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Telfor Journal
2015, vol. 7, br. 1, str. 31-36
jezik rada: engleski
vrsta rada: neklasifikovan

Evaluation of Kolmogorov - Smirnov test and energy detector techniques for cooperative spectrum sensing in real channel conditions
(naslov ne postoji na srpskom)
Department of Radio Electronics, Brno University of Technology, Brno, Czech Republic



MEYS of the Czech Republic project LD12006, with the corresponding COST action IC1004. Thanks also for partial support of the BUT Internal project FEKT-S-14-2177 (PEKOS)


(ne postoji na srpskom)
The cognitive radio technology allows solving one of the main issues of current wireless communication technologies, namely a deficit of vacant spectrum. A dynamic spectrum access used in the cognitive radio networks (CRN) gives an ability to access an unused spectrum in real time. Cooperative spectrum sensing is the most effective method for spectrum holes detecting. It combines sensing information of multiple cognitive radio users. In this paper, an experimental evaluation of spectrum sensing methods based on the Kolmogorov - Smirnov statistical test and Energy Detector using the Universal Software Radio Peripheral (USRP) devices synchronized through a MIMO cable and with further processing in the GNU Radio and Matlab software are presented. Three hard decision fusion schemes are analyzed. Simulation comparison between these rules is presented via Receiver Operating Characteristic (ROC) curves. The influence of real channel with interferences is compared in contrast to commonly assumed AWGN channel model of vacant channel noise.

Ključne reči

Spectrum sensing; K-S test; Energy Detector; Fusion Rules; Receiver Operating Characteristic (ROC); GNU Radio; USRP; MIMO


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