The remarkable growth in the demand for multimedia streaming over wireless networks is
challenged by spectrum scarcity. To mitigate the effect of such a challenge, Cognitive Radio …

Cognitive radio (CR) technology can solve the problems of spectrum scarcity and low
spectrum utilization. However, random behavior of the primary user (PU) appears to be an …

In the existing cooperative cognitive radio, primary users are generally assumed to be more
than capable of supporting their target throughput, thereby the rate enhancement or the …

Cognitive radio (CR) is a dynamic spectrum access technology as a solution to spectrum
under-utilization problem in some licensed bands. Operating over an exceedingly wide …

In this study, an integrated scheme is proposed to stream real‐time scalable videos from a
base station to multiple secondary users over cognitive radio networks. The objective of the …

In this paper, we consider a wideband cognitive radio network (CRN) containing a single
secondary user (SU) which can only serially sense multiple narrowband channels and thus …

Due to significant advances in wireless access technologies and the proliferation of wireless
devices and applications, there is a fundamental change in wireless network traffic. As …

Cognitive radio (CR) is an emerging concept that aims at enabling more efficient utilization
of the frequency spectrum in future generations of wireless networks through the reuse of …

The efficiency of Cognitive Radio Networks (CRNs) depends on the used spectrum
allocation algorithms. In this paper, we propose a new Dynamic Spectrum Allocation (DSA) …

In an effort to improve radio spectrum management and promote a more efficient use of it,
regulatory bodies are currently trying to adopt a new spectrum access model. At the same …