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 spectral handoff is important in cognitive wireless networks to ensure an adequate quality of service and performance for secondary user communications. This work presents a multivariable algorithm for dynamic channel selection used in cognitive wireless networks. The channel selection is based on the fuzzy analytical hierarchical process (FAHP) method. The selected criteria for choosing the best...
Current proposals for Cognitive Radio Networks (CRN) are created mainly to solve dynamic spectrum access where several cognitive devices are searching for free frequency bands, i.e. ‘white spaces’. This is in order to communicate without or with minimum interference to primary users (PU). Cognitive Radio devices must coordinate the communication with peers when they have to change their communication...
The huge computing power available in some graphic cards may be used to significantly speedup scientific computing compared with common parallel clusters. The low price and virtually ubiquitous Graphics Processing Units (GPU), in conjunction with C style parallel programming tools, like CUDA (Compute Unified Device Architecture), allow the programmers to exploit their fine grain parallelism and multithreading...
Spectrum Sensing and Spectrum Decision making are the main functions that cognitive radios have to perform in order to select the `best available band' for the establishment of a wireless communication. We model the Spectrum Decision making functionality with multiple attributes and we propose a novel use of the Analytic Hierarchy Process to optimally select available bands from a finite set of options...
An analysis of the sending rate of TCP control over Terabit per second rate links illustrates how future optical network characteristics, such as higher bitrates, network congestion, and larger data loads, would affect performance. We have implemented a model to allow increased sending rate for TCP. It is shown that even if the network bitrate is higher and the sending rate of TCP is scaled up, the...
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.