Optimal Positioning of Hovering UAV Relays For Mitigation of Pointing Error in Free-Space Optical Communications

Muhammad Salman Bashir, Mohamed-Slim Alouini

Research output: Contribution to journalArticlepeer-review

Abstract

The relay positions or hop distances in a multi-hop relaying scheme is an important parameter that can be optimized in order to mitigate the angle-of-arrival variance or pointing error in a free-space optical (FSO) backhaul link. In this study, we have optimized the relay positions for amplify-and-forward and decode-and-forward relays in a multi-hop unmanned aerial vehicle-based relaying scheme for FSO. Particularly, we have shown that a significant performance improvement may be achieved by optimizing the outage probability as a function of the hop distance for amplify-and-forward relays when the relays are constrained by a finite power gain. Additionally, we have discovered that for a low signal-to-noise ratio channel, the optimal hop distance of a particular hop for decode-and-forward relays is inversely proportional to angle-of-arrival variance in that hop.
Original languageEnglish (US)
Pages (from-to)1-1
Number of pages1
JournalIEEE Transactions on Communications
DOIs
StatePublished - Sep 6 2022

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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