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Modern Line of Sight (LOS) radio technologies including software defined radios are the fundamental building blocks of the future game-changing High Speed and High Capacity Internet Protocol based Airborne Networks (HSCAN) for the U.S. military. The Air Force currently has multiple ongoing initiatives to develop this future HSCAN. The chief capability amongst many others that the Air Force envisions...
With the rapid development of the Internet, new technologies and applications are emerging. One of the important applications is voice over IP. Satellites are playing an important role to provide VoIP services with their global coverage and on-board processing ability over IP networks. Satellite network environment, generally characterized by large delay and erroneous link, is considered to be unfriendly...
The present work proposes an adaptive solution to provide quality of service in Voice over IP communications. This solution is based on three components that interact inorder to achieve higher quality in voice communication. The first two consist in changing the codec and the transport protocol in real-time during a conversation; the third consists in using a forward error correction mechanism to...
Multimedia applications have been the key driving force in converging fixed, mobile and IP networks. A major hurdle in the realisation of this convergence is obtaining Quality of Service from a heterogeneous, best-effort service network. Interactive voice requires strict bounds on delay, jitter and packet losses, video adds significant bandwidth requirements to the network, while Internet only makes...
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