Abstract
A low-complexity scheme is proposed to realize irregular QAM formats in amplifier-less coherent optical systems. The simulation results show 36QAM and 49QAM achieve 2.32 dB and 1.9 dB gains of power budget over 64QAM at net bit rates of 650 Gbit/s and 750 Gbit/s, respectively.
© 2022 The Author(s)
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