Digital Terrestria TV
NTL has pioneered the development of MPEG-2
video compression systems and is now a leading player in the introduction of
digital terrestrial television for the UK. We were first to broadcast
multi-channel digital TV terrestrially in February 1995 and since then work has
progressed steadily on a 2000-carrier system working to the European
specification of the Digital Video Broadcasting (DVB) group.
NTL has switched on its first DVB compliant Digital Terrestrial Television transmitter serving the London area. This is the first of many to be built in readiness for the introduction of public services in early 1998.
NTL's London digital transmission facility has been built as a blueprint for the operational systems which will be needed in early 1998. This mini-network is capable of reaching 10 million homes, and will facilitate early test transmissions for manufacturers, broadcasters and consumers. During the tests these transmissions will enable field measurements to be carried out to verify coverage predictions of the joint NTL/ITC/BBC frequency plan. The operation of indoor set-top antennas will also be evaluated.
NTL has given many over-air demonstrations of its OFDM digital transmission capabilities since 1992. The RF signals now being radiated comply with the 2K option of the DVB-T specification and can be configured to deliver any permissible combinations of the modulation mode, guard interval and error protection. The London transmission facility operates at the full power of 10 kW E.R.P. and includes built-in automatic redundancy switching, monitoring and telemetry.
NTL is internationally renowned for its expertise
in the design, fast roll-out and operation of major broadcast transmission
networks. The new UK Channel 5 network of 33 transmitters and digital satellite
distribution was completed in under a year. NTL has pioneered the development
of OFDM and MPEG-2 compression systems and has played a leading role in the
establishment of European standards. Internationally we have a strong track
record for studio and broadcast network design, installation, project
management and consultancy.
This expertise and capability enables NTL to offer end-to-end digital broadcasting solutions including network build and operation, frequency planning, programme distribution, digital compression and multiplexing, subscriber management and conditional access.
Digital Terrestrial TV offers exciting and commercially attractive
opportunities to broadcasters in the UK and internationally for expanding and
developing their business. NTL with its breadth of expertise and capability in
digital broadcasting intends to play a major role in developing and
implementing the needs of broadcasters in this market.
As we approach the start of the digital era, NTL recognises that the needs and aspirations of broadcasters old and new will be many and varied. We hope we can play a positive role in turning these aspirations into reality.
For further information please e-mail
us at email@example.com
or telephone +44 1962 822281
ęCopyright 1997 National Transcommunications Ltd.