This review paper discusses the complete evolution of free-space optical (FSO)
communication, also known as unguided optical communication (UOC) technologies, all the …

This survey article discusses the revolutions of wireless communication technologies right
from the prehistoric man's fire signals to today's space optical communications. A brief …

FSO is a line-of-sight technology that uses lasers to provide optical bandwidth connections
or FSO is an optical communication technique that propagate the light in free space means …

Free space optical (FSO) communication uses visible or infrared (IR) wavelengths to
broadcast high-speed data wirelessly through the atmospheric channel. The performance of …

This paper proposes a theoretical study to characterize the transmission of optical code
division multiple access (CDMA) systems deploying polarization shift keying (PolSK) over a …

Free space optical (FSO) communication has been considered as an alternative to radio
relay link line-ofsight (LOS) communication systems. The total attenuation is a combination …

Quantum key distribution (QKD) is a technique to establish a secret key between two parties
through a quantum channel. Several QKD protocols have been proposed and implemented …

We propose and demonstrate a generalized framework for performance limit evaluation and
comparison of multihop optical repeated and regenerated links. The model developed is …

Methods and systems relating to topics in space-polarization modulated communications.
The topics include: adaptive space-polarization modulated communications using channel …

Polarization shift keying (PolSK) is a digital modulation technique using the state of
polarization of an electromagnetic wave as the signalling quantity. PolSK comes from fibre …