Channel Characterization of UAV-RIS-aided Systems with Adaptive Phase-shift Configuration
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866914659645259776 |
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| author | Nguyen, Thanh Luan Kaddoum, Georges Do, Tri Nhu Haas, Zygmunt J. |
| author_facet | Nguyen, Thanh Luan Kaddoum, Georges Do, Tri Nhu Haas, Zygmunt J. |
| contents | This letter considers a UAV aiding communication between a ground transmitter and a ground receiver in the presence of co-channel interference. A discrete-time Markov process is adopted to model the complex nature of the Air-to-Ground (A2G) channel, including the occurrence of Line-of-Sight, Non-Line-of-Sight, and blockage events. Moreover, an adaptive phase-shift-enabled Reconfigurable Intelligent Surface (RIS) is deployed to combat A2G blockage events. Novel frameworks based on the shadowed Rician distribution are proposed to derive closed-form expressions for Ground-to-Air/A2G SINR' distributions. Numerical results show that RISs with large numbers of elements, e.g., 256 RIS elements, improve end-to-end Outage Probability (OP) and reduce blockages. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_17180 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Channel Characterization of UAV-RIS-aided Systems with Adaptive Phase-shift Configuration Nguyen, Thanh Luan Kaddoum, Georges Do, Tri Nhu Haas, Zygmunt J. Signal Processing This letter considers a UAV aiding communication between a ground transmitter and a ground receiver in the presence of co-channel interference. A discrete-time Markov process is adopted to model the complex nature of the Air-to-Ground (A2G) channel, including the occurrence of Line-of-Sight, Non-Line-of-Sight, and blockage events. Moreover, an adaptive phase-shift-enabled Reconfigurable Intelligent Surface (RIS) is deployed to combat A2G blockage events. Novel frameworks based on the shadowed Rician distribution are proposed to derive closed-form expressions for Ground-to-Air/A2G SINR' distributions. Numerical results show that RISs with large numbers of elements, e.g., 256 RIS elements, improve end-to-end Outage Probability (OP) and reduce blockages. |
| title | Channel Characterization of UAV-RIS-aided Systems with Adaptive Phase-shift Configuration |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2401.17180 |