In this Letter, closed-form expressions of ergodic capacity, outage probability,
and outage rate are derived for an atmospheric optical communication link using
intensity modulation and direct detection with unbounded optical wavefront
propagating through a homogeneous and isotropic turbulent medium. The optical
scintillation of the received signal is modeled with the recently proposed
Málaga or turbulence distribution. By taking advantage of
this unifying statistical model, the expressions here presented are valid for
all possible irradiance fluctuation conditions, leading to direct relationships
between turbulence parameters and link capacity performance.
© 2013 Optical Society of America
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