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SLIPT in Joint Dimming Multi-LED OWC Systems with Rate Splitting Multiple Access

Javadi, S ; Sharif University of Technology | 2024

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  1. Type of Document: Article
  2. DOI: 10.1109/ICC51166.2024.10622982
  3. Publisher: 2024
  4. Abstract:
  5. Optical wireless communication (OWC) systems with multiple light-emitting diodes (LEDs) have recently been explored to support energy-limited devices via simultaneous lightwave information and power transfer (SLIPT). The energy consumption, however, becomes considerable by increasing the number of incorporated LEDs. This paper proposes a joint dimming (JD) scheme that lowers the consumed power of a SLIPT-enabled OWC system by controlling the number of active LEDs. We further enhance the data rate of this system by utilizing rate splitting multiple access (RSMA). More specifically, we formulate a data rate maximization problem to optimize the beamforming design, LED selection and RSMA rate adaptation that guarantees the power budget of the OWC transmitter, as well as the quality-of-service (QoS) and an energy harvesting level for users. We propose a dynamic resource allocation solution based on proximal policy optimization (PPO) reinforcement learning. In simulations, the optimal dimming level is determined to initiate a trade-off between the data rate and power consumption. It is also verified that RSMA significantly improves the data rate. © 2024 IEEE
  6. Keywords:
  7. Joint dimming (JD) ; Optical wireless communication (OWC) ; Proximal policy optimization (PPO) ; Rate splitting multiple access (RSMA) ; Simultaneous lightwave information and power transfer (SLIPT) ; Access control ; Dimming (lamps) ; Energy utilization ; Inductive power transmission ; Linear programming ; Network security ; Optical communication ; Reinforcement learning ; Resource allocation ; Information and power transfers ; Light wave ; Multiple access ; Policy optimization ; Budget control
  8. Source: IEEE International Conference on Communications ; 2024 , Pages 4359-4365 ; 15503607 (ISSN); 978-172819054-9 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/10622982