TY - JOUR
T1 - BER performance of free-space optical transmission with spatial diversity
AU - Navidpour, S. Mohammad
AU - Uysal, Murat
AU - Kavehrad, Mohsen
N1 - Funding Information:
Manuscript received February 11, 2006; revised September 15, 2006 and January 26, 2007; accepted January 28, 2007. The associate editor coordinating the review of this letter and approving it for publication was X. Wang. This paper was presented in part at IEEE VTC’04-Fall, Los Angeles, California, USA, September 2004. The work of S. M. Navidpour and M. Kavehrad is supported in part by a DARPA Grant sponsored by the U.S. Air Force Research Laboratory/Wright-Patterson AFB Contract-FA8650-04-C-7114 and The Pennsylvania State University CICTR. The work of M. Uysal is supported in part by an NSERC Special Opportunity Grant (SROPJ305821-05).
PY - 2007/8
Y1 - 2007/8
N2 - Free space optical (FSO) communications is a cost-effective and high bandwidth access technique, which has been receiving growing attention with recent commercialization successes. A major impairment in FSO links is the turbulence-induced fading which severely degrades the link performance. To mitigate turbulence-induced fading and, therefore, to improve the error rate performance, spatial diversity can be used over FSO links which involves the deployment of multiple laser transmitters/receivers. In this paper, we investigate the bit error rate (BER) performance of FSO links with spatial diversity over log-normal atmospheric turbulence fading channels, assuming both independent and correlated channels among transmitter/receiver apertures. Our analytical derivations build upon an approximation to the sum of correlated log-normal random variables. The derived BER expressions quantify the effect of spatial diversity and possible spatial correlations in a log-normal channel.
AB - Free space optical (FSO) communications is a cost-effective and high bandwidth access technique, which has been receiving growing attention with recent commercialization successes. A major impairment in FSO links is the turbulence-induced fading which severely degrades the link performance. To mitigate turbulence-induced fading and, therefore, to improve the error rate performance, spatial diversity can be used over FSO links which involves the deployment of multiple laser transmitters/receivers. In this paper, we investigate the bit error rate (BER) performance of FSO links with spatial diversity over log-normal atmospheric turbulence fading channels, assuming both independent and correlated channels among transmitter/receiver apertures. Our analytical derivations build upon an approximation to the sum of correlated log-normal random variables. The derived BER expressions quantify the effect of spatial diversity and possible spatial correlations in a log-normal channel.
UR - http://www.scopus.com/inward/record.url?scp=34548059552&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34548059552&partnerID=8YFLogxK
U2 - 10.1109/TWC.2007.06109
DO - 10.1109/TWC.2007.06109
M3 - Article
AN - SCOPUS:34548059552
SN - 1536-1276
VL - 6
SP - 2813
EP - 2819
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
IS - 8
ER -