@ARTICLE {28401,
author={M. Silva and R. Dinis and J. Guerreiro},
doi={10.1155/2019/5051963},
journal={International Journal of Antennas and Propagation},
title={Implicit Pilots for an Efficient Channel Estimation in Simplified Massive MIMO Schemes with Precoding},
year={2019},
month={January},
volume={2019},
number={1},
pages={1-11},
ISSN={1687-5869}
}