@ARTICLE{wang2018generalized,
  author={T. {Wang} and S. {Liu} and F. {Yang} and J. {Wang} and J. {Song} and Z. {Han}},
  journal={IEEE Transactions on Broadcasting}, 
  title={Generalized Spatial Modulation-Based Multi-User and Signal Detection Scheme for Terrestrial Return Channel With NOMA}, 
  year={2018},
  volume={64},
  number={2},
  pages={211-219},
  doi={10.1109/TBC.2017.2755260}}