The SECOMS broadband satellite network in the multimedia services and multi-environment coverage scenario

Providing multimedia services is one of the major key issues in the world of telecommunications. If mobility and ubiquity is required, the satellite assumes an essential role due to its flexibility and to the possibility of global coverage. The paper briefly describes the SECOMS satellite system aiming at providing multimedia services to ubiquitous and mobile users. This will be fully addressed in a wide range of environments, from the open country to heavily dense cities and built-up areas as well as the indoor environment. The possibility to create a global broadband mobile communication system consisting of multiple system components with different characteristics will be investigated

A geostationary satellite system for mobile multimedia applications using portable, aeronautical and mobile terminals

A geostationary satellite system for mobile multimedia services via portable, aeronautical and mobile terminals was developed within the framework of the Advanced Communications Technology Service (ACTS) programs. The architecture of the system developed under the 'satellite extremely high frequency communications for multimedia mobile services (SECOMS)/ACTS broadband aeronautical terminal experiment' (ABATE) project is presented. The system will be composed of a Ka band system component, and an extremely high frequency band component. The major characteristics of the space segment, the ground control station and the portable, aeronautical and mobile user terminals are outlined