Free-space optics (FSO) can provide cost-effective, high-bandwidth, wireless connections. However, atmospheric turbulence may degrade the performance of FSO links by causing intensity and power scintillations at the receiver. Multicanonical Monte Carlo sampling is used in conjunction with the phase screen method to calculate the statistics, and particularly the probability density function (PDF), of the power fluctuations at an FSO receiver. This allows the efficient calculation of the PDF even for very small values with a limited number of iterations. The obtained PDF can be used to characterize the performance of the system in terms of the error probability.
© 2006 Optical Society of America
Atmospheric and Oceanic Optics
Original Manuscript: June 6, 2006
Manuscript Accepted: July 14, 2006
Published: October 11, 2006
T. Kamalakis, T. Sphicopoulos, S. Sheikh Muhammad, and E. Leitgeb, "Estimation of the power scintillation probability density function in free-space optical links by use of multicanonical Monte Carlo sampling," Opt. Lett. 31, 3077-3079 (2006)