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 propose a scheme in which a communication relay unmanned aerial vehicle (UAV) estimates the distribution of the terminals and selects the optimal relay position for autonomous maneuvering. In order to accomplish mission success, warfighters on the battlefield must communicate with their commander all the time. Autonomous maneuvering of a relay UAV using the proposed scheme will support...
The growth in wireless communication services together with increasing demand has resulted in the scarcity of spectrum resources. Many researchers have attempted to address the scarcity problem by focusing on spectrum sharing to allow fixed satellite services (FSS) to coexist with other fixed services or other satellite communication systems. However, most secondary users are commercial systems, whose...
In the satellite networks (SATNETs), the random access (RA) schemes are studied to transmit the bursty traffic because the dedicated access (DA) schemes are inefficient to transmit bursty traffic due to overhead caused by control message. The slotted ALOHA (SA), used in the SATNETs, has low throughput owing to the collision between packets. Therefore, studies have been conducted to improve the throughput...
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.