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.
Pooling mobile devices in vicinity as a cooperative community offers an opportunity to enable multipath transmission for multi-homed mobile devices, even when there is no multiple access coverage. Nonetheless, the available bandwidth provided by relays can be highly varying due to a range of factors such as wireless channel fading and dynamic local traffic load at relays. As a result, it is challenging...
In this paper, we propose a combined bulk and per-tone transmission scheme for distributed cooperative decode-and-forward OFDM system. A subset L out of N available relay nodes is first chosen and then per-tone selection is performed within the subset. An approximated expression for the outage probability of proposed scheme is given. Monte Carlo simulations validate our analysis and show the performance...
Considering n nodes performing random access using ALOHA with s slots, we study the probability that there occurs a non-colliding message in the first non-empty slot. If each node transmits with probability p in each slot and the number of slots is sufficiently large, a non-colliding first message occurs with probability Phi = 1-np/2 for large n and small np. If the number of slots is limited, the...
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.