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.
This brief presents a hybrid structure to effectively compute the variable-length Fourier transform by employing the recursive and radix-22 fast algorithm. After applying a hardware-sharing scheme to both fast algorithms, the proposed method not only improves the drawback of higher hardware cost in implementation but also retains the regular and flexible nature of recursive discrete Fourier transform...
As one type of stealthy and hard-to-detect attack, low-rate TCP-targeted DDoS attack can seriously throttle the throughput of normal TCP flows for a long time without being noticed. The Power Spectral Density (PSD) analysis in frequency domain can detect this type of attack accurately. However, computational complexity of PSD analysis makes it impossible for software implementation at high speed network...
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.