EBU Technical Review

No. 298 (April 2004)

The next edition will be published in mid-July

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Editorial
	Revision of the 1961 Stockholm Plan Philip Laven

Flat-Panel TV Displays
	Maximizing the quality of SDTV in the flat-panel environment EBU/BMC (667 KB)
	The broadcasting environment is changing because of digital technology. Further changes will be needed soon, if flat-panel displays become widely used in home receivers. The quality demands of large-screen flat-panel receivers will call for new care and attention from broadcasters in providing “conventional-quality” television. This article is intended to help broadcasters understand the factors which affect quality in this new world, and it offers suggestions for ways of maximizing the delivered picture quality.

	The changing world of TV displays — CRTs challenged by flat-panel displays Richard Salmon (628 KB)
	The CRT has dominated the display industry for 100 years. Its reign is coming to an end, not tomorrow, but in the not-too-distant future. This article provides an overview of the progress being made by flat-panel displays in chipping away at the TV market. Plasma display technology has been developing fast but, watch out – here comes the LCD juggernaut, sweeping all before it … There are other technologies to watch as well, and there could still be more surprises round the corner. Beware; there’s some hype about, but there’s also some well-founded market research to guide the way.

Digital Audio Broadcasting (DAB)
	Frequency economy – new convergence Kjell Engström (424 KB)
	Frequency economy in terms of economic *efficiency* leads to quite different conclusions on how to use the broadcast spectrum than frequency economy in terms of spectrum *efficiency*. This article discusses some aspects of frequency economy and convergence, as seen from a radio broadcaster’s perspective.

Spectrum Planning
	Accurate coverage prediction and optimization — for digital broadcasting Bachir Belloul and Simon Saunders (672 KB)
	Digital broadcasting services (e.g. DVB-T and DAB) require higher prediction accuracy than traditional analogue networks, because digital services are planned with tighter margins on the signal strength and interference. This article describes new prediction models, created by the authors, that offer higher accuracy and which can be used to optimize digital broadcasting networks.

DVB-T
	DVB-T — C/N values for portable single and diversity reception Raul Schramm (795 KB)
	It has been shown that the minimum C/N values for good-quality portable DVB-T reception in a static Rayleigh channel – as given in the ETSI DVB-T standard – are too low. With this in mind, the IRT carried out extensive laboratory measurements on DVB-T reception (both single and diversity) at 610 MHz – using a number of different modulation schemes and code rates. Resulting from these measurements, a new set of C/N values for portable urban reception is proposed.

	DVB-T — a fresh look at single and diversity receivers for mobile and portable reception Yannick Lévy (1030 KB)
	With the emerging threat from broadband television (xDSL-TV), broadcasters must use DVB-T for what it is really good at – portability and mobility. This article shows how diversity reception can significantly improve DVB-T reception on the move and on portable TV receivers.

EBU Workshop
	Broadcast and Telecom synergies in the 21st century Franc Kozamernik

Published quarterly by the European Broadcasting Union ISSN: 1609-1469

Editeur Responsable:	Philip Laven
Editor-in-Chief:	Mike Meyer
French Editor:	Eric Piraux

Reproduction of articles in EBU Technical Review is authorized only with the prior consent of the Editor-in-Chief.
The responsibility for views expressed in articles published in EBU Technical Review rests solely with the authors.