论文标题
可活动的可重新配置智能表面用于移动边缘计算
Active Reconfigurable Intelligent Surface for Mobile Edge Computing
论文作者
论文摘要
本文研究了一个可积极的可重构智能表面（RIS）辅助移动边缘计算（MEC）系统。与被动RIS相比，活动RIS配备了主动反射放大器，可以有效地规避“双路径损失”衰减。我们提出了一个联合计算和通信设计，以最大程度地减少最大计算潜伏期（MCL），但均受相移约束和边缘计算能力约束。具体而言，原始问题被解耦到四个子问题，然后将块坐标下降（BCD）方法和连续的凸近似（SCA）方法应用于交替优化子问题。仿真结果表明，通过相同的功率预算，主动RI所获得的绩效增长要比被动RIS大得多。
This paper investigates an active reconfigurable intelligent surface (RIS)-aided mobile edge computing (MEC) system. Compared with passive RIS, the active RIS is equipped with active reflective amplifier, which can effectively circumvent the "double path loss" attenuation. We propose a joint computing and communication design to minimize the maximum computational latency (MCL), subject to both the phase shift constraints and the edge computing capability constraints. Specifically, the original problem is decoupled into four subproblems, and then the block coordinate descent (BCD) method and the successive convex approximation (SCA) method are applied to alternately optimize the subproblems. The simulation results show that with the same power budget, the performance gain achieved by the active RIS is much larger than that by the passive RIS.
