Title :
Joint coding rate and modulation format optimization for 8QAM constellations using BICM mutual information
Author :
Rios-Muller, Rafael ; Renaudier, Jeremie ; Schmalen, Laurent ; Charlet, Gabriel
Author_Institution :
Bell Labs. Alcatel-Lucent, Nozay, France
Abstract :
We compare the BICM mutual information of different 8QAM constellations and we show that Circular-8QAM is attractive for high coding rates while quadrature optimized Rect-8QAM provides best performance for low coding rates, both outperforming Star-8QAM.
Keywords :
optimisation; quadrature amplitude modulation; BICM mutual information; QAM constellations; high coding rates; joint coding rate; modulation format optimization; Adaptive optics; Decision support systems; Mutual information; Nonlinear optics; Optical fiber networks; Optimization;
Conference_Titel :
Optical Fiber Communications Conference and Exhibition (OFC), 2015
