Experimental Verification of Rate Flexibility and Probabilistic Shaping by 4D Signaling
Fabian Steiner, Francesco Da Ros, Metodi P. Yankov, Georg Böcherer, Patrick Schulte, Søren O. Forchhammer, Gerhard G. Kramer · Optical Fiber Communication Conference · 2018
The rate flexibility and probabilistic shaping gain of $4$-dimensional signaling is experimentally tested for short-reach, unrepeated transmission. A rate granularity of 0.5 bits/QAM symbol is achieved with a distribution matcher based on a simple look-up table.