@article{performanceanalysisandoptimizationof3d,
  title = {Performance Analysis and Optimization of 3D Massive MIMO Multi-Pair Relaying with SWIPT},
  year = {2020},
  eprint = {2001.11803},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/2001.11803v2},
}