Active RIS delivers higher sum-rates than passive RIS but is more sensitive to CSI errors at high error variances.
Enhancing v2x communication with active ris: A mixed action drl approach with perfect and imperfect csi
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On the Sensitivity of Active RIS Systems to CSI Errors: Joint Optimization and Performance Trade-off
Active RIS delivers higher sum-rates than passive RIS but is more sensitive to CSI errors at high error variances.