Performance of free-space optical communication systems using circle polarization shift keying with spatial diversity receivers

Abstract

Corresponding author: yaoyong@hit.edu.cnReceived January 30, 2013; accepted March 10, 2013; posted online July 17, 2013A closed-form bit-error rate (BER) expression is derived for free-space optical (FSO) communicationsystems with circle polarization shift keying and spatial diversity receivers in the gamma-gamma (GG)distribution fading channel. This model can predict the performance without the need of lengthy simula-tion runs. The performance can be analyzed by some system parameters such as atmospheric conditions,link length, communication wavelength, receiver aperture size, and number of spatial diversity receivers.Numerical results demonstrate the influence of the above parameters on the FSO systems and show quan-titatively the differences in behavior among various different parameters.OCIS codes: 010.1300, 010.1330, 060.2605, 060.4080.doi: 10.3788/COL201311.S20101.