Is DVB-S2X a feature set on top of DVB-S2 or a complete new signal form?
DVB-S2X is an extension of the DVB-S2 specifi cation that formalizes existing features (e.g., smaller roll-offs) in addition to introducing completely new features (e.g., higher MODCODs). This enables operators to achieve substantial effi ciency gains exceeding the results offered by proprietary systems on the market today.
One of the key enhancements of DVBS2X is a fi ner granularity in MODCODs, allowing operators to achieve the highest resolution for optimal modulation in all circumstances. In addition, the DVB-S2X standard separates linear and nonlinear MODCODs, allowing operators to achieve better effi ciency levels.
DVB-S2X also offers higher modulation schemes. Modulations with 64, 128, and 256 constellation points will be introduced to serve links with Es/ N0 of 15 dB and above. This allows operators to support professional applications with improved link budgets, which will become important as they deploy bigger antennas.
Greater wideband support is another benefi t offered by DVB-S2X. The wideband implementation in DVBS2X typically addresses satellite transponders with bandwidths from 72 MHz (e.g., C-band) up to several hundred MHz (e.g., Ka-band, HTS).
The conclusion is that this is a complete new satellite transmission standard.
Where did the motivation to work on a successor to DVB-S2 come from?
Technology is constantly evolving, so it was only natural that the advanced features of DVB-S2 were driven to their edge. With that being said, DVB procedures require a strong commercial objective for the defi nition of a new standard. Although the motivation of working on a successor to DVB-S2 came from the professional market, the direct-tohome representatives are infl uencing the direction of the new standard since the commercial market is much bigger. On the other hand, DVB-S2 became successful because of the overlap between commercial and professional applications, encouraging everyone to rely on a common standard in order to provide a solution that was both powerful and cost-effective.
The industry benefi ts from following a common standard as opposed to individual proprietary systems. WORK Microwave completely supports the DVB standardization process, and believes it’s in the best interest of the market to develop nonproprietary solutions. We will continue to follow the latest market demands and aggressively invest in R&D so that we can meet our customers’ most pressing needs.
WORK Microwave has been involved in the standardization process as a member of the DVB Project and is an active contributor to the development of this new standard.