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Cognitive radio network exploits spectrum hole generated by vacation of primary user on the frequency. However, network design paradigms of primary and secondary can be different except for frequency bandwidth in which they are operating. One of differences is network scale which is stemming from transmission power gap between primary and secondary. Especially, small scale primary user such as microphone...
The demand for wireless communication has grown remarkably in the last year, consequently raising the problem of spectrum scarcity. In this context, cognitive radio is an emerging technology that aims to overcome that scarcity which is one of the most challenging problems in modern wireless communication. Among its fundamental function, the most important is the spectrum sensing which require precise...
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