Energy and Spectral Efficiency of Multi-Tier LiFi Networks
Energy and Spectral Efficiency of Multi-Tier LiFi Networks
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DOI：
10.1109/wcnc55385.2023.10118728
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发表时间：
2023-03
期刊：
影响因子：
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通讯作者：
Ahmet Burak Ozyurt;R. Bian;H. Haas;W. Popoola
中科院分区：
文献类型：
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作者：
Ahmet Burak Ozyurt;R. Bian;H. Haas;W. Popoola
本文从能量效率（EE）和频谱效率（SE）两方面对多层LiFi网络进行了研究，这是LiFi系统设计的关键指标。我们使用基于随机几何的Poisson Voronoi Tessellation (PVT) LiFi网络推导了不同层的用户关联概率的封闭表达式。根据传输功率和朗伯指数等不同参数，分析了网络的性能指标EE和SE。性能评估和数值结果表明，多层LiFi网络具有最大EE的最优发射功率。此外，增加发射功率并不会在超过阈值点后增加SE。最后给出了EE和SE之间的权衡。
In this paper, multi-tier LiFi networks are studied in terms of energy efficiency (EE) and spectral efficiency (SE), which are crucial metrics for LiFi system design. We derived a closed-form expression of the user association probability for different tiers using stochastic geometry based Poisson Voronoi Tessellation (PVT) LiFi network. The performance metrics of the network, EE and SE, are analyzed in terms of different parameters such as transmit power and Lambertian index. Performance evaluations and numerical results show that multi-tier LiFi networks have an optimum transmit power in which EE is maximized. Besides, increasing the transmit power does not increase SE after passing a threshold point. The resulting trade-off between EE and SE is presented.