Stern, S.S.SternBarakatain, M.M.BarakatainFrey, F.F.FreyPfeiffer, J.J.PfeifferFischer, J.K.J.K.FischerFischer, R.F.H.R.F.H.Fischer2022-03-152022-03-152020https://publica.fraunhofer.de/handle/publica/41201910.1109/ECOC48923.2020.9333330A concatenated coded-modulation scheme for 4D constellations is proposed that consists of an inner complexity-optimized non-binary LDPC code and an outer zipper code. The related packing, shaping, and coding gains reduce the required SNR by 1 dB over conventional BICM with DP-16QAM.en621Coded Modulation for Four-Dimensional Signal Constellations with Concatenated Non-Binary Forward Error Correctionconference paper