This chapter is an introduction to the near-Earth laser communication technology. By near-
Earth, we mean high-altitude platforms and Earth-orbiting satellites. Justification for high …

The evolving requirements of next-generation mobile communications networks can be met
by leveraging vertically deployed Unmanned Aerial Vehicle (UAV) platforms integrated with …

Optical wireless communication is an emerging wireless communication technology, which
has faster transmission speed, higher bandwidth, and lower power consumption compared …

All-optical amplify-and-forward (OAF) relaying technique can amplify and filter the
attenuated optical signal in optical domain, and thus is regarded as a simple way to extend …

Several operators plan to launch mega-constellations of several hundred or even thousands
of satellites over the next years to provide global, high-speed and secure backbone …

Sandstorms can severely affect the reliability of outdoor optical wireless communications
(OWC) by diminishing large regions' visibility. In this work, the effect of a real sandstorm on …

We proposed the statistical misalignment model and the power-efficient configuration of
transceivers for bi-directional multi-input and multi-output (MIMO) based vertical free space …

With the continuous development of science and technology, UAV technology has been
widely used in various fields. As an essential part, light and small UAV platforms have the …

A novel approximated misalignment model of an alignment error with multiple incident
beams in the position detection of the pointing, acquisition, and tracking (PAT) system is …

Optical beam steering and divergence control is a critical function in free-space optical
(FSO) communications. Variable focus liquid lenses (VFLLs) can be used for simultaneous …