Title :
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
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;
Conference_Titel :
Signal Processing Advances in Wireless Communications (SPAWC), 2014 IEEE 15th International Workshop on
Conference_Location :
Toronto, ON
DOI :
10.1109/SPAWC.2014.6941465
