Iterative reliability-based decoding of turbo-like codes

Author

Isaka, Motohiko ; Fossorier, Marc ; Imai, Hideki

Author_Institution

Inst. of Ind. Sci., Univ. of Tokyo, Japan

Volume

3

fYear

2002

fDate

2002

Firstpage

1495

Abstract

In this paper, the use of a reliability-based decoding algorithm for some concatenated codes with an interleaver, known as turbo-like codes, is examined to address and overcome the suboptimality of iterative decoding. Simulation results show that the suboptimality of iterative decoding for moderate length codes can be at least partially compensated by this combined approach. Some insights about the potential additional coding gains achievable by the combined approach are investigated based on the characteristics of the constituent decoders, which highlights the nature of suboptimality in iterative decoding.

Keywords

concatenated codes; interleaved codes; iterative decoding; turbo codes; coding gains; concatenated codes; constituent decoders; interleaver; iterative decoding; moderate length codes; reliability-based decoding; simulation results; suboptimality; turbo-like codes; Block codes; Concatenated codes; Convolutional codes; Degradation; Error analysis; Iterative algorithms; Iterative decoding; Maximum likelihood decoding; Parity check codes; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2002. ICC 2002. IEEE International Conference on

Print_ISBN

0-7803-7400-2

Type

conf

DOI

10.1109/ICC.2002.997099

Filename

997099