@ARTICLE {31815,
author={R.  Borralho and M.  Abdallah and A.  Quddus and P. Vieira and R. T. Tafazolli},
doi={10.1109/COMST.2021.3053464},
journal={IEEE Communications Surveys & Tutorials},
title={A Survey on Coverage Enhancement in Cellular Networks: Challenges and Solutions for Future Deployments},
year={2021},
month={January},
volume={23},
number={2},
pages={1302-1341},
ISSN={}
}