… Cognitive radio is a promising technique to improve the … underlay and/or overlay spectrum
sharing strategies are widely implemented in the current research about the cognitive radio …

… CONCLUSIONS In this paper, the imperfect CSI effects of interference links on performance
of cognitive networks have been investigated over Rayleigh fading channels. For the …

… In this work, we address the performance of underlay cognitive radio network under the
reality condition, ie, the CsI between primary and secondary networks are imperfect. We prove …

… Abstract—In the present work, an underlay cognitive radio network (CRN) is considered …
Wireless Information and Power Transfer (SWIPT) with imperfect channel state information (CSI). …

… the impact of imperfect CSI on the performance of SU in a cognitive relay network with an …
imperfection in the CSI increases ie correlation coefficient (ρ) decreases. Higher CSI (ie higher …

… For the case of imperfect CSI, we model the amount of uncertainty to be within a convex set
defined by the Schatten norm and apply the maximin optimization to obtain the solution. To …

… In this section, the effect of imperfect CSI on the secrecy performance is presented by
numerical results. Furthermore, the Monte Carlo simulation is used to prove our analysis results. …

… algorithms for underlay secondary cognitive radios operating over wireless fading channels.
… for imperfections on the sensing schemes (which rendered the primary CSI outdated and …

… radio frequency resource. With the ability to sense the surrounding radio spectrum, cognitive
radio (… efficient approach to utilize the limited radio resource. CR networks allow secondary …

… the effect of imperfect channel state information (CSI) on underlay cognitive radio networks
in … Based on proactive partial DF relaying and in presence of imperfect CSI, the relay with the …