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.
Emerging wireless applications has made the issue of spectrum scarcity inevitable. To resolve this issue, cognitive radio networks are proposed. Cognitive Radios are intelligent adaptable devices which intelligently sense the spectrum and find out spectrum holes. In this paper, a Token based MAC protocol is proposed for cognitive radio wireless mesh networks. This protocol consists of three phases...
In MANETs, there are many critical issues such as energy consumption, QoS, exposure to attacks, link stability etc. that need to be addressed for improved communication. ‘Link Stability’ is important because radio links are likely to be unreliable due to node mobility. This instability leads to increased rerouting which further escalates routing overhead. One way of reducing routing overhead is use...
Wi-Fi and ZigBee wireless technologies share same 2.4 GHz band. However Wi-Fi uses higher power levels compared with ZigBee. When these both technologies are used in a device simultaneously there is data packet loss in communication due to interference between Wi-Fi and ZigBee wireless technologies. This condition raise retransmission of data packets and so delay, mitigation in delivery ratio and...
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.