Low-Power Double RIS-Assisted Mobile LEO Satellite Communications
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866915647952257024 |
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| author | Sanila, Kunnathully Sadanandan Nilsson, Rickard Ibrahim, Emad Rajamohan, Neelakandan |
| author_facet | Sanila, Kunnathully Sadanandan Nilsson, Rickard Ibrahim, Emad Rajamohan, Neelakandan |
| contents | We propose a low-power mobile low earth orbit (LEO) satellite communication architecture, employing double reconfigurable intelligent surfaces (RIS) to enhance energy efficiency and signal performance. With a distance between RISs that satisfies the far-field requirement, this architecture positions one small RIS each in the near-field of the satellite's antenna and the user on the ground. Moreover, we develop a path loss model for the double-RIS communication link, considering the near-field and far-field effects. Further, with the help of dual-stage beamforming, the proposed system maximizes the signal power and minimizes power consumption. Simulation results show that the proposed architecture can reduce the power consumption with 40 dB in the uplink, with a small $0.25^2$ $\text{m}^2$ RIS near the user, to communicate in energy-constrained LEO satellite communication circumstances. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_02255 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Low-Power Double RIS-Assisted Mobile LEO Satellite Communications Sanila, Kunnathully Sadanandan Nilsson, Rickard Ibrahim, Emad Rajamohan, Neelakandan Information Theory Signal Processing We propose a low-power mobile low earth orbit (LEO) satellite communication architecture, employing double reconfigurable intelligent surfaces (RIS) to enhance energy efficiency and signal performance. With a distance between RISs that satisfies the far-field requirement, this architecture positions one small RIS each in the near-field of the satellite's antenna and the user on the ground. Moreover, we develop a path loss model for the double-RIS communication link, considering the near-field and far-field effects. Further, with the help of dual-stage beamforming, the proposed system maximizes the signal power and minimizes power consumption. Simulation results show that the proposed architecture can reduce the power consumption with 40 dB in the uplink, with a small $0.25^2$ $\text{m}^2$ RIS near the user, to communicate in energy-constrained LEO satellite communication circumstances. |
| title | Low-Power Double RIS-Assisted Mobile LEO Satellite Communications |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2512.02255 |