Satellite digital radio
Satellite digital radio (short: SDR ) is an activity of the standards organization ETSI .
It concerns a type of broadcasting system in which satellites transmit directly to mobile and portable receivers, supplemented by terrestrial transmitters. The transmitted content includes radio , mobile television , text and graphic information as well as offline content. The satellite component allows an inexpensive area-wide coverage, while the terrestrial component improves the reception quality in dense buildings.
The ETSI SDR standard allows the interoperable implementation of parts of such networks. So far, the functionality of the physical layer of the air interface has been standardized. This enables demodulators to be implemented as integrated circuits . The following parts of the ETSI EN 302 550 standard describe the physical layer:
- ETSI EN 302 550-1-1
- Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems; Part 1: Physical Layer of the Radio Interface; Sub-Part 1: Outer Physical Layer
- ETSI EN 302 550-1-2
- Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems; Part 1: Physical Layer of the Radio Interface; Sub-Part 2: Inner Physical Layer Single Carrier Modulation
- ETSI EN 302 550-1-3
- Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems; Part 1: Physical Layer of the Radio Interface; Sub-Part 3: Inner Physical Layer Multi Carrier Modulation
These three parts replace the previous SDR standards ETSI TS 102 550, ETSI TS 102 551-1 and ETSI TS 102 551-2.
The following document contains guidelines for using the standards:
- ETSI TR 102 604
- Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) Systems; Guidelines for the use of the physical layer standards
The following document describes the facts and assumptions that form the basis for the above standards:
- ETSI TR 102 525
- Satellite Earth Stations and Systems (SES); Satellite Digital Radio (SDR) service; Functionalities, architecture and technologies
- Due to formalities, the English word "may" is used in place of "shall" in this document.
The company WorldSpace and Ondas have announced that they are the SDR standards will apply in their networks.
The DVB project has drawn up specifications under the name DVB-SH , which are to be used in a similar type of broadcasting system as ETSI SDR.
The term ESDR is increasingly used instead of the term ETSI SDR.
literature
- Donald W. Connelly: Digital Radio Production. Third Edition, Waveland Press Inc, Long Grove 2017, ISBN 978-1-4786-3418-8 .
- Lee Henson: Satellite Radio. Little Known Secrets That Will Blow You Away, 2016, ISBN 978-1-3298-1358-8 .
- Grigorios Kalivas: Digital Radio System Design. John Wiley & Sons Ltd, Chichester 2009, ISBN 978-0-4708-4709-1 .
- Lynne Schafer Gross: Telecommunications. 10th Edition, CTI Reviews, 2014, ISBN 978-1-4672-7126-4 .
- Annabel Z. Dodd: The Essential Guide to Telecommunications. Prentice Hall PTR, Saddle River 2002, ISBN 0-13-064907-4 .