摘要：The growing demand of wireless applications has put a lot of constraints on the usage of available radio spectrum which is limited and precious resource. However, a fixed spectrum assignment has lead to under utilization of spectrum as a great portion of licensed spectrum is not effectively utilized. Cognitive radio is a promising technology which provides a novel way to improve utilization efficiency of available electromagnetic spectrum. Spectrum sensing helps to detect the spectrum holes (underutilized bands of the spectrum) providing high spectral resolution capability. This paper compares the performance of three main spectrum sensing techniques.
关键词：Cognitive Radio (CR);Energy Detection (ED);Matched Filter Detection (MFD);Cyclostationary feature Detection
