@article{energyefficiencyoptimizationfor,
  title = {Energy Efficiency Optimization for Backscatter Enhanced NOMA Cooperative V2X Communications under Imperfect CSI},
  author = {Wali Ullah Khan and Muhammad Ali Jamshed and Eva Lagunas and Symeon Chatzinotas and Xingwang Li and Bjorn Ottersten},
  year = {2022},
  eprint = {2202.01592},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2202.01592v2},
}