Differential signalling in free-space optical communication systems

Mansour Abadi, M., Ghassemlooy, Z., Bhatnagar, M. R., Zvanovec, S., Khalighi, M.-A. and Lavery, M. P.J. (2018) Differential signalling in free-space optical communication systems. Applied Sciences, 8(6), 872. (doi: 10.3390/app8060872)

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In this paper, we review the differential signalling techniques and investigate its implementation of in free-space optical (FSO) communication systems. The paper is an extended version of our previous works, where the effects of background noise, weak turbulence and pointing errors (PE) were investigated separately. Here, for the first time, we present a thorough description of the differential signalling scheme including for combined effects. At first, we present an extension of the analysis of differential signalling to the case of moderate to strong atmospheric turbulence. Next, we investigate a more general case where both channel turbulence and PE are taken into consideration. We provide closed-form expressions for the optimal detection threshold and the average bit-error-rate, and present a set of numerical results to illustrate the performance improvement offered by the proposed differential signalling under various turbulence and PE conditions.

Item Type:Articles
Additional Information:One of the authors, M.M.A. was supported by the PhD studentship from Northumbria University. The work was also supported by the The European project H2020 MSC ITN no. 764461 (VISION) and CTU project SGS17/182/OHK3/3T/13.
Glasgow Author(s) Enlighten ID:Lavery, Professor Martin and Mansour Abadi, Dr Mojtaba
Authors: Mansour Abadi, M., Ghassemlooy, Z., Bhatnagar, M. R., Zvanovec, S., Khalighi, M.-A., and Lavery, M. P.J.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Applied Sciences
ISSN (Online):2076-3417
Published Online:25 May 2018
Copyright Holders:Copyright © 2018 The Authors
First Published:First published in Applied Sciences 8(6): 872
Publisher Policy:Reproduced under a Creative Commons License

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