Outage-Constrained Energy Efficiency Maximization for RIS-Assisted WPCNs

In this letter, we investigate robust resource allocation for reconfigurable intelligent surface (RIS)-assisted wireless-powered communication networks, where the RIS assists energy transfer from a multi-antenna power station (PS) to multiple wireless-powered users (WPUs). WPUs communicate with an information receiver by an orthogonal frequency division multiple access mode. The total energy effic...