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| author | anastas | 2006-08-11 07:03:03 +0000 |
|---|---|---|
| committer | anastas | 2006-08-11 07:03:03 +0000 |
| commit | ebd3845a6aac08b8b7058963e1d72c93d652f2f3 (patch) | |
| tree | 7fa125ba4e26f558b5ce496a0ed986f97acaa7b2 /gr-trellis/src/lib/interleaver.cc | |
| parent | 30f2121800afe283879a3369a7462d699a77af50 (diff) | |
| download | gnuradio-ebd3845a6aac08b8b7058963e1d72c93d652f2f3.tar.gz gnuradio-ebd3845a6aac08b8b7058963e1d72c93d652f2f3.tar.bz2 gnuradio-ebd3845a6aac08b8b7058963e1d72c93d652f2f3.zip | |
1) Minor correction in Viterbi. 2) Checked in interleaver structure
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3232 221aa14e-8319-0410-a670-987f0aec2ac5
Diffstat (limited to 'gr-trellis/src/lib/interleaver.cc')
| -rw-r--r-- | gr-trellis/src/lib/interleaver.cc | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/gr-trellis/src/lib/interleaver.cc b/gr-trellis/src/lib/interleaver.cc new file mode 100644 index 000000000..12144bdc0 --- /dev/null +++ b/gr-trellis/src/lib/interleaver.cc @@ -0,0 +1,80 @@ +/* -*- 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 2, 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <cstdio>
+#include <stdexcept>
+#include <cmath>
+#include "interleaver.h"
+
+interleaver::interleaver()
+{
+ d_K=0;
+ d_INTER.resize(0);
+ d_DEINTER.resize(0);
+}
+
+interleaver::interleaver(const interleaver &INTERLEAVER)
+{
+ d_K=INTERLEAVER.K();
+ d_INTER=INTERLEAVER.INTER();
+ d_DEINTER=INTERLEAVER.DEINTER();
+}
+
+interleaver::interleaver(const int K, const std::vector<int> &INTER)
+{
+ d_K=K;
+ d_INTER=INTER;
+ d_DEINTER.resize(d_K);
+
+ // generate DEINTER table
+ for(int i=0;i<d_K;i++) {
+ d_DEINTER[d_INTER[i]]=i;
+ }
+}
+
+//######################################################################
+//# Read an INTERLEAVER specification from a file.
+//# Format (hopefully will become more flexible in the future...):
+//# K
+//# blank line
+//# list of space separated K integers from 0 to K-1 in appropriate order
+//# optional comments
+//######################################################################
+interleaver::interleaver(const char *name)
+{
+ FILE *interleaverfile;
+
+ if((interleaverfile=fopen(name,"r"))==NULL)
+ throw std::runtime_error ("file open error in interleaver()");
+ //printf("file open error in interleaver()\n");
+
+ fscanf(interleaverfile,"%d\n",&d_K);
+ d_INTER.resize(d_K);
+ d_DEINTER.resize(d_K);
+
+ for(int i=0;i<d_K;i++) fscanf(interleaverfile,"%d",&(d_INTER[i]));
+
+ // generate DEINTER table
+ for(int i=0;i<d_K;i++) {
+ d_DEINTER[d_INTER[i]]=i;
+ }
+}
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