In this correspondence, we propose to use an intelligent reflective surface (IRS) installed on unmanned aerial vehicle (UAV), referred to as aerial IRS (AIRS), for vehicular networks, where simultaneous wireless information and power transfer (SWIPT) receivers to concurrently allow information decoding (ID) and energy harvesting (EH) are equipped at the battery-limited vehicles. For efficiently supporting the multiple moving vehicles, we adopt rate-splitting multiple access (RSMA) technique. With the aim of maximizing the sum rate of vehicles, we jointly optimize trajectory and phase shift design of AIRS, transmit power and rate allocation for RSMA along with power splitting ratio for SWIPT implementation. Via simulations, the superior performances of the proposed algorithm are validated compared to the conventional partial optimizations.

翻译：摘要：本文提出在车联网中采用安装于无人机（UAV）上的智能反射面（IRS），即空中智能反射面（AIRS），为配备有限电池的车辆安装同时无线信息和功率传输（SWIPT）接收机，以同时支持信息解码（ID）和能量采集（EH）。为高效支持多辆移动车辆，本文采用速率分割多址接入（RSMA）技术。以最大化车辆和速率为目标，我们联合优化了AIRS的轨迹与相位偏移设计、RSMA的发射功率与速率分配以及SWIPT实现的功率分割比。仿真结果表明，与传统部分优化方案相比，所提算法具有更优性能。