Optimization of BICM mutual information and bit error rate of 8-ary signal constellations using genetic algorithms

Author

Muller, Benjamin ; Zessack, Bjom ; Zolzer, Udo

Author_Institution

Dept. of Signal Process. & Commun., Helmut Schmidt Univ., Hamburg, Germany

fYear

2014

fDate

22-25 June 2014

Firstpage

214

Lastpage

218

Abstract

We propose the use of genetic algorithms for optimizing 8-ary signal constellations. The constellations are either optimized for a high bit interleaved coded modulation (BICM) mutual information or a low bit error rate (BER) in the additive white Gaussian noise channel (AWGN). We obtained a constellation that outperforms the 8-cross by 0.25 dB for a BICM mutual information of 2 bit/symbol. The optimized constellation for a low bit error rate requires a 0.4 dB lower SNR compared to the 8-cross for a BER of 10^-3.

Keywords

AWGN channels; error statistics; genetic algorithms; modulation coding; signal processing; 8-ary signal constellations; AWGN; BER; BICM mutual information optimization; additive white Gaussian noise channel; bit error rate; bit interleaved coded modulation; genetic algorithms; Bit error rate; Genetic algorithms; Satellite broadcasting; Satellites; Signal to noise ratio; 8-QAM; BICM mutual information; Genetic algorithm; Optimization;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications (SPAWC), 2014 IEEE 15th International Workshop on

Conference_Location

Toronto, ON

Type

conf

DOI

10.1109/SPAWC.2014.6941465

Filename

6941465