In ENGINES work package two (WP2), individual system architecture components are studied, and the results from these studies are forwarded to standardization work (DVB-T2 Lite, DVB-NGH). Additionally there is work on overall architectures, especially issues not covered by direct standardization that are novel access technologies and end-to-end system integration.
WP2 can be further divided into three main directions: system concepts and receiver algorithms for DVB-NGH, novel access technologies such as hybrid networks and cognitive radios and end-to-end system integration.
This deliverable collects the system architectural work performed by ENGINES partners for the DVB-T2 Lite and DVB-NGH. The topics considered here are:
System Architecture Proposals for DVB-NGH Integrating MIMO Schemes
The advanced component techniques that have been devised or refined in order to solve fundamental issues for reaching required capacity and performance for DVB-NGH are presented in deliverable 2.3. “Report on advanced concepts for DVB-NGH”.
Most of the early work performed towards the definition of the new DVB-NGH system was dedicated to the definition of an overall architecture for the system. All the devised architectures assume that DVB-NGH services should be deployable on an existing DVB-T2 network infrastructure. In addition to terrestrial network, an optional satellite component for the DVB-NGH is considered. In this deliverable, the architectural studies and proposals made by ENGINES partners are presented.
The T2-4-NGH proposal, described in Chapter 2 is mainly a subset of DVB-T2, suited for mobile reception with an optional satellite component, inspired from the DVB-S2  or DVB-SH  standards. This proposal was partly used for the definition of the so-called ”T2-Lite” profile of DVB-T2, intended primarily for reception of broadcast services in mobile environments (see Chapter 3).
The “Flexible Time Division Multiplex based on DVB-T2” system concept described in Chapter 4 takes advantage of the Future Frame Extension (FEF) concept embedded in DVB-T2 to alternate transmissions of several type of waveforms, each optimised for a specific population of receivers. A set of frames is designed to serve efficiently several network structures (broadcast, wireless broadband, mobile telecommunications networks).
Based on the DVB-T2 structure, two particular NGH frame structures have been studied. Chapter 7 deals with embedding a 3GPP E-MBMS frame in a DVB-T2 FEF, which could be seen as the cornerstone of the convergence of the E-MBMS and NGH mobile broadcasting standards. Section 8 presents a super frame structure, compliant with both terrestrial and satellite requirements, and based on a flexible position of NGH frames to address terrestrial mixed T2/NGH transmission and NGH-only transmission.
Hybrid satellite-terrestrial network scenarios for DVB-NGH are presented in Chapter 9. Frame structures envisaged for hybrid networks are considered. Also the concepts of SFN and MFN hybrid network and their constraints are described. Finally, in Chapter 10 MIMO network architectures for DVB-NGH are presented in detail.