High capacity optical wireless systems

无线电频谱正变得高度拥挤，这限制了网络运营商推出新业务的能力。一个潜在的解决方案是使用光谱。红外波长的光无线通信有许多优点。这些优点包括丰富的非规范频谱、不受信号衰落的影响、物理层的安全性（因为光信号不能穿透不透明的墙壁）以及在相邻房间中重复使用相同波长的能力。然而，这些光学无线系统遭受许多限制，包括导致脉冲传播并降低可实现数据速率的多径传播；并且受到日光和人工光源的干扰。该项目将解决这些缺陷，并将评估高容量光纤无线网络和最佳网络架构和协议的潜力。

The radio frequency spectrum is becoming highly congested which limits the network operators' ability to introduce new services. A potential solution is to use the optical spectrum. Optical wireless communication at the infrared wavelengths offers a number of advantages. These include an abundant unregulated spectrum, freedom from signal fading, security at the physical layer as optical signals do not penetrate opaque walls and the ability therefore to re-use the same wavelengths in adjacent rooms. These optical wireless systems however suffer a number of limitations including multipath propagation which results in pulse spread and reduces the achievable data rate; and suffer from interference due to day light and artificial lighting sources. This project will address these impairments and will evaluate the potential of high capacity optical wireless networks and optimum network architectures and protocols.