This paper proposes exact and limit outage probability expressions for thoroughly
evaluating the performance of cooperative cognitive networks with opportunistic relay …

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 …

With the rapid development and the increasing use of wireless devices, spectrum scarcity
has become a problem. The higher frequencies have bad propagation characteristics and …

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 …

Few papers in literature deal with interference in cognitive relay networks (CRNs) in both
directions, ie, interference from secondary user (SU) on the primary user (PU) and …

This paper proposes accurate interference probability and bit error rate formulas for
cognitive relay networks with underlay spectrum sharing and channel estimation error …

This paper analyzes outage performance of cognitive cooperative networks with best relay
selection (BRS) and maximum ratio combining (MRC) under maximum transmit power …

This paper analyses the outage performance of a multihop relay-based cognitive radio
network under imperfect channel state information. A backoff power control scheme 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 study the impact of cache on the multiuser cognitive relay networks with
outdated channel state information (CSI), where the transmission from the multiple …