PERFORMANCE OF WAVELET PACKET TRANSFORM BASED ENERGY DETECTOR FOR SPECTRUM SENSING

Today wireless field is rapidly evolving. Due to the large number of standards, spectrum availability has become an important issue. In this context, an emerging technology, cognitive radio (CR) has been come out to solve this spectrum scarcity problem. The most important function of cognitive radio is spectrum sensing which requires more accuracy & low complexity. In this paper we analyze the performance of energy detector spectrum sensing algorithm based on wavelet packet transform (WPT) in cognitive radio. KeywordsCognitive radio (CR), Energy detection (ED), Primary user (PU), Wavelet Packet Transform (WPT).

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