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.
The objective of this paper is to review state‐of‐the‐art techniques of beamforming in mobile satellite systems and evaluate the potential benefits/drawbacks of on‐ground beamforming compared with on‐board beamforming approach. The paper also provides a short analysis of beamforming error sources in on‐ground beamforming such as propagation effects at feeder link level, on‐board degradations at payload...
The Scalable Video Coding (SVC) is an extension of H.264/AVC offering temporal, spatial, and quality scalability. Compared to the non-scalable profile of H.264/AVC, SVC allows layered transmission of video data. Variable Coding and Modulation (VCM) based DVB-S2 Video Broadcasting Systems enables effective selection of modulation modes and FEC code-rates offering differentiated error protection. In...
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.