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.
The spectrum or the whitespaces that are not being used by licensed or primary users (PUs) can be sensed and operated by the unlicensed or the secondary users (SUs) in the cognitive radio networks (CRN) in such a way that there is no impact on the activities of the primary users. One mechanism for topology management is referred to as clustering. This organizes the nodes in logical sets so that the...