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 …

This paper explores the trade-off between cooperation and secrecy in cognitive radio
networks. We consider a scenario consisting of a primary and a secondary system. In the …

In recent years, the main trend in wireless communications has been shifted from voice
transmission to data-centric communication. This shift has caused an increase in the data …

MULTIPLE antennas at each side of the communication channel seem to be vital for future
wireless communication systems. Multi-antenna communication provides throughput gains …

With the considerable growth of wireless networks in recent years, the issue of network
security has taken an important role in the design of communication devices and protocols …

The growth of wireless networks has been considerable over the last decades. Due to the
broadcast nature of these networks, security issues have taken a critical role in today's …

In this thesis we study wireless networks modeled by the additive white Gaussian noise
(AWGN) model. The AWGN capacity region of most network topologies is unknown, which …

With significantly growing demand for wireless networks and services in recent years, the
issue of spectrum efficiency has taken a more and more important role in the design of …

The stability and continuity are very important for a Radio Digital Audio Workstation. The
output of a workstation may be discontinuous because of audio file error, network and …

Cognitive Radio has gained worldwide attention from research communities and is expected
to be a revolutionary technology for the next generation (4G) wireless systems. In this …