A Link Quality Indicator for Topology Control in MEMS-based FSO Networks

In traditional radio frequency networks, the quality of a link is typical characterized by metrics which are based on variations of the signal to noise ratio. In highly directional optical wireless networks, directly applying this approach to link quality indication does not fully characterize the nature of the channel impairment. In this paper, we attempt to develop a receiver-side link quality indication metric capable of determining non-ideal channel conditions using a cross correlation between measurements obtained from a training spot and a channel impaired spot formed on a receiver equipped with a MicroElectroMechanical Systems (MEMS) mirror array.