In this webinar presentation, presented on May 8, 2012, Steven Soenens from Newtec talked about :
Delivering uptime and quality of service:
- built in MPEG Transport Steam Analyzer
- Carrier ID insertion in the Network Information Table (NIT)
Bandwidth efficiency optimization technologies:
- Automated Equalink® predistortion, providing up to 10% bandwidth gain
- Clean Channel TechnologyTM, improving efficiency by up to 15%
Future-proof solutions:
- easy upgrade from ASI to GbE, from IF-band to L-band
- DVB-S2 extensions and RF Carrier ID - capabilities are anticipated to become available
1. Newtec M6100 Broadcast Satellite
Modulator
Steven Soenens
Director, Product Marketing Broadcast
ssoe@newtec.eu
Broadband Systems
Professional Equipment
IP Software
29. Thank you
Steven Soenens – ssoe@newtec.eu
Broadband Systems
Professional Equipment
IP Software
Editor's Notes
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.