On the Performance of RF-FSO Links with and without Hybrid ARQ
Behrooz Makki, Tommy Svensson, Thomas Eriksson, Mohamed-Slim Alouini
TL;DR
This paper analyzes the performance of hybrid RF-FSO communication links with perfect CSI, deriving formulas for decoding success, throughput, and outage probability, and evaluates the impact of adaptive power and channel conditions.
Contribution
It provides new closed-form expressions for RF-FSO link performance metrics considering HARQ and adaptive power allocation.
Findings
RF-FSO links show high efficiency under various conditions.
Hybrid ARQ improves decoding success probability.
Adaptive power allocation enhances throughput.
Abstract
This paper studies the performance of hybrid radio-frequency (RF) and free-space optical (FSO) links assuming perfect channel state information (CSI) at the receiver. Considering the cases with and without hybrid automatic repeat request (HARQ), we derive closed-form expressions for the message decoding probabilities as well as the throughput and the outage probability of the RF-FSO setups. We also evaluate the effect of adaptive power allocation and different channel conditions on the throughput and the outage probability. The results show the efficiency of the RF-FSO links in different conditions.
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