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We present a statistical inference based multi-pilot aided CPE algorithm and analyze its performance via simulations. We experimentally verify LDPC coded back-to-back performance using 10 GBd DP-64QAM and DP-256QAM modulation, with transmitter and receiver linewidths of 100 kHz.
We propose a method of designing modulation schemes for increasing Euclidean distance while minimizing power fluctuations during transitions. Simulations show that this has 0.8 ∼ 1.0 dB higher loss budget than DP-BPSK and 4D Simplex modulation over 6,000 km links.
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