Dvb-H - the Emerging Standard for Mobile Data Communication

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  • Topic: DVB-T, Digital Video Broadcasting, DVB-H
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DVB-H - The emerging standard for mobile data communication
Michael Komfeld

Abstract - DVB-H (Digital Video Broadcasting Transmission .$stem./& Handheld Terminals) is U new digital hroadcasr standard developed by the international D VB Project which aims at reception o f broadcast conteril with handheld ternrinal devices. Based on the DVB-T standard,/br digital terrestrial Irlevision. the DVB-ll standard takes into uccoiint the special reqiiirernents oJthis class qfdevices. This paper presents an overview ?f the en?erging DVB-H rechno1ogJ and an anal,vsis ofthe per:/urniancechorucreristics of the DVB-H transniission system.

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Index Terms - DVB-H, digital broadcast, terminal, mobile reception. I.

handheld

INTRODUCTION

has expcricnced great progress in recent years. Standards for broadcasting digital content to the end user are available and have been proven in large scale commercial deployments or, at least, extensive trial networks. This development can be observed recently also with regard to the standard for digital terrestrial television, DVB-T (Digital Video Broadcasting Tcrrestrial), which is already in operation in inany countries throughout the world. Currently, the system is rolled out in Germany, the Netherlands, France, and Italy; further countries have announced to start services in the near future. The technology decision on the digital terrestrial television system was in many countries based on very peculiar features of the DVB-T standard, among them the possibility to receive broadcast services also with portable and even mobile devices. Meanwhile the benefits of a powerful terrestrial broadcast system like DVB-T have attracted the intercst of the mobile communication industry. In particular. the ability to reach mobile terminals via a wirclcss link, in conncction with wide geographical coverage and high transmission capacity, are features which make this technology attractive for a completely new environment: transmitting broadband services to mobile radio terminals and comparable pocket-sized portable devices. The international DVB (Digital Vidco Broadcasting) Project has responded to the industry demands by spccifying a new transmission standard: DVB-II (Digital Video Broadcasting - Transmission Sjstern ,/hr llandheld Trrminols) [I]. DVB-H is the latest development within the This work was supported by Panasonic liurupean Laboratories GmbH. Langcn. Germany. M. Komkld is B researcher GI lnstitut her Nachrichtentechnik (Instilute for Communicnlions Tcchnulogy) at Bmunschwcig .Technical University. Gemany (e-mail: komfeld@ifh.inp.tu-bs.dc).

T

HE process of digitizing the traditional broadcast systems

set of DVB transmission standards. Commercial requirements of this system were determined in the first half of 2002 [2]; technology selection and the specification of the technical elements of DVB-H started in autumn 2002 and wcrc finalizcd in Februaly 2004. It is expected that the DVB-H standard will be published by ETSl (European Tclecommunications Standards Institute) as a European Norm before the end of 2004. The DVB-H technology is a spin-off of the DVB-T standard. It is to a large cxtcnt compatible to DVB-T but takes into account the specific properties of the addressed terminals - small, lightweight, portable, battery-powered devices. The terminal equipment is offered a powerful downstrcam channel in addition to the access to a mobile telecommunications network which will be included in most of the terminals anyway. Thcrcfore, DVB-H leads to a link between the classical broadcast systems and the world of cellular radio networks. The broadband, high capacity downstream channel provided by DVB-H will feature a total data rate of several Mbitis and may be used for audio and video streaming applications and inany other kinds of services. The system thereby introduces new ways of distributing services to handheld terminals, offering greatly extended possibilities to contcnt providers...
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