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Press Releases
91Èȱ¬ Research centre 60th birthday present: world's first reception of HD pictures over DTT using DVB-T2
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On the 60th birthday of 91Èȱ¬
Kingswood Warren, engineers from 91Èȱ¬ Research & Innovation succeeded in demonstrating a working real-time demodulator
capable of receiving signals compliant to the DVB-T2 standard for
the very first time.
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Following the approval of the standard by the DVB on 26 June and
then the successful test transmissions from Guildford on 27 June, the achievement – on Friday 29 August – is another significant milestone in the
delivery of HD over Freeview.
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This is the first time anywhere in
the world that a live end-to-end DVB-T2 chain has been
demonstrated.
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Justin Mitchell, leader of the DVB-T2 modem development team at
the 91Èȱ¬, said: "Following the approval of DVB-T2 in June and the
launch of test transmissions from Guildford transmitter the next
day, we are delighted that on Kingswood Warren's 60th
anniversary our team has been able to deliver a working
demonstration of a DVB-T2 modulator and demodulator."
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There will be a demonstration of the DVB-T2 modulator and
demodulator on the DVB stand 1.D81 at IBC in Amsterdam in
September 2008.
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This will be accompanied by hourly talks and
conference papers.
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The modulator and demodulator are available for licensing.
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Notes to Editors
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The demonstration consists of:
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 A 36 Mbit/sec multiplex containing three high definition
programmes each coded at 11 Mbit/sec with the latest MPEG-4
encoders
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This is fed into the prototype DVB-T2 modulator which
was developed by R&I, and is currently providing the test
transmissions from Guildford transmitter
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This signal is then received by the prototype DVB-T2
demodulator which was developed by R&I which demodulates the DVB-T2 signal and converts it to an MPEG transport stream
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The transport stream is then fed to an MPEG-4 decoder
which displays the video on a high definition display.
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The demonstration shows several of the new features contained
within the new DVB-T2 specification. These include:
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32K FFT
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1/128 guard interval
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LDPC error correction (64800 size blocks) and BCH error
correction
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Rotated 256-QAM constellations
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Time interleaving
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Extended bandwidth
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The operating mode of the demonstration is: 32K 1/128 256-QAM 3/5
64800.
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SM
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