps () const; + virtual int npretaps () const; + std::vector<double> taps () { + return d_taps; + } + +protected: + FILE *trainingfile; + virtual void filter_normal (const float *input_samples, + float *output_samples, + int nsamples); + + virtual void filter_data_seg_sync (const float *input_samples, + float *output_samples, + int nsamples, + int offset); + + virtual void filter_field_sync (const float *input_samples, + float *output_samples, + int nsamples, + int offset, + int which_field); + +private: + std::vector<double> d_taps; + + void filterN (const float *input_samples, + float *output_samples, + int nsamples); + + void adaptN (const float *input_samples, + const float *training_pattern, + float *output_samples, + int nsamples); + + float filter1 (const float input[]); + float adapt1 (const float input[], float ideal_output); + +}; + + +#endif /* _ATSC_EQUALIZER_LMS_H_ */ |