Relay-assisted free-space optical (FSO) transmission exploits the fact that atmospheric turbulence fading variance is distance dependent and yields significant performance gains by taking advantage of the resulting shorter hops. In this paper, we investigate how to determine optimal relay locations in serial and parallel FSO relaying so as to minimize the outage probability and quantify performance improvements obtained through optimal relay placement. We further present a diversity gain analysis for serial and parallel FSO relaying schemes and quantify their diversity advantages in terms of the number of relays and channel parameters.
© 2013 OSA
Original Manuscript: May 7, 2012
Revised Manuscript: August 19, 2012
Manuscript Accepted: October 4, 2012
Published: December 14, 2012
Mohammadreza A. Kashani, Majid Safari, and Murat Uysal, "Optimal Relay Placement and Diversity Analysis of Relay-Assisted Free-Space Optical Communication Systems," J. Opt. Commun. Netw. 5, 37-47 (2013)