Cognitive Radio (CR) is a comparatively new technology in which problems like
underutilization of spectrum and spectrum scarcity is solved based on the revolutionary …

ABSTRACT A basic problem facing the future in wireless systems is where to find suitable
spectrum bands to fulfill the demand of future services. While all of the radio spectrum is …

Cognitive radio (CR) is the enabling technology for supporting dynamic spectrum access:
the policy that addresses the spectrum scarcity problem that is encountered in many …

Cognitive radio is a revolutionary technology that aims for remarkable improvements in
efficiency of spectrum usage. It will change the way the radio spectrum is regulated, but also …

Cognitive radio has been evolving as a promising technological solution to the problem of
frequency spectrum underutilization over the past decade in wireless communication …

Spectrum is a very precious resource and thus underutilization of a large part of allocated
spectrum is not affordable. Where increasing demand for wireless applications has made it …

The future of Wireless Communication Technology is going to be basically based on
Cognitive Radio (CR) or Intelligent Radio (IR). At present the Spectrum allocation governed …

With today's ambition for more wireless devices and systems, the need for spectral
resources to accommodate these systems grows everyday, but the remaining spectrum …

Cognitive Radio (CR) it refers to detect the unused spectrum and sharing it without harmful
interference with other users. an its intelligent wireless communication system and …

This paper provides an overview of major problems that are confronting wireless
communication with regard to spectrum use in general ie by all sectors, government, private …