@INPROCEEDINGS {40371,
author={B. M. Oliveira and F. P. Guiomar and M. C. R.  Medeiros and P. Monteiro},
doi={  10.1109/CSNDSP54353.2022.9907940},
booktitle={13th IEEE/IET International Symposium on Communication Systems, Networks and Digital Signal Processing  CSNDSP},
title={On the Enhancement of Unamplified Optical Coherent Systems},
year={2022},
month={July},
volume={},
pages={-} 
}