End-to-end Learning for GMI Optimized Geometric Constellation Shape
arXiv:1907.08535
Abstract
Autoencoder-based geometric shaping is proposed that includes optimizing bit mappings. Up to 0.2 bits/QAM symbol gain in GMI is achieved for a variety of data rates and in the presence of transceiver impairments. The gains can be harvested with standard binary FEC at no cost w.r.t. conventional BICM.
submitted to ECOC 2019