SLIPT in Joint Dimming Multi-LED OWC Systems with Rate Splitting Multiple Access
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866917600134430720 |
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| author | Javadi, Sepideh Faramarzi, Sajad Zeinali, Farshad Zarini, Hosein Mili, Mohammad Robat Diamantoulakis, Panagiotis D. Jorswieck, Eduard Karagiannidis, George K. |
| author_facet | Javadi, Sepideh Faramarzi, Sajad Zeinali, Farshad Zarini, Hosein Mili, Mohammad Robat Diamantoulakis, Panagiotis D. Jorswieck, Eduard Karagiannidis, George K. |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_16629 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | SLIPT in Joint Dimming Multi-LED OWC Systems with Rate Splitting Multiple Access Javadi, Sepideh Faramarzi, Sajad Zeinali, Farshad Zarini, Hosein Mili, Mohammad Robat Diamantoulakis, Panagiotis D. Jorswieck, Eduard Karagiannidis, George K. Information Theory Signal Processing 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. |
| title | SLIPT in Joint Dimming Multi-LED OWC Systems with Rate Splitting Multiple Access |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2402.16629 |