Adaptive Coding and Modulation (ACM) is a feature incorporated into the DVB-S2 satellite specification, allowing real-time\r\nadaptation of transmission parameters according to the link conditions. Although ACM was originally designed for optimizing\r\nunicast services, this article discusses the expansion of its usage to broadcasting streams as well. For this purpose, a general crosslayer\r\nadaptation approach is proposed, along with its realization into a fully functional experimental network, and test results are\r\npresented. Finally, two case studies are analysed, assessing the gain derived by ACMin a real large-scale deployment, involving HD\r\nservices provision to two different geographical areas.
Loading....