diff options
Diffstat (limited to 'gr-digital/lib/digital_constellation_receiver_cb.cc')
| -rw-r--r-- | gr-digital/lib/digital_constellation_receiver_cb.cc | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/gr-digital/lib/digital_constellation_receiver_cb.cc b/gr-digital/lib/digital_constellation_receiver_cb.cc deleted file mode 100644 index faaa760fd..000000000 --- a/gr-digital/lib/digital_constellation_receiver_cb.cc +++ /dev/null @@ -1,126 +0,0 @@ -/* -*- c++ -*- */ -/* - * Copyright 2011 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_io_signature.h> -#include <gr_prefs.h> -#include <digital_constellation_receiver_cb.h> -#include <stdexcept> -#include <gr_math.h> -#include <gr_expj.h> - - -#define M_TWOPI (2*M_PI) -#define VERBOSE_MM 0 // Used for debugging symbol timing loop -#define VERBOSE_COSTAS 0 // Used for debugging phase and frequency tracking - -// Public constructor - -digital_constellation_receiver_cb_sptr -digital_make_constellation_receiver_cb(digital_constellation_sptr constell, - float loop_bw, float fmin, float fmax) -{ - return gnuradio::get_initial_sptr(new digital_constellation_receiver_cb (constell, - loop_bw, - fmin, fmax)); -} - -static int ios[] = {sizeof(char), sizeof(float), sizeof(float), sizeof(float), sizeof(gr_complex)}; -static std::vector<int> iosig(ios, ios+sizeof(ios)/sizeof(int)); -digital_constellation_receiver_cb::digital_constellation_receiver_cb (digital_constellation_sptr constellation, - float loop_bw, float fmin, float fmax) - : gr_block ("constellation_receiver_cb", - gr_make_io_signature (1, 1, sizeof (gr_complex)), - gr_make_io_signaturev (1, 5, iosig)), - gri_control_loop(loop_bw, fmax, fmin), - d_constellation(constellation), - d_current_const_point(0) -{ - if (d_constellation->dimensionality() != 1) - throw std::runtime_error ("This receiver only works with constellations of dimension 1."); -} - -void -digital_constellation_receiver_cb::phase_error_tracking(float phase_error) -{ - advance_loop(phase_error); - phase_wrap(); - frequency_limit(); - -#if VERBOSE_COSTAS - printf("cl: phase_error: %f phase: %f freq: %f sample: %f+j%f constellation: %f+j%f\n", - phase_error, d_phase, d_freq, sample.real(), sample.imag(), - d_constellation->points()[d_current_const_point].real(), - d_constellation->points()[d_current_const_point].imag()); -#endif -} - -int -digital_constellation_receiver_cb::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 = (const gr_complex *) input_items[0]; - unsigned char *out = (unsigned char *) output_items[0]; - - int i=0; - - float phase_error; - unsigned int sym_value; - gr_complex sample, nco; - - float *out_err = 0, *out_phase = 0, *out_freq = 0; - gr_complex *out_symbol; - if(output_items.size() == 5) { - out_err = (float *) output_items[1]; - out_phase = (float *) output_items[2]; - out_freq = (float *) output_items[3]; - out_symbol = (gr_complex*)output_items[4]; - } - - while((i < noutput_items) && (i < ninput_items[0])) { - sample = in[i]; - nco = gr_expj(d_phase); // get the NCO value for derotating the current sample - sample = nco*sample; // get the downconverted symbol - - sym_value = d_constellation->decision_maker_pe(&sample, &phase_error); - phase_error_tracking(phase_error); // corrects phase and frequency offsets - - out[i] = sym_value; - - if(output_items.size() == 5) { - out_err[i] = phase_error; - out_phase[i] = d_phase; - out_freq[i] = d_freq; - out_symbol[i] = sample; - } - i++; - } - - consume_each(i); - return i; -} - |