Free-Space Optical Communication Systems in Turbulent Channels: Wireless Optical Communications - Couverture souple

R. Abaza, Mohammed; Azzam, Nazmi; Aly, Moustafa

 
9783659103582: Free-Space Optical Communication Systems in Turbulent Channels: Wireless Optical Communications
Couverture souple
ISBN 10 : 3659103586 ISBN 13 : 9783659103582
Editeur : LAP LAMBERT Academic Publishing, 2012

Synopsis

The atmospheric turbulence effect on free-space optical (FSO) communications is one of the biggest problems that face FSO systems. Atmospheric turbulence is the fluctuations of the signal due to the changing of refractive index which results from those air particles which are not homogonous and are affected by temperature, pressure, altitude and wind. In this book, different proposed modulation and forward error techniques are applied to decrease the severe effect on bit error rates due to atmospheric turbulence. Two channels models of atmospheric turbulence are used: log-normal channel which represents small distances (i.e. less than 100 m) and negative-exponential channel which represents long distances up to several kilometers. The obtained results demonstrated the superior performance of avalanche photodiode over positive-intrinsic-negative (PIN) receivers with the use of concatenated Reed Solomon codes. Further, it is found that, forward error correction upgrades uncoded FSO to gain a working-distance advantage of a few kilometers.

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Présentation de l'éditeur

The atmospheric turbulence effect on free-space optical (FSO) communications is one of the biggest problems that face FSO systems. Atmospheric turbulence is the fluctuations of the signal due to the changing of refractive index which results from those air particles which are not homogonous and are affected by temperature, pressure, altitude and wind. In this book, different proposed modulation and forward error techniques are applied to decrease the severe effect on bit error rates due to atmospheric turbulence. Two channels models of atmospheric turbulence are used: log-normal channel which represents small distances (i.e. less than 100 m) and negative-exponential channel which represents long distances up to several kilometers. The obtained results demonstrated the superior performance of avalanche photodiode over positive-intrinsic-negative (PIN) receivers with the use of concatenated Reed Solomon codes. Further, it is found that, forward error correction upgrades uncoded FSO to gain a working-distance advantage of a few kilometers.

Biographie de l'auteur

Mohammed R. Abaza was born in 1987. He received the BSc degree in Electronics and Communications Engineering from College of Engineering and Technology, Arab Academy for Science, Technology and Maritime Transport, Egypt in 2009. He received his MSc degree in 2012 in Electronics and Communications Engineering from the same college.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2012
Langue
anglais
ISBN 10 
3659103586
ISBN 13 
9783659103582
Reliure
Broché
Nombre de pages
84
Coordonnées du fabricant
non disponible
Personne responsable
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