diff options
Diffstat (limited to 'gr-digital/lib/digital_ofdm_sync_sc_cfb.cc')
| -rw-r--r-- | gr-digital/lib/digital_ofdm_sync_sc_cfb.cc | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/gr-digital/lib/digital_ofdm_sync_sc_cfb.cc b/gr-digital/lib/digital_ofdm_sync_sc_cfb.cc deleted file mode 100644 index dbb8571c28..0000000000 --- a/gr-digital/lib/digital_ofdm_sync_sc_cfb.cc +++ /dev/null @@ -1,109 +0,0 @@ -/* -*- c++ -*- */ -/* Copyright 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. - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <gr_io_signature.h> -#include "digital_ofdm_sync_sc_cfb.h" - -#include <analog/plateau_detector_fb.h> -#include <blocks/complex_to_arg.h> -#include <blocks/complex_to_mag_squared.h> -#include <blocks/conjugate_cc.h> -#include <blocks/delay.h> -#include <blocks/divide_ff.h> -#include <blocks/multiply_cc.h> -#include <blocks/multiply_ff.h> -#include <blocks/sample_and_hold_ff.h> -#include <filter/fir_filter_ccf.h> -#include <filter/fir_filter_fff.h> - -// Define this to add a third output for debugging -//#define SYNC_ADD_DEBUG_OUTPUT - -digital_ofdm_sync_sc_cfb_sptr -digital_make_ofdm_sync_sc_cfb (int fft_len, int cp_len) -{ - return gnuradio::get_initial_sptr (new digital_ofdm_sync_sc_cfb(fft_len, cp_len)); -} - - -digital_ofdm_sync_sc_cfb::digital_ofdm_sync_sc_cfb (int fft_len, int cp_len) - : gr_hier_block2 ("ofdm_sync_sc_cfb", - gr_make_io_signature(1, 1, sizeof (gr_complex)), -#ifndef SYNC_ADD_DEBUG_OUTPUT - gr_make_io_signature2(2, 2, sizeof (float), sizeof (unsigned char))) -#else - gr_make_io_signature3(3, 3, sizeof (float), sizeof (unsigned char), sizeof (float))) -#endif -{ - std::vector<float> ma_taps(fft_len/2, 1.0); - gr::blocks::delay::sptr delay(gr::blocks::delay::make(sizeof(gr_complex), fft_len/2)); - gr::blocks::conjugate_cc::sptr delay_conjugate(gr::blocks::conjugate_cc::make()); - gr::blocks::multiply_cc::sptr delay_corr(gr::blocks::multiply_cc::make()); - gr::filter::fir_filter_ccf::sptr delay_ma(gr::filter::fir_filter_ccf::make(1, std::vector<float>(fft_len/2, 1.0))); - gr::blocks::complex_to_mag_squared::sptr delay_magsquare(gr::blocks::complex_to_mag_squared::make()); - gr::blocks::divide_ff::sptr delay_normalize(gr::blocks::divide_ff::make()); - - gr::blocks::complex_to_mag_squared::sptr normalizer_magsquare(gr::blocks::complex_to_mag_squared::make()); - gr::filter::fir_filter_fff::sptr normalizer_ma(gr::filter::fir_filter_fff::make(1, std::vector<float>(fft_len, 0.5))); - gr::blocks::multiply_ff::sptr normalizer_square(gr::blocks::multiply_ff::make()); - - gr::blocks::complex_to_arg::sptr peak_to_angle(gr::blocks::complex_to_arg::make()); - gr::blocks::sample_and_hold_ff::sptr sample_and_hold(gr::blocks::sample_and_hold_ff::make()); - - gr::analog::plateau_detector_fb::sptr plateau_detector(gr::analog::plateau_detector_fb::make(cp_len)); - - // Delay Path - connect(self(), 0, delay, 0); - connect(delay, 0, delay_conjugate, 0); - connect(delay_conjugate, 0, delay_corr, 1); - connect(self(), 0, delay_corr, 0); - connect(delay_corr, 0, delay_ma, 0); - connect(delay_ma, 0, delay_magsquare, 0); - connect(delay_magsquare, 0, delay_normalize, 0); - // Energy Path - connect(self(), 0, normalizer_magsquare, 0); - connect(normalizer_magsquare, 0, normalizer_ma, 0); - connect(normalizer_ma, 0, normalizer_square, 0); - connect(normalizer_ma, 0, normalizer_square, 1); - connect(normalizer_square, 0, delay_normalize, 1); - // Fine frequency estimate (output 0) - connect(delay_ma, 0, peak_to_angle, 0); - connect(peak_to_angle, 0, sample_and_hold, 0); - connect(sample_and_hold, 0, self(), 0); - // Peak detect (output 1) - connect(delay_normalize, 0, plateau_detector, 0); - connect(plateau_detector, 0, sample_and_hold, 1); - connect(plateau_detector, 0, self(), 1); -#ifdef SYNC_ADD_DEBUG_OUTPUT - // Debugging: timing metric (output 2) - connect(delay_normalize, 0, self(), 2); -#endif -} - - -digital_ofdm_sync_sc_cfb::~digital_ofdm_sync_sc_cfb() -{ -} - |