Prior results on performance analysis for cognitive relay networks mainly involve perfect
channel state information (CSI), which is not readily available. Thus, the effects of outdated …

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 …

We analyze relay selection for an underlay cognitive radio (CR) two-way relay network
(TWRN) with zero-forcing (ZF) transmission and receiving. The source and the destination …

This paper studies best relay selection in a multi-cell cognitive network with amplify-and-
forward (AF) relays. We derive the analytical integral-form expression of the cumulative …

We study the performance of a dual-hop cognitive radio network sharing the spectrum of a
primary network in an underlay fashion. In particular, the cognitive network consists of a …

In this paper, we present the optimal power allocation and relay precoder design for a
cognitive relay network employing non-orthogonal multiple access (NOMA) technique. The …

The generalized order relay selection scheme is efficient in situations where the
opportunistic relaying scheme could fail. Such conditions include; the presence of imperfect …

This paper studies a cooperative cognitive radio network where two primary users (PUs)
exchange information with the help of a secondary user (SU) that is equipped with multiple …

The outage behavior of a dual-hop multi-source multi-relay cooperative underlay cognitive
radio network is investigated in the presence of multiple primary transmitters and multiple …

In this paper, we address the problem of maximizing the received signal-to-noise ratio (SNR)
of a relay-assisted secondary network. In particular, a pair of cognitive radio nodes …