In this paper, we consider user scheduling and power allocation techniques for downlinks
where transmitted message must be kept confidential from all other unintended users and …

In this paper, an adaptive spectrum-leasing scheme is proposed for multiuser cognitive radio
networks. Based on two-path successive relaying and decode-and-forward protocols, each …

In a cognitive (secondary) multiple-access network which is subject to interference power
constraints imposed by a primary system, it is desirable to mitigate the interference on the …

A channel-and-sensing-aware channel access (CSCA) policy is proposed for multi-channel
interweave cognitive radio systems, where multiple secondary users (SUs) are competing …

This paper investigates the resource allocation problem for a multiuser underlay cognitive
system where the secondary system is allowed to transmit and cooperate with the primary …

In this study, the authors consider the asymptotic capacity of wireless multicast and unicast
transmission schemes in a spectrum-sharing system. In these schemes, a secondary access …

In this paper, we analyze the asymptotic capacity in a spectrum sharing system where a
secondary access point (SAP) restrictively utilizes the licensed spectrum of an active primary …

This paper considers a cognitive (secondary) multiple-access network with n transmitters,
subject to a set of interference power constraints imposed by a primary system with Mp …

This paper investigates the secondary multiuser diversity in spectrum sharing networks. We
show that by exploiting the fading nature of interference links, the secondary system to …

Due to the broadcast nature of the wireless medium, the wireless networks are more
vulnerable to the security threats than the wired networks. For this reason, the concerns on …