Performance Analysis of Decode-and-Forward Relaying in Gamma-Gamma Fading Channels

Performance Analysis of Decode-and-Forward
Relaying in Gamma-Gamma Fading Channels

Manav R. Bhatnagar, Member, IEEE

Abstract—We analyze performance of the decode-and-forward
(DF) protocol in the free space optical (FSO) links following
the Gamma-Gamma distribution. The cumulative distribution
function (cdf) and probability density function (pdf) of a random
variable containing mixture of the Gamma-Gamma and Gaussian
random variables is derived. By using the derived cdf and pdf,
average bit error rate of the DF relaying is obtained.