DP-16QAM based coded modulation transmission in C+L band system at transoceanic distance

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.