diff options
Diffstat (limited to 'gr-atsc/lib/atsci_root_raised_cosine_bandpass.cc')
-rw-r--r-- | gr-atsc/lib/atsci_root_raised_cosine_bandpass.cc | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/gr-atsc/lib/atsci_root_raised_cosine_bandpass.cc b/gr-atsc/lib/atsci_root_raised_cosine_bandpass.cc deleted file mode 100644 index 84f9f22cab..0000000000 --- a/gr-atsc/lib/atsci_root_raised_cosine_bandpass.cc +++ /dev/null @@ -1,51 +0,0 @@ -/* -*- c++ -*- */ -/* - * Copyright 2002 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. - */ - -#include <gnuradio/atsc/root_raised_cosine_bandpass_impl.h> -#include <iostream> -#include <cmath> - -using std::vector; -using std::cerr; -using std::endl; - - -vector<float> -atsc_root_raised_cosine_bandpass::taps (double sampling_freq) -{ - - vector<float> t = atsc_root_raised_cosine::taps (sampling_freq); - - cerr << "atsc_root_raised_cosine_bandpass::taps -- " << t.size () << endl; - - // heterodyne the low pass coefficients up to the specified bandpass - // center frequency. Note that when we do this, the filter bandwidth - // is effectively twice the low pass (2.69 * 2 = 5.38) and hence - // matches the diagram in the ATSC spec. - - double arg = 2 * M_PI * _center_freq / sampling_freq; - for (unsigned int i = 0; i < t.size (); i++) - // the factor of 2 keeps the gain of the passband normalized to 1 - t[i] *= 2 * cos (arg * (double) i); - - return t; -} |