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.
In this paper, we considere a 5G network in which the requests from users arrive in a sequential manner. A centralized spectrum manager (SM) is responsible for assigning the heterogeneous requests from users to different spectrum fragments. Unlike existing works which assumed the users access without bursty, we consider the more practical settings that the occupation or release of spectrum is stochastic...
Virtualization is one of the key technologies in the evolution of computer networks. Recently, many research institutes, universities and companies are building Cloud computing platforms or networked testbed environment based on virtualization technologies. The reliability of virtual networks has become a hot topic, which has been attracting significant attentions in the network research community...
In this paper, a new miniaturized ultra-wideband (UWB) antenna fed by coplanar waveguide (CPW) is proposed. Gear-shaped structures are employed around the circular disc radiator to impove the current distribution for the antenna miniaturization. Moreover, the gear-shaped structures can produce a wide impedance bandwidth and miniaturization structure. The antenna exhibits a wider bandwidth characteristic...
A compact ultra-wideband (UWB) antenna with dual band-notched characteristics is presented. The proposed antenna consists of a folded fork-shaped radiator and a modified ground plane. The modified ground plane with trapezoid shaped slots on its top edge effectively increases the bandwidth of the proposed antenna. To avoid potential interferences, the arms of the forked-shaped radiator are folded to...
A new compact antenna design with broad bandwidth and quad-sense circular polarization (CP) is presented in this letter. The broadband property is achieved based on a compact monopole structure. Furthermore, the quad-sense CP wave is obtained by a ground plane embedded with a T-shaped slit (TSS) and an annular patch etched by an X-shaped slit (XSS). Good agreement is achieved between the simulation...
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.