The ever-increasing demand for higher data rates in wireless communications in the face of
limited or underutilized spectral resources has motivated the introduction of cognitive radio …

Spectrum Sensing (SS) plays an essential role in Cognitive Radio (CR) networks to
diagnose the availability of frequency resources. In this paper, we aim to provide an in-depth …

The lack of availability of radio spectrum for wireless communication purposes is becoming
a serious problem as more wireless systems and services are being developed and operate …

With the rapid deployment of new wireless devices and applications, the last decade has
witnessed a growing demand for wireless radio spectrum. However, the fixed spectrum …

The spectrum sensing problem has gained new aspects with cognitive radio and
opportunistic spectrum access concepts. It is one of the most challenging issues in cognitive …

This book examines signal processing techniques for cognitive radios. The book is divided
into three parts: Part I, is an introduction to cognitive radios and presents a history of the …

In this article we present a feasibility study of spectrum-sensing techniques using a research
testbed platform for exploration and demonstration of cognitive radio systems. Our cognitive …

The growing demand of wireless applications has put a lot of constraints on the usage of
available radio spectrum which is limited and precious resource. However, a fixed spectrum …

Cognitive radio allows for usage of licensed frequency bands by unlicensed users.
However, these unlicensed (cognitive) users need to monitor the spectrum continuously to …

Cognitive radios sense the radio spectrum in order to find unused frequency bands and use
them in an agile manner. Transmission by the primary user must be detected reliably even in …