A New Block S-Random Interleaver for Shorter Length Frames for Turbo Codes
Author(s) -
Mohammad Salim,
Rajendra Yadav,
Kapil Narwal,
Aarti Sharma
Publication year - 2013
Publication title -
bulletin of electrical engineering and informatics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.251
H-Index - 12
ISSN - 2302-9285
DOI - 10.11591/eei.v2i4.196
Subject(s) - interleaving , turbo code , block (permutation group theory) , algorithm , computer science , turbo , block code , serial concatenated convolutional codes , bit error rate , error floor , concatenated error correction code , mathematics , decoding methods , engineering , combinatorics , automotive engineering , operating system
In this paper, we have proposed a new design of interleaver based on S-random and block interleaver. The characteristics of both block and S-random interleaver are used by this proposed interleaver. There is a large influence of free distance in turbo codes due to interleaving as it lowers the error floor. The free distance of turbo codes can be increased by designing interleaver with high spread. In this case, the overall spreading factor is increased significantly for smaller length frames also. The simulations results are compared with full S-random interleavers. The bit error rate performance of proposed interleaver for Turbo codes is much better than full s-random interleaver at the cost of small delay.
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