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What is DRM?

Digital Radio Mondiale (DRM) is the only global open digital

radio system which can be used in all frequency bands

(AM and VHF).

DRM system can be used to cover large geographic

areas as well as rural and local markets and when on the

move. A low power local service option is also available.

DRM receivers are simple and easy to use with betteraudio quality and Multimedia applications.

It is a system that complements and works seamlessly

with other digital standards.

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DRM AM and FM bands

DRM above 30 MHz VHF

(Band I, II FM band, III)

DRM below 30 MHz LF, MF, HF

(or LW, MW, SW) the AM bands

30MHZ

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DRM is the Digital Radio standard for all

bands up to and including VHF!

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Originally developed as a digital broadcast standard

for the AM bands using similar techniques developed

for DAB and Digital Terrestrial Television (DVB-T).

DRM30 was standardised in 2001 and ITU recommendation

in 2003 ref "BS. 1514" for DRM in the AM bands.

DRM+ added to the standard 2009 and ITU

recommendation expected 2012 ref BS 1114for DRM

(DRM+ has been recommended by the ITU and is under

vote for worldwide endorsement)

DRM30 Standardised by ETSI (ETSI ES 201, 101, 102).

Background on technology

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DRM Consortium was founded in 1998 to promote the technology

Non-commercial

promotes the adoption of the DRM standard.

Around 100 members

incl. broadcasters, manufacturers, network operators, regulators,

research institutes, etc.

Aims

to promote take-up of the standard worldwide.

The DRM Consortium

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More choice for listeners

Up to 4 programs on 1 frequency

Simulcast analog / digital

Excellent audio quality

No distortion

Stereo and 5.1 surround sound

Multimedia applications

Rich information sent along with audio

Emergency warning and alert feature

All receivers switch, present audio and text information

DRM Offers

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Automatic tuning

by station name, no longer by frequency

re-tunes when leaving coverage area

Good coverage area and robust signal

supporting SFN (single frequency networks)

green and energy efficient

Per-device IPR costs:

One-time licensemanufacturers,

(transmitters and receivers)

No running royalties for broadcasters!

DRM Offers

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Text Messages

Programme accompanying labels (Unicode)

EPG

Electronic Program Guide. Whats up now & next;

Search for programs and schedule recording

Journaline

Text based information service (Unicode),

supporting all classes of receivers,

triggers interactivity and geo-awareness

MOT Slideshow

Programme accompanying images + animation

TPEG / TMC Traffic Information.

DRM Multimedia Applications

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Key benefits of DRM

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Is a fully digital system

Uses OFDM for robustness to errors

Has various modes to suit propagation conditions Provides high quality audio coding using MPEG HE-AAC

Provides multimedia capabilities

Covers all radio broadcast bands from AM to VHF

Is open and non - proprietorial

Is flexible, uses less power than analogue

DRM30 is being rolled out in major countries

(India, Russia etc.)

DRM+ has been successfully tested in the UK,

Italy, Germany, France, Sri Lanka, India, Brazil, Korea

Is complimentary with other digital systems

DRM:

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More information on DRM is available on

www.drm.org

Download the entire system specification of DRM

www.drm.org/uploads/files/broadcast_manual.pdf

To get regular DRM updates subscribe to

www.drm.org/newsletters

For any inquiries or comments, please write to

projectoffice@drm.org

More information is available

in the Broadcasters Guide

http://www.drm.org/http://www.drm.org/uploads/files/broadcast_manual.pdfhttp://www.drm.org/newslettersmailto:projectoffice@drm.orgmailto:projectoffice@drm.orghttp://www.drm.org/newslettershttp://www.drm.org/uploads/files/broadcast_manual.pdfhttp://www.drm.org/