Using DVB-S2X and Annex M to implement low-cost Phase 4B Earth Station Terminals

摘要

The AMSAT Phase 4 Ground Team has been evaluating DVB-S2, Generic Stream Encapsulation (GSE) and DVB-S2X extensions for use in the space to ground segment of the AMSAT Phase 4B Geosynchronous Satellite transponder. DVB-S2X provides extensions to an already complicated standard. However, use of the optional Annex M extension has the potential to actually simplify and reduce the computational complexity of Earth Terminals. This could potentially provide a significant reduction in the cost of low-end terminals in low manufacturing volumes with a resulting expansion of the population of Phase 4B users. This paper explores the DVB-S2X protocols and Annex M and how various features of these standards might be used to reduce the complexity of Phase 4B Earth Stations in the lOMhz bandwidths anticipated for the Phase 4B downlink.