有助于RIS的合作时间划分多重访问
1Department of Electronic Engineering, Gachon University, Seongnam 13120, Republic of Korea.
Sensors (Basel, Switzerland)
|January 11, 2024
概括
本研究介绍了可重新配置的智能表面辅助合作时间划分多重访问 (RIS-TDMA),以增强无线通信. 拟议的RIS-TDMA方案通过智能地管理合作传输,确保所有用户的服务质量.
科学领域:
- 无线通信工程 无线通信工程
- 信号处理 信号处理
- 信息理论 信息理论
背景情况:
- 可重新配置的智能表面 (RIS) 通过优化被动元件相位移动,为无线系统提供增强的容量,覆盖范围和能源效率.
- 时间分割多个接入 (TDMA) 系统与RIS的合作传输是具有挑战性的,因为放大了干扰信号.
- 现有的研究缺乏关于将RIS与合作TDMA集成的全面研究.
研究的目的:
- 提出一个新的RIS辅助的合作TDMA计划,以应对干扰挑战.
- 为了最大限度地提高信号与干扰加噪声比 (SINR) 在合作RIS-TDMA系统的所有用户.
- 为所有用户保证服务质量 (QoS),同时尽量减少未实现的容量.
主要方法:
- 开发了一个RIS辅助的合作TDMA框架,利用RIS的机会性部署进行合作传输.
- 引入了非合作和合作时间段的调度策略.
- 为合作插槽提出了用户配对机制,并为配对用户设计了传输束成形矢量.
主要成果:
- 拟议方案有效地保证了所有用户所需的SINR,确保了QoS.
- 数字和模拟结果验证了RIS辅助合作TDMA的性能改进.
- 该计划成功地将剩余的所需容量降到最低,这表明有效地利用资源.
结论:
- 由RIS协助的合作TDMA方案为提高无线通信性能提供了可行的解决方案.
- 拟议的调度,用户配对和光束成形的方法在管理干扰和改善SINR方面是有效的.
- 这种方法证明了未来无线网络的巨大潜力,这些网络需要高容量和可靠的QoS.
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