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 letter considers the problem of FRESH filter-based spectrum sensing of cyclostationary signals. In such a system, the cyclic frequency of the signal of interest known at the spectrum sensor may differ from its true value causing an offset. The effect of this offset on the FRESH filter performance is derived and a method to compensate for this is proposed. It is then shown via simulations that...
In this paper, the problem of cooperative spectrum sensing of cyclostationary signals for cognitive radios is considered. It has been shown that the MMSE optimal filters for cyclostationary signals involve one or more frequency shift branches and are called FRESH (FREquency SHift) filters. Adaptive FRESH filters have been used in the past to enhance cyclostationary signals so as to ease their detection...
In this paper, we consider the problem of spectrum sensing in cognitive radio for OFDM signals using correlated pilots. The pilot correlation is exploited to detect the presence of a primary signal based on its cyclostationary properties. The performance of such detector relies on the exact value of the cyclostationary frequency of the signal of interest. However, in actual cases an offset may be...
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.