SLIPT in Joint Dimming Multi-LED OWC Systems with Rate Splitting Multiple Access
<|reference_start|>SLIPT in Joint Dimming Multi-LED OWC Systems with Rate Splitting Multiple Access: 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.<|reference_end|>
@article{javadi2024slipt,
    title={SLIPT in Joint Dimming Multi-LED OWC Systems with Rate Splitting
  Multiple Access},
    author={Sepideh Javadi, Sajad Faramarzi, Farshad Zeinali, Hosein Zarini,
  Mohammad Robat Mili, Panagiotis D. Diamantoulakis, Eduard Jorswieck, and
  George K. Karagiannidis},
    journal={arXiv preprint arXiv:2402.16629},
    year={2024},
    archivePrefix={arXiv},
    eprint={2402.16629},
    primaryClass={cs.IT eess.SP math.IT}
}