Title :
Spectrally efficient four-dimensional modulation
Author :
Karlsson, Magnus ; Agrell, Erik
Author_Institution :
Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Göteborg, Sweden
Abstract :
We quantify the performance of regular four-dimensional constellations with high spectral efficiency, and compare the sensitivity gain relative to rectangular QAM. Gains up to 1.51 and 1.97 dB over the corresponding QAM formats can be achieved.
Keywords :
optical communication; optical modulation; quadrature amplitude modulation; high spectral efficiency; rectangular QAM; regular four-dimensional constellations; sensitivity gain; spectrally efficient four-dimensional modulation; Constellation diagram; Gain; Lattices; Optical sensors; Quadrature amplitude modulation; Sensitivity;
Conference_Titel :
Optical Fiber Communication Conference and Exposition (OFC/NFOEC), 2012 and the National Fiber Optic Engineers Conference
Conference_Location :
Los Angeles, CA
Print_ISBN :
978-1-4673-0262-3
