On the Performance of Mixed RF/FSO Variable Gain Dual-Hop Transmission Systems with Pointing Errors

Ansari I. S., YILMAZ F., Alouini M.

IEEE 78th Vehicular Technology Conference (VTC Fall), Nevada, United States Of America, 2 - 05 September 2013 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • Doi Number: 10.1109/vtcfall.2013.6692317
  • City: Nevada
  • Country: United States Of America
  • Istanbul Technical University Affiliated: No


In this work, the performance analysis of a dual-hop relay transmission system composed of asymmetric radio-frequency (RF) and unified free-space optical (FSO) links subject to pointing errors is presented. These unified FSO links account for both types of detection techniques (i.e. indirect modulation/direct detection (IM/DD) as well as heterodyne detection). More specifically, we derive new exact closed-form expressions for the cumulative distribution function, probability density function, moment generating function, and moments of the end-to-end signal-to-noise ratio of these systems in terms of the Meijer's G function. We then capitalize on these results to offer new exact closed-form expressions for the outage probability, higher-order amount of fading, average error rate for binary and M-ary modulation schemes, and ergodic capacity, all in terms of Meijer's G functions. All our new analytical results are verified via computer-based Monte-Carlo simulations.