Cognitive radio networks (CRNs) are an emerging paradigm for next generation wireless
communication systems allowing for more efficient radio spectrum utilization. In order to …

In this paper, we present a new queueing model providing the accurate average system time
for packets transmitted over a cognitive radio (CR) link for multiple traffic classes with the …

Through cognitive radio (CR), unlicensed users can occupy idle spectrum bands without
interference with the primary user (PU). Generally, when the arrival rate of licensed users is …

Cognitive radio networks (CRNs) emerge as a promising solution for overcoming the
shortage and inefficient use of bandwidth resources by allowing secondary users (SUs) to …

Abstract The Fifth Generation (5G) of wireless communication systems is expected to meet a
large demand for mobile traffic and provide higher data rates, supporting bandwidth-hungry …

The recent emergence of the cognitive radio standard IEEE 802.22 is finally empowering
network operators with a new platform for their abundant services. Likewise previous …

Cognitive radio networks (CRNs) have been proposed to exploit licensed bands
opportunistically, with secondary users'(SU) activity being subordinated to primary users …

For protocol and system design in cognitive radio networks (CRNs), it is essential to identify
which system settings or environmental conditions have great impacts on the quality-of …

For session-level quality-of-service (QoS) provisioning in cognitive radio networks (CRNs), it
is essential to adopt an effective admission control scheme with appropriate parameters. In …

In this contribution, we establish a model for multi-channel cognitive radio networks (CRNs)
using the theory of priority queues. This model enables us to conduct a performance …