Channel Optimization By Using Spectrum Sensing Techniques In Cognitive Radio Network

Authors : Rustem YİLMAZEL, Nihat İNANÇ

Pages : 693-699

Doi:10.29137/umagd.726756

View : 18 | Download : 7

Publication Date : 2020-06-30

Article Type : Research Paper

Abstract :In recent years, the rapid development of wireless technologies has increased the need for frequency spectrum usage. To overcome this problem, Cognitive Radio insert ignore into journalissuearticles values(CR); has emerged as a new technique which enables the use of free ranges in the frequency spectrum. Cognitive radio networks insert ignore into journalissuearticles values(CRNs); are based on the principle of benefiting from the empty spectrum of secondary users insert ignore into journalissuearticles values(Sus); by using sensing techniques and analyzing frequency ranges. Although the frequency spectrum is used by various technologies, some frequency ranges are used inefficiently and inadequately. Fixed spectrum allocations cause unused frequency channels in the radio frequency spectrum. Spectrum detection, which is one of the features that cognitive radio applies to reduce the inefficiency of spectrum usage, scans all the primary users insert ignore into journalissuearticles values(PUs); in the spectrum area and the empty frequency bands. In this study, a method has been proposed to detect unused stationary frequency bands and to use these frequency bands effectively. This method, which is named as matched filter detection , was examined in AWGN channel and its results were evaluated in MATLAB.
Keywords : Matched filter detection, cognitive radio, spectrum sensing