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Model-aided Geometrical Shaping of Dual-polarization 4D Formats in the Nonlinear Fiber Channel (2110.11670v1)
Published 22 Oct 2021 in eess.SP, cs.IT, and math.IT
Abstract: The geometry of dual-polarization four-dimensional constellations is optimized in the optical fiber channel using a recent nonlinear interference model. A 0.27 bit/4D rate gain and 13% reach increase are attained compared to polarization-multiplexed formats.