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 paper aims to find interested association rules, known as data mining technique, out of the dataset of downloading logs by focusing on the coordinated activity among downloading servers. The result of the analysis shows the association rules of the downloading servers and that of the malwares.
Multiple antenna systems are promising architectures for overcoming the effects of multi-path interference and increasing the spectrum efficiency. Capacity increases promised by MIMO systems mostly depend on the spatial correlation properties of the radio channels. This letter investigates the performance of multiple-input and multiple-output (MIMO) antenna arrays systems including MIMO space-time...
Multiple antenna systems are promising architectures for overcoming the effects of multi-path interference and increasing the spectrum efficiency. Capacity increases promised by MIMO systems mostly depend on the spatial correlation properties of the radio channels. This paper investigates the performance of multiple-input and multiple-output (MIMO) antenna arrays systems including MIMO space-time...
This paper describes a modulation scheme for TH- UWB systems using pulse position modulated (PPM). For this scheme, a set of overlapped and orthogonal signals are transmitted simultaneously in the same time slot resulting in a composite pulse. And the signals have been discussed analytically for AWGN and multi-path channels. The proposed scheme can achieve an excellent BER performance by using one...
Multiple antenna arrays are promising architectures for overcoming the effects of multipath interference and increasing the spectrum efficiency. In order to be able to investigate these systems, in this article, we derive generalized spatial correlation equations of a circular antenna array for two types of angular energy distributions: a Gaussian angle distribution, and uniform angular distribution...
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.