1 Newtec Proprietary – Unrestricted

DVB-S2X

PANEL

SESSION

DVB-S2X improvements

Shaping the Future ofSatellite CommunicationsNewtec Proprietary – Unrestricted2

OVERVIEW

• DVB-S2X performance overview

• Benefits of DVB-S2X• Lower roll-off• Finer granularity• Extended SNR range• Channel bonding

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(source:DVB-S2X white paper)

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1dB 10%

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• Low roll-off allows to increase symbolrate within same bandwidth

• Eg. increase symbol rate from 30 MBaud to 32.8MBaud (10% throughput increase)

• Power loss of 0.4 dB can be fully recovered by applying predistortionat transmitter

• DVB-S2X + predistortion = 10% more channels in DTH service

0.4dB power loss

RO 20% RO 10%

20%

10%

36MHz 36MHz

30Mbaud 32.8Mbaud

Advantage of Lower Roll-off

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Advantage of Finer MODCOD Granularity

• Requested coverage (Egypt)• EIRP footprint definitions• DVB-S2 (27.5Mbaud; 25% RO) specific contours for 99.5% availability• DVB-S2X (33Mbaud, 10%RO) specific contours for 99.5% availabilility

DVB-S2X 16% higher bitrate

44 dBW

46.5 dBW

8PSK 5/6

8PSK 3/4

Or smaller dishes !

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Advantage of Extended SNR range

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Advantage of Extended SNR range

VL-SNR (Very Low Signal-to-Noise Ratio)• DVB-S2 minimal Es/No = -2.5dB• DVB-S2X minimal Es/No = -10dB

• Why?• Link budget• Emission regulations -> adjacent satellites

• How?• Traditional spreading = entire stream is spreaded• DVB-S2X spreading = only frames that require low Es/No

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Advantage of Extended SNR range

Up to 51% efficiency improvement over DVB-S2

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Advantage of Channel Bonding

• HDTV• channel ~ 8Mbps• 7 channels in 1 tpx (60Mbps)

• UHDTV• channel ~ 16 Mbps• 3 channels in 1 tpx (60Mbps)• Bonding:

11 channels in 3 tpx

36MHz60Mbps

36MHz60Mbps

36MHz60Mbps

9 UHDTV channels

11 UHDTV channels(+22%)

Bond 3 TS into 1 large TS

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MORE

INFORMATION

DVB-S2X Calculator

www.newtec.eu/services-training/dvb-s2-calculator

DVB-S2X Whitepaper & Survey

www.newtec.eu/technology/dvb-s2x

DVB-S2X Official Whitepaper

https://www.dvb.org/resources/public/standards/a172_dvb-s2x_highlights_-_white_paper.pdf

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