Author
Aghajanzadeh, S. M., Uysal, Murat
Publication Date
2011
Publication Place
-
IEEE
Subject
Free-space optical systems, Multi-hop transmission, Finite-SNR diversity-multiplexing tradeoff, Atmospheric turbulence-induced fading
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
0090-6778
Record ID
dadd15d7-9ba2-4183-b701-4d6dce3ff8da
Library Location
Electrical & Electronics Engineering
Date
2011
Notes
Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Sample Text
In this paper, we investigate multi-hop relaying as an efficient fading mitigation tool for coherent free-space optical (FSO) systems over atmospheric turbulence channels. We consider an FSO relaying system with decode-and-forward relay nodes and multiple heterodyne receivers with modal compensation. Based on a recently introduced statistical characterization for the combined effects of log-normal turbulence fading and modal compensation, we derive the outage probability and quantify the potential performance improvements through the derivation of diversity multiplexing tradeoff (DMT) and diversity gain. Our outage analysis yields impressive power savings for multi-hop relaying even with a single-relay. In addition, the DMT analysis in practical signal-to-noise ratio (SNR) ranges demonstrates that multi-hop transmission scheme improves finite-SNR diversity gain throughout the range of the multiplexing gain.
DOI
10.1109/TCOMM.2011.050911.100069
Cilt
59
