Abstract
AbstractReconfigurable intelligent surfaces (RISs) are recommended to be used in beyond 5G wireless communication systems to control the propagation environment so as to achieve higher data rate, spectrum efficiency, and increased throughput. In RIS-aided wireless communication, the interaction of radio waves on the surface of RIS plane can be controlled by tuning the impedance over the surface which results in the changes of amplitude and phase shift associated with each element. In this work, an attempt is made to estimate the base station (BS)-RIS-user cascaded channel coefficients based on the \(4N\) received signals at the user end using OFDM system model. In this paper, signal processing cup (SP CUP 2021) dataset1 is used to configure the surface in MATLAB to identify the configuration that achieves maximum data rate.KeywordsReconfigurable intelligent surfacesOrthogonal frequency division multiplexingPilot signalMetamaterialsCascaded channel matrixConfiguration selection
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