Gamut sensing in cognitive radio networks: A brief survey by using the concept of design thinking

Abstract

With an unprecedented intensification in mobile customer and mobile multimedia services radio telecommunications in general the need for more bandwidth is escalating every day. To accommodate such a large amount of wireless technologies huge bandwidth is needed. This necessitated the need to address spectrum scarcity as the spectrum is a scarce resource. But it is evident from many gamut measurement studies that much of the gamut is used in an inefficient way and its fullest potential is not exploited. This gives rise to the technology of cognitive radio networks. Having said this let us try to brief the operation of intelligent radio networks (CRN). The overview of this paper presents a detailed account of the concept of gamut sensing which a crucial step in CRN is. We address the different performance metrics related to spectrum sensing and present a brief idea of some of the research activities that are related to spectrum sensing by different researchers.