/usr/share/octave/packages/communications-1.1.1/egolaygen.m is in octave-communications-common 1.1.1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | ## Copyright (C) 2007 Muthiah Annamalai <muthiah.annamalai@uta.edu>
##
## This program 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 of the License, or (at your option) any later
## version.
##
## This program 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
## this program; if not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {} egolaygen ()
##
## Returns the Extended Golay code (24,12) generator matrix,
## which can correct upto 3 errors. The second argument is the partiy
## check matrix, for this code.
##
## @end deftypefn
## @seealso{egolaydec,egolayenc}
function [G,P]=egolaygen()
I=eye(12);
P=[1 0 0 0 1 1 1 0 1 1 0 1;
0 0 0 1 1 1 0 1 1 0 1 1;
0 0 1 1 1 0 1 1 0 1 0 1;
0 1 1 1 0 1 1 0 1 0 0 1;
1 1 1 0 1 1 0 1 0 0 0 1;
1 1 0 1 1 0 1 0 0 0 1 1;
1 0 1 1 0 1 0 0 0 1 1 1;
0 1 1 0 1 0 0 0 1 1 1 1;
1 1 0 1 0 0 0 1 1 1 0 1;
1 0 1 0 0 0 1 1 1 0 1 1;
0 1 0 0 0 1 1 1 0 1 1 1;
1 1 1 1 1 1 1 1 1 1 1 0;];
G=[P I]; %generator.
end
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