Most of the research in cognitive radio field is primarily focused on finding and improving
secondary user (SU) performance parameters such as bit error rate, outage probability and …

One of the fundamental elements impacting the performance of a wireless system is
interference, which has been a long-term issue in wireless networks. In the case of cognitive …

In this paper, the impact of co-channel interference (CCI) on the performance of an underlay
cognitive radio (CR) network over Nakagami-m fading channels is presented and analyzed …

Cognitive radio is a promising technology for sharing the underutilized frequency bands that
have been licensed to primary users. However, due to the uncertainty in detecting the …

Cognitive radio allows secondary users to use the same existing frequency spectrum band
as primary users. This co-existence has several impacts on the whole network. This has …

In this paper, the secondary users (SUs) in a cognitive radio utilizing the power allocation of
Nonorthogonal multiple access is analyzed. In the proposed model, the interference of SUs …

In this paper, we analyze the probability of error for secondary users employed in a cognitive
radio network operating within the vicinity of several primary users. Secondary (unlicensed) …

In a typical cognitive radio network (CRN), secondary users can only access the channel
when they do not harmfully interfere with the primary users. Therefore, an accurate …

The performance of both primary and secondary networks in underlay cognitive radio
networks (CRNs) with the help of incremental amplify and forward (IAF) relaying under …

Opportunistic spectrum access creates the opening of under-utilized portions of the licensed
spectrum for reuse, provided that the transmissions of secondary radios do not cause …