Wireless powered communication (WPC) combines information and energy transmission for energy-constrained nodes. Reconfigurable intelligent surfaces (RISs) are capable of controlling radio signals in a dynamic and goal-oriented manner. This paper investigates the combination of RIS and WPC to enhance the performance of an energy-constrained user. Using an RIS, a base station, and a wireless user transmit energy and information signals, respectively. We derive closed-form expressions for outage probability and secrecy rate to analyze the performance of the proposed framework. Based on the theoretical analysis and simulation results, valuable insights are revealed and parameter selection is demonstrated.

翻译：无线供能通信（WPC）将信息与能量传输相结合，适用于能量受限节点。可重构智能表面（RIS）能够以动态且目标导向的方式控制无线电信号。本文研究了RIS与WPC的融合，以提升能量受限用户的性能。通过使用RIS，基站和无线用户分别传输能量信号和信息信号。我们推导了中断概率和保密速率的闭式表达式，以分析所提框架的性能。基于理论分析和仿真结果，揭示了有价值的见解并展示了参数选择方法。