At the IBC2016 conference (8-12 Sept) Erik Stare from Teracom presented the Best-Conference-Paper-Award-winning paper about a new system concept for DTT called WiB. The presentation took place as part of the conference session “Recent advances in terrestrial and mobile video broadcasting”.

Erik has developed the WiB concept and written the paper together with his two co-authors: Dr. Jordi J. Giménez from University of Valencia and Dr. Peter Klenner from Panasonic Europe Ltd. They received together the prestigious conference award later the same day in connection with the IBC awards ceremony.

Link to paper
Link to presentation slides
Link to award ceremony video

What is WiB?

WiB is a new system concept for Digital Terrestrial Television (DTT), where potentially all UHF frequencies are used on all transmitter sites. Interference, especially from neighbouring transmitters operating on the same frequency and transmitting different information, is handled by a combination of a robust transmission mode, directional receiving antenna and interference cancellation methods.

With this approach DTT may be transmitted as a single wideband signal, covering potentially the entire UHF band, from a single wideband transmitter per TX site. Thanks to a higher spectrum utilisation the approach allows for a dramatic reduction in fundamental power/cost and about 40-60% capacity increase for the same coverage as with current DTT. High speed mobile reception as well as fine granularity local services would also be supported, without loss of capacity.

WiB may also be further developed in a number of different ways, e.g. doubling the capacity by using both polarisations simultaneously on the same frequency (cross-polar MIMO), backward-compatible with existing receiving antennas, or adding a second, WiB-mobile, Layer Division Multiplexing (LDM) layer within the same spectrum, either as mobile broadcast or as mobile telecom (unicast).

In the latter case broadcast and mobile telecom could both share the UHF band in such a way that both would use all spectrum, but broadcast (WiB-DTT) and mobile telecom (WiB-Mobile) would be transmitted in LDM in such a way that would allow the two signals to be separated in the receiver using interference cancellation methods.

List of WiB advantages

  • Increased spectral efficiency (capacity)
    –    Also considering ”white space” use
  • Reduced network cost
    –    Single wideband transmitter
    –    No combiners (or even RF feeders)
    –    >90% reduced power consumption
  • Unconstrained use of local services without additional cost or performance loss
  • Close-to-ideal statmux gain (video coding)
    –    also for “many” U-HDTV services
  • High speed mobile reception of all transmitted services
    –    without dedicated signals for mobiles
  • Commercially acceptable introduction/migration scenarios
    –    WiB-DTT (SISO)
    –    WiB-DTT (MIMO)
    –    WiB-Mobile
  • Converged solution with mobile telecom
    –    Can be seen as a win-win solution for both broadcast and mobile telecom players allowing both sides to use the full spectrum
    –    5G New Radio candidate?

Frequently Asked Questions (FAQ) about WiB

What does WiB stand for? What are the main differences between WiB and existing DTT? How much could WiB increase the total capacity per transmitter site in the UHF band?