Rate-1/2 component codes for nonbinary turbo codes

Author

Reid, Andrew C. ; Gulliver, T. Aaron ; Taylor, Desmond P.

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of Canterbury, Christchurch, New Zealand

Volume

53

Issue

9

fYear

2005

Firstpage

1417

Lastpage

1422

Abstract

The iterative decoding structure and component maximum a posteriori decoders used for decoding binary concatenated codes can be extended to the nonbinary domain. This paper considers turbo codes over nonbinary rings, specifically ternary, quaternary, penternary, hexernary, and octernary codes. The best rate-1/2 component codes are determined using a practical search algorithm. The performance of the resulting rate-1/3 turbo codes on an additive white Gaussian noise channel using q-ary phase-shift keying modulation is given.

Keywords

AWGN channels; binary codes; concatenated codes; iterative decoding; maximum likelihood decoding; modulation coding; phase shift keying; search problems; turbo codes; Q-ary phase-shift keying modulation; additive white Gaussian noise channel; binary concatenated codes; iterative decoding structure; maximum aposteriori decoder; rate-1/2 component code; ring code; search algorithm; turbo codes; AWGN; Additive white noise; Concatenated codes; Convolutional codes; Iterative decoding; Modular construction; Modulation coding; Phase modulation; Phase shift keying; Turbo codes; Nonbinary turbo codes; ring codes;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2005.855019

Filename

1510940