The Digital Video Broadcast -Satellite, Second Generation (DVB-S2) protocol has been developed and standardized as an evolution of the Digital Video Broadcast-Satellite (DVB-S) waveform for European satellite broadcasting by the European Telecommunications Standards Institute (ETSI), and is a candidate for use in US military systems that employ DVB-S. This paper will describe the evolutionary efficiencies of DVB-S2 over DVB-S, increases in performance, capacity, and effectiveness, and draw some conclusions about how military broadcast systems could benefit from this waveform in the future. The Global Broadcast Service, a DVB-based, one-way, highcapacity, Department of Defense (DoD) satellite system that is used for transfer of classified and unclassified video, imagery, and other information, will be presented in a case study to illustrate the potential impacts of migrating a DVB-S based system to the DVB-S2 standard. The paper focuses on the technology and waveform efficiency of the DVB-S2 standard in military satellite communication (MILSATCOM) applications and provides a clear description of the status and authority ofthis evolving standard.
INTRODUCTIONA second-generation standard for Digital Video Broadcast over Satellite (DVB-S), denoted DVB-S, Second Generation (DVB-S2) was ratified by the European Telecommunications Standards Institute (ETSI) in March 2005. DVB-S2 combines DVB-S and DVB-Digital Satellite News Gathering (DVB-DSNG) with advancements in coding technology and interactive services to provide capacity and reliability enhancements for a variety of applications. The enhanced features of the DVB-S2 standard will provide immediate and future capacity and availability benefits that can improve the performance and reduce cost for systems that currently implement DVB standards for media broadcast.
The Global Broadcast Service (GBS) provides a worldwide, high-capacity, one-way transmission of classified and unclassified video, imagery, and other infonnation as required to support joint military forces in garrison, in transit, and in theater. GBS enables real-time information product delivery to the Warjighter by providing satellite resources that are shared based on Combantant Commanders' priorities, operational locations, and platform capabilities of the deployed users. Over the last several years, dissemination of near-real time Unmanned Aerial Vehicle (UAV) video has emerged as a major delivery capability of the Global Broadcast Service architecture. This paper presents the technologies and techniques used for encrypting the broadcast of unclassified and classified video over GBS using commercially available IP-based video content processing and encryption products. Several prototype architectures have been designed to provide type-I encryption (Black Packet) and type-ll encryption (White Packet) for classified and unclassified IP video products sent over the GBS broadcast. Evolutionary approaches for integrating the video encryption prototype architectures into the current ATM-based and future IPbased GBS system architecture are also outlined. 161 CL7803-814O.WO3117.W (c) 2W3 IEEE
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