In the present paper, the effects of aberration on the Bit-Error-Rate (BER) and reliability of Free-Space Optical (FSO) communication links are investigated. Based on aberrated divergent rectangular partially coherent flat-topped beam formula on the receiver plane and considering the atmosphere losses due to absorption, scattering and turbulence, numerical values for Power-In-Bucket (PIB), Sign...

introduction: this study was designed to evaluate the effects of treatment with flaxseed oil (fso) on renal ischemia-reperfusion (rir) injuries in rats. materials and methods: in this study, 32 wistar rats were randomly studied in four groups: co+ns (control group with normal saline administration), sh+ns (sham group with normal saline administration), rir+ns and rir+fso. fso (0.2 ml) was admin...

Free space optical (FSO) communication refers to the information transmission technology based on propagation of signals in space. FSO requires that transmitter and receiver directly see each other. High-altitude platforms (HAPs) have been proposed for carrying transceivers stratosphere. A multihop HAP network with links can relay traffic between ground nodes. In this study, we propose an end-t...

Today Free-Space Optical communication (FSO)has overcome the radio frequency communication. This paper gives an overview of the availability of an FSO system and its different weather conditions. It describes problems that the designer faces while implementing an FSO system and to overcome that problems .Performance analysis of a system for different weather conditions is carried out. Calculati...

This letter presents a unified analytical framework for the computation of the ergodic capacity and the outage probability of relay-assisted mixed FSO/RF transmission. In addition to accounting for different FSO detection techniques, the mathematical model offers a twofold unification of mixed FSO/RF systems by considering mixed Málaga-M/κ-μ shadowed fading, which includes as special cases near...

The forms of cytochrome P450 involved in the stereoselective S-oxidation of flosequinan [(+/-)-7-fluoro-1-methyl-3-methylsulfinyl-4-quinolone] were investigated in vitro using liver microsomes from rats and humans. Rat liver microsomes supplemented with NADPH catalyzed the four different S-oxidations, which were from flosequinan sulfide (FS; 7-fluoro-1-methyl-3-methylthio-4-quinolone) to R(+)- ...

Quantum Key Distribution (QKD) is a key exchange protocol which is implemented over free space optical links and optical fiber cable. When direct communication is not possible, QKD is performed over fiber cables, but the imperfections in detectors used at receiver side and also the material properties of fiber cables limit the long distance communication. Free space based quantum key distributi...

Free space optics (FSO) uses air as a transmission medium and is significantly affected by the various weather conditions such as haze, rain, fog, snow, wind, etc. In this paper, the behaviour of 16 × 2.5Gb/s FSO system under the effect of the most critical weather conditions using RZ format has been investigated. The operating channel frequencies range from 193.4THz to 189.7THz with the freque...