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Beyond DVB-S2: Next-Gen Satellite Transmission Standards
The document discusses advancements in satellite broadcasting technology, particularly through the evolution of the DVB-S2 standard, which has led to significant operational cost reductions. Newtec's Clean Channel Technology™ enhances satellite capacity efficiency and improves coexistence between carriers on shared transponders. Additionally, the introduction of a Carrier Identifier (CID) aims to address the growing issue of radio frequency interference (RFI) by enabling rapid identification of interference sources.
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Beyond DVB-S2: Next-Gen Satellite Transmission Standards
- 1.
- 2. Drivers for change:Beyond DVB-S2 Moore’s law: Technology can now do more Cost reductions for transmission Needs to address RF Inteference 2
- 3. Newtec Contributes toeven better Standards Standards are important The DVB (Digital Video Broadcast) standard protects end-users from vendor lock-in and provides freedom of choice. Evolution is good for our industry DVB evolutions like DVB-S to DVB-S2 provided 20-30% OPEX reduction for broadcasters. Newtec contributes to a more efficient DVB-S2 Newtec contributes to DVB to establish an evolution that further optimizes satellite capacity usage Newtec actively supports standardization of Carrier ID (CID) 3
- 4. Clean Channel Technology™ Smaller Roll-Off • Advanced filter technology provides 5% or 10% or 15% Roll-Off DVB-S2 Roll-Off to 5% or 10% or 15% • Carrier Spacing as small as 1,05 times their symbol rates results in immediate BW gain up to 15% RO 20% RO 5% • For operations with single carrier, multiple carriers and shared RO 20% transponders RO 5% • Future Proof for upcoming DVB standards! • Available on Newtec’s existing and new M6100 platforms! 4
- 5. Clean Channel Technology™in Shared Transponder Shared Transponders Carrier Spacing Carrier Spacing with Clean without Clean Channel Technology™ Channel Spacing with Clean Carrier Technology ™ Channel Technology™ Carriers from another operator • Can easily co-exist with carriers from other Carriers from another operator providers in a same Rented Capacity transponder • Clean Channel Rented Capacity Transponder Transponder CarrierSpacing with Clean Carrier Spacing with Channel Channel Clean Technology™ Carrier Spacing with Clean Technology ™ Channel Technology™ Carriers from another Technology can only be Carriers from another operator operator applied to allocated Gain Gain carriers • No interference on neighbour carriers Rented Capacity Transponder Transponder 5
- 6. Up to 10%gain with recent and existing set-top’s* +10%* Traditional DTH Full BW use Full BW use @ 20% roll-off @ 20% roll-off @15% roll-off RO 20% RO 15% 8PSK 5/6 with with 72 Mbps DVB-S2 Roll-Off to 5% or 10% RO 20% RO 5% RO 20% RO 5% Equalink® Equalink® CCTTM Trp allocation plan (MHz) 40 40 40 Trp BW -1dB (MHz) 36 36 36 Roll-Off 20% 20% 15% Actual Symbol Rate (Mbaud) 30 33,33 34,78 Symbol rate gain (%) 11% 16% Tx Power reduction (dB) -0,46 -0,64 Net Bitrate Gain (%) 7% 10% Net Bitrate Gain (Mbps) 72 5 7 Additional MPEG-2 SD channels (3,5Mbps) 1 2 Additional H.264 HD channels (5Mbps) 1 1 *Subject to test with specific receiver models - typical improvements 6
- 7. Major Modulation Evolution Shannon Limit Newtec Sx (current state) DVB-S2 Spectral Efficiency DVB-S (bps/Hz) C/N 7
- 8. Why is Interferenceincreasing? Analysis supplied by GVF…
- 9. …the Stats! Data suppliedby Intelsat… 96% (of 47%) Unintentional 4% (of 47%) Pirates/Jamming Note: In MENA, ‘deliberate’ is considerably higher (ask Al Jazeera!)
- 10.
- 11. Different Types ofInterference… Different Responses Needed… 11
- 12. Ready to combatCarrier Interference ? Radio Frequency Interference (RFI) ... high on the agenda of satellite operators! • RFI is the largest single issue that impacts QoS for satellite operators and their customers • Sources of RFI are operational mistakes in modulator configuration, wrong polarization, carrier saturation, pointing to wrong satellite, failing equipement ... or intended interference • In addition to current RFI counter measures such as – Training operational staff on best practices – Automated terminal configuration (e.g. Newtec´s MENOS) – Satellite pointing technology such as Newtec´s Point and Play® there is a need to embed a carrier identifier (CID) into the carrier itself to allow a robust yet quick pinpointing of the source of the interference 12
- 13. Ready to combatCarrier Interference ? …Newtec is ! M6100 Carrier ID setup How Does it work ? • An ID is injected by the modulator into the carrier (CID) containing : • Fixed identification of the source • Vendor brand, MAC, serial n°, etc ... • User configurable data • GPS coordinates, carrier name, contact, etc... • In case of RFI, the satellite operator can read this CID and can therefore quickly identify the source and contact information of the RFI originator, using a shared repository of CID´s • Initially, a NIT version of carrier ID will be used by operators • It is anticipated that a DVB standard will likely be available end of 2012 with a more robust RF CID standard 13
- 14. Questions? Thank you foryour attention
Editor's Notes
- #5 DSU: 30.000 Mbaud @ 20% = 36 MHz = 72.9 Mbps @ 8PSK 5/634.286 Mbaud @ 5% = 36 MHz = 83.3 Mbps @ 8PSK 5/6Assume available resources at satellite is 85 dB.HzFor 30.000 Mbaud C/N = 85 – 10 log(30.000E6) = 10.23 dB achievableFor 34.286 Mbaud C/N = 85 – 10 log(34.286E6) = 9.65 dB achievable Conclusion: in a full saturated transponder, the available power remains the same, so when symbolrate is increased, the power is spread over a larger bandwidth.This will effectively decrease the achievable C/N on the other hand, the throughput will increase.So for each case at hand the balance will need to be made.The same applies in multi-carrier operation. When a given bandwidth is leased, determined as the symbolrate multiplied with the channel spacing (which isn’t necessarily the same as the roll-off) , this corresponds to a given PEB used. In case the symbolrate is increased (by keeping the same leased bandwidth and reducing the symbolrate), more PEB will be used. This will work fine for links that were previously underusing the available power. For balanced links (power versus bandwidth), the cost for the link will increase because PEB is increased.