A spectrum-sharing communication system where the secondary user is aware of the
instantaneous channel-state information (CSI) of the secondary link but knows only the …

Cognitive radio (CR) systems are potentially capable of mitigating the spectrum shortage of
contemporary wireless systems. In this paper, we provide a brief overview of CR systems …

The cognitive interference channel is a two-user interference channel in which one
transmitter is non-causally provided with the message of the other transmitter. This channel …

This paper investigates cooperation for secrecy in cognitive radio networks. In particular, we
consider a four-node cognitive scenario where the secondary receiver is treated as a …

In this paper, we investigate cooperative secure communications in a four-node cognitive
radio network where the secondary receiver is treated as a potential eavesdropper with …

The interference channel with a cognitive relay (IFC-CR) consists of the classical IFC with
two independent source-destination pairs whose communication are aided by an additional …

In this paper, we consider the simultaneous connectivity of primary and secondary networks
forming a cognitive model. It is assumed that the cognitive model includes guard zones that …

This paper provides a survey of the state-of-the-art information theoretic analysis for overlay
multi-user (more than two pairs) cognitive networks and reports new capacity results. In an …

A class of cognitive interference channels with state are investigated, in which a primary
transmitter sends a message to two receivers (receivers 1 and 2) with assistance of a …

We study the joint source-channel coding problem of transmitting a discrete-time analog
source over an additive white Gaussian noise (AWGN) channel with interference known at …