Nippon TV Successfully
Carries out Worlds First
DVB-S2X 256APSK
Transmission
2 March 2015
The world’s first
DVB-S2X 256APSK
satellite transmission
has been successfully
completed by Japan-based
Nippon Television
Network Corporation
(Nippon TV) with Newtec
technology. Performed on
November 1, 2014, the
trial campaign saw
Nippon TV transmit 5MHz
bandwidth with a 256APSK
carrier from a Satellite
News Gathering (SNG)
truck to the
Superbird-B2 satellite.
The transmission was
successfully received at
the headquarters of
Nippon TV in Minato,
Tokyo.
The test follows
Nippon TV’s interest in
the new DVB-S2X
modulation standard for
its next-generation
video network over
Japan. Considering the
benefit of the 5% Roll
Off (RO) technology that
saves satellite
bandwidth, Nippon TV
wanted to establish the
feasibility of using
this higher modulation
and the associated
challenges. Putting the
DVB-S2X 256APSK to the
test, the team used
Newtec's MDM6100
Broadcast Satellite
Modem and 5MHZ bandwidth
on a JSAT transponder.
This is the same amount
of bandwidth required
for Nippon TV's
next-generation video
network. 25Mbps was
transmitted from the SNG
using a 1.4m antenna,
which was received on a
5m dish at the TV
station.
"Knowing that
DVB-S2X can reduce
satellite bandwidth with
its 5% roll off
technology, we wanted to
test DVB-S2X 256APSK
modulation on an actual
satellite because it
requires higher quality
and link margin, which
could have been a
challenge for us.
Following the trial, I
am confident of the
Superbird-B2 satellite’s
ability to accommodate
this modulation,"
said Mr. Tetsuo Makino,
Director of Engineering
Technical Strategy Group
at Nippon TV.
For the trial, Nippon
TV teamed up with MOUBIC
and JSAT. MOUBIC is a
Satcom and broadcast
equipment provider in
Japan and a long term
Newtec partner. Newtec
is a specialist in
satellite communications
system design and
integration, as well as
one of the main driving
forces behind the
DVB-S2X standard.
"The new DVB
extension, called
DVB-S2X, with improved
efficiency, will enable
the satellite industry
to increase
profitability and allow
for business growth
throughout all
applications, from
high-speed IP to
broadcast," said
Dirk Breynaert, Newtec’s
CTO and Co-founder.
DVB-S2X boosts the
satellite link up to 20%
in Direct-To-Home (DTH)
networks and up to 51%
in other professional
applications compared to
DVB-S2. It does this
through a combination of
innovative technologies,
including lower roll
offs, advanced filter
technologies, Modulation
and Coding (MODCOD) and
Forward Error Correction
(FEC) upgrades, wideband
implementation and
additional standard
scrambling sequences. It
is available on all
Newtec products as a
software upgrade.
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