DP-16QAM Based Coded Modulation Transmission in C+L Band System at Transoceanic Distance

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Abstract
We transmit CM DP-16QAM signals at 4.88 b/s/Hz SE in C+L band EDFAs. We demonstrate nonlinearity noise mitigation by MAP-LMS equalizer. We show 2 dB error correction margin improvement over DP-8QAM after 6,673 km transmission.