This paper presents a promising solution to address the scarcity of spectrum resources and
enhance spectrum efficiency in the context of cognitive radio (CR)-based soft-switching free …

Free space optical (FSO) communication has emerged to provide line of sight connectivity
and higher throughput over unlicensed optical spectrums. Cognitive radio (CR), on the other …

To compensate for the deficiencies of low spectrum efficiency (SE) and scarce spectrum
resources in Radio Frequency (RF), the FSO/THz-RF dual-hop downlink based on Non …

This paper presents a performance analysis for the average channel capacity of an
asymmetric two-hop cooperative relaying in cognitive-radio system, in which the first hop is a …

This paper analyzes outage performance in a dual-hop system that uses a combination of
free-space-optical (FSO) and radio-frequency (RF) transmission system, within a cognitive …

Wireless communication is facing an increasingly severe spectrum scarcity problem. Hybrid
free space optical (FSO)/millimetre wavelength (MMW) radio frequency (RF) systems and …

In this paper, we propose a novel switching scheme for hybrid free-space optical (FSO)/radio
frequency (RF) system. The outage probability and average bit error rate (BER) expressions …

In this paper, we study the outage performance of multiuser mixed underlay radio frequency
(RF)/multidestinations free-space optical (FSO) links. For RF links, we consider a secondary …

We investigate the performance of asymmetric radio frequency (RF) and free-space optical
(FSO) dual-hop cognitive amplify-and-forward relay networks where RF links are subject to …

Two emerging technologies, cognitive radio (CR) and free-space optical (FSO)
communication, have created much interest both in academia and industry recently as they …