… The FSO link is modeled by the M distribution in the presence of pointing errors, while the
RF link is modeled by Nakagami- m fading. Utilizing amplify-and-forward fixed-gain relaying, …

… amplify-and-forward (AF)-based dual-hop asymmetric radio frequency–free space optical
(RF–FSO… The RF link experiences Nakagami- m fading and the FSO link experiences Gamma–…

… In this paper, we consider two hybrid combinations of RF and FSO with dual-hop amplify-and-forward
(AF) selection relaying systems, and then we analyze the performances of those …

… In this work, an amplify-and-forward variable-gain relayed mixed RF-FSO system is studied.
… consists of a radio frequency (RF) link followed by a free space optical (FSO) channel. The …

… the turbulence such as hyrbid RF/FSO, where RF link is used as a backup for FSO links [2];
Radio on FSO, in which the radio frequency (RF) signals are transmitted through FSO links [3]…

… cognitive radio systems and RF–FSO relaying with relay selection, in this article, a hybrid
dual-hop AF relaying cognitive radio system with asymmetric RF–FSO link and partial relay …

… ) first-hop link and a free space optical (FSO) link for the second-hop. We assume that no
direct RF and FSO link exists between the source and destination nodes. The RF link …

… Free-space optical (FSO) communication systems have been thoroughly investigated for …
an alternative solution to radio frequency (RF) links. Now, FSO technology is further considered …

… FSO/RF-FSO topology performs better than a single FSO link in terms of outage probability
and BER. The dual-hop mixed RF-FSO link is realized with an amplify and forward … in the FSO …

… -wave (mmWave) radio-frequency (RF) backup link improves the performance of the relay-aided
FSO system further; ie, we study the performance of a hybrid FSO/(FSO-FSO)/(RF-FSO) …