Experimental Analysis Of 8-Qam Constellations For Adaptive Optical Ofdm Systems

Josep Maria Fàbrega, Javier Vilchez, Michela Svaluto Moreolo & Laia Nadal
In this letter, we numerically and experimentally evaluate the influence of adopting different 8-QAM constellations. The performance of flexible/adaptive direct detection optical orthogonal frequency division multiplexing transmission systems has been evaluated in the back-to-back configuration. Metro/regional network scenario is also considered using the four-node photonic mesh network of the ADRENALINE testbed. In general, different optical paths of the network ranging from 50 to 185 km are analyzed to asses the optimal 8-QAM format, which maximizes...
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