ETSI Satellite Digital Radio

Satellite Digital Radio (abbreviated SDR) is an activity of the standardization body ETSI.

It relates to a type of radio systems in which to mobile satellite directly and send portable receivers and are supplemented by terrestrial transmitters. The transmitted contents include radio, mobile TV, text and graphic information, including offline content. The satellite component allows low-cost full coverage, while the terrestrial component improves the quality of reception in dense development.

The SDR- standard ETSI allows the interoperable implementation of parts of such networks. Previously, the functionality of the physical layer of the air interface has been standardized. This enables the implementation of demodulators as integrated circuits. The following parts of the standard ETSI EN 302 550 describe the physical layer:

• ETSI EN 302 550-1-1

• ETSI EN 302 550-1-2

• ETSI EN 302 550-1-3

These three parts replace the previous SDR- ETSI TS 102 550 ETSI TS 102551-1 and ETSI TS 102551-2.

The following document contains guidelines for the use of the standards:

• ETSI TR 102 604

• ETSI TR 102 525

The company WorldSpace and Ondas have announced that they will apply the SDR standards in their networks.

The DVB Project has under the name of DVB -SH created specifications that will be applied in a similar type of broadcasting systems application such as ETSI SDR.

Instead of the name ETSI SDR ESDR the term is used increasingly.