Newtec Breaks Through the 500 Mbps Barrier
Pascale Paoli-Lebailly ©RapidTVNews | 19-06-2012
Satellite industry company Newtec is claiming to have ushered in a new era of bandwidth efficiency as the new DVB-S2 standard improvements break speed records on a 72 MHz Ku-band transponder operated by Eutelsat.
Testing was performed at Eutelsat’s teleport in Rambouillet during the night in order not to disturb daytime sport transmissions. A significant margin was taken in cloud cover conditions to ensure the tests were relevant for real-life high availability services in broadcast and telecom markets.
The tests were carried out in several steps to validate different market application scenarios.
A number of innovative elements were used to improve current efficiencies, including Clean Channel Technology, a Newtec technology for implementing lowest roll-off and filtering to boost throughput. New modulation and Forward Error Correction (FEC) codes were also used, which can be seen as demonstrators for evolutions in extending the DVB-S2 standard. In particular for this part of the test, a complete reworked 32 APSK 135/180 (135 over 180) modulation proved to be most optimised.
In another test, 352 Mbps was achieved in a one-way distribution set-up over the 72 MHz transponder using 64 APSK modulations and related codes, with significant margin on the Ku-band system.