New terrestrial broadcast TV networks are being rolled out across the world and network operators and regulators are looking closely at their efficiency and performance. For them, the pressure is on to review the existing uses of the radio spectrum to see if there are better ways of achieving the same coverage using new techniques. In particular, the latest second-generation standards for the coding and modulation of television signals. This session will look in detail at some of the most innovative proposals that are being developed and trialled.
‘Time Frequency Slicing’ is a technique that achieves increased frequency diversity by allowing each service to be transmitted by frequency hopping over several RF channels – potentially spreading the service over hundreds of MHz. Theoretical results indicate improved robustness and a spectral efficiency gain of around 50%.
Another frequency-agile approach under investigation in several countries is based on the use of ‘White Space Devices’ (WSD) which take advantage of locally unused spectrum within the UHF broadcast TV band. A number of WSD technologies are now emerging and operating scenarios are being assessed for both rural and suburban environments.
The important issues for these techniques are the protection of existing primary broadcast services from interference and the need for a geo-location database of permitted frequencies and powers.
Join us for breakfast at 07:45 sponsored by the National Broadcasting Commission of Thailand and session chair, Col. Dr Natee Sukonrat. This session will be a great opportunity to network, share knowledge, gain understanding and benefit from each others’ experiences. Following the buffet breakfast, this session will explore the background to these new broadcast technologies and provide unique insights into their potential impact. The session will close with a Q&A session from the floor.
This session's supporting paper(s):
J.J. Giménez, D. Gómez-Barquero, S. Bergsmark and E. Stare. Universitat Politècnica de València, Spain and Teracom AB, Sweden.“TIME FREQUENCY SLICING IN THE NEXT GENERATION MOBILE BROADCASTING STANDARD DVB-NGH”