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.
Primary user emulation (PUE) attack is a serious security problem in cognitive radio (CR) networks. In PUE attack, attacker transmits an emulated primary signal during a spectrum sensing interval to fool the CR system causing a prohibition in the secondary access on the attacked channel. An attacker is called selfish attacker if it performs the PUE attack for its selfish own purpose. Since it is obligate...
Time interleaved sigma-delta architecture is a potential candidate for high bandwidth analog to digital converters required for reconfigurable, versatile and multistandard receivers. However, this architecture is very sensitive to the unavoidable gain and offset mismatch resulting from the manufacturing process. This paper presents a novel digital calibration method for gain and offset mismatch. This...
Time interleaved sigma-delta analog to digital converter seems to be a potential solution for wide bandwidth analog to digital converter with the lowest hardware complexity compared to other solutions using parallel sigma-delta modulators. Its performance depends on the digital filter and is very sensitive to the channel mismatch. This paper summarizes our work on the digital signal processing for...
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.