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This paper gives a brief but comprehensive review of the Multitaper spectrum estimation method that uses the data tapers or windows in digital signal processing. Instead of using a single kind of window functions, here a cluster of window functions are mentioned, which is known as Slepian tapers. This taper family minimize leakage also, and computing them requires solving eigenvalue problems that are large for long time series. However, the eigenvalue problems have a special structure that makes a fast algorithm possible.Secondly, the enabling of the algorithmic method with Cognitive Radio (CR) Technology, which is an advanced version of Software Defined Radio (SDR) Technology is discussed. SDR Technology is supposed to become a prevailing technology in the field of wireless communication. The Software Radio is an interesting area, in which the GNU Radio explores and then the Universal Software Radio Peripheral (USRP) formulates it. Here the paper also proposes the idea of constructing a block in GNU Radio Companion using the same algorithmic method in GNU Radio. Keywords— Slepian tapers, Software Defined Radio, Cognitive Radio Networks, GNU Radio, USRP.

MultiUser Spectrum Sensing based on Multitaper Method for Cognitive Environments