Figure 2From: On the Capacity of FSO Links over Gamma-Gamma Atmospheric Turbulence Channels Using OOK Signaling(a) Maximization of the capacity bound in (15) and mutual information over the input distribution for the nonturbulent optical channel when and a rectangular pulse shape with are adopted. (b) Mutual information versus the input distribution for values of SNR of dB, dB, and dB.Back to article page