Power Allocation and RIS Elements Optimisation for Reconfigurable Intelligent Surfaces assisted RSMA
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arXiv
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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866913956264673280 |
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| author | Qayyum, Abdullah Nekovee, Maziar |
| author_facet | Qayyum, Abdullah Nekovee, Maziar |
| contents | This paper proposes power allocation and the number of reconfigurable intelligent surfaces (RIS) elements optimisation in a RIS-assisted rate splitting multiple access (RSMA) system. The optimised RIS-RSMA (ORIS-RSMA) method determines the optimal number of RIS elements and the power allocation factors for both common and private parts of a message. Additionally, it maximises the sum rate while ensuring that a target common rate is satisfied. The performance of the proposed ORIS-RSMA is compared to that of the conventional RIS-RSMA and RSMA. Simulation results show that ORIS-RSMA achieves a higher sum rate. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_17419 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Power Allocation and RIS Elements Optimisation for Reconfigurable Intelligent Surfaces assisted RSMA Qayyum, Abdullah Nekovee, Maziar Signal Processing This paper proposes power allocation and the number of reconfigurable intelligent surfaces (RIS) elements optimisation in a RIS-assisted rate splitting multiple access (RSMA) system. The optimised RIS-RSMA (ORIS-RSMA) method determines the optimal number of RIS elements and the power allocation factors for both common and private parts of a message. Additionally, it maximises the sum rate while ensuring that a target common rate is satisfied. The performance of the proposed ORIS-RSMA is compared to that of the conventional RIS-RSMA and RSMA. Simulation results show that ORIS-RSMA achieves a higher sum rate. |
| title | Power Allocation and RIS Elements Optimisation for Reconfigurable Intelligent Surfaces assisted RSMA |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2507.17419 |