STAR-RIS辅助SWIPT通信系统的联合优化
Joint Optimization of STAR-RIS Assisted SWIPT Communication Systems
AI总结：
本文提出STAR-RIS辅助SWIPT系统，通过交替优化相位、幅度、波束成形和功率分配比，提升数据速率与能量效率，仿真验证其总速率优于传统RIS方案。
摘要：
同时无线信息和功率传输（SWIPT）是一种有效的节能技术，但其效率受到环境因素的阻碍。可重构智能表面（RIS）的引入缓解了这一问题，尽管由于地理限制，它仍然面临重大约束。本文提出了一种采用同时透射和反射（STAR）-RIS来辅助SWIPT的方案。它可以克服这一限制，实现更高的自由度（DoF），并为地面两侧的用户提供更好的服务质量（QoS）。同时，我们考虑了一种基于功率分配的混合设备，该设备能够同时进行能量收集和信息解码。我们提出了一种高效的交替优化（AO）方法，以优化反射和透射的相位和幅度向量、波束成形以及最优功率分配比，实现数据速率和能量效率之间的最优平衡。最后，仿真结果表明，所提模型的总速率优于传统RIS和其他基准方案。
英文摘要：
Simultaneous wireless information and power transfer (SWIPT) is an effective energy-saving technology, but its efficiency is hindered by environmental factors. The introduction of reconfigurable intelligent surfaces (RIS) has alleviated this issue, although it still faces significant constraints due to geographical limitations. This paper proposes a scheme that employs a simultaneously transmitting and reflecting (STAR)-RIS to assist SWIPT. It can overcome this limitation, achieve higher degrees of freedom (DoF), and provide better quality of service (QoS) for users on both sides of the ground. Meanwhile, we have considered a hybrid device based on a power splitting, which is capable of both energy harvesting and information decoding. We have proposed an efficient alternating optimization (AO) method to optimize the phase and amplitude vectors for reflection and transmission, beamforming and the optimal power splitting ratio, achieving an optimal balance between data rate and energy efficiency. Finally, simulation results demonstrate that the sum rate of the proposed model is superior to traditional RIS and other benchmark schemes.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
