Interleaver design for multiple turbo codes

Author

Ehtiati, N. ; Soleymani, M.R. ; Sadjadpour, H.R.

Author_Institution

Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada

Volume

3

fYear

2003

fDate

4-7 May 2003

Firstpage

1605

Abstract

The choice of suitable interleaver for turbo codes can improve the performance considerably. For long block lengths, most random interleavers perform well, but for some applications it is preferable to have shorter lengths. For such applications deterministic interleavers perform much better. In this paper, a new method for designing interleavers for multiple turbo codes has been introduced. In multiple turbo codes we have three or more constituent codes and we need at least two interleavers. The key point here is that instead of optimizing both interleavers simultaneously for all possible input sequences, we optimize each interleaver for selected elements, in a way that the overall performance of the code is improved. In this paper we present a new interleaver design method for turbo codes with three constituent codes and compare the results with similar turbo codes with S-random interleaver.

Keywords

interleaved codes; optimisation; turbo codes; S-random interleaver; block length; deterministic interleaver; distance spectrum; multiple turbo code interleaver design; optimisation; Application software; Decoding; Degradation; Delay; Design methodology; Feedback; Interleaved codes; Polynomials; Tail; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2003. IEEE CCECE 2003. Canadian Conference on

ISSN

0840-7789

Print_ISBN

0-7803-7781-8

Type

conf

DOI

10.1109/CCECE.2003.1226214

Filename

1226214