由可重新配置的智能表面中的活性元素分布所影响的可实现速率,用于无线通信
Dongming Li1, Sixu Li1, Guilu Wu2,3
1College of Information Technology, Jilin Agricultural University, Changchun, China.
PeerJ. Computer science
|June 22, 2023
概括
活性元素在可重新配置的智能表面 (RIS) 上的几何分布显著影响通信速率. 与RIS辅助无线系统中的随机或统一安排相比,八皇后分布可以提高7%的可实现率.
科学领域:
- 无线通信系统工程 无线通信系统工程
- 超材料和智能表面
- 信息理论和信号处理.
背景情况:
- 传统的可重新配置智能表面 (RISs) 方法用于增加通信速率,通常会随机部署主动元素.
- 在RIS辅助系统中的性能分析经常忽略了活性元素几何分布的影响.
- 优化主动元素放置对于最大限度地提高被动RIS的效率至关重要.
研究的目的:
- 研究不同活性元素几何分布对RIS辅助无线通信系统中可实现速率的影响.
- 为了比较RIS上的活性元素的随机,均和八皇后分布的性能.
- 确定最佳的活性元素分布,以提高通信速率.
主要方法:
- 对三种几何分布的分析:随机,均和八皇后,用于RIS上的活性元素.
- 根据预定义的代码集确定最佳可实现速率.
- 代码库生成与反射束形成相关的代码词受到活性元素几何学的影响.
主要成果:
- 活体元素在RIS上的不同几何分布显然会影响可实现的通信速率.
- 拟议的八皇后分布在测试的分布中产生了最高可实现的比率.
- 与传统方法相比,使用八皇后分布观察到可实现率有7%的改善.
结论:
- 活性元素的几何分布是RIS辅助通信系统性能的一个关键因素.
- 八皇后分布提供了一个卓越的策略,用于在RIS上部署活性元素,以最大限度地提高可实现的速率.
- 这种优化的放置策略提高了利用被动RIS的无线通信系统的整体效率.
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