概括
这项研究通过使用波造型来增强室内可见光通信 (VLC). 该方法提高了非视线 (NLOS) 用户的信号强度,并改善了多个用户的数据速率,包括视线 (LOS) 链接.
科学领域:
- 光学通信是指光学通信.
- 无线网络无线网络.
- 信号处理 信号处理
背景情况:
- 可见光通信 (VLC) 提供高速,耐干扰的室内数据传输.
- 室内VLC系统通常涉及多个用户,具有视线 (LOS) 和非视线 (NLOS) 连接.
- 由于分散的反射,NLOS链接遭受了显著的信号衰减.
研究的目的:
- 提出和评估一个波浪前线塑造方法,以提高室内VLC的性能.
- 为了改善NLOS场景中的信号强度和多个LOS用户的数据速率.
- 为了应对复杂的室内VLC环境中的信号减弱挑战.
主要方法:
- 使用空间划分方案的波面成型.
- 为NLOS增强而逐步划分波面成形.
- 用于LOS用户光束方向的计算全息.
- 位功率加载离散多色调 (DMT) 调制.
主要成果:
- 在NLOS链接中实现了5.43dB的光强度增长.
- 为两个LOS用户启用了27°的开放角度范围.
- 对于 LOS 链接,已证明的数据速率为 3.082 Gbit/s 和 3.052 Gbit/s.
- 在NLOS连接中实现了2.235Gbit/s,改善了30.7%.
结论:
- 波面造型有效地提高室内VLC多个用户在LOS和NLOS条件下.
- 拟议的方法显著提高了数据速率和信号强度,达到FEC值.
- 这种技术为强大而高性能的室内无线光通信提供了有希望的解决方案.
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