diff options
Diffstat (limited to 'gr-digital/lib/clock_recovery_mm_cc_impl.h')
| -rw-r--r-- | gr-digital/lib/clock_recovery_mm_cc_impl.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/gr-digital/lib/clock_recovery_mm_cc_impl.h b/gr-digital/lib/clock_recovery_mm_cc_impl.h new file mode 100644 index 0000000000..fa62bd127f --- /dev/null +++ b/gr-digital/lib/clock_recovery_mm_cc_impl.h @@ -0,0 +1,87 @@ +/* -*- c++ -*- */ +/* + * Copyright 2004,2011,2012 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_CLOCK_RECOVERY_MM_CC_IMPL_H +#define INCLUDED_DIGITAL_CLOCK_RECOVERY_MM_CC_IMPL_H + +#include <digital/clock_recovery_mm_cc.h> +#include <filter/mmse_fir_interpolator_cc.h> + +namespace gr { + namespace digital { + + class clock_recovery_mm_cc_impl : public clock_recovery_mm_cc + { + public: + clock_recovery_mm_cc_impl(float omega, float gain_omega, + float mu, float gain_mu, + float omega_relative_limi); + ~clock_recovery_mm_cc_impl(); + + void forecast(int noutput_items, gr_vector_int &ninput_items_required); + int general_work(int noutput_items, + gr_vector_int &ninput_items, + gr_vector_const_void_star &input_items, + gr_vector_void_star &output_items); + + float mu() const { return d_mu;} + float omega() const { return d_omega;} + float gain_mu() const { return d_gain_mu;} + float gain_omega() const { return d_gain_omega;} + + void set_verbose (bool verbose) { d_verbose = verbose; } + void set_gain_mu (float gain_mu) { d_gain_mu = gain_mu; } + void set_gain_omega (float gain_omega) { d_gain_omega = gain_omega; } + void set_mu (float mu) { d_mu = mu; } + void set_omega (float omega) { + d_omega = omega; + d_min_omega = omega*(1.0 - d_omega_relative_limit); + d_max_omega = omega*(1.0 + d_omega_relative_limit); + d_omega_mid = 0.5*(d_min_omega+d_max_omega); + } + + private: + float d_mu; // fractional sample position [0.0, 1.0] + float d_omega; // nominal frequency + float d_gain_omega; // gain for adjusting omega + float d_min_omega; // minimum allowed omega + float d_max_omega; // maximum allowed omeg + float d_omega_relative_limit; // used to compute min and max omega + float d_omega_mid; // average omega + float d_gain_mu; // gain for adjusting mu + + gr_complex d_last_sample; + filter::mmse_fir_interpolator_cc *d_interp; + + bool d_verbose; + + gr_complex d_p_2T, d_p_1T, d_p_0T; + gr_complex d_c_2T, d_c_1T, d_c_0T; + + gr_complex slicer_0deg(gr_complex sample); + gr_complex slicer_45deg(gr_complex sample); + }; + + } /* namespace digital */ +} /* namespace gr */ + +#endif /* INCLUDED_DIGITAL_CLOCK_RECOVERY_MM_CC_IMPL_H */ |