A new upper bound on the minimum distance of turbo codes

被引:17
|
作者
Perotti, A [1 ]
Benedetto, S [1 ]
机构
[1] Politecn Torino, CERCOM, I-10129 Turin, Italy
关键词
minimum distance; performance bounds; permutations; turbo codes;
D O I
10.1109/TIT.2004.838358
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper, a new upper bound on the minimum distance of turbo codes is derived. The new bound is obtained by construction of an undirected graph which reflects the characteristics of the constituent codes and the interleaver. The resulting expression shows that the minimum distance of a turbo code grows approximately with the base-3 logarithm of the information word length. The new bound is easy to compute, applies to rate k(o)/n(o) constituent encoders, and often improves over existing results.
引用
收藏
页码:2985 / 2997
页数:13
相关论文
共 50 条