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.
In the distributed cognitive radio networks, users possess the ability to detect spectrum holes to communicate with others which make the traditional routing protocol ineffective. The fundamental challenges here are the interruptions which occur when primary users emerge and how to exchange messages to maintain the route in this situation. To deal with the problem, we propose a novel on-demand routing...
The design of opportunistic spectrum access (OSA) policy is a key technique of cognitive radio. In this paper, we consider a scenario that the secondary user can't sense full spectrum due to hardware constraints. In order to get higher transmission rate, we allow the secondary user sense multiple channels in a slot and group them together by channel bonding technique after detecting consecutive idle...
In the distributed Cognitive Radio Networks, routing should consider how to dynamically select frequency band for either per flow throughput guarantee or global spectrum utilization. Since different second users may sense different spectrum availability, efficiently sharing this information in the dynamic spectrum environment still remains challenging, however, collaborative route and spectrum selection...
In this paper, in order to improve the sensing performance which can be severely degraded when the sensing observations are forwarded to fusion center through fading channels, we apply the clustering method into cooperative spectrum sensing by forming all the secondary users into a few clusters and selecting the most favorable user in each cluster to report sensing results to the data fusion center...
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.