论文标题
关于基于激光的光学无线网络的能源效率
On the energy efficiency of Laser-based Optical Wireless Networks
论文作者
论文摘要
光学无线通信（OWC）是蜂窝网络下一代（6G）的强大候选人。在本文中，使用垂直腔表面发射激光器（VCSELS）作为为多个用户服务的发射机，将基于激光的光学无线网络部署在室内环境中。具体而言，使用了在850nm波长下运行的市售低成本VCSEL。考虑到每个VCSEL的限制覆盖面积，一系列VCSEL旨在通过考虑眼睛安全法规，通过狭窄的光束将数据传输到多个用户。为了管理多用户干扰（MUI），实现零强迫（ZF）以最大化网络的多路复用增益。在不同的激光束腰部研究网络的能效，以找到有效的激光束大小，从而导致吞吐量增强。结果表明，能量效率随激光束腰部增加。此外，使用放置在VCSES前面的微镜头会导致能源效率显着提高。
Optical wireless Communication (OWC) is a strong candidate in the next generation (6G) of cellular networks. In this paper, a laser-based optical wireless network is deployed in an indoor environment using Vertical Cavity Surface Emitting Lasers (VCSELS) as transmitters serving multiple users. Specifically, a commercially available low-cost VCSEL operating at 850nm wavelength is used. Considering the confined coverage area of each VCSEL, an array of VCSELs is designed to transmit data to multiple users through narrow beams taking into account eye safety regulations. To manage multi-user interference (MUI), Zero Forcing (ZF) is implemented to maximize the multiplexing gain of the network. The energy efficiency of the network is studied under different laser beam waists to find the effective laser beam size that results in throughput enhancement. The results show that the energy efficiency increases with the laser beam waist. Moreover, using micro lenses placed in front of the VCSELs leads to significant increase in the energy efficiency.
