@article{ofdmwithindexmodulationinorbitalangular,
  title = {OFDM with Index Modulation in Orbital Angular Momentum Multiplexed Free Space Optical Links},
  author = {El-Mehdi Amhoud and Marwa Chafii and Ahmad Nimr and Gerhard Fettweis},
  year = {2021},
  eprint = {2103.03573},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2103.03573v1},
}