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Experimental investigation of a four-dimensional 256-ary lattice-based modulation format

: Eriksson, T.A.; Alreesh, S.; Schmidt-Langhorst, C.; Frey, F.; Berenguer, P.W.; Schubert, C.; Fischer, J.K.; Andrekson, P.A.; Karlsson, M.; Agrell, E.


Optical Society of America -OSA-, Washington/D.C.:
Optical Fiber Communication Conference 2015. Proceedings : 22 - 26 March 2015, Los Angeles, California, United States
Washington, DC: OSA, 2015 (OSA Technical digest series)
ISBN: 978-1-55752-937-4
Paper W4K.3
Optical Fiber Communication Conference (OFC) <2015, Los Angeles/Calif.>
Conference Paper
Fraunhofer HHI ()

A four-dimensional modulation format with 256 point from the D4-lattice (256-D4) is compared to PM-16QAM in experiments. 256-D4 is more sensitive at high OSNR but with a 21.3% overhead turbo product code, PM-16QAM outperforms 256-D4.