diff options
Diffstat (limited to 'gr-digital/lib/digital_mpsk_snr_est_cc.cc')
| -rw-r--r-- | gr-digital/lib/digital_mpsk_snr_est_cc.cc | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/gr-digital/lib/digital_mpsk_snr_est_cc.cc b/gr-digital/lib/digital_mpsk_snr_est_cc.cc deleted file mode 100644 index b5a60f0d38..0000000000 --- a/gr-digital/lib/digital_mpsk_snr_est_cc.cc +++ /dev/null @@ -1,186 +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 <digital_mpsk_snr_est_cc.h> -#include <gr_io_signature.h> -#include <cstdio> - -digital_mpsk_snr_est_cc_sptr -digital_make_mpsk_snr_est_cc(snr_est_type_t type, - int tag_nsamples, - double alpha) -{ - return gnuradio::get_initial_sptr(new digital_mpsk_snr_est_cc( - type, tag_nsamples, alpha)); -} - -digital_mpsk_snr_est_cc::digital_mpsk_snr_est_cc(snr_est_type_t type, - int tag_nsamples, - double alpha) - : gr_sync_block ("mpsk_snr_est_cc", - gr_make_io_signature(1, 1, sizeof(gr_complex)), - gr_make_io_signature(1, 1, sizeof(gr_complex))) -{ - d_snr_est = NULL; - - d_type = type; - d_nsamples = tag_nsamples; - d_count = 0; - set_alpha(alpha); - - set_type(type); - - // at least 1 estimator has to look back - set_history(2); - - std::stringstream str; - str << name() << unique_id(); - d_me = pmt::pmt_string_to_symbol(str.str()); - d_key = pmt::pmt_string_to_symbol("snr"); -} - -digital_mpsk_snr_est_cc::~digital_mpsk_snr_est_cc() -{ - if(d_snr_est) - delete d_snr_est; -} - -int -digital_mpsk_snr_est_cc::work(int noutput_items, - gr_vector_const_void_star &input_items, - gr_vector_void_star &output_items) -{ - // This is a pass-through block; copy input to output - memcpy(output_items[0], input_items[0], - noutput_items * sizeof(gr_complex)); - - const gr_complex *in = (const gr_complex*)input_items[0]; - - // Update, calculate, and issue an SNR tag every d_nsamples - int index = 0, x = 0; - int64_t nwritten = nitems_written(0); - while(index + (d_nsamples-d_count) <= noutput_items) { - x = d_nsamples - d_count; - nwritten += x; - - // Update the SNR estimate registers from the current input - d_snr_est->update(x, &in[index]); - - // Issue a tag with the SNR data - pmt::pmt_t pmt_snr = pmt::pmt_from_double(d_snr_est->snr()); - add_item_tag(0, // stream ID - nwritten, // tag's sample number - d_key, // snr key - pmt_snr, // SNR - d_me); // block src id - - index += x; - d_count = 0; - } - - // Keep track of remaining items and update estimators - x = noutput_items - index; - d_count += x; - d_snr_est->update(x, &in[index]); - - return noutput_items; -} - -double -digital_mpsk_snr_est_cc::snr() -{ - if(d_snr_est) - return d_snr_est->snr(); - else - throw std::runtime_error("digital_mpsk_snr_est_cc:: No SNR estimator defined.\n"); -} - -snr_est_type_t -digital_mpsk_snr_est_cc::type() const -{ - return d_type; -} - -int -digital_mpsk_snr_est_cc::tag_nsample() const -{ - return d_nsamples; -} - -double -digital_mpsk_snr_est_cc::alpha() const -{ - return d_alpha; -} - -void -digital_mpsk_snr_est_cc::set_type(snr_est_type_t t) -{ - d_type = t; - - if(d_snr_est) - delete d_snr_est; - - switch (d_type) { - case(SNR_EST_SIMPLE): - d_snr_est = new digital_impl_mpsk_snr_est_simple(d_alpha); - break; - case(SNR_EST_SKEW): - d_snr_est = new digital_impl_mpsk_snr_est_skew(d_alpha); - break; - case(SNR_EST_M2M4): - d_snr_est = new digital_impl_mpsk_snr_est_m2m4(d_alpha); - break; - case(SNR_EST_SVR): - d_snr_est = new digital_impl_mpsk_snr_est_svr(d_alpha); - break; - default: - throw std::invalid_argument("digital_mpsk_snr_est_cc: unknown type specified.\n"); - } -} - -void -digital_mpsk_snr_est_cc::set_tag_nsample(int n) -{ - if(n > 0) { - d_nsamples = n; - d_count = 0; // reset state - } - else - throw std::invalid_argument("digital_mpsk_snr_est_cc: tag_nsamples can't be <= 0\n"); -} - -void -digital_mpsk_snr_est_cc::set_alpha(double alpha) -{ - if((alpha >= 0) && (alpha <= 1.0)) { - d_alpha = alpha; - if(d_snr_est) - d_snr_est->set_alpha(d_alpha); - } - else - throw std::invalid_argument("digital_mpsk_snr_est_cc: alpha must be in [0,1]\n"); -} |