elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Evaluation of the Scintillation Loss for Optical Communication Systems with Direct Detection

Perlot, Nicolas (2006) Evaluation of the Scintillation Loss for Optical Communication Systems with Direct Detection. Optical Engineering, 46 (2), 025003-1-025003-7.

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
240kB

Abstract

In optical communications through the atmosphere, the evaluation of a link feasibility often requires the quantification of the scintillation penalty in terms of power loss. To find how much additional optical power is needed to reach the bit-error-rate (BER) requirements, the optical-power fluctuations must be characterized as well as the response of the receiver to those fluctuations. In the present analysis, the directdetected optical power is assumed to be either lognormal or gammagamma distributed. To account for the dynamics of the atmospheric channel, a distinction is made between short-term and long-term BERs. For a simple On-Off Keying (OOK) modulation, expressions of scintillation losses are given for different system requirements. Specifically, an upper bound is set to any of the three following quantities: the long-term BER, the probability of having a too-high short-term BER, or the mean time during which the short-term BER is too high. Results show that, without any fade mitigation, losses under moderate scintillation are considerable. Finally, a simple code-word approach shows how scintillation losses can be reduced by channel coding.

Document Type:Article
Title:Evaluation of the Scintillation Loss for Optical Communication Systems with Direct Detection
Authors:
AuthorsInstitution or Email of Authors
Perlot, NicolasUNSPECIFIED
Date:2006
Journal or Publication Title:Optical Engineering
Volume:46
Page Range:025003-1-025003-7
Editors:
EditorsEmail
SPIE-The International Society for Optical Engineering, UNSPECIFIED
Status:Published
Keywords:free-space optics, scintillation loss, IM/DD systems, short-term BER, long-term BER, channel coding, KNOCGOP
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W KN - Kommunikation/Navigation
DLR - Research area:Space
DLR - Program:W KN - Kommunikation/Navigation
DLR - Research theme (Project):W - Vorhaben Multimedia Satellitennetze (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Digital Networks
Deposited By: Dr. Nicolas Perlot
Deposited On:07 Sep 2007
Last Modified:12 Dec 2013 20:20

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.