Inter-Dimensional Interference-Tolerant 4-D Set-Partitioning Qam-Mdpsk Optical Access Network Transmission

Interdimensional Interference Equalizing Using Recurrent Neural Network for Multi-Dimensional Optical Transmission

“…Therefore, several studies have been recently conducted on multi-dimensional transmission techniques by adding modulation resources to achieve high spectral efficiency and to eliminate these factors [9][10][11][12]. We previously reported a single wavelength-based multi-dimensional optical transmission with a quadrature amplitude modulation-polarized intensity rotational frequency shift keying-differential phase shift keying (QAM-PIRFSK-DPSK) modulation technique, which is a novel multidimensional optical modulation technique [13][14][15][16][17][18]. QAM-PIRFSK-DPSK modulation is more robust to changes in the state of polarization (SOP), especially the rotation SOP (RSOP), than polarization shift keying (PolSK)-based multi-dimensional optical modulation.…”