Generalized Group Selection Strategies for Self-Sustainable RIS-Aided Communication
Dr. Priyadarshi Mukherjee, Department of Electrical Engineering and Computer Science, IISER Bhopal in collaboration with the research group of Prof. Sasthi C. Ghosh, ISI Kolkata, proposed novel order statistics-based generalized group selection strategies for a self-sustainable RIS-assisted communication set-up in a Rician fading scenario, which considers the aspect of correlated channels. These strategies are based on the performance metrics like the end-to-end signal-to-noise ratio and the energy harvested at the RIS group. Here, the authors considered multiple configurations of the RIS and provided performance bounds for the system parameters of concern. They demonstrated the importance of spatial correlation at the RIS (in terms of the inter-patch spacing) on the system performance by analytically characterizing both the data outage and the energy outage. Extensive Monte Carlo simulations validate the proposed framework. Moreover, by using tools from extreme value theory, they further investigated the asymptotic scenario of having a large number of groups available at the RIS for selection. Thereafter, it was observed that the outage performance, in this case, monotonically improves with increasing number of groups. 4. For more details, kindly visit https://ieeexplore.ieee.org/document/11447284
