Spectrum Sensing Methods in Cognitive Radio

Abstract

Cognitive Radio offers a solution by utilizing the spectrum holes that represent the potential opportunities for non-interfering use of spectrum which requires three main tasks- Spectrum Sensing, Spectrum Analysis and Spectrum Allocation. Spectrum sensing involves obtaining the spectrum usage characteristics across multiple dimensions such as time, space, frequency, and code and determining what type of signals are occupying the spectrum. In this project, OFDM based Cognitive Radio and Spectrum Sensing methods namely Energy Detection Based Spectrum Sensing with Wavelet packet transform and Cyclostationary Spectrum Sensing are discussed.