Author : Parna N Pandith 1
Date of Publication :18th April 2019
Abstract: Cognitive radio (CR) is a smart radio used as a communication technique which is capable of detecting vacant communication channels in selected spectrum and assign these free channels to the users. Spectrum assigned to a particular user may not be used at a particular time or location which leads to spectrum holes or white spaces. This leads to inappropriate exploitation of spectrum. One solution for spectrum management is dynamic spectrum access (DSA). This helps in optimizing the spectrum and helps in minimizing the interference to different users. Main elements of CRN namely spectrum sensing, spectrum sharing and spectrum mobility are discussed in detail along with related issues.
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