Abstract
AbstractThis chapter is based on recent research work in two fields: a) optical signal decay in wireless atmospheric communication links, and b) performance and quality of service (QoS) in such links that accounts for the destructive effects of fading phenomena on signal data streams transmitted through such channels. The total signal decay was formulated based on predictions of the main losses occurring in the atmospheric communication link, accounting for the effects of attenuation and absorption by gaseous structures and hydrometeors (rain, snow and clouds), and turbulence-induced fast fading of radio and optical signals. Signal data parameters, including capacity, spectral efficiency and bit-error-rate (BER), were analyzed for the prediction and increase of QoS, taking into account all features occurring in atmospheric communication links. An optimal algorithm for the prediction of the total signal decay was found, considering various meteorological conditions occurring in the real atmosphere at different heights and various frequencies of radiated signals. Lastly, a method was proposed to evaluate the data stream parameters: capacity, spectral efficiency and BER, accounting for effects of fast fading atmospheric turbulence that corrupt information data signals transmitted through such channels.KeywordsAtmosphereBERCapacityCloudsHydrometeorsK-parameter of fadingOptical wavesRainScintillation indexSpectral efficiencyTurbulence
Published Version
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