Optical wireless communication (OWC) refers to transmission in unguided propagation
media through the use of optical carriers, ie, visible, infrared (IR), and ultraviolet (UV) bands …

This article presents an efficient error-control code (ECC) and modulation for an optical
communications channel. The coded modulation is designed to support NASA's Mars Laser …

Signal modulation has an important impact on the system performance in optical
communication. Two attractive modulation schemes are pulse position modulation (PPM) …

Error control coded M‐ary pulse position modulation (PPM) can be used over free space
optical links to mitigate the atmospheric attenuations and the turbulence induced fading. In …

For terrestrial free space optical (FSO) systems, we investigate the use of pulse position
modulation (PPM) which has the interesting property of being average-energy efficient. We …

It can be argued that optical communications had its origins in ancient times, where
modulated sunlight was often used to convey information over large dis-tances. For …

We present novel results for the uncoded and coded bit-error probability (BEP) of optically
pre-amplified pulse-position modulation (PPM) wireless systems. For uncoded systems, a …

The average power loss and the channel power fading are among the major challenges of
the free-space optical (FSO) communications through the turbulent atmosphere, which result …

This paper presents and compares two iterative coded modulation techniques for deep-
space optical communications using pulse-position modulation (PPM). The first code …

This paper presents and compares two iterative coded modulation techniques for deep-
space optical communications using pulse-position modulation (PPM). The first code …