Using differential signalling to mitigate pointing errors effect in FSO communication link

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F16%3A00302899" target="_blank" >RIV/68407700:21230/16:00302899 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Using differential signalling to mitigate pointing errors effect in FSO communication link
Original language description
In this paper, we investigate a differential signalling (DS) scheme to mitigate pointing errors effect in intensity-modulation/direct-detection (IM/DD) free space optical (FSO) communication systems with the non-return-to-zero on-off keying (NRZ-OOK) modulation format. The most common approach to detect a digital signal is based on comparing the received signal with an optimal threshold level. Normally, this optimal threshold level is set at the mean value of the signal in a clear channel. However, this detection threshold method is inefficient in a channel with fading effects. DS has been reported to mitigate the fluctuation of optimal detection threshold in NRZ-OOK IM/DD FSO communication systems only to combat atmospheric fading effects (e.g., fog and turbulence) and to reduce the background noise of the received signal. In this paper, we adopt the DS scheme to mitigate the optimal detection threshold level fluctuations induced by pointing errors. We also discuss the conditions in which DS cancels out the fluctuation of threshold level. The proposed technique is supported by carrying out experimental investigation of the FSO link with pointing errors. Measured results confirm that the effect of PE on the received signal was highly correlated (i.e.,
Czech name
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Czech description
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Project
<a href="/en/project/LD12058" target="_blank" >LD12058: Research of Ambient Influences on Novel Broadband Optical Wireless Systems (RAINBOWS)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
IEEE International Conference on Communications - Proceeding
ISBN
978-1-5090-0448-5
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
145-150
Publisher name
IEEE
Place of publication
Piscataway, NJ
Event location
Kuala Lumpur
Event date
May 23, 2016
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000386326800026

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