Free-Space Optical Communication Impaired by Angular Fluctuations

Shenjie Huang, Majid Safari

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, the impairments of FSO communication systems caused by angular fluctuations including beam misalignment and angle-of-arrival (AOA) fluctuations are modelled in the presence of both atmospheric turbulence and transceiver vibrations. In particular, assuming FSO receivers with a limited field-of-view (FOV), the fading caused by AOA fluctuations is studied. The outage probability expressions for both coherent and direct detections are derived in both shot-noise-limited and thermal- noise-limited regimes. For direct detection, the optimal receiver FOV that achieves the minimum outage probability is also calculated. Furthermore, the issue of imperfect phasefront tracking in practical coherent receivers is investigated.
Original languageEnglish
Pages (from-to)7475 - 7487
JournalIEEE Transactions on Wireless Communications
Volume16
Issue number11
Early online date8 Sep 2017
DOIs
Publication statusPublished - Nov 2017

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