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The Satellite Digital Multimedia Broadcasting (SDMB) System intends to implement a multicast layer over unicast terrestrial 3G UMTS mobile networks.
The system concept is based on a combined satellite and terrestrial repeaters architecture for the delivery of interactive broadcasting/multicasting digital multimedia services to mobile end-users.
The system design will aim to permit indoor penetration by means of dedicated large power GEO satellites providing several beams over Europe.
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'SDMB Radio Phase A' activity will be complemented with parallel activities developed under 'FP6/MAESTRO' Project.
"SDMB Radio Phase A" activity encompasses three main activities:
Two main goals are encompassed within this activity:
This activity will aim to upgrade the SDMB radio network planning tool developed in the frame of the CCN3 'Gap-Filler Network Planning Tool and Gap-Filler architecture/integration in 3GPP RAN equipment' ARTES 1 study. The tool will be updated in order to carry out simulations in an indoor environment. AWE Communications will develop this tool in co-operation with Alcatel Space.
This activity will be focused on satellite segment investigations. Mainly preliminary satellite segment architecture and performance analysis dealing with:
With respect to the radio layer of the SDMB system, there are three key issues:
Concerning the first issue, expected specifications and development carried out during this SDMB Radio Phase A activities will allow SDMB system designers to have access to two main tools ensuring the derivation of major radio performance for any kinds of SDMB radio architecture under various propagation conditions.
For the two latter points, the needs for potential on-board satellite reconfiguration and the delivery of high power per beam to address direct satellite indoor penetration to SDMB-enabled 3GPP handheld terminal are not obvious tasks and need to be addressed in-depth to be able at the end of this project to establish a reference SDMB satellite architecture/performance based on both technical constraints and market needs.
The expected main benefits are:
The Alcatel Space management concept is based on company ground rules, which are applied to all studies, project and programs. These ground rules are based on Alcatel Space successful involvement in a large number of national and international programs.
In the context of projects with limited budget and duration, the Alcatel Space management principles are applied using elementary procedures and tools to facilitate quick understanding and manageability as updating and amendments.
In addition to the technical expertise, the key elements in the successful execution of this project, as will be presented in the present document, are:
This project is built around a strong technical core team having experience and approved expertise in the major domains of interest for the study: Satellite communication systems, mobile communication system, satellites, ground segment, on-board as well as on-ground hardware and software, and satellite communication system operation and exploitation.
Parametric analysis has been performed and leads to the conclusion that a multi-feed solution is well suited to the generation of various linguistic beams. Some main design drivers have been identified:
Two payload configurations have been identified today to address the S-DMB system, namely:
A satellite development plan will be studied for both configurations.