Cognitive radio technology improves radio resource usage by reconfiguring the wireless
connection settings according to the optimum decisions, which are made on the basis of the …

This paper presents a distributed cross-layer optimization algorithm for a multihop cognitive
radio network, with the objective of maximizing data rates for a set of user communication …

Cognitive radio (CR) is a revolution in radio technology and is viewed as an enabling
technology for dynamic spectrum access. This paper investigates how to design distributed …

The concept of cognitive radio networks has introduced a new way of sharing the open
spectrum flexibly and efficiently. However, there are several issues that hinder the …

Cognitive radio (CR) technology opens the licensed spectrum bands for opportunistic usage
and initiates spectrum trading to improve the spectrum utilization. In this paper, we …

We consider a network of cognitive users (also referred to as secondary users (SUs))
coexisting and sharing the spectrum with primary users (PUs) in an underlay cognitive radio …

Cognitive Radio (CR) is an attractive technology to deal with current spectrum scarcity
problem, while cooperative relay can make distributed receivers benefit from spatial diversity …

Measurement studies have shown that uneven and dynamic usage patterns by the primary
users of license based wireless communication systems often lead to temporal and spatial …

This book describes a communication paradigm that could shape the future of wireless
communication networks, Opportunistic Spectrum Access (OSA) in Cognitive Radio …

Cooperative cognitive radio networks (CCRNs) enable secondary users (SUs) to access
primary resource by cooperation with active primary users (PUs). For the cooperation …