diff options
Diffstat (limited to 'gnuradio-core/src/lib')
| -rw-r--r-- | gnuradio-core/src/lib/general/Makefile.am | 3 | ||||
| -rw-r--r-- | gnuradio-core/src/lib/general/general.i | 2 | ||||
| -rw-r--r-- | gnuradio-core/src/lib/general/gr_dd_mpsk_sync_cc.cc | 196 | ||||
| -rw-r--r-- | gnuradio-core/src/lib/general/gr_dd_mpsk_sync_cc.h | 93 | ||||
| -rw-r--r-- | gnuradio-core/src/lib/general/gr_dd_mpsk_sync_cc.i | 34 |
5 files changed, 0 insertions, 328 deletions
diff --git a/gnuradio-core/src/lib/general/Makefile.am b/gnuradio-core/src/lib/general/Makefile.am index b5f5c346b..3d8a42805 100644 --- a/gnuradio-core/src/lib/general/Makefile.am +++ b/gnuradio-core/src/lib/general/Makefile.am @@ -60,7 +60,6 @@ libgeneral_la_SOURCES = \ gr_cpfsk_bc.cc \ gr_crc32.cc \ gr_ctcss_squelch_ff.cc \ - gr_dd_mpsk_sync_cc.cc \ gr_decode_ccsds_27_fb.cc \ gr_deinterleave.cc \ gr_delay.cc \ @@ -215,7 +214,6 @@ grinclude_HEADERS = \ gr_cpfsk_bc.h \ gr_crc32.h \ gr_ctcss_squelch_ff.h \ - gr_dd_mpsk_sync_cc.h \ gr_decode_ccsds_27_fb.h \ gr_diff_decoder_bb.h \ gr_diff_encoder_bb.h \ @@ -386,7 +384,6 @@ swiginclude_HEADERS = \ gr_cpfsk_bc.i \ gr_crc32.i \ gr_ctcss_squelch_ff.i \ - gr_dd_mpsk_sync_cc.i \ gr_decode_ccsds_27_fb.i \ gr_diff_decoder_bb.i \ gr_diff_encoder_bb.i \ diff --git a/gnuradio-core/src/lib/general/general.i b/gnuradio-core/src/lib/general/general.i index 6929f1e6e..68cafce2e 100644 --- a/gnuradio-core/src/lib/general/general.i +++ b/gnuradio-core/src/lib/general/general.i @@ -80,7 +80,6 @@ #include <gr_threshold_ff.h> #include <gr_clock_recovery_mm_ff.h> #include <gr_clock_recovery_mm_cc.h> -#include <gr_dd_mpsk_sync_cc.h> #include <gr_packet_sink.h> #include <gr_lms_dfe_cc.h> #include <gr_lms_dfe_ff.h> @@ -202,7 +201,6 @@ %include "gr_threshold_ff.i" %include "gr_clock_recovery_mm_ff.i" %include "gr_clock_recovery_mm_cc.i" -%include "gr_dd_mpsk_sync_cc.i" %include "gr_packet_sink.i" %include "gr_lms_dfe_cc.i" %include "gr_lms_dfe_ff.i" diff --git a/gnuradio-core/src/lib/general/gr_dd_mpsk_sync_cc.cc b/gnuradio-core/src/lib/general/gr_dd_mpsk_sync_cc.cc deleted file mode 100644 index d4141efc7..000000000 --- a/gnuradio-core/src/lib/general/gr_dd_mpsk_sync_cc.cc +++ /dev/null @@ -1,196 +0,0 @@ -/* -*- c++ -*- */ -/* - * Copyright 2004 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. - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <gr_dd_mpsk_sync_cc.h> -#include <gr_io_signature.h> -#include <gr_sincos.h> -#include <gri_mmse_fir_interpolator_cc.h> -#include <math.h> -#include <stdexcept> -#include <cstdio> - -#include <gr_complex.h> - -#define M_TWOPI (2*M_PI) - -gr_dd_mpsk_sync_cc_sptr -gr_make_dd_mpsk_sync_cc (float alpha, float beta, float max_freq, float min_freq, float ref_phase, - float omega, float gain_omega, float mu, float gain_mu) -{ - return gr_dd_mpsk_sync_cc_sptr (new gr_dd_mpsk_sync_cc (alpha, beta, max_freq, min_freq,ref_phase, - omega,gain_omega,mu,gain_mu)); -} - -gr_dd_mpsk_sync_cc::gr_dd_mpsk_sync_cc (float alpha, float beta, float max_freq, float min_freq, - float ref_phase, - float omega, float gain_omega, float mu, float gain_mu) - : gr_block ("dd_mpsk_sync_cc", - gr_make_io_signature (1, 1, sizeof (gr_complex)), - gr_make_io_signature (1, 1, sizeof (gr_complex))), - d_alpha(alpha), d_beta(beta), - d_max_freq(max_freq), d_min_freq(min_freq), - d_ref_phase(ref_phase),d_omega(omega), d_gain_omega(gain_omega), - d_mu(mu), d_gain_mu(gain_mu), - d_phase(0), d_freq((max_freq+min_freq)/2), d_last_sample(0), - d_interp(new