Cognitive relay technology has been envisioned as a promising transmission scheme to
enhance the reliability and coverage of secondary networks. However, the performance of …

This paper analytically evaluates the outage performance of relaying cognitive networks with
reactive relay selection and selection combining under general operation conditions such as …

Cooperative relay technology was recently introduced into cognitive radio networks in order
to enhance network capacity, scalability, and reliability of end-to-end communication. In this …

Cognitive radio networks using relays have been introduced to enhance secondary network
performance by having secondary users (SUs) transmit in two hops. This paper develops a …

Cooperative relay technology has recently been introduced into cognitive radio (CR)
networks to enhance the network capacity, scalability, and reliability of end-to-end …

In this study, the author investigates the outage performance of cognitive relay networks, in
which the best relay is selected based on full and partial channel state information …

In this paper, we present performance analysis for underlay cognitive decode-and-forward
relay networks with the Nth best relay selection scheme over Nakagami-m fading channels …

In this paper, we investigate joint impacts of hardware impairments, imperfect channel state
information (CSI) and interference constraints at secondary users in an underlay decode …

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 …

This letter presents the outage performance analysis for a cognitive relay network (CRN)
with imperfect channel knowledge estimations. Under the condition of imperfect channel …