diff options
Diffstat (limited to 'viterbi_generator/utils/lower_utils/lower_utils/generate_previous.m')
| -rw-r--r-- | viterbi_generator/utils/lower_utils/lower_utils/generate_previous.m | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/viterbi_generator/utils/lower_utils/lower_utils/generate_previous.m b/viterbi_generator/utils/lower_utils/lower_utils/generate_previous.m new file mode 100644 index 0000000..942c4dc --- /dev/null +++ b/viterbi_generator/utils/lower_utils/lower_utils/generate_previous.m @@ -0,0 +1,35 @@ +function [ PREVIOUS ] = generate_previous(Lh) + + ########################################################################### + # Copyright (C) 2008 by Piotr Krysik # + # pkrysik@stud.elka.pw.edu.pl # + # # + # 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, write to the # + # Free Software Foundation, Inc., # + # 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. # + ########################################################################### + +SYMBOLS_NUM = 2**(Lh+1); +n=1; +for i=1:4:SYMBOLS_NUM, + PREVIOUS(i,1) = n+1; + PREVIOUS(i,2) = n+SYMBOLS_NUM/2+1; + PREVIOUS(i+1,1) = n; + PREVIOUS(i+1,2) = n+SYMBOLS_NUM/2; + PREVIOUS(i+2,1) = n+1; + PREVIOUS(i+2,2) = n+SYMBOLS_NUM/2+1; + PREVIOUS(i+3,1) = n; + PREVIOUS(i+3,2) = n+SYMBOLS_NUM/2; + n=n+2; +end |