All-optical relay-assisted FSO systems

Mohd Nor, Norhanis Aida, Ghassemlooy, Zabih, Komanec, Matej, Bohata, Jan, Zvanovec, Stanislav, Bhatnagar, Manav R. and Khalighi, Mohammad-Ali (2019) All-optical relay-assisted FSO systems. In: Principles and Applications of Free Space Optical Communications. IET Telecommunications series (78). The Institution of Engineering and Technology, London, pp. 195-226. ISBN 9781785614156, 9781785614163

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Abstract

In this chapter, an all-optical FSO relay-assisted system is proposed to mitigate the destructive effects of the distance-dependent AT-induced fading. Relays are inserted directly in the link in order to reduce the AT-induced link loss, thus extending the link span and ensuring higher link availability as well as improving the overall system performance. Two all-optical relaying schemes are proposed and investigated, namely all-optical amplify-and-forward (AOAF) and all-optical regenerate-and-forward (AORF) FSO relay-assisted approaches. For the AOAF approach, the performance analysis of triple-hop AOAF FSO communications is done under the impact of nonhomogeneous atmospheric turbulence. The AORF relaying approach is then proposed to overcome the limitation imposed by AOAF system, where the signal and noise are accumulated at each relay, thus limiting the number of relay nodes that can be used.

Item Type:	Book Section
Uncontrolled Keywords:	atmospheric turbulence, free-space optical communication, fading, relay networks (telecommunication), amplify and forward communication, optical links, atmospheric light propagation
Subjects:	H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Elena Carlaw
Date Deposited:	15 Jul 2019 14:49
Last Modified:	19 Nov 2019 10:14
URI:	http://nrl.northumbria.ac.uk/id/eprint/40026

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