Enhanced LDPC Based Differential Iteration Decoding Scheme for PDM 16-QAM Coherent Optical Communication Systems

An enhanced LDPC based differential iteration decoding scheme is applied in 400-Gb/s PDM 16-QAM coherent optical communication systems. The simulation results show that, the system performance can be greatly improved by using the proposed method.

[1]  M. Secondini,et al.  Novel optical modulation scheme for 16-QAM format with quadrant differential encoding , 2009, 2009 International Conference on Photonics in Switching.

[2]  Ruey-Yi Wei.  Differential Encoding for Quadrature-Amplitude Modulation , 2010, 2010 IEEE 71st Vehicular Technology Conference.