The link distance can be traded off for better weather tolerance.
However, the shorter link distance in itself becomes a shortcoming. Mesh architecture
complements these limitations of optical wireless by allowing for the creation
of reliable networks using short-range FSO links.
?– Line-of-sight requirement Optical wireless is a line-of-sight (LOS) technology,
a shortcoming that limits the scope of its applications. The shortcoming is, however,
somewhat complemented by the mesh networking technology that allows for
connecting two points that are not in LOS of each other through an intermediate
point, though this solution is not practical for all applications.
?– Lack of industry standard The lack of a coherent industry standard is one of
the significant shortcomings of FSO solutions.
Typical Deployment Scenarios
In this section, we will concentrate on typical deployments of optical wireless solutions
providing Carrier Ethernet services. Typical deployment of all other applications are
usually very similar to the typical deployments providing carrier-grade Ethernet services
and are beyond the scope of this chapter.
Deployment of Carrier Ethernet Services
In general, there are two possible ways of deploying a wireless optical mesh network.
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