DVB-S2X Improvements

DVB-S2X performance overview

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

1. DVB-S2X Panel session DVB-S2X improvements

2. overview DVB-S2X performance overview Benefits of DVB-S2X Lower roll-off Finer granularity Extended SNR range Channel bonding

3. (source: DVB-S2X white paper)

4. 1dB 10%

5. 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 predistortion at 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

6. 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 48 dBW 44 dBW 46.5 dBW 8PSK 5/6 8PSK 3/4 8PSK 13/18 8PSK 3/4 16APSK 26/45 8PSK 25/36 8PSK 23/36 Or smaller dishes !

7. Advantage of Extended SNR range

8. 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

9. Advantage of Extended SNR range Up to 51% efficiency improvement over DVB-S2

10. 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 36MHz 60Mbps 36MHz 60Mbps 36MHz 60Mbps 9 UHDTV channels 11 UHDTV channels (+22%) Bond 3 TS into 1 large TS

11. 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