gri_mmse_fir_interpolator_cc()), - d_dl_idx(0) -{ - if (omega <= 0.0) - throw std::out_of_range ("clock rate must be > 0"); - if (gain_mu < 0 || gain_omega < 0) - throw std::out_of_range ("Gains must be non-negative"); - - assert(d_interp->ntaps() <= DLLEN); - - // zero double length delay line. - for (unsigned int i = 0; i < 2 * DLLEN; i++) - d_dl[i] = gr_complex(0.0,0.0); -} - -gr_dd_mpsk_sync_cc::~gr_dd_mpsk_sync_cc() -{ - delete d_interp; -} - -float -gr_dd_mpsk_sync_cc::phase_detector(gr_complex sample,float ref_phase) -{ - return ((sample.real()>0 ? 1.0 : -1.0) * sample.imag() - - (sample.imag()>0 ? 1.0 : -1.0) * sample.real()); -} - -void -gr_dd_mpsk_sync_cc::forecast(int noutput_items, gr_vector_int &ninput_items_required) -{ - unsigned ninputs = ninput_items_required.size(); - for (unsigned i=0; i < ninputs; i++) - ninput_items_required[i] = - (int) ceil((noutput_items * d_omega) + d_interp->ntaps()); -} -gr_complex -gr_dd_mpsk_sync_cc::slicer_45deg (gr_complex sample) -{ - float real,imag; - if(sample.real() > 0) - real=1; - else - real=-1; - if(sample.imag() > 0) - imag = 1; - else - imag = -1; - return gr_complex(real,imag); -} - -gr_complex -gr_dd_mpsk_sync_cc::slicer_0deg (gr_complex sample) -{ - gr_complex out; - if( fabs(sample.real()) > fabs(sample.imag()) ) { - if(sample.real() > 0) - return gr_complex(1.0,0.0); - else - return gr_complex(-1.0,0.0); - } - else { - if(sample.imag() > 0) - return gr_complex(0.0, 1.0); - else - return gr_complex(0.0, -1.0); - } -} - -int -gr_dd_mpsk_sync_cc::general_work (int noutput_items, - gr_vector_int &ninput_items, - gr_vector_const_void_star &input_items, - gr_vector_void_star &output_items) -{ - const gr_complex *in = (gr_complex *) input_items[0]; - gr_complex *out = (gr_complex *) output_items[0]; - - int ii, oo; - ii = 0; oo = 0; - - float error; - float t_imag, t_real; - gr_complex nco_out; - float mm_val; - - while (oo < noutput_items) { - // - // generate an output sample by interpolating between the carrier - // tracked samples in the delay line. d_mu, the fractional - // interpolation amount (in [0.0, 1.0]) is controlled by the - // symbol timing loop below. - // - out[oo] = d_interp->interpolate (&d_dl[d_dl_idx], d_mu); - - error = phase_detector(out[oo], d_ref_phase); - - d_freq = d_freq + d_beta * error; - d_phase = d_phase + d_alpha * error; - while(d_phase>M_TWOPI) - d_phase -= M_TWOPI; - while(d_phase<-M_TWOPI) - d_phase += M_TWOPI; - - if (d_freq > d_max_freq) - d_freq = d_max_freq; - else if (d_freq < d_min_freq) - d_freq = d_min_freq; - - mm_val = real(d_last_sample * slicer_0deg(out[oo]) - out[oo] * slicer_0deg(d_last_sample)); - d_last_sample = out[oo]; - - d_omega = d_omega + d_gain_omega * mm_val; - d_mu = d_mu + d_omega + d_gain_mu * mm_val; - - while(d_mu >= 1.0) { - // - // Generate more carrier tracked samples for the delay line - // - d_mu -= 1.0; - gr_sincosf(d_phase, &t_imag, &t_real); - nco_out = gr_complex(t_real, -t_imag); - gr_complex new_sample = in[ii] * nco_out; - - d_dl[d_dl_idx] = new_sample; // overwrite oldest sample - d_dl[(d_dl_idx + DLLEN)] = new_sample; // and second copy - d_dl_idx = (d_dl_idx+1) % DLLEN; // point to the new oldest sample - d_phase = d_phase + d_freq; - ii++; - } - oo++; - printf("%f\t%f\t%f\t%f\t%f\n",d_mu,d_omega,mm_val,d_freq,d_phase); - //printf("%f\t%f\t%f\t%f\t%f\t%f\t%f\n",mple).real(),slicer_0deg(d_last_sample).imag(),mm_val,d_omega,d_mu); - } - - assert(ii <= ninput_items[0]); - - consume_each (ii); - return noutput_items; -} diff --git a/gnuradio-core/src/lib/general/gr_dd_mpsk_sync_cc.h b/gnuradio-core/src/lib/general/gr_dd_mpsk_sync_cc.h deleted file mode 100644 index 4ffcd3771..000000000 --- a/gnuradio-core/src/lib/general/gr_dd_mpsk_sync_cc.h +++ /dev/null @@ -1,93 +0,0 @@ -/* -*- c++ -*- */ -/* - * Copyright 2004,2006 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_GR_DD_MPSK_SYNC_CC_H -#define INCLUDED_GR_DD_MPSK_SYNC_CC_H - -#include <gr_sync_block.h> - -class gri_mmse_fir_interpolator_cc; - -class gr_dd_mpsk_sync_cc; -typedef boost::shared_ptr<gr_dd_mpsk_sync_cc> gr_dd_mpsk_sync_cc_sptr; - -gr_dd_mpsk_sync_cc_sptr -gr_make_dd_mpsk_sync_cc (float alpha, float beta, - float max_freq, float min_freq, float ref_phase, - float omega, float gain_omega, float mu, float gain_mu); - -/*! - * \brief Decision directed M-PSK synchronous demod - * \ingroup sync_blk - * This block performs joint carrier tracking and symbol timing recovery. - * - * input: complex baseband; output: properly timed complex samples ready for slicing. - * - * N.B, at this point, it handles only QPSK. - */ - -class gr_dd_mpsk_sync_cc : public gr_block -{ - friend gr_dd_mpsk_sync_cc_sptr gr_make_dd_mpsk_sync_cc (float alpha, float beta, - float max_freq, float min_freq, float ref_phase, - float omega, float gain_omega, float mu, float gain_mu); -public: - ~gr_dd_mpsk_sync_cc (); - void forecast(int noutput_items, gr_vector_int &ninput_items_required); - 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_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; } - -protected: - gr_dd_mpsk_sync_cc (float alpha, float beta, float max_freq, float min_freq, float ref_phase, - float omega, float gain_omega, float mu, float gain_mu); - - int general_work (int noutput_items, - gr_vector_int &ninput_items, - gr_vector_const_void_star &input_items, - gr_vector_void_star &output_items); - -private: - static const unsigned int DLLEN = 8; // delay line length. - - float d_alpha,d_beta,d_max_freq,d_min_freq,d_ref_phase; - float d_omega, d_gain_omega, d_mu, d_gain_mu; - float d_phase, d_freq; - gr_complex slicer_45deg (gr_complex sample); - gr_complex slicer_0deg (gr_complex sample); - gr_complex d_last_sample; - gri_mmse_fir_interpolator_cc *d_interp; - - gr_complex d_dl[2 * DLLEN]; // Holds post carrier tracking samples. - // double length delay line to avoid wraps. - unsigned int d_dl_idx; // indexes oldest sample in delay line. - - float phase_detector(gr_complex sample,float ref_phase); -}; - -#endif diff --git a/gnuradio-core/src/lib/general/gr_dd_mpsk_sync_cc.i b/gnuradio-core/src/lib/general/gr_dd_mpsk_sync_cc.i deleted file mode 100644 index 17739248e..000000000 --- a/gnuradio-core/src/lib/general/gr_dd_mpsk_sync_cc.i +++ /dev/null @@ -1,34 +0,0 @@ -/* -*- c++ -*- */ -/* - * Copyright 2005 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. - */ - -GR_SWIG_BLOCK_MAGIC(gr,dd_mpsk_sync_cc) - - gr_dd_mpsk_sync_cc_sptr gr_make_dd_mpsk_sync_cc (float alpha, float beta, - float max_freq, float min_freq, float ref_phase, - float omega, float gain_omega, float mu, float gain_mu); - -class gr_dd_mpsk_sync_cc : public gr_block -{ - private: - gr_dd_mpsk_sync_cc (float alpha, float beta, float max_freq, float min_freq, float ref_phase, - float omega, float gain_omega, float mu, float gain_mu); -}; |