We study the performance of various binary and nonbinary modulation methods applied to
coherent laser communication through the turbulent atmosphere. We compare the spectral …

We study the performance of diversity combining techniques applied to synchronous laser
communication through the turbulent atmosphere. We assume that a single information …

Field conjugation arrays use adaptive combining techniques on multi-aperture receivers to
improve the performance of coherent laser communication links by mitigating the …

We report investigations on the mode diversity receiver applied in optical links from low-
earth-orbital satellites to a ground terminal. We numerically simulated temporal power …

With extremely high sensitivity, the coherent laser communications has a large potential to
be used in the long-range and high data-rate free space communication links. However, for …

Free-space coherent laser downlinks can potentially provide high data rates in space-to-
Earth communications, and are a key enabler for future optical information systems in space …

We study the performance of diversity combining techniques applied to synchronous laser
communication through the turbulent atmosphere. We consider the effects of log-normal …

Lasers offer tremendous advantages over RF communication systems in bandwidth and
security, due to their ultrahigh frequency and narrow spatial beamwidth. Unfortunately …

Long-haul atmospheric laser communication systems Page 1 § This work was sponsored by
the National Aeronautics and Space Administration under Air Force Contract #FA8721-05-C-0002 …

Atmospheric turbulence is caused by inhomogeneities in the temperature and pressure of
the atmosphere, resulting in random variations of the refractive index. A laser beam …