A survey of spectrum sensing techniques in Cognitive Radio network

There is a huge demand of spectrum now a days, but in conventional system radio spectrum is very scared resource. To avoid interference and improve spectrum saturation, Cognitive Radio (CR) concept was proposed. CR is the greatest mechanism for use spectrum efficiently. The main objective of CR is t...

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Bibliographic Details
Published in2015 International Conference on Advances in Electrical Engineering (ICAEE) pp. 161 - 164
Main Authors Alom, Md Zulfikar, Godder, Tapan Kumar, Morshed, Mohammad Nayeem
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2015
Subjects
channel utilization
Cognitive radio
cooperative sensing
Detectors
Electrical engineering
Interference
Signal to noise ratio
spectrum sensing
Time-frequency analysis
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Summary:There is a huge demand of spectrum now a days, but in conventional system radio spectrum is very scared resource. To avoid interference and improve spectrum saturation, Cognitive Radio (CR) concept was proposed. CR is the greatest mechanism for use spectrum efficiently. The main objective of CR is to use this limited spectrum resources without interfering the primary users (PUs). This paper explains the several spectrum sensing methods that used in CRso far and also deals benefit-drawback of each sensing method. We explained the cooperative spectrum sensing and it's all forms; and also the multi-dimensional spectrum sensing concept. Cooperative sensing shares its sensing data with others and utilizes the sensing outcomes of others. As a result the probabilities of miss detection and probabilities of false alarm decreased. Finally, we provided an overview of CR for opportunistic spectrum access and future research challenges regarding spectrum sensing issues.
DOI:10.1109/ICAEE.2015.7506821