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 …

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 …

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

In this paper, an adaptive two-way relay cooperation scheme is studied for multiple-relay
cognitive radio networks to improve the performance of secondary transmissions. The power …

Relay selection is an effective way to achieve considerable performance gains in cognitive
relay networks (CRN). In practice, the best relay may not always be selected, thus the study …

Proactive relay selection in cognitive radio networks has recently received considerable
attention. However, its outage probability analysis is limited to partially-identical fading …

In underlay cognitive networks with regenerative relaying, secondary users operating with
primary user are adhering to stringent interference constraint which limits their transmission …

In this letter, we propose two relay selection schemes in cognitive relay networks. According
to the proposed schemes, the number of relays involved in the opportunistic relaying is …

In this paper, a hop-by-hop relay selection strategy for multi-hop underlay cognitive relay
networks (CRNs) is proposed. In each stage, relays that successfully decode the message …

In this paper, we investigate several relaying schemes for cooperative communications in
Cognitive Radio Networks (CRNs) in order to improve the performances of secondary …