The growth of wireless devices affects the availability of limited frequencies or spectrum
bands as it has been known that spectrum bands are a natural resource that cannot be …

In the past decade, there has been a rapid development of new technologies in wireless
communication which has led an increased demand for radio spectrum. The radio spectrum …

ABSTRACT In wireless Communication system, Radio Spectrum is the most valuable and
limited resource. Due to traditional fixed spectrum allocation policy, there is a problem of …

Recent advancements in wireless communication are creating a spectrum shortage problem
on a daily basis. Recently, Cognitive Radio (CR), a novel technology, has attempted to …

Cognitive radio (CR) has been introduced to accommodate the steady increment in the
spectrum demand. In CR networks, unlicensed users, which are referred to as secondary …

Cognitive radio (CR) is regarded as an emerging technology, which equips wireless devices
with the capability to adapt their operating parameters on the fly based on the radio …

Cognitive Radio (CR) is a novel technology that promises to solve the lack of spectrum by
allowing secondary users to use licensed band, so that they can coexist with primary users …

Number of technologies has been developed in wireless communication and there is always
a common issue in this field ie 'Security'due to its open medium of communication. Now …

Cognitive radio technology is the vision of pervasive wireless communications that improves
the spectrum utilization and offers many social and individual benefits. The objective of the …

Cognitive Radio (CR) is a technology that promises to solve the spectrum shortage problem
by allowing secondary users to coexist with primary user without causing any interference to …