diff options
Diffstat (limited to 'gr-utils/octave/lp_to_bp.m')
| -rw-r--r-- | gr-utils/octave/lp_to_bp.m | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/gr-utils/octave/lp_to_bp.m b/gr-utils/octave/lp_to_bp.m new file mode 100644 index 0000000000..4e73f6cc73 --- /dev/null +++ b/gr-utils/octave/lp_to_bp.m @@ -0,0 +1,27 @@ +# +# 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. +# + +## transform low pass coefficients into bandpass coefficients + +function bp_taps = lp_to_bp (lp_taps, center_freq, sampling_freq) + arg = 2 * pi * center_freq / sampling_freq; + bp_taps = lp_taps .* exp (j*arg*(0:length(lp_taps)-1)'); +endfunction |