In this paper, we investigate the outage performance of free-space optical mesh networks, which build upon the combination of serial (multi-hop) and parallel relaying. We assume log-normal atmospheric turbulence channels and derive outage probability expressions for the multi-hop parallel relaying scheme under consideration. Our outage probability analysis demonstrates substantial performance improvements with respect to both standalone serial and parallel relaying schemes. Furthermore, we present a diversity gain analysis and quantify the achievable diversity order in terms of the number of relays and the turbulence channel parameters.
© 2013 Optical Society of America
Original Manuscript: June 11, 2012
Revised Manuscript: June 7, 2013
Manuscript Accepted: June 11, 2013
Published: July 24, 2013
Mohammadreza A. Kashani and Murat Uysal, "Outage Performance and Diversity Gain Analysis of Free-Space Optical Multi-hop Parallel Relaying," J. Opt. Commun. Netw. 5, 901-909 (2013)