… reflection coefficient, leads to compensation of the power-loss … spatialcorrelation depends
on the configuration of the RIS … Initially, we analyze the effect of the number of RIS metaatoms …

… Analysis shows that the communication performance can be enhanced by rising the number
and the size of RIS … of the RIS’s elements, the spatial correlation properties of the RIS …

… Motivated by this reason, as the first work, we study the RIS for two–way communications
in view of quantifying the performance limits, which is the novelty of this paper. …

… BS, the RIS, and the user. Our analysis takes into account the spatial correlation of the RIS
… proposed a phase optimization technique to compensate for the phase estimation error. Our …

… array performance, and some compensation techniques were proposed in order to reduce …
analyze the impact of spatial correlation when the RIS array is used only to transmit user data, …

… -space path loss of RIS-assisted wireless communications and … virtual transmitter, an
appropriate phase compensation needs … developed analytical free-space path loss models for RIS-…

… In this respect, the compensation algorithms at the receiver … 1, we consider the point-to-point
downlink transmissions for RIS-… cases, ie, spatial correlation in RIS channels and non-linear …

… considers the performance analysis of such scenarios where a novel analytical framework is
… The obtained results show that a strong direct link may limit the gain obtained using the RIS. …

… , and its negative impacts are compensated for by relying on … of an RIS communication system
was originally analyzed in [21… the prior knowledge of the spatial correlation. In contrast, the …

… practical communication scenarios. This paper investigates the performance of an RIS-assisted
spatial … Although some level of spatial correlation may be expected among reflectors, the …