Cognitive Radio Network (CRN) provides effective capabilities for resource allocation with
the valuable spectrum resources in the network. It provides the effective allocation of …

A cognitive radio network has the capability to detect the channels present in wireless
spectrum automatically so that it is possible to perform concurrent communication. The major …

Cooperative relaying being a novel technique in cognitive radio (CR) communications
promises enhanced performance for secondary users (SU) by exploiting spatial diversity …

In cognitive radio networks (CRNs), dynamic spectrum access has been demonstrated as an
effective way to improve the spectrum utilization. Spectrum holes can be exploited not only …

Cognitive radio (CR) is an effective way to improve the utilization of spectrum resource. This
paper focuses on the resource allocation in cooperative relay cognitive radio networks and …

This letter investigates the resource optimization problem for the multi-user multi-relay
decode-forward (DF) cognitive radio networks. The novel optimization metric, namely the …

Cognitive Radio has been widely regarded as an effective way to improve the spectrum
utilization. In Cognitive Radio Networks (CRN), the heterogeneity of spectrum availability …

Cognitive radio networks with cooperative communications can effectively improve spectrum
efficiency and data rate. Under this network scenario, there are three possible transmission …

This paper addresses a cognitive radio (CR) network scenario where a relay is assigned to
mitigate interference to primary users (PUs). We develop an average probability of …

In recent years, the combination of cognitive radio and collaborative communication has
been widely studied and applied because of its ability to increase user throughput and …