@INPROCEEDINGS {16319,
author={PMC Carvalho and R. Dinis and M. Silva},
doi={0},
booktitle={Progress in Electromagnetics Research Symp. - PIERS},
title={Physical Layer Security Scheme Based on Power E±cient Multi-antenna Transmitter},
year={2015},
month={July},
volume={1},
pages={1-9} 
}