diff options
| author | Tom Rondeau <trondeau@vt.edu> | 2013-03-15 20:49:05 -0400 |
|---|---|---|
| committer | Tom Rondeau <trondeau@vt.edu> | 2013-03-15 20:49:05 -0400 |
| commit | 3d38e82e7d87dfc01132b199e33b53add8a706fa (patch) | |
| tree | af4545bcf3cea24dc30571601116a3a89381ad5d /gr-atsc/lib/atsci_root_raised_cosine.cc | |
| parent | 39ff6d4814c858f2dbaf3c8007940872c46d6c95 (diff) | |
atsc: adjustments to atsc to start to conform to v3.7 structure.
Not going to comply completely with the new structure; just wanted to get it so that it looked more consistent once installed.
Diffstat (limited to 'gr-atsc/lib/atsci_root_raised_cosine.cc')
| -rw-r--r-- | gr-atsc/lib/atsci_root_raised_cosine.cc | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/gr-atsc/lib/atsci_root_raised_cosine.cc b/gr-atsc/lib/atsci_root_raised_cosine.cc new file mode 100644 index 000000000..c5cedbd1f --- /dev/null +++ b/gr-atsc/lib/atsci_root_raised_cosine.cc @@ -0,0 +1,36 @@ +/* -*- 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 <atsc/consts.h> +#include <atsc/root_raised_cosine_impl.h> +#include <filter/firdes.h> + +vector<float> +atsc_root_raised_cosine::taps (double sampling_rate) +{ + static const double symbol_rate = ATSC_SYMBOL_RATE/2; // 1/2 as wide because we're designing lp filter + // static const int NTAPS = 93; // good number + // static const int NTAPS = 745; // better number + static const int NTAPS = 279; // better number + + return gr::filter::firdes::root_raised_cosine(1.0, sampling_rate, symbol_rate, .115, NTAPS); +} |