Scott Y. Seidel

Autonomous dynamic spectrum access system behavior and performance

An autonomous dynamic spectrum access (ADSA) system overcomes the spectrum scarcity caused by the current command and control spectrum allocation paradigm, by enabling multiple uncoordinated groups of radios to access spectrum on an as-needed basis without causing mutual harmful interference. This paper describes the behavior and performance of such a system. Adaptation is driven by continual monitoring of local spectrum utilization within the bounds specified by regulatory policy. Nodes adjust their RF signal-in-space bandwidth to capture available spectrum while leaving adequate spectrum available for other spectrum users. The dynamic spectrum access technology is widely applicable to many forms of wireless communication. It will dramatically increase spectrum availability for both military and commercial applications, and should be considered an early step towards creating a truly cognitive radio [(2003), Mitola, J, III (1999)]

Manet gateways: radio interoperability via the internet, not the radio

The objective of the DARPA Network Centric Radio System Program was to design, develop, integrate, and demonstrate the enabling communication technologies and system capabilities required to enable network-centric warfare. NCRS is a first-generation mobile ad hoc network designed to enable ground and airborne vehicle based on-the-move and on-the-halt network-centric connectivity using both IP and non-IP enabled devices. It demonstrated a gateway architecture that can offer radio interoperability among various current, future, coalition, and first responder communications radios via the network, not the radio. This capability illustrated a new dimension for communications interoperability for radio systems developers.

DARPA NetCentric radio demonstration

The objective of the DARPA Network Centric Radio System1 (NCRS) Program was to design, develop, integrate, and demonstrate the enabling communication technologies and system capabilities required to enable network centric warfare. NCRS is a First Generation Mobile, Ad Hoc Network (MANET) designed to enable ground and airborne vehicle based on-the-move and on-the-halt network centric connectivity. It demonstrated a gateway architecture that offers interoperability among various current, future, coalition and first responder communications radios, via the network, not the radio. This capability illustrated a new dimension for military communications interoperability.