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Performance Analysis of Cascaded Reconfigurable Intelligent Surface Networks
IEEE Wireless Communications Letters ( IF 6.3 ) Pub Date : 2022-06-20 , DOI: 10.1109/lwc.2022.3184635
Dimitrios Tyrovolas 1 , Sotiris A. Tegos 1 , Emmanouela C. Dimitriadou-Panidou 1 , Panagiotis D. Diamantoulakis 1 , Christos K. Liaskos 2 , George K. Karagiannidis 1
Affiliation  

Reconfigurable intelligent surfaces (RIS) have been presented as a solution to realize the concept of smart radio environments, wherein uninterrupted coverage and extremely high quality of service can be ensured. In this letter, assuming that multiple RIS are deployed in the propagation environment, the performance of a cascaded RIS network affected by imperfect phase estimation is evaluated. Specifically, we derive closed-form expressions for the outage probability, the ergodic capacity and the average symbol error probability that can be utilized to evaluate the coverage of the proposed network, as well as the average capacity and the data transmission accuracy. Finally, we validate the derived expressions through simulations and show that by choosing the number of the participating RIS correctly, a cascaded RIS network can outperform a single RIS-aided system and extend the network’s coverage efficiently.

中文翻译:

级联可重构智能地表网络性能分析

可重构智能表面 (RIS) 已作为实现智能无线电环境概念的解决方案提出,其中可以确保不间断的覆盖和极高的服务质量。在这封信中,假设在传播环境中部署了多个 RIS,评估了受不完美相位估计影响的级联 RIS 网络的性能。具体来说,我们推导出了中断概率、遍历容量和平均符号错误概率的封闭式表达式,可用于评估所提出网络的覆盖范围,以及平均容量和数据传输精度。最后,我们通过模拟验证了派生的表达式,并表明通过正确选择参与 RIS 的数量,
更新日期:2022-06-20
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