Over the last few years, a number of studies and trials have shown that DVB-T offers great potential for portable and mobile reception. Singapore and Shanghai have gone further by launching special services to the cities’ buses and much experience gained, though commercial viability is by no means proven.
Techniques have improved – diversity reception in particular offers a significant improvement in robustness in marginal reception conditions. Now, with the advent of DVB-H, the possibility exists to extend mobile TV reception to handheld devices – personal TVs, PDAs, even cell-phones. Mobile phone operators see DVB-H as a much-needed tool to grow new business lines and overcome the limitations of 3G in mass-market use.
Broadcasters can see the threat to their businesses, if not the opportunities but deciding how to react, where new income streams can be developed and when to invest, is difficult. Manufacturers can see the opportunities for new products but, of course, they are dependent on broadcasters to start new services.
It is in this situation that the DTG established its Mobile TV Applications Group and it was rapidly decided that there was an urgent need for a vade-mecum of all that is going on in this area of technology development. It has been a significant task for the group.
In such a rapidly moving field, keeping the document up-to-date is essential and further editions are planned. The group is promoting mobile TV in the UK and is looking for support for a pooled test bed trial to support technical development and increase operational knowledge.
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