FSO Detection using differential signaling in outdoor correlated-channels condition

Mansour Abadi, Mojtaba, Ghassemlooy, Zabih, Khalighi, Mohammad-Ali, Zvanovec, Stanislav and Bhatnagar, Manav (2015) FSO Detection using differential signaling in outdoor correlated-channels condition. Photonics Technology Letters, 28 (1). pp. 55-58. ISSN 1041-1135

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Official URL: http://dx.doi.org/10.1109/LPT.2015.2480011

Abstract

In this letter, we introduce a detection technique based on differential signaling scheme for outdoor free space optical communications. This method requires no channel state information (CSI) and does not suffer from the computational load compared with the conventional receivers, where adjusting dynamically the detection threshold level (either based on CSI knowledge, or by using pilots) leads to increased computational time and reduced link throughput. This letter shows that the performance of the proposed technique only depends on the correlation of propagating optical beams. Especially under highly correlated-channels condition the fluctuation of the detection threshold level in the receiver is significantly small. We also show experimentally that under weak turbulence regime the variance of detection threshold level reduces for the correlated channel.

Item Type: Article
Additional Information: (c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Nicola King
Date Deposited: 09 Dec 2015 14:21
Last Modified: 01 Nov 2017 20:01
URI: http://nrl.northumbria.ac.uk/id/eprint/24958

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