Published February 14, 2023 | Version Author's version
Conference paper Open

Energy and Spectral Efficiency of Multi-Tier LiFi Networks

  • 1. The University of Edinburgh
  • 2. University of Strathclyde
  • 3. pureLiFi Ltd.


In this paper, multi-tier LiFi networks are studied in terms of energy efficiency (EE) and spectral efficiency (SE), which are crucial metrics for LiFi system design. We derived a closed-form expression of the user association probability for different tiers using stochastic geometry based Poisson Voronoi Tessellation (PVT) LiFi network. The performance metrics of the network, EE and SE, are analyzed in terms of different parameters such as transmit power and Lambertian index. Performance evaluations and numerical results show that multi-tier LiFi networks have an optimum transmit power in which EE is maximized. Besides, increasing the transmit power does not increase SE after passing a threshold point. The resulting trade-off between EE and SE is presented.



Files (456.0 kB)

Additional details


ENLIGHTEM – European Training Network in Low-energy Visible Light IoT Systems 814215
European Commission