Relayed FSO communication with aperture averaging receivers and misalignment errors

• DOI: 10.1049/iet-com.2016.0253
• Publication Date: 2016-09-12T09:09:40Z
• Authors: Prabhat Kumar Sharma; Ankur Bansal; Parul Garg; Theodoros Tsiftsis; Ricardo Barrios
• Keywords: Aperture (computer memory)

In this study, the performance of decode‐and‐forward relay‐assisted free‐space‐optical (FSO) communication systems under atmospheric turbulence‐induced fading and misalignment errors is investigated. To mitigate adverse effects turbulence, aperture‐averaging receivers are considered both at relay destination sides. The modelled via exponentiated‐Weibull distribution, which has recently been proposed to characterise an FSO link in presence finite‐sized receiver aperture. expression for moment generating function (MGF) instantaneous signal‐to‐noise ratio derived. Furthermore, new closed‐form outage probability obtained. Moreover, average symbol error rate subcarrier intensity‐modulated M ‐ary phase‐shift keying obtained using MGF‐based approach. Finally, numerical examples discussed all derived analytical results corroborated by Monte Carlo simulations.