A turbo code interleaver design criterion based on the performance of iterative decoding

Author

Hokfelt, J. ; Edfors, O. ; Maseng, T.

Author_Institution

Dept. of Appl. Electron., Lund Univ., Sweden

Volume

5

Issue

2

fYear

2001

fDate

2/1/2001 12:00:00 AM

Firstpage

52

Lastpage

54

Abstract

The performance of a turbo code is dependent on two code properties: its distance spectrum and its suitability to be iteratively decoded. Both these properties are influenced by the choice of interleaver used in the turbo encoder. This paper presents an interleaver design criterion that focuses on the performance of iterative decoding, based on the correlation properties of the extrinsic inputs. Interleavers designed with the proposed criterion achieve very competitive performances, both in terms of convergence rates and error correcting capabilities.

Keywords

convergence of numerical methods; correlation methods; error correction codes; interleaved codes; iterative decoding; turbo codes; convergence rate; correlation properties; distance spectrum; error correcting capabilities; extrinsic inputs; interleaver design criterio; iterative decoding; turbo code; Additive white noise; Algorithm design and analysis; Convergence; Design methodology; Error correction; Gaussian noise; Interleaved codes; Iterative decoding; Maximum likelihood decoding; Turbo codes;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.905933

Filename

905933