The device-to-device (D2D) communications has been recently proposed for reducing the
cellular network traffic by directly connecting the local nodes. In this paper, we consider a …

In this paper, the performance of dual-hop decode-and-forward (DF) cognitive relay
networks over independent non-identically distributed (inid) Weibull fading channels are …

This paper presents the performance evaluation of a secondary user (SU) in an underlay
cognitive dual-hop relaying system considering instantaneous as well as average channel …

A spectrum license grants users the right to transmit on a particular piece of spectrum.
Historically, a spectrum license has been allocated for a particular technology. While this …

We consider a cellular based primary network coexisting with a secondary network. The
primary network consists of multiple service providers (SP) and there are several …

In the commons model for the spectrum sharing, cognitive users can access the spectrum as
long as the target performance in the legitimate primary system is not violated. In this paper …

Channel spatial reuse enables transmission links to share wireless radio channels and thus
improves the spectrum utilization. However, to determine the feasibility of channel spatial …

In this paper, we propose a cooperative method to estimate the cross-channel gain (CCG)
between the cognitive transmitter (CT) and primary receiver (PR) for underlay spectrum …

In this paper, power allocation over time‐varying multiple‐access interference channels is
studied. Particularly, stochastic network sum‐rate maximizing and max‐min rate power …

The predicted exponential increase in data traffic for future 5G networks demands for
increased wireless spectrum capacity. The unlicensed spectrum bands are overburdened …