Spectrum Sensing of Multi-path Fading Channels for Cognitive Radio Application

Various numbers of parameters are there to sense the spectrum. These parameters include power consumption, how much spectrum is vacant, noise level, interference level etc. Spectrum sensing is done particularly in two areas viz. frequency and time. But it is not mandatory that spectrum sensing is done only in these two areas. There are numerous numbers of areas like code domain and the area of the phase where coding and angles come into existence. The best tool to sense whether the primary user is present or not is the cognitive radio. The crucial issue in the technology of cognitive radio is spectrum sensing. The shadowing, fading, etc. are the numerous number of interferences and cognitive radio is the best to reduce this interferences.