The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Spectrum sensing optimization is the process of finding the optimal set of sensing parameters in order to maximize the optimization objective while meet the restrictions imposed. The detection accuracy of a cognitive radio network (CRN) improves through using a cooperative spectrum sensing (CSS) scheme. However, increasing the number of SU necessitates a growth in the cooperation overhead of the system...
Cognitive Radio (CR) sensing has been widely considered as a spectrum scanning mechanism that allows secondary users (SUs) or cognitive radio users to use detected spectrum holes caused by primary user (PU) absence. Hard decision combining (HDC) schemes are proposed to combine the sensing decisions of the collaborated users to come out with a global binary decision on the presence or absence PUs....
Cognitive radios (CRs) have been recently emerging as prime candidates to enhance spectral efficiency by exploiting spectrum-aware systems which can reliably monitor licensed users’ activities. CR users monitor such activities by performing spectrum sensing to detect potential white spaces. However, this process of local sensing might be a challenging task in fading environments. The inefficiency...
Spectrum sensing is one of the critical aspects in cognitive radio (CR). CR user must be able to detect the spectrum opportunity reliably and efficiently in order to use the available spectrum. In spectrum sensing, a local radio might fail to monitor the available spectrum holes due to shadowing and hidden terminal problem. Cooperative spectrum sensing can be employed to combat this problem using...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.