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.
We investigate a transmission scheduling protocol that exploits direct-sequence spread-spectrum (DSSS) modulation to improve the performance of a mobile, ad hoc network. Since DSSS allows for packet capture in the presence of other nearby transmissions, multiple-access interference is less detrimental to network performance. We design a new transmission scheduling protocol that takes advantage of...
Packet radios for tactical networks must be able to communicate over highly dynamic links that are susceptible to variations in propagation loss, jamming, and multiple-access interference. We describe and evaluate an adaptive scaling metric for soft-decision decoding in direct-sequence spread-spectrum receivers for tactical radio networks. The metric is derived from post-detection signal quality statistics...
We present a new distributed routing protocol for direct-sequence spread-spectrum, mobile ad hoc packet radio networks that contain a mix of nodes with directional antennas and nodes with omnidirectional antennas. Two components of the routing protocol are jointly designed: a new congestion-based link metric that is utilized to identify multiple routes with low levels of congestion and a new forwarding...
This paper explores the interaction between medium access control (MAC) techniques such as selective node silencing with physical-layer adaptive techniques such as spreading adaptation for direct-sequence spread-spectrum packet radio networks. Because this type of network shares a spatial resource, interaction between adaptive mechanisms at each radio must be considered in concert to derive optimal...
Three simple, robust distributed channel-access protocols are presented that result in efficient spatial reuse of traffic channels in a direct-sequence spread-spectrum packet radio network consisting of an arbitrary mix of nodes with directional antennas and nodes with omnidirectional antennas. Each protocol uses an RTS/CTS channel-access control-packet exchange to negotiate the transmission of a...
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.