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Diffstat (limited to 'gr-digital/lib/lms_dd_equalizer_cc_impl.h')
| -rw-r--r-- | gr-digital/lib/lms_dd_equalizer_cc_impl.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/gr-digital/lib/lms_dd_equalizer_cc_impl.h b/gr-digital/lib/lms_dd_equalizer_cc_impl.h new file mode 100644 index 0000000000..ca6ba4d84c --- /dev/null +++ b/gr-digital/lib/lms_dd_equalizer_cc_impl.h @@ -0,0 +1,80 @@ +/* -*- c++ -*- */ +/* + * Copyright 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_LMS_DD_EQUALIZER_CC_IMPL_H +#define INCLUDED_DIGITAL_LMS_DD_EQUALIZER_CC_IMPL_H + +#include <digital/lms_dd_equalizer_cc.h> +#include <filter/fir_filter.h> +#include <stdexcept> + +namespace gr { + namespace digital { + + class lms_dd_equalizer_cc_impl + : public lms_dd_equalizer_cc, filter::kernel::fir_filter_ccc + { + private: + std::vector<gr_complex> d_new_taps; + bool d_updated; + gr_complex d_error; + + float d_mu; + constellation_sptr d_cnst; + + protected: + gr_complex error(const gr_complex &out); + void update_tap(gr_complex &tap, const gr_complex &in); + + public: + lms_dd_equalizer_cc_impl(int num_taps, + float mu, int sps, + constellation_sptr cnst); + ~lms_dd_equalizer_cc_impl(); + + void set_taps(const std::vector<gr_complex> &taps); + std::vector<gr_complex> taps() const; + + float gain() const + { + return d_mu; + } + + void set_gain(float mu) + { + if(mu < 0.0f || mu > 1.0f) { + throw std::out_of_range("lms_dd_equalizer_impl::set_mu: Gain value must in [0, 1]"); + } + else { + d_mu = mu; + } + } + + 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_LMS_DD_EQUALIZER_CC_IMPL_H */ |