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Turbo DFE Assisted Time-Frequency Packing for Probabilistically Shaped Terabit Superchannels
2021
IEEE Photonics Journal
We present a probabilistically shaped (PS) timefrequency-packing (TFP) wavelength-division multiplexing superchannel system employing higher order modulation (HoM) formats, with an objective to improve the spectral efficiency (SE). However, TFP systems suffer from inter-symbol interference (ISI) and/or inter-carrier interference (ICI). Additionally, the bandwidth limitations of the wavelength selective switches in the fiber link may cause severe ISI for the edge sub-channels (SCs) in a
doi:10.1109/jphot.2021.3123810
fatcat:ktegj63nizfdjlaowxieew4sva