Performance Analysis of RIS-Assisted Spatial Modulation over Beckmann Fading Channels

Abstract

In this study, error performance of the reconfigurable intelligent surface (RIS)-assisted spatial modulation (SM) schemes is analyzed over Beckmann fading channels and compared to the reference schemes. Contrary to some existed works in literature, a blind scheme, which does not need the perfect channel state information and the knowledge of the activated antenna index at the RIS in order to be able to adjust the phases, is discussed since it is thought to be realized practically more easily. Detection of the transmitted signals is made by using a maximum likelihood (ML) detector at the receiver. The results obtained by extensive computer simulations reveal the various effects of the channel characteristics on the RIS-assisted SM system performance. © 2022 IEEE.