We present a low-complexity joint demapper-decoder scheme for coherent optical receivers with DQPSK modulation. The new technique reduces to 0.7dB the gap between QPSK and DQPSK in 100Gb/s coherent optical systems.
@article{arxiv.1206.4914,
title = {Joint Demapping and Decoding for DQPSK Optical Coherent Receivers},
author = {Mario A. Castrillon and Damian A. Morero and Mario R. Hueda},
journal= {arXiv preprint arXiv:1206.4914},
year = {2012}
}