A geometric approach for turbo decoding of reed-solomon codes in QAM modulation schemes

Author

Runge, Cristhof J Roosen ; Piqueira, Jose R. C.

Author_Institution

Dept. de Eng. de Telecomun. e Controle, Univ. de Sao Paulo, Sao Paulo

Volume

13

Issue

5

fYear

2009

fDate

5/1/2009 12:00:00 AM

Firstpage

333

Lastpage

335

Abstract

This work studies the turbo decoding of Reed-Solomon codes in QAM modulation schemes for additive white Gaussian noise channels (AWGN) by using a geometric approach. Considering the relations between the Galois field elements of the Reed-Solomon code and the symbols combined with their geometric dispositions in the QAM constellation, a turbo decoding algorithm, based on the work of Chase and Pyndiah, is developed. Simulation results show that the performance achieved is similar to the one obtained with the pragmatic approach with binary decomposition and analysis.

Keywords

AWGN channels; Galois fields; Reed-Solomon codes; channel coding; decoding; modulation coding; quadrature amplitude modulation; turbo codes; Galois field element; QAM modulation scheme; Reed-Solomon code; additive white Gaussian noise channel; binary decomposition; geometric approach; turbo decoding algorithm; AWGN; Additive white noise; Analytical models; Decoding; Galois fields; Gaussian noise; Modulation coding; Quadrature amplitude modulation; Reed-Solomon codes; Turbo codes; Algorithm, constellation, Galois field, matrix coding.;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2009.090100

Filename

4939343